Novel welding-free tee joint
The combination structure of upper and lower protective plates, cylindrical flanges, bolts and nuts solves the problem of welding and fixing existing pipeline maintenance tee components, achieving construction convenience and sealing, avoiding pipeline damage and improving utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG SHENGKAILONG OIL PIPELINE TECH SERVICE CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-05-15
AI Technical Summary
The existing pipeline maintenance tee components require welding for fixation, which makes construction inconvenient and easily damages the pipeline.
It adopts a combination structure of upper protective plate, lower protective plate, lower protective plate, cylinder flange, bolts and nuts, and is fixed to the pipeline through a detachable connection method to avoid welding. Combined with the design of plug handle and sealing ring, it achieves both construction convenience and sealing performance.
It achieves both ease of construction and sealing, while avoiding damage to pipelines from high temperatures and improving utilization.
Smart Images
Figure CN224245696U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pipeline maintenance technology, and in particular to a novel weld-free tee. Background Technology
[0002] A novel saddle-shaped plate frame assembly for pipe maintenance tee protection is disclosed in related technology (Announcement No.: CN220082475U), comprising a protective plate, a working pipe, a saddle-shaped plate frame, and a plug handle. The working pipe is radially welded to the side wall of the protective plate, and the plug handle is embedded inside the working pipe. The upper end of the saddle-shaped plate frame is fixedly installed on the lower surface of the plug handle. The inner wall of the working pipe has a variable diameter and a boss. After the plug handle is inserted into the working pipe from top to bottom, it will be locked at the boss. The surface of the boss is a concave concave surface, and the lower surface of the plug handle is surrounded by a concave convex surface, the tip of the concave angle of the convex surface matching the concave angle of the concave surface.
[0003] In the process of implementing the technical solution disclosed herein, it was found that the above technical solution has at least the following problems:
[0004] This new saddle-shaped plate bracket assembly for pipeline maintenance tee protection improves the bottom surface of the plug handle and the end face of the reducing boss on the working pipe. This allows for automatic alignment of the saddle-shaped plate with the pipeline angle after the plug handle is inserted into the working pipe, reducing the operational difficulty of saddle-shaped plate backfilling. However, the symmetrically distributed plates still require welding to fix them to the pipeline, which is not only inconvenient for construction but also prone to damaging the pipeline.
[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content
[0006] To provide a basic understanding of some aspects of the disclosed technical solutions, a brief summary is given below. This summary is not a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these technical solutions, but rather serves as an introduction to the detailed explanations that follow.
[0007] This disclosure provides a novel weld-free tee to solve the problems mentioned in the background section.
[0008] In some technical solutions, a novel weld-free tee for pipes with sidewall openings includes: an upper protective plate, fastened to the pipe and located at the pipe opening, with a through hole at its center; an upper cylindrical flange, connected to the outer side of the upper protective plate along the axial direction of the pipe and located on both sides of the upper protective plate along the radial direction of the pipe; a lower protective plate, fastened to the pipe and opposite to the upper protective plate; a lower cylindrical flange, connected to the outer side of the lower protective plate along the axial direction of the pipe and located on both sides of the lower protective plate along the radial direction of the pipe, with the lower cylindrical flanges on both sides opposite to the upper cylindrical flanges on both sides; first bolts, respectively passing through the opposite lower cylindrical flanges and upper cylindrical flanges on both sides; first nuts, respectively threaded onto multiple first bolts; a connecting pipe, welded to the upper protective plate and surrounding the through hole; a tee flange, welded to the connecting pipe; and a blind flange, detachably installed on the tee flange.
[0009] Optionally, it further includes: a plug handle located inside the tee flange and coaxially distributed with the tee flange, wherein a first annular groove is formed on the side of the plug handle; and a sealing ring fitted into the first annular groove and abutting against the inner side of the tee flange.
[0010] Optionally, the side of the tee flange is evenly provided with mounting holes, and the side of the plug handle is also provided with a second annular groove. The flange further includes: retaining rings, evenly distributed in a circular pattern within the second annular groove; retaining ring nuts, respectively connected to multiple retaining rings and located inside multiple mounting holes; retaining ring screws, respectively threaded to multiple retaining ring nuts; and retaining ring threaded sleeves, respectively threaded to multiple mounting holes and abutting against multiple retaining ring screws.
