A raw material welding device for processing a marine flow joint

Abstract

The present application relates to the field of ship welding, in particular to a raw material welding device for ship flow joint processing, comprising a hydraulic control module and a supporting cylinder body, a welding execution head is connected to the middle of the lower surface of the supporting cylinder body, a narrow cavity Venturi tube effect and an annular high-speed protective gas curtain design are used, inert protective gas covers the molten pool area with high-speed uniform airflow, isolates external air, effectively avoids oxidation inclusion pores and incomplete fusion defects generated during stainless steel and duplex steel welding, the reverse V-shaped structure of the inner cone angle edge and the middle shaft section of the welding head cooperates with the airflow buffer of the inert gas cavity to avoid the disorder of the protective gas curtain, block the reverse intrusion of external air through the smoke channel into the molten pool, further strengthen the protection effect, eliminate the protection blind area, realize self-adaptive regulation and control in the gas flow, adjust the narrow cavity cross-sectional area through the expansion force of mixed gas, dynamically match the protective gas flow rate with the welding load and the amount of waste gas generated, both ensure the protection intensity of the molten pool and avoid excessive consumption of the protective gas.

Description

Technical Field

[0001] This invention relates to the field of ship welding, and more specifically to a raw material welding device for processing marine flow connectors. Background Technology

[0002] Marine flow connectors are key components in ship piping systems for controlling fluid transport and regulating flow. They are typically formed by welding multiple sections of pipe, flanges, and connector bodies. The quality of their welding directly determines the sealing, pressure resistance, and service safety of the piping system. Traditional and existing welding equipment generally suffers from core problems when adapting to the processing of marine flow connectors, such as insufficient positioning accuracy, poor welding stability, weak adaptability, and difficulty in balancing efficiency and quality.

[0003] A Chinese invention patent, CN117900744A, discloses a ship welding device. It includes a welding machine, welding clamp, and welding rod, as well as a tracking and prediction device. The tracking and prediction device includes a sleeve, an eccentric rotating support, three resistance rods, a controller, and a display screen. The end of the welding rod's core is inserted inside the sleeve. The welding clamp is electrically connected to the welding core by clamping the sleeve. The resistance rods are arranged parallel to the welding rod at equal intervals, with the distance between adjacent resistance rods equal to the radius of the welding rod. The eccentric rotating support is mounted on the sleeve, and three carbon brush tubes are fixedly connected to the eccentric rotating support. Each resistance rod is inserted into a carbon brush tube. The upper end of each resistance rod and each carbon brush tube are connected to the controller via wires. The lower end of each resistance rod is inserted into the bevel to be welded and abuts against the inner wall of the bevel. The controller determines the relative position of the welding rod end and the welding path based on the three detected resistance values ​​and transmits the determination result to the display screen.

[0004] However, the device does not involve an integrated structure for efficient gas protection and welding fume purification. In welding scenarios involving easily oxidized materials such as stainless steel and duplex steel, the molten pool is easily exposed to the air environment, reacting with reactive gases such as oxygen and nitrogen to form oxidation inclusions and nitriding defects, reducing the corrosion resistance and mechanical properties of the weld. This makes it difficult to meet the long-term service reliability requirements of ship high-pressure pipeline systems. At the same time, the direction of shielding gas flow is inconsistent with the direction of fume collection, allowing fumes to easily escape into the working environment, resulting in insufficient capture efficiency and failing to meet the occupational health and environmental protection standards for shipbuilding. Summary of the Invention

[0005] This invention addresses the technical problems existing in the prior art by providing a raw material welding device for processing marine flow connectors.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A welding device for raw materials for processing marine flow connectors includes a hydraulic control module and a support cylinder. A welding execution head is connected to the middle of the lower surface of the support cylinder. A shaft diameter sleeve is provided at the top of the outer arc surface of the welding execution head. A flow connector seat is sleeved on the lower surface of the shaft diameter sleeve. A flexible outward flange is provided at the top of the outer arc surface of the flow connector seat. A welding head central axis section is provided at the middle of the inner arc surface of the flexible outward flange. A flexible edge pressing end is provided near the welding head central axis section on the inner arc surface of the flexible outward flange. An outwardly expanding spherical section is provided at the top of the welding head central axis section. An inwardly concave section is provided at the middle of the outwardly expanding spherical section and the welding head central axis section. The inwardly concave section is located at the bottom of the outwardly expanding spherical section. An open end is provided at the top of the welding head central axis section. An arc-shaped round head A is provided at the bottom of the flexible edge pressing end. An inert gas hole is provided between the flexible outward flange and the flexible edge pressing end.

