Pipe fitting
By designing a pipe fitting including main pipe and branch pipe, the problem of the inability to completely discharge the medium in the pipeline is solved, and good discharge and cost control of the medium are achieved.
Patent Information
- Application Number
- CN202311732823.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2025-06-17
AI Technical Summary
In the prior art, medium at low points in the pipeline cannot be completely discharged, and the way of accessing the drain valve will increase the cost of pipeline layout.
A pipe fitting is designed, including a main pipe and a branch pipe. The branch pipe connects to the main pipe through an opening. The extension direction of the branch pipe intersects with the main pipe. The cross-section is set so that the central axis of the branch pipe is located in the cross-section. The busbar formed by the intersection of the inner surface of the branch pipe and the inner surface of the main pipe is tangent to the inner surface of the main pipe.
Through this design, the bottom of the inner surface of the branch pipe can be located on the same level as the bottom of the inner surface of the main pipe, avoiding segment differences, ensuring that the medium can be completely discharged, and reducing material costs.
Smart Images
Figure CN120160010A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pipelines, and particularly to a pipe fitting. Background Art
[0002] Internal media of a pipeline is usually discharged by connecting a cross pipe or an emptying valve. However, in the way of connecting a cross pipe, due to the elevation difference between the main pipe and the cross pipe connected thereto, the media at the lowest point of the pipeline cannot be completely discharged. While in the way of connecting an emptying valve, the layout cost of the pipeline will increase. Summary of the Invention
[0003] An embodiment of this application discloses a pipe fitting, which can solve the problem that the media at the low point in the pipeline cannot be discharged in the related art.
[0004] To achieve the above object, this application discloses a pipe fitting, including: a main pipe, the main pipe is provided with an opening; a branch pipe, the branch pipe communicates with the main pipe through the opening, and the extending direction of the branch pipe intersects with the extending direction of the main pipe; a set cross-section, wherein, the central axis of the branch pipe is located in the cross-section, and the generatrix formed by the intersection of the inner surface of the branch pipe and the cross-section is tangent to the contour formed by the intersection of the inner surface of the main pipe and the cross-section.
[0005] Optionally, at least part of the branch pipe extends into the main pipe from the opening.
[0006] Optionally, the opening forms a first end face on the main pipe, the first end face is connected to the inner surface of the main pipe, and one side of the branch pipe facing the main pipe is a second end face, and at least part of the second end face is used to abut against the first end face.
[0007] Optionally, the second end face is divided into a first region face and a second region face, the first region face abuts against the first end face, and the second region face is flush with the inner surface of the main pipe.
[0008] Optionally, the extension line of the projection formed by the first end face on the cross-section intersects with the center of the projection formed by the inner surface of the main pipe on the cross-section.
[0009] Optionally, the branch pipe is located outside the main pipe and is butt-welded to the main pipe.
[0010] Optionally, the branch pipe has a second end face facing the main pipe, and a solder filling gap is formed between the second end face and the outer surface of the main pipe.
[0011] Optionally, the distance between the second end face and the outer surface of the main pipe increases in the direction away from the opening.
[0012] Optionally, it further includes a side pipe, the side pipe is connected to a side of the branch pipe facing away from the main pipe, and the main pipe, the branch pipe and the side pipe are communicated in sequence.
[0013] Optionally, a third end face of the branch pipe for connecting the side pipe is a conical surface, and a fourth end face of the side pipe for connecting the branch pipe is also a conical surface.
[0014] It can be seen that the pipe fitting of the present application has the following advantages with the above settings:
[0015] The present application discloses a pipe fitting, including: a main pipe, the main pipe is provided with an opening; a branch pipe, the branch pipe is communicated with the main pipe through the opening, and the extending direction of the branch pipe intersects with the extending direction of the main pipe; a set cross-section, wherein, the central axis of the branch pipe is located in the cross-section, and the generatrix formed by the intersection of the inner surface of the branch pipe and the cross-section is tangent to the contour formed by the intersection of the inner surface of the main pipe and the cross-section.