[0011] Optionally, it also includes: retaining ring plugs, which are respectively installed on the plurality of retaining ring sleeves.
[0012] Optionally, a stepped hole is also provided at the axis of the plug handle, and the plug handle further includes: an upper plug on the plug handle, which is installed at the top of the plurality of stepped holes respectively; a lower plug on the plug handle, which is installed at the bottom of the plurality of stepped holes respectively; a steel ball, which is installed inside the stepped hole and close to the upper plug on the plug handle; and a spring, which is installed inside the stepped hole, close to the lower plug on the plug handle, and abuts against the steel ball.
[0013] Optionally, it further includes: a ball pad, installed at the step of the stepped hole and abutting against the steel ball.
[0014] Optionally, it further includes: an upper limit half-ring, installed on the bottom surface of the blind plate; and a lower limit half-ring, installed on the top surface of the plug handle, wherein the lower limit half-ring and the upper limit half-ring are arranged in a circular pattern.
[0015] Optionally, it also includes: a metal spiral wound gasket installed between the tee flange and the blind flange.
[0016] Optionally, it further includes: second bolts, evenly inserted into the tee flange and the blind plate; and second nuts, threadedly connected to the plurality of second bolts.
[0017] Optionally, it further includes a round tube connected to the plug handle and extending into the connecting tube.
[0018] The novel weld-free tee provided in this disclosure can achieve the following technical effects:
[0019] This disclosure provides a novel weld-free tee for pipes with side-wall openings, comprising an upper protective plate, an upper cylindrical flange, a lower protective plate, a lower cylindrical flange, a first bolt, a first nut, a connecting pipe, a tee flange, and a blind flange. The upper protective plate is fastened to the pipe and located at the pipe opening. A through hole is formed at the center of the upper protective plate for liquid passage. The upper cylindrical flange is connected to the outer side of the upper protective plate along the axial direction of the pipe and located on both sides of the upper protective plate along the radial direction of the pipe; both upper cylindrical flanges serve as transition pieces to expand the connection area. The lower protective plate is fastened to the pipe and is opposite to the upper protective plate, together with the upper protective plate enclosing the pipe. The lower cylindrical flange is connected to the outer side of the lower protective plate along the axial direction of the pipe and located on both sides of the lower protective plate along the radial direction of the pipe; both lower cylindrical flanges also serve as transition pieces to expand the connection area. The two lower cylindrical flanges are respectively opposite to the two upper cylindrical flanges, jointly supporting the installation connector. The first bolt passes through the two opposite lower cylindrical flanges and the two upper cylindrical flanges. The first nut is threaded onto multiple first bolts. The connecting pipe is welded to the upper guard plate and surrounds the through-hole to guide liquid flow. The tee flange is welded to the connecting pipe to support the blind flange. The blind flange is detachably installed on the tee flange to seal or open the tee flange.
[0020] In use, the distance between the opposing lower and upper cylindrical flanges can be adjusted using multiple first bolts and nuts, ensuring a tight fit between the upper and lower protective plates and the pipeline. Compared to welding, this method is easier to implement and avoids damage to the pipeline caused by high temperatures. When the blind flange seals the tee flange, it prevents liquid flow in the pipeline. When the blind flange is opened, the liquid in the pipeline can be drained. Furthermore, because the upper and lower protective plates are detachably installed to the pipeline, they can be reused after disassembly, improving utilization. Additionally, the use of bolts as connectors offers advantages such as stable connection and ease of disassembly.
[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description
[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:
[0023] Figure 1 This is a front view schematic diagram of a novel weld-free tee provided in an embodiment of this disclosure;
[0024] Figure 2 This is a schematic diagram of the main cross-sectional structure of a novel weld-free tee provided in an embodiment of this disclosure;
[0025] Figure 3 yes Figure 2 Enlarged structural diagram at point A;
[0026] Figure 4 yes Figure 2 Enlarged structural diagram at point B;
[0027] Figure 5 This is a side view of a novel weld-free tee provided in an embodiment of the present disclosure;
[0028] Figure 6 This is a side cross-sectional view of a novel weld-free tee provided in an embodiment of this disclosure;
[0029] Figure 7 This is a top view schematic diagram of a novel weld-free tee provided in an embodiment of this disclosure;
[0030] Figure 8 This is a three-dimensional structural schematic diagram of a novel weld-free tee provided in an embodiment of this disclosure.
