Pipe assembly

Abstract

The utility model provides a kind of pipeline assembly, wherein, the periphery of the opening of main pipe has saddle-shaped flanging, saddle-shaped limiting ring is arranged in the side wall of pipe, that is, the shape of saddle-shaped limiting ring is matched with the shape of saddle-shaped flanging, so that after one end of pipe is inserted into opening, two upturned ends of saddle-shaped limiting ring and two upturned ends of saddle-shaped flanging are one-to-one corresponding, two concave ends of saddle-shaped limiting ring and two concave ends of saddle-shaped flanging are one-to-one corresponding.Through the above setting, the area that saddle-shaped limiting ring and saddle-shaped flanging can produce contact in circumference is more, overall contact area is big, gap value is significantly reduced.In this way, welding heat of saddle-shaped flanging and saddle-shaped limiting ring in different regions of weld circumferential direction is relatively concentrated, welding penetration is big, so that good welding quality is realized in different regions of weld circumferential direction, welding strength and sealing property are improved, so that leakage in welding position of pipeline assembly when using is avoided.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, and more specifically, to a pipeline assembly. Background Technology

[0002] In some piping assemblies, there are interconnected main pipes and piping, wherein the main pipe has an opening with an outwardly protruding flange on its side wall, and the piping has a circular retaining ring protruding from its side wall. One end of the piping is inserted into the opening, and the retaining ring and flange are welded together to achieve the connection between the piping and the main pipe.

[0003] In practical applications, such as when the outer diameter of the main pipe is greater than or equal to 19 mm and the opening diameter is greater than or equal to 15.8 mm, the flange formed around the opening is saddle-shaped, with two upward-curving ends and two downward-curving ends. During assembly of the main pipe and piping, the two upward-curving ends of the saddle-shaped flange can contact the circular retaining ring of the piping, but there is a large gap between the two downward-curving ends of the saddle-shaped flange and the circular retaining ring. During welding, this large gap between the saddle-shaped flange and the retaining ring leads to heat dispersion, low weld penetration, and poor weld quality. This area is prone to leakage during use, affecting product quality and reliability. Utility Model Content

[0004] This invention provides a pipeline assembly to solve the problems of poor welding quality and easy leakage in piping and main pipes with saddle-shaped flanges.

[0005] To address the above problems, this utility model provides a pipeline assembly, which includes:

[0006] The main pipe has openings on its side walls, and the periphery of the openings has saddle-shaped flanges that protrude from the side walls of the main pipe along its radial direction.

[0007] The piping has a saddle-shaped limiting ring on its side wall, which protrudes from the side wall of the piping along the radial direction.

[0008] One end of the pipe is inserted into the opening. The two upturned ends of the saddle-shaped limiting ring and the two upturned ends of the saddle-shaped flange correspond one-to-one. The two concave ends of the saddle-shaped limiting ring and the two concave ends of the saddle-shaped flange correspond one-to-one. The saddle-shaped flange and the saddle-shaped limiting ring are welded in the circumferential direction.

[0009] Furthermore, before welding, at least a portion of the saddle-shaped flange and the saddle-shaped limiting ring are in contact with the saddle-shaped flange, and the gap between the saddle-shaped flange and the saddle-shaped limiting ring at different positions is K, where K≤0.5mm; after welding, the gap between the saddle-shaped flange and the saddle-shaped limiting ring is filled with solder.

[0010] Furthermore, the saddle-shaped limiting ring is formed from a portion of the sidewall of the piping through an upsetting process.

[0011] Furthermore, the inner diameter of the piping is the same at different locations, and the saddle-shaped limiting ring is integrally formed on the outer circumference of the piping.

[0012] Furthermore, the outer diameter of the main pipe is greater than or equal to 19 mm and less than or equal to 42 mm, the diameter of the opening is greater than or equal to 15.8 mm and less than 29 mm, and the outer diameter of the piping is greater than or equal to 15.7 mm and less than or equal to 28.7 mm.

[0013] Furthermore, the axis of the opening and the axis of the main pipe are located on the same setting plane, and the upper edge of the projection of the saddle-shaped flange on the setting plane is the first arc edge, with the radius of curvature of the first arc edge between 6mm and 15mm.

