Argon filling cabin for welding large titanium alloy complex structural part

Abstract

The utility model discloses an argon-filled cabin for welding a large titanium alloy complex structural member, which comprises a main cabin, an argon-filled cabin door, an argon-filled cabin door, an argon-filled cabin door, an argon-filled cabin door and an argon-filled cabin door, the first vacuum argon filling device is connected with the main cabin; the auxiliary cabin is arranged on the other side of the main cabin, the auxiliary cabin is connected with the main cabin through a sealing door, an auxiliary cabin door is arranged on the auxiliary cabin, a peeping window and a glove opening are arranged on the auxiliary cabin, sealing gloves are arranged on the glove opening, a tray is arranged in the auxiliary cabin within an arm reachable range, and the tray is used for placing parts, tools or consumables; the second vacuum argon filling device is connected with the auxiliary cabin; the argon filling cabin is provided with a main cabin and an auxiliary cabin which can independently form an argon protection state, and after the main cabin and the auxiliary cabin form the same argon protection state, parts, tools or consumables can be supplemented into the main cabin by opening a sealing door and utilizing sealing gloves.

Description

Technical Field

[0001] The utility model belongs to the technical field of argon filling chambers, and more specifically relates to an argon filling chamber used for welding large titanium alloy complex structural parts. Background Art

[0002] Titanium alloys are extensively used in aerospace and military applications for welding. Due to the extremely high weld quality requirements, welding is typically performed in an inert gas chamber. Existing chambers are small, with airtight gloves inserted into the sides for manual welding. For large, complex titanium alloy structures, glove-type chambers are insufficient for weld accessibility. Furthermore, the welding cycle for large parts is extremely long, and welding consumables, tools, and additional parts all need to be placed in an argon-filled chamber. Existing argon-filled chambers are unable to meet these requirements. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies in the prior art and provide an argon-filled chamber for welding large titanium alloy complex structural parts. The argon-filled chamber has a main chamber and an auxiliary chamber that can independently form an argon protection state. After the main chamber and the auxiliary chamber form the same argon protection state, parts, tools or consumables can be replenished into the main chamber by opening the sealed door and using sealed gloves.

[0004] In order to achieve the above-mentioned object, the utility model provides an argon-filled chamber for welding large titanium alloy complex structural parts, the argon-filled chamber comprising:

[0005] A main cabin, wherein a main cabin door is provided on one side of the main cabin;

[0006] a first vacuum argon filling device connected to the main cabin;

[0007] The auxiliary cabin is provided on the other side of the main cabin, the auxiliary cabin is connected to the main cabin through a sealed door, the auxiliary cabin is provided with an auxiliary cabin door, the auxiliary cabin is provided with a peek window and a glove port, the glove port is provided with a sealed glove, and a tray is provided within the reach of the arm in the auxiliary cabin, the tray is used to place parts, tools or consumables;

[0008] The second vacuum argon filling device is connected to the auxiliary cabin.

[0009] Optionally, the main cabin is a multi-section structure, and multiple sections of cabin bodies are welded to form the main cabin.

[0010] Optionally, the material of the main cabin is a stainless steel-carbon steel composite plate, and the stainless steel-carbon steel composite plate includes a stainless steel layer on the inner side of the main cabin and a carbon steel layer on the outer side of the main cabin.

[0011] Optionally, a sealing surface is provided between one side of the main cabin door and the bulkhead of the main cabin, and a hydraulic locking mechanism is provided on the other side of the main cabin door, and the hydraulic locking mechanism can press the main cabin door against the sealing surface.

[0012] Optionally, the first vacuum argon filling device includes:

[0013] A vacuum pumping device connected to the main cabin;

[0014] an argon filling device connected to the main cabin via an argon filling pipeline;

[0015] a pressure detection unit, disposed in the main cabin;

[0016] A control unit is connected to the vacuum pumping device, the argon filling device and the pressure detection unit.

[0017] Optionally, the argon filling pipeline includes a first pipeline and a second pipeline, the diameter of the first pipeline is larger than the diameter of the second pipeline, the first pipeline and the second pipeline are respectively provided with a first control valve and a second control valve, a pressure relief valve is provided on the top of the main cabin, the first control valve and the second control valve are connected to the control unit, and the control unit can first open the argon filling device and the first control valve when the first detection result of the pressure detection unit is within a first set pressure threshold range, and then close the first control valve and open the second control valve when the second detection result of the pressure detection unit is within a second set pressure threshold range.