[0031] Figure label:
[0032] 1. Upper guard plate; 2. Upper cylinder flange; 3. Lower guard plate; 4. Lower cylinder flange; 5. First bolt; 6. First nut; 7. Connecting pipe; 8. Tee flange; 9. Blind flange; 10. Plug handle; 11. Sealing ring; 12. Snap ring; 13. Snap ring nut; 14. Snap ring screw; 15. Snap ring threaded sleeve; 16. Upper threaded plug on plug handle; 17. Lower threaded plug on plug handle; 18. Steel ball; 19. Spring; 20. Upper limit half ring; 21. Lower limit half ring; 22. Second bolt; 23. Second nut; 24. Round pipe. Detailed Implementation
[0033] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.
[0034] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0035] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.
[0036] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.
[0037] Unless otherwise stated, the term "multiple" means two or more.
[0038] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.
[0039] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.
[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.
[0041] Combination Figures 1 to 8 As shown, this disclosure provides a novel weld-free tee for pipes with sidewall openings, including an upper protective plate 1, an upper cylindrical flange 2, a lower protective plate 3, a lower cylindrical flange 4, a first bolt 5, a first nut 6, a connecting pipe 7, a tee flange 8, and a blind flange 9. The upper protective plate 1 is fastened to the pipe and located at the pipe opening. A through hole is provided at the center of the upper protective plate 1 for liquid to pass through. The upper cylindrical flange 2 is connected to the outer side of the upper protective plate 1 along the axial direction of the pipe and is located on both sides of the upper protective plate 1 along the radial direction of the pipe; both upper cylindrical flanges 2 serve as transition pieces to expand the connection area. The lower protective plate 3 is fastened to the pipe and is opposite to the upper protective plate 1, together with the upper protective plate 1 surrounding the pipe. The lower cylindrical flange 4 is connected to the outer side of the lower protective plate 3 along the axial direction of the pipe and is located on both sides of the lower protective plate 3 along the radial direction of the pipe; both lower cylindrical flanges 4 also serve as transition pieces to expand the connection area. The lower cylindrical flanges 4 on both sides are opposite to the upper cylindrical flanges 2 on both sides, jointly supporting the installation connectors. First bolts 5 are respectively inserted into the opposite lower cylindrical flanges 4 and upper cylindrical flanges 2 on both sides. First nuts 6 are threaded onto multiple first bolts 5. A connecting pipe 7 is welded to the upper protective plate 1 and surrounds the through hole, used to guide liquid flow. A tee flange 8 is welded to the connecting pipe 7 to support the installation of the blind flange 9. The blind flange 9 is detachably installed on the tee flange 8 for sealing or opening the tee flange 8.
[0042] This disclosure provides a novel weld-free tee. Multiple first bolts 5 and multiple first nuts 6 allow adjustment of the distance between the opposing lower cylindrical flange 4 and upper cylindrical flange 2, thereby ensuring a tight fit between the upper and lower protective plates 1 and 3 around the pipeline. Compared to welding, this method is easier to install and avoids damage to the pipeline caused by high temperatures. Furthermore, when the blind flange 9 seals the tee flange 8, it prevents liquid flow in the pipeline. When the blind flange 9 opens the tee flange 8, the liquid in the pipeline can be drained. Moreover, since the upper and lower protective plates 1 and 3 are detachably installed with the pipeline, they can be reused after disassembly, improving utilization. Additionally, using bolts as connectors offers advantages such as stable connection and ease of disassembly.
[0043] Optionally, combined Figure 2 , Figure 3 and Figure 4As shown, it also includes a plug handle 10 and a sealing ring 11. The plug handle 10 is located inside the tee flange 8 and is coaxially distributed with the tee flange 8. A first annular groove is formed on the side of the plug handle 10, which is used to limit the sealing ring 11. The sealing ring 11 is fitted into the first annular groove and abuts against the inner surface of the tee flange 8 to perform a sealing function.
