Gas filtering and pipeline portable fixing integrated device

Abstract

The invention provides a gas filtering and pipeline portable fixing integrated device. The gas filtering and pipeline portable fixing integrated device comprises a pipeline fixing assembly and a filtering assembly which are arranged in a matched mode. The gas filtering function and the pipeline fixing function are integrated, stable and clean gas protection in the pipeline welding process is achieved, and the pipeline welding quality is improved; the device has the advantages of compact structure, simplicity and convenience in operation, reusability, high adaptability and the like, is suitable for various welding processes and working environments, and can effectively improve the welding quality and efficiency and reduce the welding defects.

Description

Technical Field

[0001] The present invention belongs to the field of aerospace technology protection, and in particular, relates to a gas filtering and pipeline convenient fixed integrated device. Background Art

[0002] In the manufacturing process of aerospace vehicles, welding is the key technology to achieve the connection of various components, which directly affects the structural integrity and safety of the spacecraft. Any welding defects may lead to serious safety accidents. Therefore, there are extremely high requirements for the quality, performance and prevention of excess materials of welding joints.

[0003] In the spacecraft piping system, welding technology is particularly important. As an important part of the spacecraft, the welding quality of the piping system is directly related to the sealing and functionality of the entire system. In the existing technology, in order to improve the welding quality, gas protection measures need to be adopted, such as using inert gases such as argon for protection.

[0004] However, the pipeline welding shielding gas equipment in the prior art has certain shortcomings. For example, the shielding gas source pipeline and the pipeline to be welded are generally directly connected and fixed by means of paper tape or plastic tape, which may introduce impurities into the shielding gas or new excess materials generated during the pipeline connection process, thereby affecting the safety of the pipeline system. Due to the space limitations of the spacecraft layout, the manufacturing process of the pipeline system, especially the small operating space for the pipeline welding process on the spacecraft, makes it inconvenient to connect the shielding gas source pipeline and the pipeline to be welded, and there is a risk that the shielding gas cannot be supplied in time due to the loose connection, affecting the quality of the weld.

[0005] The relevant prior art is as follows:

[0006] (1) Gas lens assembly for gas shielded arc welding torch (patent document US20020134760A1), which discloses a gas lens assembly for gas shielded welding torch to provide laminar gas flow to the welding pool. It includes a plurality of annular fine mesh inner filters, which are arranged at fixed axial intervals in an air chamber formed between the lens body and the lens sleeve; the filters are spaced at a predetermined distance by a plurality of wavy open mesh spacer disks arranged between the filters in a sandwich structure. The device fastens the components by means of a complex shape structure in a stop ring and a middle body structure. During welding, the device is not firm enough and the manufacturing process is complicated.

[0007] (2) An automatic welding device with a gas shielding function (patent document CN116117286A), which discloses an automatic welding device with a gas shielding function, relates to the field of welding technology, and includes a welding device and a workpiece. During the working process, the device is limited by a limit shaft, including multiple continuous rotations and linkage rotations of other components. The device has poor stability and the assembly and disassembly processes are complicated.

[0008] In response to the problems in the prior art, the present invention provides a gas filtering protection and pipeline convenient disassembly and assembly fixed integrated device which is light, compact, easy to operate, has good gas protection effect, and convenient and reliable pipeline fixation, so as to meet the strict requirements of spacecraft pipeline system welding. Summary of the invention

[0009] In view of the defects in the prior art, the purpose of the present invention is to provide a gas filtration and pipeline convenient fixed integrated device and an assembly and use method.

[0010] A gas filtering and pipeline convenient fixing integrated device provided by the present invention comprises: a pipeline fixing component, a filtering component;

[0011] The pipeline fixing assembly is provided with a claw, and the filter assembly is provided with a filter screen and a transfer pressure ring;

[0012] The clamping claw of the pipeline fixing assembly and the adapter pressing ring of the filter assembly are matched together, and the filter screen is arranged at one end where the adapter pressing ring and the clamping claw match.