[0018] Optionally, a temperature detection unit and a temperature control device are provided in the main cabin.

[0019] Optionally, a gas circulation device is provided in the main cabin.

[0020] Optionally, a ventilation structure is further included, wherein the ventilation structure includes:

[0021] an air supply device, disposed inside the main cabin on a side away from the main cabin door, the air supply device being in communication with the interior of the main cabin via an air supply pipe, the air supply pipe being provided with a vacuum valve;

[0022] A main door opening amount detection structure, wherein the main door position detection structure is capable of detecting the opening amount of the main door;

[0023] When the opening amount of the main door is within the set opening amount threshold range, the vacuum valve and the air supply device are opened in sequence.

[0024] Optionally, the auxiliary cabin is provided with a vacuum extraction interface, an argon filling interface, a pressure sensor and an oxygen content detection device.

[0025] The utility model provides an argon-filled chamber for welding large titanium alloy complex structural parts, which has the following beneficial effects:

[0026] 1. The argon-filled chamber has a main chamber and an auxiliary chamber that can independently form an argon protection state. After the main chamber and the auxiliary chamber form the same argon protection state, parts, tools or consumables can be added to the main chamber by opening the sealed door and using sealed gloves. It is suitable for welding large titanium alloy complex structures;

[0027] 2. The main door of the argon filling cabin is provided with sealing surfaces and hydraulic locking mechanisms on both sides, which can ensure the sealing of the main door under normal pressure, negative pressure and positive pressure in the main cabin;

[0028] 3. The first vacuum argon filling device of the argon filling cabin has a first pipeline and a second pipeline with a large diameter and a small diameter. The large-diameter first pipeline can realize rapid argon filling, and the small-diameter second pipeline can slowly fill argon after rapid argon filling to maintain the air pressure in the main cabin stable, and exhaust gas is discharged through the pressure relief valve;

[0029] 4. The argon-filled cabin also has a ventilation structure, which can timely ventilate the main cabin when an accident occurs, ensuring the safety of personnel and equipment.

[0030] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0032] Figure 1 The figure shows a schematic structural diagram of an argon-filled chamber for welding large titanium alloy complex structural parts according to an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Main cabin; 2. Main cabin door; 3. Auxiliary cabin; 4. Sealed door; 5. Auxiliary cabin door; 6. Peep window; 7. Glove port; 8. Tray; 9. Pressure relief valve. DETAILED DESCRIPTION

[0035] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0036] The utility model provides an argon-filled chamber for welding large titanium alloy complex structural parts, the argon-filled chamber comprising:

[0037] The main cabin has a main cabin door on one side;

[0038] a first vacuum argon filling device connected to the main cabin;

[0039] The auxiliary cabin is located on the other side of the main cabin and is connected to the main cabin through a sealed door. The auxiliary cabin is provided with an auxiliary cabin door, a peek window and a glove port, and sealed gloves are provided on the glove port. A tray is provided within the reach of the arm in the auxiliary cabin, and the tray is used to place parts, tools or consumables;

[0040] The second vacuum argon filling device is connected to the auxiliary cabin.

[0041] Specifically, the first vacuum argon filling device and the second vacuum argon filling device can independently evacuate and fill the main cabin and the auxiliary cabin with argon, ensuring that the main cabin and the auxiliary cabin are both in an argon retention state that meets the welding regulation. After the same argon protection state is formed in the main cabin and the auxiliary cabin, manual welding and robotic welding can be performed in the main cabin; when parts, tools or consumables need to be replenished in the main cabin, the sealed door is opened, and the parts, tools or consumables placed on the pallet can be conveniently transported to the main cabin through the peek window and sealed gloves on the auxiliary cabin, which is suitable for welding large titanium alloy complex structures.

[0042] Optionally, the main cabin is a multi-section structure, and multiple sections of cabin bodies are welded to form the main cabin.

[0043] Specifically, from a manufacturing perspective, large argon-filled cabins are very large, which poses a great challenge to processing, manufacturing, hoisting and transportation. In order to reduce costs, the main cabin structure is segmented, and the number of cabin segments is determined by comprehensively considering processing, manufacturing, hoisting and transportation conditions.