[0016] In the present application, media such as gas and liquid flow in the main pipe, and the branch pipe is used to discharge the media remaining in the main pipe. Through the setting that the generatrix is tangent to the inner surface of the main pipe, the bottom of the inner surface of the branch pipe and the bottom of the inner surface of the main pipe can be located on the same horizontal plane, so that the inner surface of the main pipe and the inner surface of the branch pipe are connected more smoothly, avoiding the occurrence of a step difference, and further avoiding the abnormality that the media remains at the low point of the inner surface of the main pipe due to the step difference and cannot be discharged from the branch pipe.
[0017] In summary, using the pipe fitting of the present application can avoid the low points on the inner surface of the main pipe where media are likely to remain compared with the setting of the cross-connecting pipe, so as to ensure better discharge of the media in the main pipe; compared with the setting of the drain valve, it can reduce the overall quantity of materials, thereby reducing the material cost. In this way, the pipe fitting of the present application can balance the discharge quality of the media and cost control, and is suitable for popularization and use. Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0019] Figure 1 It is the front view of the pipe fitting disclosed in the present application;
[0020] Figure 2 It is the structural diagram of the pipe fitting disclosed in the present application using socket welding;
[0021] Figure 3 Disclosed by the present applicationFigure 2 Exploded view;
[0022] Figure 4 Structural diagram of a pipe fitting using butt welding disclosed in this application;
[0023] Figure 5 Another structural diagram of a pipe fitting using butt welding disclosed in this application.
[0024] Explanation of reference numerals in the drawings:
[0025] 10 - Main pipe,
[0026] 11 - Opening, 12 - First end face,
[0027] 20 - Branch pipe,
[0028] 21 - Generatrix,
[0029] 22 - Second end face,
[0030] 221 - First regional face, 222 - Second regional face,
[0031] 23 - Third end face,
[0032] 30 - Solder filling gap,
[0033] 40 - Side pipe,
[0034] 41 - Fourth end face,
[0035] 50 - Inner pipe. Specific embodiments
[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0037] In the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.
[0038] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.
[0039] In addition, the terms "install", "set", "provided with", "connect", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0040] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, components or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, components or parts. Unless otherwise specified, the meaning of "a plurality" is two or more.
[0041] In the related art, the internal medium of a pipeline is usually discharged by connecting a cross-connecting pipe or an exhaust valve. However, in the way of connecting a cross-connecting pipe, due to the elevation difference between the main pipe and the cross-connecting pipe connected thereto, the medium at the lowest point of the pipeline cannot be completely discharged. And in the way of connecting an exhaust valve, the layout cost of the pipeline will be increased. To solve such problems, the technical solution of this application is thus generated. The following will be described in conjunction with Figures 1 to 5 be elaborated.
[0042] This application discloses a pipe fitting, including a main pipe 10 and a branch pipe 20. Among them, the main pipe 10 is provided with an opening 11, the branch pipe 20 communicates with the main pipe 10 through the opening 11, and the extending direction of the branch pipe 20 intersects with the extending direction of the main pipe 10, for example, they are perpendicular to each other. A cross-section is set. Among them, the cross-section can be perpendicular to the central axis of the main pipe 10, the central axis of the branch pipe 20 can be located in the cross-section, and the generatrix 21 formed by the intersection of the inner surface of the branch pipe 20 and the cross-section is tangent to the contour formed by the intersection of the inner surface of the main pipe 10 and the cross-section. Here, the inner surface of the branch pipe 20 can be understood as being generated by rotating the generatrix 21 around the central axis of the branch pipe 20 by 360°.
[0043] In this application, media such as gas and liquid flow in the main pipe 10, and the branch pipe 20 is used to discharge the media remaining in the main pipe 10. By arranging the bus bar 21 to be tangent to the inner surface of the main pipe 10, the bottom of the inner surface of the branch pipe 20 and the bottom of the inner surface of the main pipe 10 can be located on the same horizontal plane, so that the inner surface of the main pipe 10 and the inner surface of the branch pipe 20 are connected more smoothly, avoiding the appearance of a step difference, and further avoiding the abnormality that the media remains at the low point of the inner surface of the main pipe 10 due to the step difference and cannot be discharged from the branch pipe 20.