[0007] In a preferred embodiment, the outer arc surface of the central axis section of the welding head is provided with an extended flange in the middle, the inner arc surface of the extended flange is provided with an air cavity, the top of the extended flange is provided with an arc-shaped round head B, and the arc-shaped round head A at the bottom of the flexible edge pressing end is attached to the arc-shaped round head B at the top of the extended flange.

[0008] In a preferred embodiment, a through hole is provided on the central axis section of the welding head near the outer flange, and the air cavity inside the outer flange is adapted to the through hole, and the air cavity inside the outer flange extends into the inner arc surface of the central axis section of the welding head.

[0009] In a preferred embodiment, one end of the welding execution head extends into the interior of the central shaft section of the welding head, the welding execution head has an inner curved end near the bottom of the central shaft section of the welding head, and the bottom of the flexible outward flange has an inner conical angle edge.

[0010] In a preferred embodiment, one end of the welding execution head extends into the interior of the central shaft section of the welding head, the welding execution head has an inner curved end near the bottom of the central shaft section of the welding head, and the bottom of the flexible outward flange has an inner conical angle edge.

[0011] In a preferred embodiment, one end of the welding execution head extends into the interior of the central shaft section of the welding head, the welding execution head has an inner curved end near the bottom of the central shaft section of the welding head, and the bottom of the flexible outward flange has an inner conical angle edge.

[0012] In a preferred embodiment, the surface of the shaft disk is provided with a number of spiral grooves, which are evenly distributed on the shaft disk in a ring array. The turbine is placed in the middle of the outwardly expanding spherical section and is located at the top of the inwardly concave section.

[0013] In a preferred embodiment, the top surface of the flexible outward flange is fitted into the inner arc surface of the shaft diameter sleeve, a spring is fixedly installed on the inner top wall of the shaft diameter sleeve, the end of the spring away from the shaft diameter sleeve abuts against the flexible outward flange, and series holes are provided on both sides of the upper surface of the shaft diameter sleeve.

[0014] In a preferred embodiment, the inner arc surface of the series hole is connected to a waste gas recovery pipe, and the waste gas recovery pipes on both sides are arranged in the top opening end of the central section of the welding head. One end of the waste gas recovery pipe extends into the hydraulic control module, and the central section of the welding head and the flexible outward flange are in two layers, inner and outer.

[0015] The beneficial effects of this invention are: 1. Utilizing the narrow-cavity Venturi tube effect and the design of a ring-shaped high-speed protective gas curtain, the inert protective gas covers the molten pool area with a high-speed, uniform airflow, isolating it from the outside air. This effectively avoids oxidation inclusions, porosity, and incomplete fusion defects during the welding of stainless steel and duplex steel. The inverted V-shaped structure of the inner cone corner and the central axis of the welding head, combined with the airflow buffer of the inert gas cavity, prevents the protective gas curtain from becoming disordered. At the same time, it blocks the backflow of outside air into the molten pool through the fume channel, further enhancing the protective effect and eliminating blind spots. The gas flow rate is adaptively controlled, and the cross-sectional area of ​​the narrow cavity is adjusted by the expansion force of the mixed gas, so that the flow rate of the protective gas and the amount of waste gas generated are dynamically matched between the welding load. This ensures the strength of the molten pool protection while avoiding excessive consumption of the protective gas, achieving a dual balance between protective effect and energy saving.

[0016] 2. Through a dual fume collection mechanism of inert gas impact and cyclone enhancement, a high-speed inert gas curtain forcibly entrains welding exhaust gas, and an inverted V-shaped structure guides the exhaust gas in a directional manner. The high-speed cyclone formed by the turbine deeply adsorbs and disperses the welding fume, solving the problem of welding fume diffusion, improving the working environment, avoiding the harm of fume to the health of operators, and realizing the closed-loop recycling of protective gas. The mixed gas carrying the fume is transported to the purification unit through the exhaust gas recovery pipe and reused as auxiliary protective gas, effectively reducing the consumption of inert gas and lowering welding production costs. The fume collection and gas protection work together, and an inert gas isolation layer is formed in the fume collection channel, which does not interfere with the protection of the molten pool and avoids the contamination of the weld surface by residual fume, thereby improving processing efficiency.