[0044] Optionally, the material of the main cabin is a stainless steel-carbon steel composite plate, which includes a stainless steel layer on the inner side of the main cabin and a carbon steel layer on the outer side of the main cabin.

[0045] Specifically, argon filling chambers are usually made of stainless steel, which is polished to reduce the adsorption rate of surface gas molecules. However, large argon filling chambers consume a lot of materials. Considering the functional requirements and cost-effectiveness, stainless steel-carbon steel composite plates are selected and used. Stainless steel is used as the inner wall of the argon filling chamber, and carbon steel is used as the base material to provide mechanical properties.

[0046] Optionally, a sealing surface is provided between one side of the main cabin door and the bulkhead of the main cabin, and a hydraulic locking mechanism is provided on the other side of the main cabin door, which can press the main cabin door against the sealing surface.

[0047] Specifically, there is no restriction on the specific structural form of the hydraulic locking mechanism. The hydraulic locking mechanism can be a plurality of hydraulic cylinders driving pressure blocks distributed around the main cabin door, and the main cabin door is pressed against the sealing surface by hydraulically driving the pressure blocks; its functions are: one is to close the main cabin door, and the other is to provide additional sealing force to ensure that the compression state of the sealing ring can be maintained when the main cabin is at normal pressure. At the same time, it can withstand a certain positive or negative pressure in the main cabin, that is, a slight overpressure of the argon gas in the main cabin will not cause leakage of the cabin door and cause damage to the protective atmosphere.

[0048] In one example, one side of the main cabin is open, and a lifting main cabin door is designed. The open hatch and the main cabin door can be sealed. The main cabin door adopts a double-column lifting method with a counterweight to reduce the driving load. The lifting drive adopts synchronous control, and the highest and lowest positions have limit switches. When the main cabin door is raised to the highest position, there is a pneumatic latch mechanism as a safety anti-falling measure. During the lifting process, it is also equipped with a ratchet anti-falling device. Once the chain breaks, the ratchet pops out instantly and jams the ratchet bar on the column to prevent falling. The main cabin door is connected to the lifting mechanism by a hanging chain. When the main cabin door descends to the pre-sealing position, a gap is left with the sealing surface. A hydraulic locking mechanism is set around the main cabin door to seal the main cabin door and the sealing surface. During the closing process, the main cabin door moves horizontally. The hanging chain connection can ensure that the locking force will not be transmitted to the column, thereby ensuring the safety of the equipment.

[0049] In another example, the main cabin door can also be opened and closed in a translational manner. During the opening and closing process, a gap is left between the main cabin door and the sealing surface. The main cabin door is hoisted and driven by a trolley. The trolley is driven by a variable frequency motor or a servo motor, and the roller is driven to rotate through a reducer. The roller runs on a track. The track is located on the top of the gantry frame. A rolling stop wheel is installed at the bottom of the main cabin door to cooperate with the stop bar below the main cabin door to prevent large swings. The drive is connected to the main cabin door with a transverse hinge to provide the main cabin door with a small translation capability. The main cabin door is moved toward the hatch by a cylinder drive, and a hydraulic locking mechanism is used to seal and tighten the main cabin door.

[0050] Optionally, the first vacuum argon filling device includes:

[0051] Vacuum equipment, connected to the main cabin;

[0052] Argon filling equipment, connected to the main cabin through an argon filling pipeline;

[0053] A pressure detection unit is provided in the main cabin;

[0054] The control unit is connected with the vacuum pumping equipment, the argon filling equipment and the pressure detection unit.

[0055] Specifically, the control unit starts the argon filling device to fill the main chamber with argon when the vacuum pumping device draws the vacuum degree to the target vacuum degree.

[0056] Optionally, the argon filling pipeline includes a first pipeline and a second pipeline, the diameter of the first pipeline is larger than the diameter of the second pipeline, the first pipeline and the second pipeline are respectively provided with a first control valve and a second control valve, a pressure relief valve is provided on the top of the main cabin, the first control valve and the second control valve are connected to the control unit, and the control unit can first open the argon filling equipment and the first control valve when the first detection result of the pressure detection unit is within the first set pressure threshold range, and then close the first control valve and open the second control valve when the second detection result of the pressure detection unit is within the second set pressure threshold range.