[0014] Furthermore, the axis of the opening and the axis of the main pipe are located on the same setting plane. The upper edge of the projection of the main pipe on the setting plane is the setting edge. In the axial direction of the opening, the distance L1 between the upturned end of the saddle-shaped flange and the setting edge is 2mm to 7mm, and the distance L2 between the concave end of the saddle-shaped flange and the setting edge is 2mm to 8mm.

[0015] Furthermore, the axis of the opening and the axis of the main pipe are located on the same setting plane, and the lower edge of the projection of the saddle-shaped limiting ring on the setting plane is the second arc-shaped edge, with the radius of curvature of the second arc-shaped edge between 6mm and 15mm.

[0016] Furthermore, the axis of the opening and the axis of the main pipe are located on the same setting plane. The lower edge of the projection of the saddle-shaped limiting ring on the setting plane is the second arc-shaped edge, and the upper edge of the projection of the saddle-shaped limiting ring on the setting plane is the third arc-shaped edge. The distance between the second arc-shaped edge and the third arc-shaped edge is 0.75mm to 2.5mm.

[0017] Furthermore, in the axial direction of the opening, the distance L3 between the upturned end of the saddle-shaped limiting ring and the end face of the pipe inserted into the opening is 7mm to 15mm, and the distance L4 between the concave end of the saddle-shaped limiting ring and the end face of the pipe inserted into the opening is 2mm to 6mm.

[0018] In this design, the periphery of the main pipe opening has a saddle-shaped flange. The limiting ring on the side wall of the piping is also designed as a saddle-shaped limiting ring, meaning its shape matches the saddle-shaped flange. This ensures that when one end of the piping is inserted into the opening, the two upward-curving ends of the saddle-shaped limiting ring correspond one-to-one with the two upward-curving ends of the saddle-shaped flange, and the two downward-curving ends of the saddle-shaped limiting ring correspond one-to-one with the two downward-curving ends of the saddle-shaped flange. This arrangement results in a large circumferential contact area between the saddle-shaped limiting ring and the saddle-shaped flange, significantly reducing any gaps between them. Consequently, during circumferential welding of the saddle-shaped flange and the saddle-shaped limiting ring, the welding heat is concentrated in different areas of the weld circumference, resulting in a deep weld penetration. This ensures good welding quality in all areas of the weld circumferentially, improving weld strength and sealing, and preventing leaks at the weld location during pipe assembly use. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of a piping assembly provided in an embodiment of the present invention is shown;

[0021] Figure 2 It shows Figure 1 A 3D diagram of the supervisor in the middle;

[0022] Figure 3 It shows Figure 1 A front view of the supervisor in the middle;

[0023] Figure 4 It shows Figure 1 A schematic diagram of the piping in the diagram.

[0024] The above figures include the following reference numerals:

[0025] 10. Main pipe; 11. Opening; 12. Saddle-shaped flange; 121. First arc edge; 13. Set edge;

[0026] 20. Piping; 21. Saddle-shaped limiting ring; 211. Second arc-shaped edge; 212. Third arc-shaped edge. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] like Figures 1 to 4 As shown, this application provides a piping assembly, which includes:

[0029] The main pipe 10 has an opening 11 on its side wall. The periphery of the opening 11 has a saddle-shaped flange 12, which protrudes from the side wall of the main pipe 10 along the radial direction.

[0030] Pipe 20, the side wall of pipe 20 is provided with a saddle-shaped limiting ring 21, the saddle-shaped limiting ring 21 protrudes from the side wall of pipe 20 along the radial direction of pipe 20;

[0031] One end of the pipe 20 is inserted into the opening 11. The two upturned ends of the saddle-shaped limiting ring 21 correspond one-to-one with the two upturned ends of the saddle-shaped flange 12. The two concave ends of the saddle-shaped limiting ring 21 correspond one-to-one with the two concave ends of the saddle-shaped flange 12. The saddle-shaped flange 12 and the saddle-shaped limiting ring 21 are welded in the circumferential direction.

