A new self-locking tee
By designing annular grooves and a combination structure of cam disc, pin, locking ring, and connecting rod on the inner wall of the tee flange and the plug handle, the problem of leakage in the anti-rotation structure of the plug handle is solved, and the stable connection and sealing of the self-locking tee are achieved.
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
- 2025-07-25
- Publication Date
- 2026-06-23
Smart Images
Figure CN224397411U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pipeline maintenance technology, and in particular to a novel self-locking tee. Background Technology
[0002] A related technology (publication number: CN220016559U) discloses a plug handle anti-rotation structure, including a protective plate, a working tube, and a plug handle. The working tube is radially disposed on the side wall of the protective plate, and the two are connected to form a tee. The top of the working tube is a flange, and a pin hole is radially disposed on the flange, in which a traction pin is rotatably installed. The inner wall of the working tube is a variable diameter pipe wall, and the plug handle is engaged inside the working tube. Multiple positioning block grooves are centrally symmetrically disposed on the inner side wall of the working tube, and a positioning block is radially slidably installed in each positioning block groove. The side wall of each positioning block has a through hole, through which the traction line passes sequentially, and both ends are fixed to the traction pin.
[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] The anti-rotation structure of this plug handle allows workers to simply use a tool to rotate the traction pin, screwing it inwards to secure the plug handle. Furthermore, the double reinforcement of the traction pin and the plug ensures the traction line can continuously pull the positioning block, achieving a sealing effect through the plug. However, because there is a pin hole on the flange, there is a risk of solution leaking out through the pin hole.
[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 self-locking tee to solve the problems mentioned in the background section.
[0008] In some technical solutions, the novel self-locking tee includes: a tee flange, the inner wall of which has an annular inner groove; a plug handle located inside the tee flange, the side of which has an annular outer groove opposite to the annular inner groove, a groove at the center of the top surface of the plug handle, and multiple through holes evenly distributed around the center of the plug handle and communicating with the annular outer groove and the groove; and a cam disc located inside the groove. A rectangular hole is formed at the center of the cam disk, and multiple arc-shaped slots are formed at the edge of the cam disk. The multiple arc-shaped slots are evenly distributed around the rectangular hole and extend into the rectangular hole. Pins are located inside each of the arc-shaped slots. Locking rings are evenly distributed between the inner annular groove and the outer annular groove. Connecting rods are slidably inserted through each of the through holes. One end of each of the multiple connecting rods is connected to one of the multiple locking rings, and the other end of each of the multiple connecting rods is connected to one of the multiple pins.
[0009] Optionally, it also includes a blind flange, which is detachably mounted on the tee flange.
[0010] Optionally, it also includes: bolts, evenly inserted into the blind plate and the tee flange; and nuts, threaded onto the plurality of bolts.
[0011] Optionally, it further includes: a connecting plate located inside the groove and connected to the top surface of the cam plate, wherein a circular hole is provided at the center of the connecting plate; a lower limiting half ring installed on the top surface of the connecting plate; and an upper limiting half ring installed on the bottom surface of the blind plate, wherein the upper limiting half ring and the lower limiting half ring are circularly distributed.
[0012] Optionally, it also includes: a metal spiral wound gasket installed between the tee flange and the blind flange.
[0013] Optionally, it also includes: a lifting lug, mounted on the top surface of the blind plate.
[0014] Optionally, it further includes: a connecting pipe welded to the tee flange; an upper protective plate welded to the connecting pipe; and a lower protective plate welded to the upper protective plate, wherein the lower protective plate and the upper protective plate together surround the pipeline.
[0015] Optionally, it further includes: baffles, located at the two weld seams of the upper and lower protective plates respectively, and both abutting against the outer wall of the pipe.
[0016] Optionally, it also includes a circular tube mounted on the bottom surface of the plug handle.
[0017] Optionally, it also includes a sealing ring installed between the outer side of the plug handle and the inner side of the tee flange.