[0057] Specifically, fully automatic vacuuming and argon filling is adopted. The process is that after the main cabin is closed, the automatic program is started, the vacuum pump and valves are opened in sequence to perform vacuuming, the pressure detection unit monitors the cabin pressure in real time, and when the pressure reaches the working vacuum degree, the vacuuming is stopped, and the argon filling pipeline is opened to perform argon filling; the argon is filled in through two pipelines, a fast filling pipeline with a larger diameter, which is the first pipeline, and a slow filling pipeline with a smaller diameter and flow adjustment capability, which is the second pipeline. When the pressure in the main cabin is close to normal pressure, the fast filling is closed, and the slow filling is maintained until the cabin pressure reaches a stable, slightly positive pressure state and then closed; the core purpose of doing this is that due to the large volume of the cabin, when high-speed airflow enters the cabin After filling, the distribution of gas in the cabin is not uniform, that is, the air pressure in different areas is different. At the same time, the pressure measured in the cabin when the gas is flowing and in a stable state is different, which is reflected in the change of the pressure feedback value. After the feedback pressure reaches the standard, the argon filling is stopped, and the pressure in the cabin will gradually drop to a certain value. Therefore, slow filling is adopted in the final stage of argon filling. After reaching the target pressure, the pressure in the cabin is basically stable. This shortens the argon filling time and improves work efficiency. After the argon filling is completed, a micro-flow of argon gas must still be continuously added to maintain a micro-positive pressure in the cabin, so that the microscopic leakage direction is from the inside to the outside, and to cooperate with the pressure relief valve on the top of the main cabin to remove the exhaust gas in the cabin (the specific gravity is less than that of argon).

[0058] Optionally, a temperature detection unit and a temperature control device are provided in the main cabin.

[0059] Optionally, a gas circulation device is provided in the main cabin.

[0060] Specifically, the main cabin of the argon filling cabin is equipped with the monitoring and adjustment of multiple parameters: cabin pressure monitoring, which uses real-time detection of negative pressure and positive pressure and feeds back to the control system to accurately execute valve actions, prompt alarms, emergency stops and other actions; cabin temperature monitoring, which sets a comfortable temperature range based on actual working conditions, and automatically starts cooling or heating when the feedback temperature exceeds the range. At the same time, a gas circulation system is designed in the cabin to complete the heat exchange cycle of most gases in the shortest possible time; argon purity monitoring, which can be started in the automatic program or manually, and the argon purity value is fed back to the system online to accurately execute subsequent mechanism actions, alarms, etc.

[0061] Optionally, a ventilation structure is further included, and the ventilation structure includes:

[0062] An air supply device is provided inside the main cabin on a side away from the main cabin door. The air supply device is connected to the interior of the main cabin through an air supply pipe, and a vacuum valve is provided on the air supply pipe;

[0063] The main door opening amount detection structure and the main door position detection structure can detect the opening amount of the main door;

[0064] When the opening amount of the main cabin door is within the set opening amount threshold range, the vacuum valve and the air supply device are opened in sequence.

[0065] Specifically, because people are working inside the cabin, a reliable means of escape or rescue is required, defined as a rapid ventilation function. When the main cabin is protected by argon gas and a welder is working inside, if an emergency occurs, causing the welder's protection to fail, resulting in suffocation, minor injury, serious injury, or coma, other personnel inside the cabin or a supervisor outside the cabin immediately activates the rapid ventilation function. This function can be operated from both inside and outside the cabin. The hydraulic locking device immediately releases, and the main cabin door begins to open. Simultaneously, a high-volume air supply device at the innermost position of the cabin is activated. The structure comprises a large-diameter flange extending from the cabin body, a vacuum valve connected to the flange port, and a high-volume fan connected to the vacuum valve via a pipe. The vacuum valve opens first, followed by the fan. The fan cannot be activated until the main cabin door is opened to a certain extent to prevent the main cabin door from swinging and causing additional danger. The main cabin door opening detection mechanism can be a photoelectric sensor or camera installed on one side of the main cabin door. The rapid ventilation function is required to increase the oxygen content in the main cabin to above 18% (the critical value for suffocation symptoms is 12%) in the shortest possible time, allowing rescue personnel to immediately enter the cabin to provide assistance.

[0066] Optionally, the auxiliary cabin is provided with a vacuum extraction interface, an argon filling interface, a pressure sensor and an oxygen content detection device.