[0013] Preferably, the pipeline fixing assembly further comprises: a cone sleeve;

[0014] The cone sleeve and the clamp are sequentially installed at one end of the pipeline to be welded, and the cone sleeve and the clamp are connected by threads.

[0015] Preferably, the cone sleeve is a structure with one end being a cylinder and the other end being a cone section, the outer surface of the cylindrical section is knurled, and the inner surface of the cylindrical section is threaded;

[0016] The claw is a cylindrical structure with a notch in the circumferential direction at one end of the outlet, a step at the other end, a thread and knurling on the outer surface, the thread matches the inner thread of the cone sleeve, the inner cavity has a conical step, and the inner diameter of the claw is slightly larger than the outer diameter of the corresponding specification of the pipe to be welded;

[0017] The cone sleeve is a cylindrical structure with an internal thread at the inlet end and knurling on the outside, and the outlet pipe is in a conical tightening shape; the internal thread matches the external thread of the claw, and as the thread is screwed in, the outlet end of the claw contacts and squeezes the cone section of the cone sleeve, causing the claw to deform and clamp.

[0018] Preferably, when fastening the pipeline to be welded, during the process of tightening the threads, the cone sleeve squeezes the claws to deform inwards and contact the outer surface of the pipeline, so that the claws embrace the pipeline to be welded;

[0019] When removing the pipeline to be welded, manually loosen the threads until the connected pipeline can be pulled out freely.

[0020] Preferably, the inner diameter of the claw is larger than the outer diameter of the pipe to be welded. When the claw is in a free state, the pipe to be welded can be freely inserted into the claw outlet. When the claw is squeezed, the outlet end deforms to clamp the pipe to be welded. When the claw is further squeezed, the outlet end deforms to embrace the pipe to be welded and clamp it tightly.

[0021] Preferably, the filter assembly further comprises: a support net;

[0022] The adapter pressure ring presses the combination of the filter screen and the support screen into the claw inlet to achieve fixation;

[0023] The adapter pressure ring is a cylindrical structure with a boss. The size of the boss at one end of the adapter pressure ring matches the end step of the claw. The end matching the claw is fixed with a filter screen and a support net, and the other end is connected to the protective gas source pipeline.

[0024] Preferably, the filter screen is welded to the edge of the support screen.

[0025] The support net is a coarse round stainless steel wire net, the size of which matches the step at the end of the claw;

[0026] The filter screen is a round special stainless steel filter screen, and its size is consistent with the supporting screen;

[0027] The conical step on the inner surface of the claw is used to limit the position of the pipeline to be welded when it is installed, so as to prevent the filter screen from being damaged by the pipeline to be welded.

[0028] According to the present invention, a method for assembling a gas filtration and pipeline convenient fixed integrated device comprises:

[0029] Step S1: spot welding the support mesh and the edge of the filter mesh together;

[0030] Step S2: Use the adapter pressure ring to press the support net and the filter net assembly into the end of the claw, and weld the adapter pressure ring and the outer surface of the claw together to form a set of devices with the corresponding matching cone sleeve; before welding the pipeline, connect the welding protection gas source pipeline to the end of the adapter pressure ring;

[0031] Step S3: insert one end of the pipe to be welded into the end of the cone section of the cone sleeve; and continue to insert the end of the claw where the notch is located, until it stops at the step of the cone surface of the inner cavity of the claw;

[0032] Step S4: Match and install the cone sleeve to the claw, and manually tighten the thread to complete the pipeline fixation;

[0033] Step S5: The welding shielding gas source is ventilated. After passing through the filter assembly, the clean shielding gas is filled to the welding position, and then the pipeline welding can be carried out;

[0034] Step S6: Manually loosen the thread between the cone sleeve and the claw until the pipeline can be freely pulled out, thus completing the pipeline removal.