[0044] In summary, using the pipe fittings of this application can avoid the low points on the inner surface of the main pipe 10 where media is likely to remain compared with the setting of the cross-connecting pipe, so as to ensure the better discharge of the media in the main pipe 10; and compared with the setting of the drain valve, it can reduce the overall quantity of materials, thereby reducing the material cost. In this way, the pipe fittings of this application can balance the discharge quality of the media and cost control, and are suitable for popularization and use.
[0045] Optionally, for the connection method of the main pipe 10 and the branch pipe 20, for example Figures 2 to 3 As shown, at least a part of the branch pipe 20 extends into the main pipe 10 from the opening 11, so that the branch pipe 20 is connected to the main pipe 10 by socket welding. As a pipeline connection method, socket welding is often used for the connection of small-diameter pipes. After forming, it is similar in appearance to the internal thread connection. The socket welding forms a fillet weld. Socket welding can generally be used for small pipe diameters less than or equal to DN40, which is more economical.
[0046] Optionally, the opening 11 forms a first end face 12 on the main pipe 10. The first end face 12 is connected to the inner surface of the main pipe 10. One side of the branch pipe 20 facing the main pipe 10 is the second end face 22. At least a part of the second end face 22 is used to abut against the first end face 12 to control the degree of the branch pipe 20 extending into the main pipe 10, thereby realizing the limit of the branch pipe 20.
[0047] Optionally, the second end face 22 is divided into a first region face 221 and a second region face 222. The first region face 221 abuts against the first end face 12, and the second region face 222 is flush with the inner surface of the main pipe 10. In this way, it can prevent the part of the branch pipe 20 extending into the inner cavity of the main pipe 10, thereby avoiding the branch pipe 20 interfering with the flow of the media in the main pipe 10. And when the main pipe 10 is the outer pipe of the jacket pipe, it can avoid the inner pipe of the jacket pipe being scratched due to the excessive extension of the branch pipe 20 into the main pipe 10.
[0048] Optionally, the extension line of the projection formed by the first end face 12 in the cross-section intersects the center of the projection formed by the inner surface of the main pipe 10 in the cross-section. The above-mentioned cross-section can be understood as the plane where the central axes of the main pipe 10 and the branch pipe 20 are located together. In this way, the position where the first end face 12 is located is the position where the thickness of the main pipe 10 is the largest. After the branch pipe 20 is connected to the main pipe 10, the main pipe 10 can have more materials to bear the branch pipe 20, ensuring the stability of the pipe fitting structure.
[0049] In some other optional embodiments, such as Figure 4 and Figure 5 shown, the branch pipe 20 is located outside the main pipe 10 and is butt-welded to the main pipe 10. The butt-welding forms a butt weld, which is also a commonly used pipeline connection method. Analyzing from the strength and stress conditions of the weld, the butt joint is superior to the socket joint. Therefore, the butt joint form is suitable for occasions with higher pressure grades and harsh usage conditions. Generally speaking, butt welding is usually used for pipeline connections above DN40.
[0050] Optionally, the branch pipe 20 has a second end face 22 facing the main pipe 10. A solder filling gap 30 is formed between the second end face 22 and the outer surface of the main pipe 10. The solder filling gap 30 is used to fill solder to ensure the welding stability between the branch pipe 20 and the main pipe 10.
[0051] Optionally, the distance between the second end face 22 and the outer surface of the main pipe 10 increases in the direction away from the opening 11. In this way, it can ensure that the solder filling gap 30 has a larger space to accommodate more solder, further ensuring the welding stability between the branch pipe 20 and the main pipe 10.
[0052] Optionally, the pipe fitting further includes a side pipe 40. The side pipe 40 is connected to the side of the branch pipe 20 facing away from the main pipe 10. The main pipe 10, the branch pipe 20, and the side pipe 40 are connected in sequence. The side pipe 40 can be understood as any structure such as an elbow or a tee, further enriching the functions of the pipe fitting of the present application.