[0067] Example

[0068] like Figure 1 As shown, the utility model provides an argon-filled chamber for welding large titanium alloy complex structural parts, the argon-filled chamber comprising:

[0069] A main cabin 1, with a main cabin door 2 provided on one side of the main cabin 1;

[0070] A first vacuum argon filling device connected to the main cabin 1;

[0071] The auxiliary cabin 3 is provided on the other side of the main cabin 1 and is connected to the main cabin 1 through a sealed door 4. The auxiliary cabin 3 is provided with an auxiliary cabin door 5, a peek window 6 and a glove port 7, and a sealed glove is provided on the glove port 7. A tray 8 is provided within the auxiliary cabin 3 within arm's reach. The tray 8 is used to place parts, tools or consumables;

[0072] The second vacuum argon filling device is connected to the auxiliary cabin 3.

[0073] In this embodiment, the main cabin 1 is a multi-section structure, and the multiple sections of cabin bodies are welded to form the main cabin 1.

[0074] In this embodiment, the material of the main cabin 1 is a stainless steel-carbon steel composite plate, which includes a stainless steel layer on the inner side of the main cabin and a carbon steel layer on the outer side of the main cabin.

[0075] In this embodiment, a sealing surface is provided between one side of the main cabin door 2 and the bulkhead of the main cabin, and a hydraulic locking mechanism is provided on the other side of the main cabin door 2, which can press the main cabin door 2 against the sealing surface.

[0076] In this embodiment, the first vacuum argon filling device includes:

[0077] Vacuum equipment, connected to the main cabin 1;

[0078] Argon filling equipment, connected to the main cabin 1 through an argon filling pipeline;

[0079] A pressure detection unit is provided in the main cabin 1;

[0080] The control unit is connected with the vacuum pumping equipment, the argon filling equipment and the pressure detection unit.

[0081] In this embodiment, the argon filling pipeline includes a first pipeline and a second pipeline. The diameter of the first pipeline is larger than the diameter of the second pipeline. The first pipeline and the second pipeline are respectively provided with a first control valve and a second control valve. A pressure relief valve 9 is provided on the top of the main cabin 1. The first control valve and the second control valve are connected to the control unit. The control unit can first open the argon filling device and the first control valve when the first detection result of the pressure detection unit is within the first set pressure threshold range, and then close the first control valve and open the second control valve when the second detection result of the pressure detection unit is within the second set pressure threshold range.

[0082] In this embodiment, a temperature detection unit and a temperature control device are provided in the main cabin 1 .

[0083] In this embodiment, a gas circulation device is provided in the main cabin 1 .

[0084] In this embodiment, a ventilation structure is also included, and the ventilation structure includes:

[0085] An air supply device is provided inside the main cabin 1 on a side away from the main cabin door 2. The air supply device is connected to the interior of the main cabin 1 through an air supply pipe, and a vacuum valve is provided on the air supply pipe;

[0086] The main door opening amount detection structure and the main door 2 position detection structure can detect the opening amount of the main door 2;

[0087] When the opening amount of the main door 2 is within the set opening amount threshold range, the vacuum valve and the air supply device are opened in sequence.

[0088] In this embodiment, the auxiliary cabin 3 is provided with a vacuum extraction interface, an argon filling interface, a pressure sensor and an oxygen content detection device.