[0017] 3. The adaptive bonding mechanism, consisting of springs, flexible outer flanges, and flexible edge pressing ends, can adjust the preload and bonding state according to the pipe diameter and wall thickness of the marine flow connector material. The inner cone edge is tightly bonded to the workpiece surface. The elastic deformation design of the flexible outer flange and the extended flange can absorb welding thermal stress, prevent the workpiece from shifting and deforming due to thermal expansion, and ensure the coaxiality of the joint during welding. It can meet the processing requirements of various flow connectors in marine pipeline systems and has strong versatility. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the flow connector seat of the present invention; Figure 3 This is a top view of a partial cross-sectional structure of the flexible outward flange of the present invention; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 5 This is an anatomical diagram of the turbine of the present invention; Figure 6 This is an overall plan view of the flow connector seat of the present invention.

[0019] Attached diagram descriptions: 1. Hydraulic control module; 2. Support cylinder; 3. Welded actuator head; 4. Shaft diameter sleeve; 41. Series hole; 5. Flow connector seat; 51. Flexible outward flange; 511. Inner cone angle edge; 52. Central section of the welding head; 521. Outwardly expanding spherical section; 522. Inwardly concave section; 523. Inwardly bent end; 524. Open end; 53. Soft edge pressing end; 531. Arc-shaped round head A; 54. Inertia vent; 55. Outer flange; 551. Air cavity; 552. Arc-shaped round head B; 56. Inert gas chamber; 57. Narrow cavity; 6. Turbine; 61. Airflow hole; 62. Shaft disc; 63. Swirl groove hole; 7. Spring; 8. Exhaust gas recovery pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0023] This embodiment provides a welding device for raw materials used in the processing of marine flow connectors, including a hydraulic control module 1 and a support cylinder 2. A welding execution head 3 is connected to the middle of the lower surface of the support cylinder 2. A shaft diameter sleeve 4 is provided at the top of the outer arc surface of the welding execution head 3. A flow connector seat 5 is sleeved on the lower surface of the shaft diameter sleeve 4. A flexible outer flange 51 is provided at the top of the outer arc surface of the flow connector seat 5. A welding head central shaft section 52 is provided in the middle of the inner arc surface of the flexible outer flange 51. A flexible edge pressure end 53 is provided near the central axis section 52 of the welding head on the arc surface. An outwardly expanding spherical section 521 is provided at the top of the central axis section 52 of the welding head. An inwardly concave section 522 is provided between the outwardly expanding spherical section 521 and the middle of the central axis section 52 of the welding head. The inwardly concave section 522 is located at the bottom of the outwardly expanding spherical section 521. An open end 524 is provided at the top of the central axis section 52 of the welding head. An arc-shaped round head A531 is provided at the bottom of the flexible edge pressure end 53. An inert gas hole 54 is provided between the flexible outwardly turned edge 51 and the flexible edge pressure end 53.

[0024] Figure 1 , Figure 3 and Figure 5The inner conical edge 511 at the bottom of the flexible outer flange 51 fits against the welding surface of the marine flow connector material. The spring 7 fixedly installed on the inner top wall of the shaft sleeve 4 is always in a pre-compressed state, providing a continuous and uniform upward pre-tightening force for the flexible outer flange 51. This ensures that the top surface of the flexible outer flange 51 is tightly pressed against the lower end face of the shaft sleeve 4, eliminating the gap between the device and the workpiece and ensuring initial sealing. This provides gas protection and dust collection for subsequent applications. When the hydraulic control module 1 starts working and drives the support cylinder 2 to apply a stable welding pressure downward, the support cylinder 2 drives the welding actuator head 3 to move downward synchronously, thereby pushing the flow connector sleeved on the outer arc surface of the welding actuator head 3. As the connector seat 5 moves downward, the flexible outer flange 51 sinks along with the flow connector seat 5. At this time, the flexible edge pressure end 53, which is integrally formed on the inner wall of the flexible outer flange 51, moves downward synchronously. The arc-shaped round head A531 at the bottom of the flexible edge pressure end 53 precisely fits with the arc-shaped round head B552 at the top of the outer arc surface of the outer flange 55 on the central axis section 52 of the welding head. As the downward force is continuously applied, the arc-shaped round head A531 generates a uniform squeezing force on the outer flange 55, forcing the outer flange 55 to undergo elastic deformation, which in turn causes the narrow cavity 57 between the outer flange 55 and the inner wall of the flexible outer flange 51 to contract synchronously. The flow cross-sectional area of ​​the narrow cavity 57 decreases accordingly, thus completing the gas path acceleration.