[0053] Optionally, the side of the branch pipe 20 for connecting the side pipe 40 is a third end face 23, and the side of the side pipe 40 for connecting the branch pipe 20 is a fourth end face 41. Both the third end face 23 and the fourth end face 41 are conical surfaces. The way of conical surface contact can increase the contact area between the branch pipe 20 and the side pipe 40, thereby improving the connection stability and sealing performance.
[0054] Optionally, the branch pipe 20 and the side pipe 40 are welded together. The distance between the third end face 23 and the central axis of the branch pipe 20 increases in the direction away from the main pipe 10, that is, the port of the branch pipe 20 facing away from the main pipe 10 is a funnel mouth to facilitate the butt joint with the side pipe 40.
[0055] Optionally, such as Figure 1As shown, the pipe fitting further includes an inner pipe 50. The main pipe 10 is sleeved with the inner pipe 50 so that the main pipe 10 and the inner pipe 50 form a jacketed pipe. The main pipe 10 is the outer pipe of the jacketed pipe. The branch pipe 20 communicates with the gap between the inner pipe 50 and the main pipe 10 to discharge the medium between the main pipe 10 and the inner pipe 50.
[0056] It should be noted here that for the branch pipe 20 part of the pipe fitting of the present application, relevant dimension calculations can be carried out according to GB / T20801. Specifically, according to the principle that the area of the opening on the main pipe 10 is equal to the area of the branch pipe 20, the calculation of the opening reinforcement area is carried out; then relevant checks are carried out according to AD2000 B9, which will not be elaborated here. In this way, based on AD2000 B9 as the theoretical basis, the finally obtained dimensions of the branch pipe 20 are more in line with the standard requirements.
[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A pipe fitting, characterized in that, Comprising: A main pipe (10), the main pipe (10) being provided with an opening (11); A branch pipe (20), the branch pipe (20) communicating with the main pipe (10) through the opening (11), the extending direction of the branch pipe (20) intersecting the extending direction of the main pipe (10); A set cross-section, wherein the central axis of the branch pipe (20) is located in the cross-section, and a generatrix (21) formed by the intersection of the inner surface of the branch pipe (20) and the cross-section is tangent to a contour formed by the intersection of the inner surface of the main pipe (10) and the cross-section.
2. The pipe fitting according to claim 1, characterized in that, At least a part of the branch pipe (20) extends into the main pipe (10) through the opening (11).
3. The pipe fitting according to claim 2, characterized in that, The opening (11) forms a first end face (12) on the main pipe (10), and the first end face (12) connects the inner surface of the main pipe (10). One side of the branch pipe (20) facing the main pipe (10) is a second end face (22), and at least a part of the second end face (22) is used to abut against the first end face (12).
4. The pipe fitting according to claim 3, characterized in that, The second end face (22) is divided into a first region face (221) and a second region face (222), the first region face (221) abuts against the first end face (12), and the second region face (222) is flush with the inner surface of the main pipe (10).
5. The pipe fitting according to claim 3, characterized in that, An extension line of a projection formed by the first end face (12) on the cross-section intersects the center of a projection formed by the inner surface of the main pipe (10) on the cross-section.
6. The pipe fitting according to claim 1, characterized in that, The branch pipe (20) is located outside the main pipe (10) and is butt-welded to the main pipe (10).
7. The pipe fitting according to claim 6, characterized in that, The branch pipe (20) has a second end face (22) facing the main pipe (10), and a solder filling gap (30) is formed between the second end face (22) and the outer surface of the main pipe (10).
8. The pipe fitting according to claim 7, characterized in that, The distance between the second end face (22) and the outer surface of the main pipe (10) increases in a direction away from the opening (11).
9. The pipe fitting according to claim 7, characterized in that, It further includes a side pipe (40), the side pipe (40) being connected to a side of the branch pipe (20) facing away from the main pipe (10), and the main pipe (10), the branch pipe (20) and the side pipe (40) are communicated in sequence.
10. The pipe fitting according to claim 9, characterized in that, One side of the branch pipe (20) for connecting the side pipe (40) is a third end face (23), and one side of the side pipe (40) for connecting the branch pipe (20) is a fourth end face (41), and both the third end face (23) and the fourth end face (41) are conical surfaces.