[0035] Preferably, the assembly method of the gas filtration and pipeline convenient fixed integrated device is characterized by:

[0036] Use cone sleeves and claws of different sizes to connect and fix pipelines with different diameters to be welded;

[0037] The welding is carried out by gas tungsten arc welding, gas metal arc welding, plasma welding or laser welding.

[0038] According to a method for using a gas filtration and pipeline convenient fixed integrated device provided by the present invention, the gas filtration and pipeline convenient fixed integrated device provided by the present invention is used, comprising:

[0039] Step S1: Pass the corresponding specification of the pipe to be welded through the outlet of the cone sleeve and then insert it into the outlet of the claw;

[0040] Step S2: Connect the cone sleeve and the claw through threads and tighten manually;

[0041] Step S3: Connect the welding gas source pipeline to the inlet of the adapter ring, and then start welding;

[0042] Step S4: After welding is completed, manually loosen the screw joint until the pipe can be pulled out freely, and then dismantle it;

[0043] The gas filtering and pipeline convenient fixing integrated device is used in conjunction with automated welding equipment.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The present invention realizes stable and clean gas protection during pipeline welding, thereby realizing effective protection during welding and improving pipeline welding quality;

[0046] 2. The present invention has the advantages of compact structure, simple operation, reusability, strong adaptability, etc., and is suitable for a variety of welding processes and working environments;

[0047] 3. The present invention can effectively improve welding quality and efficiency, reduce welding defects, and has important industrial value;

[0048] 4. The present invention integrates the gas filtering and pipeline fixing functions into one, thereby solving the problems of the risk of introducing impurities and other unnecessary substances into the welding shielding gas and the convenient disassembly and fixing of the pipeline to be welded in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0050] Figure 1 This is a cross-sectional view of the structure of the gas filtration and pipeline convenient fixed integrated device after assembly of the present invention.

[0051] Figure 2 It is a schematic diagram of the appearance structure of the pipeline fixing component of the present invention.

[0052] Figure 3 Schematic diagram of pipeline fixing components for pipelines to be welded according to different specifications of embodiments of the present invention.

[0053] The figure shows:

[0054] DETAILED DESCRIPTION

[0055] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0056] like Figures 1 to 3 As shown, the embodiment of the present invention provides a gas filtering and pipeline convenient fixing integrated device, including: a pipeline fixing component 100, a filtering component 200; the two are connected together;

[0057] The pipeline fixing assembly 100 includes a cone sleeve 1 and a claw 2; to ensure that the pipeline is firm and does not fall off, the claw 2 and the cone sleeve 1 are sequentially installed at one end of the pipeline to be welded, and the cone sleeve 1 is connected with the claw 2 by threads; when tightening the pipeline to be welded, during the process of tightening the threads, the cone sleeve 1 squeezes the claw 2 to deform inward and contact the outer surface of the pipeline, and then the claw 2 embraces the pipeline to be welded, so as to achieve reliable fixation; when removing the pipeline to be welded, the threads are manually loosened until the connected pipeline can be freely pulled out. Further, the cone sleeve 1 is a cylindrical structure with one end and a cone section structure with knurling on the outer surface of the cylindrical section and threads on the inner surface of the cylindrical section; specifically, the cone sleeve 1 is a cylindrical structure with internal threads at the inlet end, knurling on the outside, and the outlet pipe is in a conical tightening shape; the internal threads match the external threads of the claw 2, and as the threads are screwed in, the outlet end of the claw 2 contacts and squeezes the cone section of the cone sleeve 1, so that the claw 2 is deformed and clamped. Furthermore, the claw 2 is a cylindrical structure with a notch in the circumferential direction at one end of the outlet, a step at the other end, and a thread and knurling on the outer surface. The thread matches the inner thread of the cone sleeve 1, and the inner cavity has a conical step. The inner diameter of the claw 2 is slightly larger than the outer diameter of the corresponding specification of the pipeline to be welded; the inner diameter of the claw 2 is slightly larger than the outer diameter of the pipeline to be welded, and the pipeline to be welded can be freely inserted into the outlet of the claw 2 when the claw 2 is in a free state; when the claw 2 is slightly squeezed, the outlet end is deformed to clamp the pipeline to be welded, and when the claw 2 is further squeezed, the outlet end is deformed to embrace the pipeline to be welded to achieve reliable clamping and fixing. The knurling on the outside of the claw 2 increases the friction force, and the thread can be tightened manually for easy disassembly and assembly. The conical step on the inner surface of the claw 2 is used to limit the position of the pipeline to be welded when it is installed to prevent the pipeline to be welded from damaging the filter 4.