[0025] At this time, the inert protective gas, pure argon, is stably introduced into the inert gas cavity 56 through the inert gas hole 54 reserved between the flexible outer flange 51 and the flexible edge pressure end 53. The inert gas in the inert gas cavity 56 is rapidly filled and flows towards the narrow cavity 57. Since the narrow cavity 57 is already in a contracted state, based on the Venturi tube effect, the inert gas is restricted when flowing through the narrow cavity 57, and the flow velocity is greatly increased, forming a high-speed uniform airflow. The high-speed airflow is rapidly ejected along the conical surface of the inner cone corner edge 511. Because the inner cone corner edge 511 is annularly wrapped around the outside of the workpiece welding area, the gas... After the jet is ejected, it forms a ring-shaped, sealed protective air curtain that closely adheres to the surface of the workpiece and covers the molten pool area formed by the welding head 3. This isolates the molten pool from contact with active gases such as oxygen and nitrogen in the outside air, effectively preventing defects such as oxidation inclusions and porosity during welding of easily oxidized materials such as stainless steel and duplex steel. This ensures the corrosion resistance and mechanical properties of the weld. The air curtain not only isolates the outside air but also has strong airflow power. Its flow direction is consistent with the conical surface of the inner cone corner 511, exhibiting a trajectory from the outside to the inside and from the bottom to the top.

[0026] Figure 2 , Figure 4 and Figure 6The welding head central section 52 has an extended flange 55 in the middle of the outer arc surface. The inner arc surface of the extended flange 55 has an air cavity 551. The top of the extended flange 55 has an arc-shaped round head B552. The arc-shaped round head A531 at the bottom of the flexible edge pressing end 53 fits onto the arc-shaped round head B552 at the top of the extended flange 55. The welding head central section 52 has a through hole near the extended flange 55. The air cavity 551 inside the extended flange 55 matches the through hole. The air cavity 551 inside the extended flange 55 extends into the inner arc surface of the welding head central section 52. One end of the welding execution head 3 penetrates into the interior of the welding head central section 52. The welding execution head 3 has an inner bent end 523 near the bottom of the welding head central section 52. The bottom of the flexible outer flange 51 has an inner cone angle edge 511.

[0027] Because the inner cone corner 511 and the bottom of the welding head central axis section 52 form an inverted V-shaped structure, this structure creates a natural airflow guiding channel. The exhaust gas, containing fumes and residual shielding gas, generated by the welding execution head 3 will diffuse in all directions. However, the inner wall of the V-shaped structure will physically block the diffused exhaust gas. At the same time, the high-speed flowing inert shielding gas will create a negative pressure area inside the V-shaped structure. The external shielding gas curtain continuously presses into the V-shaped structure, making the air pressure inside the V-shaped structure slightly lower than the outside, thereby generating an inward adsorption force that prevents the exhaust gas from diffusing outward. The gas can only flow upwards along the inner wall of the V-shape. After the welding execution head 3 begins welding, a large amount of welding waste gas will be generated. The waste gas contains welding fumes, residual inert shielding gas, and a small amount of welding reaction products. Under the entrainment of the high-speed flowing inert shielding gas, these waste gases are passively drawn into the internal cavity of the central section 52 of the welding head along the inner wall of the inverted V-shaped structure. The high-speed flowing inert shielding gas forms a continuous airflow channel within the V-shaped structure. After the waste gas particles and residual gas enter this channel, they are forcibly entrained by the airflow and flow upwards along with the inert shielding gas. As the welding head moves upward, the gas flows uniformly upward along the inner wall of the central axis section 52. A portion of the mixed gas enters the air cavity 551 inside the outer flange 55 through the through hole in the middle of the outer arc surface of the central axis section 52. The mixed gas expands rapidly in the air cavity 551, generating an outward expansion force, which pushes the outer flange 55 to expand further outward elastically. This causes the angle between the outer flange 55 and the flexible outer flange 51 inert gas cavity 56 to gradually decrease. This change in angle will synchronously adjust the gas flow cross-sectional area of ​​the narrow cavity 57, realizing the gas path. The adaptive control of flux means that when the welding load increases and the amount of waste gas generated increases, the pressure of the mixed gas increases, the expansion of the gas cavity 551 increases accordingly, the flow cross-sectional area of ​​the narrow cavity 57 decreases further, the inert gas flow rate increases, and the strength of the protective gas curtain increases simultaneously to ensure the protective effect of the molten pool. When the welding load decreases and the amount of waste gas generated decreases, the pressure of the mixed gas decreases, the gas cavity 551 contracts, the flow cross-sectional area of ​​the narrow cavity 57 increases, and the inert gas flow rate slows down to avoid excessive consumption of protective gas and achieve supply and energy-saving control of protective gas.