[0044] In this embodiment of the disclosure, the plug handle 10 and the sealing ring 11 work together to improve the sealing performance and reduce liquid leakage.
[0045] Optionally, combined Figure 2 , Figure 3 and Figure 4 As shown, the tee flange 8 has evenly spaced mounting holes on its side, and the plug handle 10 also has a second annular groove on its side. It also includes retaining rings 12, retaining ring nuts 13, retaining ring screws 14, and retaining ring sleeves 15. The retaining rings 12 are evenly distributed in the second annular groove and are used to adjust the position of the plug handle 10. The retaining ring nuts 13 are connected to multiple retaining rings 12 and are located inside multiple mounting holes, respectively, and are used to drive the movement of multiple retaining rings 12. The retaining ring screws 14 are threaded to multiple retaining ring nuts 13 and are used to adjust the position of multiple retaining ring nuts 13. The retaining ring sleeves 15 are threaded to multiple mounting holes and abut against multiple retaining ring screws 14, all serving a limiting function.
[0046] In this embodiment, rotating multiple retaining ring screws 14 changes the position of multiple retaining ring nuts 13 on them through the interaction between the threads. Then, under the limiting action of multiple retaining ring sleeves 15, the position of multiple retaining rings 12 can be changed, thereby enabling the plug handle 10 to be located at the center of the tee flange 8, and thus making the sealing ring 11 uniformly stressed and improving the sealing effect.
[0047] Optionally, combined Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8 As shown, it also includes retaining ring plugs. The retaining ring plugs are respectively installed on multiple retaining ring sleeves 15.
[0048] In this embodiment of the disclosure, multiple retaining ring plugs are used to seal multiple retaining ring sleeves 15 to prevent foreign matter from entering.
[0049] Optionally, combined Figure 2 and Figure 4As shown, the stopper handle 10 also has stepped holes along its axis, and includes an upper plug 16, a lower plug 17, a steel ball 18, and a spring 19. The upper plug 16 is installed at the top of the stepped holes for sealing. The lower plug 17 is installed at the bottom of the stepped holes, and includes an infusion port along its axis. The steel ball 18 is installed inside the stepped holes, close to the upper plug 16, for sealing the stepped holes. The spring 19 is installed inside the stepped holes, close to the lower plug 17, and abuts against the steel ball 18 to provide elasticity.
[0050] In this embodiment, the stepped orifice, the lower plug 17 on the plug handle, the steel ball 18, and the spring 19 together form a one-way valve structure. When the upper plug 16 on the plug handle opens the stepped orifice, liquid can flow in one direction. When the upper plug 16 on the plug handle closes the stepped orifice, liquid flow is prevented.
[0051] Optionally, combined Figure 2 , Figure 4 and Figure 6 As shown, it also includes a ball pad. The ball pad is installed at the step of the stepped hole and abuts against the steel ball 18.
[0052] In this embodiment of the disclosure, the ball pad is used to increase the contact area with the steel ball 18 and improve the one-way sealing effect.
[0053] Optionally, combined Figure 2 , Figure 4 and Figure 6 As shown, it also includes an upper limit half-ring 20 and a lower limit half-ring 21. The upper limit half-ring 20 is installed on the bottom surface of the blind plate 9. The lower limit half-ring 21 is installed on the top surface of the plug handle 10, and the lower limit half-ring 21 and the upper limit half-ring 20 are arranged in a circle.
[0054] In this embodiment, the upper limit half-ring 20 and the lower limit half-ring 21 together serve as a limit to facilitate determining the relative positions of the blind plate 9 and the plug handle 10.
[0055] Optionally, combined Figure 2 , Figure 4 and Figure 6 As shown, it also includes a spiral wound gasket. The spiral wound gasket is installed between the tee flange 8 and the blind flange 9.
[0056] In this embodiment of the disclosure, the metal spiral wound gasket is used to improve the sealing performance in order to reduce leakage between the tee flange 8 and the blind flange 9.