[0032] In this design, the periphery of the opening 11 of the main pipe 10 has a saddle-shaped flange 12, and a saddle-shaped limiting ring 21 is provided on the side wall of the piping 20. That is, the shape of the saddle-shaped limiting ring 21 matches the shape of the saddle-shaped flange 12. Thus, when one end of the piping 20 is inserted into the opening, the two upward-curved ends of the saddle-shaped limiting ring 21 correspond one-to-one with the two upward-curved ends of the saddle-shaped flange 12, and the two downward-curved ends of the saddle-shaped limiting ring 21 correspond one-to-one with the two downward-curved ends of the saddle-shaped flange 12. Through this arrangement, the saddle-shaped limiting ring 21 and the saddle-shaped flange 12 can have a larger contact area in the circumferential direction, increasing the overall contact area. Even if there are gaps between the saddle-shaped limiting ring 21 and the saddle-shaped flange 12 in some areas, the gap value is significantly reduced. During the circumferential welding process of the saddle-shaped flange 12 and the saddle-shaped limiting ring 21, the welding heat is concentrated in different areas of the weld circumferential direction, resulting in a large weld penetration. This achieves good welding quality in different areas of the weld circumferential direction, improves welding strength and sealing, and prevents leakage at the welding position during use of the pipeline assembly.

[0033] Before welding, at least a portion of the saddle-shaped flange 12 and the saddle-shaped limiting ring 21 are in contact with the saddle-shaped flange 12, and the gap between the saddle-shaped flange 12 and the saddle-shaped limiting ring 21 at different positions is K, where K ≤ 0.5 mm; after welding, the gap between the saddle-shaped flange 12 and the saddle-shaped limiting ring 21 is filled with solder.

[0034] By setting the gaps at different positions between the saddle-shaped flange 12 and the saddle-shaped limiting ring 21 within the aforementioned range, the welding heat is concentrated in different areas of the weld circumference during welding, resulting in a large weld penetration. Furthermore, due to the small gaps, the molten weld material easily fills the gaps, thereby ensuring welding quality and improving welding strength and the sealing of the welding position.

[0035] In some embodiments, the saddle-shaped limiting ring 21 is formed from a portion of the sidewall of the pipe 20 through an upsetting process. The mold used in the upsetting process is designed with a saddle-shaped groove, referencing the shape and dimensions of the saddle-shaped flange 12. After upsetting the pipe 20, the saddle-shaped limiting ring 21 is formed within the saddle-shaped groove, thus matching the shape and dimensions of the saddle-shaped limiting ring 21 with the saddle-shaped flange 12. Using this process, the saddle-shaped limiting ring 21 can be manufactured using straight pipe as raw material.

[0036] In some embodiments, the inner diameter of the pipe 20 is equal at different locations, and the saddle-shaped limiting ring 21 is integrally formed on the outer circumferential surface of the pipe 20. In this method, the pipe 20 and the saddle-shaped limiting ring 21 are integrally injection molded using a designed mold.

[0037] In this application, the outer diameter of the main pipe 10 is greater than or equal to 19 mm and less than or equal to 42 mm, the diameter of the opening 11 is greater than or equal to 15.8 mm and less than 29 mm, and the outer diameter of the piping 20 is greater than or equal to 15.7 mm and less than or equal to 28.7 mm. For the main pipe 10 and opening 11 within this size range, the flange of the pulled-out opening 11 is saddle-shaped. Therefore, the limiting ring of the piping 20 is set as a saddle-shaped limiting ring 21, so that the shapes of the limiting ring and the flange match. After the main pipe 10 and piping 20 are assembled, the gap between the saddle-shaped limiting ring 21 and the saddle-shaped flange 12 is small and the contact area is large. Thus, after welding, the saddle-shaped limiting ring 21 and the saddle-shaped flange 12 have high welding strength and good sealing performance, avoiding leakage.

[0038] In this case, the axis of the opening 11 and the axis of the main pipe 10 are located on the same set plane, such as... Figure 2 and Figure 3As shown, the upper edge of the projection of the saddle-shaped flange 12 onto the set surface is the first arc-shaped edge 121, and the radius of curvature of the first arc-shaped edge 121 is between 6mm and 15mm. Setting the radius of curvature of the first arc-shaped edge 121 between 6mm and 15mm can prevent the saddle-shaped flange 12 from being difficult to form or cracking during the forming process.

[0039] like Figure 3 As shown, the axis of the opening 11 and the axis of the main pipe 10 are located on the same setting plane. The upper edge of the projection of the main pipe 10 on the setting plane is the setting edge 13. In the axial direction of the opening 11, the distance L1 between the upturned end of the saddle-shaped flange 12 and the setting edge 13 is 2mm to 7mm, and the distance L2 between the concave end of the saddle-shaped flange 12 and the setting edge 13 is 2mm to 8mm.