[0089] In summary, when the argon-filled cabin provided by the present invention is used for welding large titanium alloy complex structural parts, manual welding and automatic welding operations can be performed in the main cabin 1. The manual welding implementation method is to allow the welding worker to enter the main cabin 1 to implement the welding. The main cabin 1 is equipped with a dedicated personnel breathing system, airtight clothing, and manual welding protective measures. The breathing system can ensure the breathing safety of the personnel, the airtight clothing protects the atmosphere in the argon-filled cabin from being destroyed, and the manual welding protective measures protect the personnel from being injured by the welding arc, high temperature, and bumps. The specific implementation methods of the above three aspects are not limited. The automatic welding implementation method is to allow the robot to enter the main cabin 1 to implement welding. The robot is always in the cabin or enters and exits by other means. The robot is fixed or movable, and whether it is equipped with a displacement mechanism is not limited. As for how personnel and robots enter and exit the main cabin 1, this application does not limit it. The entry and exit of personnel or robots can be achieved through a transition cabin with a gas replacement function. The argon filling chamber of the present application is used to transport welding parts through the main cabin door 2. After the main cabin 1 and the auxiliary cabin 3 form the same argon protection state, parts, tools or consumables can be added to the main cabin 1 by opening the sealing door 4 and using the sealing gloves 7. It is suitable for welding large titanium alloy complex structural parts; the auxiliary cabin 3 is very small compared to the main cabin 1, which can save argon and improve work efficiency; sealing surfaces and hydraulic locking mechanisms are respectively provided on both sides of the main cabin door 2, which can ensure the sealing of the main cabin door 2 under normal pressure, negative pressure and positive pressure in the main cabin 1; when the main cabin 1 is evacuated and filled with argon, the first vacuum argon filling device has a first pipeline and a second pipeline with a large and a small diameter. The large-diameter first pipeline can realize rapid argon filling, and the small-diameter second pipeline can slowly fill argon after rapid argon filling to maintain a stable air pressure in the main cabin 1, and exhaust gas is discharged through the pressure relief valve 9, thereby improving argon filling efficiency and ensuring a gas protection state; the argon filling chamber also has a ventilation structure, which can timely ventilate the main cabin 1 in the event of an accident, thereby ensuring the safety of personnel and equipment.

[0090] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An argon-filled chamber for welding large titanium alloy complex structural parts, characterized in that: The argon-filled chamber includes: A main cabin, wherein a main cabin door is provided on one side of the main cabin; a first vacuum argon filling device connected to the main cabin; The auxiliary cabin is provided on the other side of the main cabin, the auxiliary cabin is connected to the main cabin through a sealed door, the auxiliary cabin is provided with an auxiliary cabin door, the auxiliary cabin is provided with a peek window and a glove port, the glove port is provided with a sealed glove, and a tray is provided within the reach of the arm in the auxiliary cabin, the tray is used to place parts, tools or consumables; The second vacuum argon filling device is connected to the auxiliary cabin.

2. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 1, characterized in that: The main cabin is a multi-section structure, and the multi-section cabin bodies are welded to form the main cabin.

3. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 1, characterized in that: The material of the main cabin is a stainless steel-carbon steel composite plate, and the stainless steel-carbon steel composite plate includes a stainless steel layer on the inner side of the main cabin and a carbon steel layer on the outer side of the main cabin.

4. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 1, characterized in that: A sealing surface is provided between one side of the main cabin door and the bulkhead of the main cabin, and a hydraulic locking mechanism is provided on the other side of the main cabin door, and the hydraulic locking mechanism can press the main cabin door against the sealing surface.

5. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 1, characterized in that: The first vacuum argon filling device comprises: A vacuum pumping device connected to the main cabin; an argon filling device connected to the main cabin via an argon filling pipeline; a pressure detection unit, disposed in the main cabin; A control unit is connected to the vacuum pumping device, the argon filling device and the pressure detection unit.

6. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 5, characterized in that: The argon filling pipeline includes a first pipeline and a second pipeline, the diameter of the first pipeline is larger than the diameter of the second pipeline, the first pipeline and the second pipeline are respectively provided with a first control valve and a second control valve, a pressure relief valve is provided on the top of the main cabin, the first control valve and the second control valve are connected to the control unit, and the control unit can first open the argon filling device and the first control valve when the first detection result of the pressure detection unit is within the first set pressure threshold range, and then close the first control valve and open the second control valve when the second detection result of the pressure detection unit is within the second set pressure threshold range.

7. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 1, characterized in that: A temperature detection unit and a temperature control device are provided in the main cabin.

8. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 1, characterized in that: A gas circulation device is provided in the main cabin.

9. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 1, characterized in that: Also included is a ventilation structure, the ventilation structure comprising: an air supply device, disposed inside the main cabin on a side away from the main cabin door, the air supply device being in communication with the interior of the main cabin via an air supply pipe, the air supply pipe being provided with a vacuum valve; A main door opening amount detection structure, wherein the main door position detection structure is capable of detecting the opening amount of the main door; When the opening amount of the main door is within the set opening amount threshold range, the vacuum valve and the air supply device are opened in sequence.

10. The argon-filled chamber for welding large titanium alloy complex structural parts according to claim 1, characterized in that: The auxiliary cabin is provided with a vacuum extraction interface, an argon filling interface, a pressure sensor and an oxygen content detection device.

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