[0057] Optionally, combined Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8As shown, it also includes second bolts 22 and second nuts 23. The second bolts 22 are evenly distributed through the tee flange 8 and the blind flange 9. The second nuts 23 are threaded onto multiple second bolts 22.
[0058] In this embodiment, a second bolt 22 and a second nut 23 are used as connecting parts to achieve detachable installation between the tee flange 8 and the blind flange 9. This has the advantages of stable connection and easy disassembly.
[0059] Optionally, combined Figure 2 and Figure 6 As shown, it also includes a circular tube 24. The circular tube 24 is connected to the plug handle 10 and extends into the connecting tube 7.
[0060] In this embodiment of the disclosure, the circular tube 24 is used to guide the flow of liquid and can support the installation of other components.
[0061] The foregoing description and accompanying drawings have fully illustrated embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of this disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.
Claims
1. A novel weld-free tee for pipes with sidewall openings, characterized in that, include: The upper protective plate is fastened to the pipe and located at the opening of the pipe, and a through hole is provided at the center of the upper protective plate; The upper cylinder flange is connected to the outer side of the upper protective plate along the axial direction of the pipeline, and located on both sides of the upper protective plate along the radial direction of the pipeline. The lower protective plate is fastened to the pipe and is opposite to the upper protective plate; The lower cylindrical flange is connected to the outer side of the lower protective plate along the axial direction of the pipeline and is located on both sides of the lower protective plate along the radial direction of the pipeline. The lower cylindrical flanges on both sides are respectively opposite to the upper cylindrical flanges on both sides. The first bolt is respectively inserted into the lower cylindrical flange and the upper cylindrical flange on both sides opposite to each other; The first nut is threadedly connected to a plurality of the first bolts; A connecting pipe is welded to the upper protective plate and surrounds the through hole; A tee flange is welded to the aforementioned connector; A blind flange, detachably mounted on the tee flange.
2. The novel weld-free tee according to claim 1, characterized in that, Also includes: The plug handle is located inside the tee flange and is coaxially distributed with the tee flange. A first annular groove is provided on the side of the plug handle. The sealing ring is fitted into the first annular groove and abuts against the inner side of the tee flange.
3. A novel weld-free tee according to claim 2, characterized in that, The tee flange has evenly spaced mounting holes on its side, and the plug handle also has a second annular groove on its side, further comprising: The retaining rings are evenly distributed in a circular shape in the second annular groove; Snap ring nuts are respectively connected to a plurality of snap rings and are respectively located inside a plurality of mounting holes; Each retaining ring screw is threadedly connected to a plurality of retaining ring nuts; The retaining ring threaded sleeves are threaded into the plurality of mounting holes and abut against the plurality of retaining ring screws.
4. A novel weld-free tee according to claim 3, characterized in that, Also includes: The retaining ring plugs are respectively installed on multiple retaining ring sleeves.
5. A novel weld-free tee according to claim 2, characterized in that, The plug handle also has a stepped hole at its axis, and further includes: The threaded plugs on the plug handle are respectively installed at the top of the multiple stepped holes; The plugs are installed at the bottom of the stepped holes respectively; A steel ball is installed inside the stepped hole and near the threaded plug on the plug handle; A spring is installed inside the stepped hole, near the lower threaded plug of the plug handle, and abuts against the steel ball.
6. A novel weld-free tee according to claim 5, characterized in that, Also includes: A ball pad is installed at the step of the stepped hole and abuts against the steel ball.
7. A novel weld-free tee according to claim 2, characterized in that, Also includes: An upper limit stop half-ring is installed on the bottom surface of the blind plate; The lower limit half-ring is installed on the top surface of the plug handle, and the lower limit half-ring and the upper limit half-ring are distributed in a circle.
8. A novel weld-free tee according to any one of claims 1 to 7, characterized in that, Also includes: A metal spiral wound gasket is installed between the tee flange and the blind flange.
9. A novel weld-free tee according to any one of claims 1 to 7, characterized in that, Also includes: The second bolt is evenly inserted into the tee flange and the blind flange; The second nut is threaded onto one of the second bolts.
10. A novel weld-free tee according to any one of claims 2 to 7, characterized in that, Also includes: A round tube, connected to the plug handle, and extending into the connecting tube.