[0058] The filter assembly 200 includes: a support net 3, a filter screen 4, and an adapter pressure ring 5; the filter screen 4 is used to filter gas impurities to ensure the cleanliness of the inner cavity of the pipeline, the support net 3 is used to prevent the filter screen 4 from deforming under a certain flow air pressure, and the adapter pressure ring 5 connects the filter assembly 200 with the pipeline fixing assembly 100, and is convenient for connection with the gas source of the welding shielding gas; specifically, the adapter pressure ring 5 presses the combination of the filter screen 4 and the support net 3 into the inlet of the claw 2 to achieve fixation, one end of the adapter pressure ring 5 is welded to the claw 2, and the other end is welded to the gas source pipeline. Furthermore, the filter screen 4 is connected to the edge of the support screen 3 by welding, and the filter screen 4 can filter gas impurity particles to ensure that the control of excess materials meets the requirements; further, the support screen 3 is a coarse mesh made of circular stainless steel wire, and its size matches the step at the end of the claw 2; the filter screen 4 is a circular special stainless steel filter screen with high filtration accuracy, and its size is consistent with the support screen 3; further, the adapter pressure ring 5 is a cylindrical structure with a boss, and the size of the boss at one end of the adapter pressure ring 5 matches the step at the end of the claw 2, and the other end is connected to the protective gas supply pipeline; further, the adapter pressure ring 5 is a cylindrical structure with an outlet matching the size of the inlet of the claw 2, and the filter screen 4 and the support screen 3 are fixed to the end matching the claw 2, and the other end is connected to the protective gas source pipeline.

[0059] The present invention will be described in more detail below.

[0060] The present invention also provides an assembly method of a gas filtering and pipeline convenient fixed integrated device, comprising:

[0061] Spot weld the edges of the support net 3 and the filter net 4 together; use the adapter pressure ring 5 to press the support net 3 and filter net 4 combination into the end of the claw 2, and weld the adapter pressure ring 5 and the outer surface of the claw 2 together to form a set of equipment with the corresponding matching cone sleeve 1; before pipeline welding, connect the welding shielding gas source pipeline to the end of the adapter pressure ring 5; insert one end of the pipeline to be welded into the end of the cone section of the cone sleeve 1; and continue to insert the end where the notch of the claw 2 is located, until it stops at the step of the conical surface of the inner cavity of the claw 2; install the cone sleeve 1 to the claw 2, and tighten the thread manually to complete the pipeline fixation; the welding shielding gas source is ventilated, and after passing through the filter assembly 200, the clean shielding gas is filled to the welding location, and the pipeline welding can be carried out; manually loosen the thread between the cone sleeve 1 and the claw 2 until the pipeline can be freely pulled out, and the pipeline removal is completed.

[0062] Furthermore, the use of cone sleeves 1 and claws 2 of different sizes and specifications can realize the connection and fixation of pipelines to be welded with different diameters without changing the connection interface with the welding shielding gas source. Furthermore, the welding uses tungsten inert gas shielded welding, metal inert gas shielded welding, plasma welding or laser welding. Furthermore, the gas filtration and pipeline convenient fixing integrated device of the present invention is used in conjunction with automated welding equipment.