[0018] The present technical solution provides a novel self-locking tee, which can achieve the following technical effects:
[0019] This disclosure provides a novel self-locking tee, comprising a tee flange, a plug handle, a cam disc, a pin, a locking ring, and a connecting rod. The inner wall of the tee flange has an annular inner groove, which serves as a limiting element. The plug handle is located inside the tee flange, and its side has an annular outer groove opposite to the annular inner groove, which also serves as a limiting element. A groove is formed at the center of the top surface of the plug handle to accommodate the cam disc. Multiple through holes are formed radially around the center of the plug handle, connecting the annular outer groove and the groove, all for supporting and mounting a sliding connecting rod. The cam disc is located inside the groove, with a rectangular hole at its center and multiple arc-shaped slots along its edge, evenly distributed around the rectangular hole and extending towards it, each for accommodating a pin. The pin is located inside each arc-shaped slot and can slide along the extension direction of the slots. The locking ring plates are evenly distributed between the inner and outer annular grooves, and can slide along the gap between them. Connecting rods are slidably inserted through each through hole; one end of each connecting rod is connected to a locking ring plate, and the other end is connected to a pin, all for transmitting driving force.
[0020] In use, when the cam disc rotates under external force, its multiple arc-shaped slots rotate accordingly. Driven by these slots and guided by the through holes, multiple pins move multiple connecting rods closer together or further apart, which in turn moves multiple locking rings closer together or further apart. When the locking rings are close together, they move into the outer annular groove, allowing the plug handle to be installed inside the tee flange. When the locking rings are apart, they move into the inner annular groove, fixing the plug handle inside the tee flange, thus achieving a self-locking function. Furthermore, there is no need to drill holes on the side of the tee flange and then fix it with external connectors, thereby reducing the risk of leakage.
[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 self-locking 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 self-locking tee provided in an embodiment of this disclosure;
[0025] Figure 3 yes Figure 2 Enlarged structural diagram at point A;
[0026] Figure 4 This is a top view schematic diagram of a novel self-locking tee provided in an embodiment of this disclosure;
[0027] Figure 5 This is a top sectional view of a novel self-locking tee provided in an embodiment of this disclosure;
[0028] Figure 6 This is a three-dimensional structural diagram of a novel self-locking tee provided in an embodiment of this disclosure;
[0029] Figure 7 This is a partial three-dimensional structural schematic diagram of a novel self-locking tee provided in an embodiment of this disclosure.
[0030] Figure label:
[0031] 1. Tee flange; 2. Plug handle; 3. Cam plate; 4. Pin; 5. Locking ring plate; 6. Connecting rod; 7. Blind flange; 8. Bolt; 9. Nut; 10. Connecting plate; 11. Lower limit half ring; 12. Upper limit half ring; 13. Lifting lug; 14. Connecting pipe; 15. Upper guard plate; 16. Lower guard plate; 17. Stop bar; 18. Round pipe; 19. Sealing ring. Detailed Implementation
[0032] 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.
[0033] 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.
[0034] 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.
[0035] 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.
[0036] Unless otherwise stated, the term "multiple" means two or more.
[0037] 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.
[0038] 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.
[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.
[0040] Combination Figures 1 to 7As shown, this disclosure provides a novel self-locking tee, including a tee flange 1, a plug handle 2, a cam disc 3, a pin 4, a locking ring 5, and a connecting rod 6. The inner wall of the tee flange 1 has an annular inner groove, which serves as a limiting feature. The plug handle 2 is located inside the tee flange 1, and its side has an annular outer groove opposite to the annular inner groove, which also serves as a limiting feature. A groove is formed at the center of the top surface of the plug handle 2, which accommodates the cam disc 3. Multiple through holes are formed in the radial direction of the plug handle 2, evenly distributed around its center and connecting to the annular outer groove and the groove, all used to support and install the sliding connecting rod 6. The cam disc 3 is located inside the groove, with a rectangular hole at its center and multiple arc-shaped slots at its edge, evenly distributed around the rectangular hole and extending towards it, each used to accommodate the pin 4. Pins 4 are located inside each arc-shaped slot and can slide along the extension direction of the slots. Locking ring pieces 5 are evenly distributed between the inner and outer annular grooves and can slide along the gap between them. Connecting rods 6 are slidably inserted through each through hole. One end of each connecting rod 6 is connected to a locking ring piece 5, and the other end is connected to a pin 4, all for transmitting driving force.