[0028] Figure 5 The surface of the shaft disk 62 is provided with a number of spiral groove holes 63, which are evenly distributed on the shaft disk 62 in a ring array. The turbine 6 is placed in the middle of the outwardly expanding spherical section 521 and set at the top of the concave section 522. The top surface of the flexible outer flange 51 is sleeved into the inner arc surface of the shaft diameter sleeve 4. A spring 7 is fixedly installed on the inner top wall of the shaft diameter sleeve 4. The end of the spring 7 away from the shaft diameter sleeve 4 abuts against the flexible outer flange 51. Both sides of the upper surface of the shaft diameter sleeve 4 are provided with series holes 41. The inner arc surface of the series holes 41 is connected to the exhaust gas recovery pipe 8. The exhaust gas recovery pipes 8 on both sides are set in the top opening end 524 of the welding head shaft section 52. One end of the exhaust gas recovery pipe 8 extends into the hydraulic control module 1. The welding head shaft section 52 and the flexible outer flange 51 are in two layers, inner and outer.

[0029] The mixed gas that has not entered the air cavity 551 continues to flow upward along the inner wall of the central shaft section 52 of the welding head. When it flows through the concave section 522 at the top of the central shaft section 52, the arc-shaped contraction structure of the concave section 522 forms a secondary acceleration and guiding effect on the mixed gas, further increasing the flow velocity of the mixed gas. This causes the mixed gas to rush into the middle of the outwardly expanding spherical section 521 in the form of a high-speed airflow. The airflow holes 61 on the bottom surface of the turbine 6 at the top of the concave section 522 are evenly distributed in a ring array on the lower surface edge of the turbine 6. After the mixed gas enters the interior of the turbine 6 through the airflow holes 61, it spirals upward along the swirling groove holes 63 opened on the upper surface shaft disk 62 of the turbine 6. Guided by the orifice 63, the mixed gas forms a high-speed rotating cyclone. This cyclone has a dual function. On the one hand, the negative pressure adsorption effect generated by the high-speed rotation can efficiently collect all the residual gas and welding fumes inside the central shaft section 52 of the welding head, avoiding fumes residue. On the other hand, the high-speed rotating cyclone flows directly through the outer arc surface of the welding actuator head 3. Through the forced convection of the gas flow, it quickly removes a large amount of heat generated during the welding process of the welding actuator head 3, effectively reducing the working temperature of the welding actuator head 3, avoiding component aging and seal damage caused by long-term high temperature, and preventing welding parameter drift caused by high temperature, thus ensuring the stability and consistency of the welding process.

[0030] The mixed gas cyclone carrying welding fumes continues to flow upwards, entering the exhaust gas recovery pipes 8 on both sides through the open end 524 at the top of the welding head shaft section 52. The exhaust gas recovery pipes 8 pass through the series holes 41 on both sides of the upper surface of the shaft sleeve 4, and one end extends to the purification unit inside the hydraulic control module 1. The mixed gas cyclone is stably transported to the purification unit through the exhaust gas recovery pipes 8. The purification unit performs efficient filtration of the mixed gas to remove welding fume particles. After drying and purity testing, the purified clean inert gas can flow back to the inert gas hole 54 and re-participate in the supply of the outer auxiliary shielding gas, realizing efficient closed-loop management of the inert shielding gas, greatly reducing shielding gas consumption, and reducing welding fume emissions, thus taking into account both welding quality and green environmental protection requirements.