[0063] The present invention also provides a method for using a gas filtration and pipeline convenient fixed integrated device, using a gas filtration and pipeline convenient fixed integrated device provided by the present invention, comprising the following steps:

[0064] Step S1, passing the corresponding specification of the to-be-welded pipe through the outlet of the cone sleeve 1, and then inserting it into the outlet of the claw 2;

[0065] Step S2, connecting the cone sleeve 1 and the claw 2 by threading and tightening manually;

[0066] Step S3, connect the welding gas source pipeline to the inlet of the adapter pressure ring 5, and then start welding;

[0067] Step S4, after welding is completed, manually loosen the screw joint until the pipe can be pulled out freely, and then remove it.

[0068] In summary, the present invention provides a gas filtration and pipeline convenient fixed integrated device and assembly and use method, aiming to provide an integrated solution to improve the efficiency and quality of the welding process. By integrating the gas filtration and pipeline fixing functions into one, stable and clean gas protection is achieved during pipeline welding, thereby achieving effective protection of the welding process and improving the quality of pipeline welding; it has the advantages of compact structure, simple operation, reusability, strong adaptability, etc., is suitable for a variety of welding processes and working environments, can effectively improve welding quality and efficiency, reduce welding defects, and has important industrial value; and by integrating the gas filtration and pipeline fixing functions into one, it solves the problems of the risk of introducing impurities and other excess materials into the welding protective gas in the prior art and the convenient disassembly and fixation of the pipeline to be welded. In general, it is suitable for industrial applications with high requirements for welding quality and high requirements for the cleanliness of the product cavity, such as aerospace, aviation, petrochemical, pressure vessel manufacturing and other fields, to meet the requirements of excess material protection and high-quality welding in the above fields. And the present invention realizes the portable disassembly and fixation of the protective gas pipeline and the pipeline to be welded, thereby improving the welding quality and production efficiency.

[0069] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0070] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A gas filtration and pipeline convenient fixed integrated device, characterized in that: include: Pipeline fixing assembly (100), filter assembly (200); The pipeline fixing assembly (100) is provided with a claw (2), and the filter assembly (200) is provided with a filter screen (4) and an adapter pressure ring (5); The clamping claw (2) of the pipeline fixing assembly (100) and the adapter pressure ring (5) of the filter assembly (200) are matched together, and the filter screen is arranged at one end of the adapter pressure ring (5) that matches with the clamping claw (2).

2. The gas filtration and pipeline convenient fixing integrated device according to claim 1, characterized in that: The pipeline fixing assembly (100) further comprises: a cone sleeve (1); The clamping claw (2) and the cone sleeve (1) are sequentially installed at one end of the pipeline to be welded, and the cone sleeve (1) and the clamping claw (2) are connected via threads.

3. The gas filtration and pipeline convenient fixing integrated device according to claim 2, characterized in that: The cone sleeve (1) is a structure with one end being a cylinder and the other end being a cone section, the outer surface of the cylinder section being knurled and the inner surface of the cylinder section being threaded; The claw (2) is a cylindrical structure with a notch in the circumferential direction at one end of the outlet, a step at the other end, and a thread and knurling on the outer surface. The thread matches the inner thread of the cone sleeve (1), and the inner cavity has a conical step. The inner diameter of the claw (2) is slightly larger than the outer diameter of the corresponding specification of the pipeline to be welded; The cone sleeve (1) is a cylindrical structure with an internal thread at the inlet end and knurling on the outside, and the outlet pipe is in a conical tightening shape; the internal thread matches the external thread of the claw (2), and as the thread is screwed in, the outlet end of the claw (2) contacts and squeezes the cone section of the cone sleeve (1), causing the claw (2) to deform and tighten.

4. The gas filtration and pipeline convenient fixing integrated device according to claim 3, characterized in that: When tightening the pipeline to be welded, during the process of tightening the threads, the cone sleeve (1) squeezes the claws (2) to deform inwards and contact the outer surface of the pipeline, so that the claws (2) embrace the pipeline to be welded; When removing the pipeline to be welded, manually loosen the threads until the connected pipeline can be pulled out freely.