[0041] This disclosure provides a novel self-locking tee. When the cam disc 3 rotates under external force, multiple arc-shaped slots on it rotate accordingly. Driven by these arc-shaped slots and guided by the multiple through holes, multiple pins 4 drive multiple connecting rods 6 to move closer together or further apart, thereby causing multiple ring locking pieces 5 to move closer together or further apart. When the ring locking pieces 5 move closer together, they can move into the inner annular groove, allowing the plug handle 2 to be installed inside the tee flange 1. When the ring locking pieces 5 move further apart, they can move into the inner annular groove, fixing the plug handle 2 inside the tee flange 1, thus completing the self-locking function. Furthermore, there is no need to drill holes on the side of the tee flange 1 and then fix it with external connectors, thus reducing the risk of leakage.
[0042] Optionally, combined Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, it also includes a blind flange 7. The blind flange 7 is detachably mounted on the tee flange 1.
[0043] In this embodiment of the disclosure, a detachable blind flange 7 is also included, which is installed on the tee flange 1 and is used to open or close the tee flange 1.
[0044] Optionally, combined Figure 1 , Figure 2 and Figure 6As shown, it also includes bolts 8 and nuts 9. Bolts 8 are evenly inserted into the blind flange 7 and the tee flange 1. Nuts 9 are threaded onto multiple bolts 8.
[0045] In this embodiment, the device further includes bolts 8 evenly inserted through the blind flange 7 and the tee flange 1, and nuts 9 threadedly connected to the bolts 8. Using bolts 8 and nuts 9 as connectors enables detachable installation between the blind flange 7 and the tee flange 1, providing advantages such as stable connection and easy disassembly.
[0046] Optionally, combined Figure 2 and Figure 3 As shown, it also includes a connecting plate 10, a lower limiting half-ring 11, and an upper limiting half-ring 12. The connecting plate 10 is located inside the groove and connected to the top surface of the cam plate 3. A circular hole is provided at the center of the connecting plate 10. The circular hole is opposite to the rectangular hole, so that the rectangular bent rod can be inserted into the rectangular hole through the circular hole, thereby facilitating the rotation of the cam plate 3 by hand. The lower limiting half-ring 11 is installed on the top surface of the connecting plate 10 and serves as a limiting element. The upper limiting half-ring 12 is installed on the bottom surface of the blind plate 7 and also serves as a limiting element. The upper limiting half-ring 12 and the lower limiting half-ring 11 are arranged in a circular pattern.
[0047] In this embodiment, after the blind flange 7 is fixed to the tee flange 1, the lower limit plate and the upper limit plate can play a limiting role, thereby preventing the connecting disc 10 from rotating. This further prevents the cam disc 3 from rotating automatically, ensuring a self-locking effect.
[0048] Optionally, combined Figures 1 to 7 As shown, it also includes a spiral wound gasket. The spiral wound gasket is installed between the tee flange 1 and the blind flange 7.
[0049] In this embodiment, a spiral wound gasket is also included, installed between the tee flange 1 and the blind flange 7. The spiral wound gasket serves to improve the sealing performance and prevent liquid leakage between the tee flange 1 and the blind flange 7.
[0050] Optionally, combined Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, it also includes a lifting lug 13. The lifting lug 13 is installed on the top surface of the blind plate 7.
[0051] In this embodiment, a lifting lug 13 is also included, which is mounted on the top surface of the blind flange 7. The lifting lug 13 is used to connect to a lifting device to facilitate the installation of the blind flange 7.
[0052] Optionally, combined Figure 1 , Figure 2 and Figure 6As shown, it also includes a connecting pipe 14, an upper protective plate 15, and a lower protective plate 16. The connecting pipe 14 is welded to the tee flange 1. The upper protective plate 15 is welded to the connecting pipe 14. The lower protective plate 16 is welded to the upper protective plate 15, and the lower protective plate 16 and the upper protective plate 15 together surround the pipeline.
[0053] In this embodiment, the lower protective plate 16 and the upper protective plate 15 together surround the pipeline and are then connected and fixed by welding to tightly fasten them to the pipeline. The connecting pipe 14 is used to weld between the upper protective plate 15 and the tee flange 1 to determine the relative position of the upper protective plate 15 and the tee flange 1.
