Pipe fitting connecting structure

Abstract

The utility model provides a pipe fitting connecting structure, which belongs to the technical field of connecting structures, and comprises two arc-shaped connecting frames which are oppositely arranged, each arc-shaped connecting frame is composed of two arc-shaped sections which can be spliced, and the two arc-shaped connecting frames are encircled to form an annular space for accommodating the end part of a pipe fitting; wherein the two ends of one arc-shaped connecting frame are rotationally connected with the corresponding ends of the other arc-shaped connecting frame through rotating shafts correspondingly, the splicing position of the two arc-shaped connecting frames is fastened through locking bolts, and a plurality of positioning grooves are evenly distributed in the inner surfaces of the arc-shaped connecting frames; the arc-shaped connecting frames are provided with positioning grooves, connecting units are arranged between the corresponding positioning grooves, each arc-shaped connecting frame is provided with a fastening assembly, the fastening assemblies are matched with the connecting units to achieve fixation of the connecting units, universality is improved through the arc-shaped sections capable of being spliced, sealing is strengthened, and use safety is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of connection structure technology, and more specifically, relates to a pipe fitting connection structure. Background Technology

[0002] In many fields such as modern industry, construction, and energy, pipe connection is a crucial technical aspect. The main function of pipe connection structures is to tightly, securely, and reliably connect different pipes to construct a complete piping system, thereby enabling the transportation, distribution, and pressure transmission of fluids (liquids or gases). For example, in the petrochemical industry, large quantities of various chemicals need to be transported and processed through complex pipeline networks; in building water supply and drainage systems, water pipe connections must ensure smooth water flow and prevent leaks; in heating and cooling systems, the quality of pipe connections directly affects the efficiency of heat or cold energy transfer and the operational stability of the system.

[0003] Chinese utility model patent CN222095219U (application number CN202422646308.5) discloses a pipe connection structure. Two sets of arc-shaped plates form a ring. One end of the two sets of arc-shaped plates is rotatably connected by a rotating component, and the other end is fixedly connected by bolts. Each arc-shaped plate has several equidistant limiting components. A connecting component is provided between corresponding limiting components on two arc-shaped plates in each set. Each arc-shaped plate in each set has a locking component, and each locking component has a fixing component. The locking components lock the fixing components, and the fixing components correspond one-to-one with the connecting components, fixing the corresponding connecting components. This utility model allows for the individual release of a connecting component without needing to weld the pipe across the connecting component, eliminating the problem of connecting components hindering pipe welding, ensuring welding quality, and is easy to operate.

[0004] The aforementioned structure primarily focuses on pipe butt connections and the fixing methods of connecting components, with relatively weak design in terms of sealing performance. Due to its specific structural design, this butt connection structure has poor adaptability when connecting pipes of different diameters. When the butt connection structure malfunctions or requires maintenance during use, the disassembly and reinstallation process is quite cumbersome due to its complex component structure. Utility Model Content

[0005] In view of this, the present invention provides a pipe fitting connection structure that strengthens the sealing design of the traditional structure, makes up for the lack of sealing performance, and improves versatility.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a pipe fitting connection structure, which includes two opposing arc-shaped connecting frames. Each arc-shaped connecting frame is composed of two splicable arc-shaped segments. The two arc-shaped connecting frames together form an annular space for accommodating the end of the pipe fitting. The two ends of one arc-shaped connecting frame are rotatably connected to the corresponding ends of the other arc-shaped connecting frame via rotating shafts. The splice of the two arc-shaped connecting frames is fastened with locking bolts. The inner surface of the arc-shaped connecting frame has a plurality of positioning grooves evenly distributed. A connecting unit is provided between the corresponding positioning grooves. Each arc-shaped connecting frame is provided with a fastening component. The fastening component cooperates with the connecting unit to fix the connecting unit.

[0008] The technical advantages of the pipe fitting connection structure provided by this utility model are as follows: The arc-shaped connecting frame is composed of two arc-shaped segments, which facilitates assembly and adjustment for pipe fittings of different diameters, improving the versatility of the connection structure. The rotatable connection design makes it easy to adjust the relative position of the two arc-shaped connecting frames during installation, making the connection process more convenient and efficient. Through the cooperation of the positioning groove, connecting unit, and fastening components, the stability and reliability of the pipe fitting connection can be ensured, effectively preventing the pipe fitting from loosening or shifting at the connection point.

[0009] The arc-shaped connector is semi-circular in shape. Each arc-shaped connector consists of two interlocking arc-shaped segments. The two opposing arc-shaped connectors can be combined to form an annular space to accommodate the end of the pipe fitting. This shape design facilitates installation at the end of the pipe fitting, and the splicing method can accommodate pipe fittings of different diameters. During installation, the rotatable connection method (connected via a rotating shaft) also allows the arc-shaped connector to be better fixed around the pipe fitting, improving the flexibility and versatility of the connection structure.

[0010] Based on the above technical solution, the pipe fitting connection structure of this utility model can be further improved as follows:

[0011] The positioning groove is provided with an elastic buffer pad.