[0040] The distance L1 between the upturned end of the saddle-shaped flange 12 and the set edge 13 is set between 2mm and 7mm to avoid the upturned end being too low and affecting the connection strength with the piping 20, and to avoid the upturned end being too high and causing the saddle-shaped flange 12 to crack. The distance L2 between the concave end of the saddle-shaped flange 12 and the set edge 13 is set between 2mm and 8mm to avoid the concave end being too low and causing a significant impact on the welding quality.

[0041] In this application, the axis of the opening 11 and the axis of the main pipe 10 are located on the same setting plane. The lower edge of the projection of the saddle-shaped limiting ring 21 onto the setting plane is the second arc-shaped edge 211, and the radius of curvature of the second arc-shaped edge 211 is between 6 mm and 15 mm. After the main pipe 10 and the piping 20 are assembled, the first arc-shaped edge 121 of the saddle-shaped flange 12 and the second arc-shaped edge 211 of the saddle-shaped limiting ring 21 are the closest areas between the saddle-shaped flange 12 and the saddle-shaped limiting ring 21.

[0042] With the above parameter settings, the radius of curvature of the second arc-shaped edge 211 matches the radius of curvature of the first arc-shaped edge 121 of the saddle-shaped flange 12. In this way, the shapes of the saddle-shaped flange 12 and the saddle-shaped limiting ring 21 match. After the main pipe 10 and the piping 20 are assembled, the gap between the saddle-shaped limiting ring 21 and the saddle-shaped flange 12 is small and the contact area is large. Thus, after welding, the saddle-shaped limiting ring 21 and the saddle-shaped flange 12 have high welding strength and good sealing performance.

[0043] In this application, the axis of the opening 11 and the axis of the main pipe 10 are located on the same setting plane, such as... Figure 4As shown, the lower edge of the projection of the saddle-shaped limiting ring 21 onto the setting surface is the second arc-shaped edge 211, and the upper edge of the projection of the saddle-shaped limiting ring 21 onto the setting surface is the third arc-shaped edge 212. The distance between the second arc-shaped edge 211 and the third arc-shaped edge 212 is 0.75mm to 2.5mm. The distance between the second arc-shaped edge 211 and the third arc-shaped edge 212 is the thickness of the saddle-shaped limiting ring 21. Setting the distance between the second arc-shaped edge 211 and the third arc-shaped edge 212 within the above range avoids both the saddle-shaped limiting ring 21 being too thin, affecting the structural strength, and the saddle-shaped limiting ring 21 being too thick, making it difficult to process and form.

[0044] like Figure 4 As shown, in the axial direction of the opening 11, the distance L3 between the upward-curved end of the saddle-shaped retaining ring 21 and the end face of the pipe 20 inserted into the opening 11 is 7mm to 15mm, and the distance L4 between the downward-curved end of the saddle-shaped retaining ring 21 and the end face of the pipe 20 inserted into the opening 11 is 2mm to 6mm. These parameter ranges prevent the saddle-shaped retaining ring 21 from being too curved and difficult to form, while ensuring that the pipe 20 has sufficient length to be inserted into the opening 11, thereby guaranteeing the connection strength between the main pipe 10 and the pipe 20.

[0045] In the above scheme, the periphery of the opening 11 of the main pipe 10 has a saddle-shaped flange 12, and a saddle-shaped limiting ring 21 is provided on the side wall of the piping 20. That is, the shape of the saddle-shaped limiting ring 21 matches the shape of the saddle-shaped flange 12. In this way, after one end of the piping 20 is inserted into the opening, the two upturned ends of the saddle-shaped limiting ring 21 correspond one-to-one with the two upturned ends of the saddle-shaped flange 12, and the two concave ends of the saddle-shaped limiting ring 21 correspond one-to-one with the two concave ends of the saddle-shaped flange 12. Through the above arrangement, the saddle-shaped limiting ring 21 and the saddle-shaped flange 12 can have more contact areas in the circumferential direction, and the overall contact area is large. Even if there are gaps in some areas between the saddle-shaped limiting ring 21 and the saddle-shaped flange 12, the gap value is significantly reduced. During the circumferential welding process of the saddle-shaped flange 12 and the saddle-shaped limiting ring 21, the welding heat is concentrated in different areas of the weld circumferential direction, resulting in a large weld penetration. This achieves good welding quality in different areas of the weld circumferential direction, improves welding strength and sealing, and prevents leakage at the welding position during use of the pipeline assembly.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0048] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0049] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0050] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0051] The above descriptions are merely some embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A piping assembly, characterized in that, The piping assembly includes: The main pipe (10) has an opening (11) on its side wall, and the periphery of the opening (11) has a saddle-shaped flange (12), which protrudes from the side wall of the main pipe (10) along the radial direction of the main pipe (10). Pipe (20), the side wall of the pipe (20) is provided with a saddle-shaped limiting ring (21), the saddle-shaped limiting ring (21) protrudes from the side wall of the pipe (20) along the radial direction of the pipe (20); One end of the pipe (20) is inserted into the opening (11). The two upturned ends of the saddle-shaped limiting ring (21) correspond one-to-one with the two upturned ends of the saddle-shaped flange (12). The two concave ends of the saddle-shaped limiting ring (21) correspond one-to-one with the two concave ends of the saddle-shaped flange (12). The saddle-shaped flange (12) and the saddle-shaped limiting ring (21) are welded in the circumferential direction.