[0054] Optionally, combined Figure 1 , Figure 2 and Figure 6 As shown, it also includes a baffle 17. The baffle 17 is located at the two weld seams of the upper protective plate 15 and the lower protective plate 16, and both abut against the outer wall of the pipe.
[0055] In this embodiment, the system further includes baffles 17 located at two weld seams on the upper guard plate 15 and the lower guard plate 16, respectively, both abutting against the outer wall of the pipe. Both baffles serve a protective function to prevent damage to the pipe from the high temperatures at the two weld seams.
[0056] Optionally, combined Figure 2 and Figure 3 As shown, it also includes a circular tube 18. The circular tube 18 is mounted on the bottom surface of the plug handle 2.
[0057] In this embodiment, a circular tube 18 is also included, which is mounted on the bottom surface of the plug handle 2. The circular tube 18 is used to support the installation of a device such as a saddle plate for sealing.
[0058] Optionally, combined Figure 2 and Figure 3 As shown, it also includes a sealing ring 19. The sealing ring 19 is installed between the outer side of the plug handle 2 and the inner side of the tee flange 1.
[0059] In this embodiment, a sealing ring 19 is further included, which is installed between the outer side of the plug handle 2 and the inner side of the tee flange 1. The sealing ring 19 is used to improve the sealing performance and reduce leakage of solution from between the outer side of the plug handle 2 and the inner side of the tee flange 1.
[0060] 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 self-locking tee, characterized in that, include: A tee flange, wherein an annular inner groove is formed on the inner wall of the tee flange; A plug handle is located inside the tee flange. The side of the plug handle has an annular outer groove opposite to the annular inner groove. A groove is formed at the center of the top surface of the plug handle. The plug handle has multiple through holes along its radial direction. The multiple through holes are evenly distributed around the center of the plug handle and connect the annular outer groove and the groove. A cam disk is located inside the groove. A rectangular hole is formed at the center of the cam disk, and multiple arc-shaped slots are formed at the edge of the cam disk. The multiple arc-shaped slots are evenly distributed around the rectangular hole and extend toward the rectangular hole. Pins are located inside each of the arc-shaped slots; Locking ring pieces are evenly distributed between the inner annular groove and the outer annular groove; Each connecting rod is slidably inserted through each of the through holes. One end of each of the connecting rods is connected to a plurality of locking ring pieces, and the other end of each of the connecting rods is connected to a plurality of pins.
2. The novel self-locking tee according to claim 1, characterized in that, Also includes: A blind flange, detachably mounted on the tee flange.
3. A novel self-locking tee according to claim 2, characterized in that, Also includes: Bolts are evenly inserted into the blind flange and the tee flange; Nuts are threaded onto the plurality of bolts.
4. A novel self-locking tee according to claim 2, characterized in that, Also includes: A connecting plate is located inside the groove and connected to the top surface of the cam plate, and a circular hole is provided at the center of the connecting plate; The lower limit semi-ring is installed on the top surface of the connecting plate; An upper limit half-ring is installed on the bottom surface of the blind plate, and the upper limit half-ring and the lower limit half-ring are arranged in a circle.
5. A novel self-locking tee according to claim 2, characterized in that, Also includes: A metal spiral wound gasket is installed between the tee flange and the blind flange.
6. A novel self-locking tee according to claim 2, characterized in that, Also includes: The lifting lug is installed on the top surface of the blind plate.
7. A novel self-locking tee according to claim 1, characterized in that, Also includes: The connector is welded to the tee flange. The upper protective plate is welded to the connecting pipe; The lower protective plate is welded to the upper protective plate, and the lower protective plate and the upper protective plate together surround the pipe.
8. A novel self-locking tee according to claim 7, characterized in that, Also includes: The baffles are located at the two weld seams of the upper and lower protective plates, respectively, and both abut against the outer wall of the pipe.
9. A novel self-locking tee according to any one of claims 1 to 8, characterized in that, Also includes: A round tube is installed on the bottom surface of the plug handle.
10. A novel self-locking tee according to any one of claims 1 to 8, characterized in that, Also includes: A sealing ring is installed between the outer side of the plug handle and the inner side of the tee flange.