[0031] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0032] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0033] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A welding apparatus for raw materials used in the processing of marine flow connectors, comprising: The hydraulic control module (1) and the support cylinder (2) are characterized in that a welding actuator (3) is connected to the middle of the lower surface of the support cylinder (2), and a shaft diameter sleeve (4) is provided on the top of the outer arc surface of the welding actuator (3), and a flow connector seat (5) is sleeved on the lower surface of the shaft diameter sleeve (4). The flow connector seat (5) has a flexible outer flange (51) on the top of its outer arc surface. The flexible outer flange (51) has a welding head central axis section (52) in the middle of its inner arc surface. The flexible outer flange (51) has a flexible edge pressing end (53) near the welding head central axis section (52) on its inner arc surface. The welding head central axis section (52) has an outwardly expanding spherical section (521) at its top. The outwardly expanding spherical section (521) and the welding head central axis section (52) have an inwardly concave section (522) at their middle ends. The inwardly concave section (522) is located at the bottom of the outwardly expanding spherical section (521). The top of the central shaft section (52) of the welding head is provided with an open end (524), the bottom of the flexible edge pressing end (53) is provided with an arc-shaped round head A (531), and an inert gas hole (54) is provided between the flexible outer flange (51) and the flexible edge pressing end (53).

2. The raw material welding device for processing marine flow connectors according to claim 1, characterized in that, The middle part of the outer arc surface of the central section (52) of the welding head is provided with an extended flange (55), the inner arc surface of the extended flange (55) is provided with an air cavity (551), the top of the extended flange (55) is provided with an arc-shaped round head B (552), and the bottom of the flexible edge pressing end (53) is attached to the arc-shaped round head B (552) at the top of the extended flange (55).

3. The raw material welding device for processing marine flow connectors according to claim 2, characterized in that, The central section (52) of the welding head has a through hole near the outer flange (55). The air cavity (551) inside the outer flange (55) is adapted to the through hole. The air cavity (551) inside the outer flange (55) extends into the inner arc surface of the central section (52) of the welding head.

4. The raw material welding device for processing marine flow connectors according to claim 1, characterized in that, One end of the welding execution head (3) extends into the interior of the welding head central shaft section (52). The welding execution head (3) has an inner curved end (523) near the bottom of the welding head central shaft section (52), and the bottom of the flexible outer flange (51) has an inner cone angle edge (511).

5. The raw material welding device for processing marine flow connectors according to claim 4, characterized in that, The inner arc surface of the inner cone corner edge (511) faces the bottom of the central axis section (52) of the welding head. The central axis section (52) of the welding head is sleeved in the inner arc surface of the flexible outer flange (51). An inert gas cavity (56) is provided between the inner cone corner edge (511) and the outer flange (55). A narrow cavity (57) is provided between the inner cone corner edge (511) and the outer flange (55). The inner cone corner edge (511) is adapted to the bottom end of the central axis section (52) of the welding head.

6. The raw material welding device for processing marine flow connectors according to claim 1, characterized in that, The welding execution head (3) has a turbine (6) in the outer arc surface near the outwardly expanding spherical section (521). The turbine (6) has an airflow hole (61) at the lower edge of its lower surface and a shaft disk (62) on its upper surface.

7. The raw material welding device for processing marine flow connectors according to claim 6, characterized in that, The surface of the shaft disk (62) is provided with a spiral groove hole (63). The number of spiral groove holes (63) is several, and they are evenly distributed on the shaft disk (62) in a ring array. The turbine (6) is placed in the middle of the outwardly expanding spherical section (521) and is set at the top of the concave section (522).

8. The raw material welding device for processing marine flow connectors according to claim 1, characterized in that, The top of the upper surface of the flexible outer flange (51) is fitted into the inner arc surface of the shaft diameter sleeve (4). A spring (7) is fixedly installed on the inner top wall of the shaft diameter sleeve (4). The end of the spring (7) away from the shaft diameter sleeve (4) abuts against the flexible outer flange (51). Series holes (41) are opened on both sides of the upper surface of the shaft diameter sleeve (4).

9. The raw material welding device for processing marine flow connectors according to claim 8, characterized in that, The inner arc surface of the series hole (41) is connected to the exhaust gas recovery pipe (8). The exhaust gas recovery pipes (8) on both sides are set in the top opening end (524) of the welding head central axis section (52). One end of the exhaust gas recovery pipe (8) extends into the hydraulic control module (1). The welding head central axis section (52) and the flexible outer flange (51) are in two layers, inner and outer.

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