5. The gas filtration and pipeline convenient fixing integrated device according to claim 3, characterized in that: The inner diameter of the clamp (2) is larger than the outer diameter of the pipe to be welded. When the clamp (2) is in a free state, the pipe to be welded can be freely inserted into the outlet of the clamp (2). When the clamp (2) is in a squeezed state, the outlet end is deformed to clamp the pipe to be welded. When the clamp (2) is further squeezed, the outlet end is deformed to embrace the pipe to be welded and clamp it tightly.

6. The gas filtration and pipeline convenient fixing integrated device according to claim 1, characterized in that: The filter assembly (200) further comprises: a support net (3); The adapter pressure ring (5) presses the combination of the filter screen (4) and the support screen (3) into the inlet of the claw (2) to achieve fixation; The adapter pressure ring (5) is a cylindrical structure with a boss. The size of the boss at one end of the adapter pressure ring (5) matches the end step of the claw (2). The end matching the claw (2) is fixed with a filter screen (4) and a support net (3), and the other end is connected to the protective gas source pipeline.

7. The gas filtration and pipeline convenient fixing integrated device according to claim 6, characterized in that: The filter screen (4) is welded to the edge of the support screen (3). The support net (3) is a coarse round stainless steel wire net, and its size matches the step at the end of the claw (2); The filter screen (4) is a circular special stainless steel filter screen, and its size is consistent with that of the support screen (3); The conical step on the inner surface of the claw (2) is used to limit the position of the pipeline to be welded when it is installed, so as to prevent the pipeline to be welded from damaging the filter screen (4).

8. An assembly method for the gas filtration and pipeline convenient fixed integrated device according to any one of claims 1 to 7, characterized in that: include: Step S1: spot welding the edges of the support mesh (3) and the filter mesh (4) together; Step S2: using a transfer press ring (5) to press the support net (3) and the filter net (4) assembly into the end of the claw 2, and welding the transfer press ring (5) and the outer surface of the claw (2) together to form a set of devices with the corresponding matching cone sleeve (1); Before welding the pipeline, connect the welding shielding gas source pipeline to the end of the adapter pressure ring (5); Step S3: insert one end of the pipe to be welded into the end of the cone section of the cone sleeve (1); and continue to insert the end of the notch of the claw (2) until it stops at the step of the inner conical surface of the claw (2); Step S4: Slip the cone sleeve (1) onto the outside of the claw (2), and manually tighten the threads to complete the pipe fixation; Step S5: The welding shielding gas source is ventilated, and after passing through the filter assembly (200), the clean shielding gas is filled to the welding position, and then the pipeline welding can be carried out; Step S6: Manually loosen the thread between the cone sleeve (1) and the claw (2) until the pipeline can be freely pulled out, thus completing the pipeline removal.

9. The method for assembling the gas filtration and pipeline convenient fixed integrated device according to claim 8, characterized in that: Cone sleeves (1) and claws (2) of different sizes and specifications are used to achieve connection and fixation of pipelines to be welded with different diameters; The welding is carried out by gas tungsten arc welding, gas metal arc welding, plasma welding or laser welding.

10. A method for using a gas filter and a convenient integrated pipe fixing device, using the gas filter and a convenient integrated pipe fixing device according to any one of claims 1 to 7, comprising: Step S1: Pass the pipe to be welded of corresponding specifications through the outlet of the cone sleeve (1) and then insert it into the outlet of the claw (2); Step S2: Connect the cone sleeve (1) and the claw (2) by threading and tighten manually; Step S3: Slip the welding gas source pipeline onto the inlet of the adapter ring (5) and start welding; Step S4: After welding is completed, manually loosen the screw joint until the pipe can be pulled out freely, and then dismantle it; The gas filtering and pipeline convenient fixing integrated device is used in conjunction with automated welding equipment.

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