2. The piping assembly according to claim 1, characterized in that, Before welding, at least a portion of the saddle-shaped flange (12) and the saddle-shaped limiting ring (21) are in contact with the saddle-shaped flange (12), and the gap between the saddle-shaped flange (12) and the saddle-shaped limiting ring (21) at different positions is K, where K≤0.5mm; After welding, the gap between the saddle-shaped flange (12) and the saddle-shaped limiting ring (21) is filled with solder.

3. The piping assembly according to claim 1, characterized in that, The saddle-shaped limiting ring (21) is formed from a portion of the sidewall of the pipe (20) by an upsetting process.

4. The piping assembly according to claim 1, characterized in that, The inner diameter of the pipe (20) is the same at different positions, and the saddle-shaped limiting ring (21) is integrally formed on the outer circumferential surface of the pipe (20).

5. The piping assembly according to claim 1, characterized in that, The outer diameter of the main pipe (10) is greater than or equal to 19 mm and less than or equal to 42 mm, the diameter of the opening (11) is greater than or equal to 15.8 mm and less than 29 mm, and the outer diameter of the piping (20) is greater than or equal to 15.7 mm and less than or equal to 28.7 mm.

6. The piping assembly according to claim 1, characterized in that, The axis of the opening (11) and the axis of the main tube (10) are located on the same setting surface. The upper edge of the projection of the saddle-shaped flange (12) on the setting surface is a first arc edge (121), and the radius of curvature of the first arc edge (121) is between 6 mm and 15 mm.

7. The piping assembly according to claim 1, characterized in that, The axis of the opening (11) and the axis of the main tube (10) are located on the same setting surface. The upper edge of the projection of the main tube (10) on the setting surface is the setting edge (13). In the axial direction of the opening (11), the distance L1 between the upturned end of the saddle-shaped flange (12) and the setting edge (13) is 2mm to 7mm, and the distance L2 between the concave end of the saddle-shaped flange (12) and the setting edge (13) is 2mm to 8mm.

8. The piping assembly according to claim 1, characterized in that, The axis of the opening (11) and the axis of the main tube (10) are located on the same setting surface. The lower edge of the projection of the saddle-shaped limiting ring (21) on the setting surface is a second arc-shaped edge (211), and the radius of curvature of the second arc-shaped edge (211) is between 6 mm and 15 mm.

9. The piping assembly according to claim 1, characterized in that, The axis of the opening (11) and the axis of the main tube (10) are located on the same setting plane. The lower edge of the projection of the saddle-shaped limiting ring (21) on the setting plane is the second arc-shaped edge (211), and the upper edge of the projection of the saddle-shaped limiting ring (21) on the setting plane is the third arc-shaped edge (212). The distance between the second arc-shaped edge (211) and the third arc-shaped edge (212) is 0.75mm to 2.5mm.

10. The piping assembly according to claim 1, characterized in that, In the axial direction of the opening (11), the distance L3 between the upturned end of the saddle-shaped limiting ring (21) and the end face of the pipe (20) inserted into the opening (11) is 7mm to 15mm, and the distance L4 between the concave end of the saddle-shaped limiting ring (21) and the end face of the pipe (20) inserted into the opening (11) is 2mm to 6mm.

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