[0012] Furthermore, each of the connecting units includes a connecting strip, a fixing groove, two connecting ears, and two fastening screws. The two ends of the connecting strip are respectively placed in the corresponding positioning grooves and in close contact with the elastic buffer pad. The fixing groove is opened along the length of the connecting strip and passes through the connecting strip. The two connecting ears are symmetrically installed at both ends of the connecting strip. The two fastening screws pass through the corresponding connecting ears and are threadedly connected to them.

[0013] Furthermore, anti-slip caps are provided at both ends of the rotating shaft.

[0014] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the anti-detachment cap enhances the safety of the connection structure. During equipment operation, even under significant external impact or vibration, the arc-shaped connecting bracket can be effectively prevented from detaching from the rotating shaft, ensuring the integrity and stability of the entire pipe connection system, reducing the risk of safety accidents and equipment damage due to connection structure failure, and lowering maintenance costs and downtime.

[0015] Furthermore, each of the fastening components includes a fastening block, an adjusting groove, a locking hole, and a locking pin. The fastening block is fixed on the arc-shaped connecting frame. The adjusting groove is opened inside the fastening block with one end open. The locking hole passes through the fastening block and communicates with the adjusting groove. The locking hole communicates with the corresponding positioning groove.

[0016] Furthermore, the connecting strip is provided with a locking protrusion that matches the locking hole. The locking protrusion is used to insert into the locking hole and fix the connecting unit by a locking pin.

[0017] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the cooperation between the locking protrusion and the locking hole simplifies the fixing method between the connecting unit and the fastening assembly, and improves the efficiency of the connection. This design allows the connecting unit to be quickly locked and fixed after installation, reducing installation time and labor intensity. At the same time, the locking structure can withstand greater tensile and shear forces, further enhancing the reliability of the connection, effectively preventing the pipe fittings from loosening or detaching at the connection point, and improving the safety and stability of the entire pipe connection system.

[0018] Furthermore, the anti-slip cap is disc-shaped, with a through hole in its center that matches the end of the rotating shaft, and the anti-slip cap is sleeved on the end of the rotating shaft through the through hole.

[0019] Furthermore, the contact surface between the connecting ear and the positioning groove is provided with anti-slip texture.

[0020] Furthermore, an annular groove is provided on the side of the rotating shaft end near the arc-shaped connecting frame, and an elastic claw is provided on the inner side wall of the anti-detachment cap corresponding to the position of the annular groove.

[0021] When the anti-slip cap is fitted onto the end of the rotating shaft, the elastic claw engages with the annular groove, thus firmly fixing the anti-slip cap to the end of the rotating shaft and effectively preventing the arc-shaped connecting frame from detaching from the rotating shaft during rotation. The outer diameter of the anti-slip cap is larger than the diameter of the hole at the connection between the rotating shaft and the arc-shaped connecting frame, further restricting the axial displacement of the arc-shaped connecting frame.

[0022] Furthermore, the elastic cushioning pad is made of rubber and has anti-slip particles on its surface.

[0023] The elastic cushioning pad is made of one-piece molded rubber, and its shape matches the positioning groove, forming an arc-shaped sheet structure. The anti-slip particles are made of rubber and are hemispherical in shape.

[0024] Compared with the prior art, the beneficial effects of the pipe fitting connection structure provided by this utility model are:

[0025] High versatility:

[0026] This utility model's pipe fitting connection structure employs two opposing arc-shaped connecting frames, each composed of two splicable arc-shaped segments. This design allows the connection structure to be flexibly adjusted according to pipe fittings of different diameters. In practical applications, simply selecting appropriate arc-shaped segments for assembly can accommodate the connection needs of various pipe diameter specifications. For example, in a factory's piping system, there may be multiple pipes of different diameters, such as 50mm, 80mm, and 100mm. Using this connection structure, there is no need to equip each pipe diameter with a specific connection device, greatly reducing inventory costs and management difficulty, and improving the versatility of the connection structure in different pipe diameter connection scenarios.

[0027] Rotatable connection design:

[0028] One of the arc-shaped connecting brackets has two ends that are rotatably connected to the corresponding ends of the other arc-shaped connecting bracket via a rotating shaft. This rotatable feature greatly facilitates the installation process for operators. When installing the connecting structure to the end of the pipe fitting, the two arc-shaped connecting brackets can first be rotated to a suitable angle around the rotating shaft, and then they can be closed around the pipe fitting, avoiding the problems of precise alignment and complex adjustments required in traditional connection methods. For example, in environments with narrow spaces and complex pipe layouts, such as underground pipe shafts or pipe connections inside equipment, the rotatable arc-shaped connecting bracket can easily adapt to the position and angle of the pipe fitting, reducing the difficulty and time of installation.

[0029] Multiple fixed structures:

[0030] The synergistic action of the positioning groove, connecting unit, and fastening components achieves multiple layers of fixation for the pipe fitting. The connecting strip makes close contact with the elastic buffer pad within the positioning groove, increasing friction and further filling the gaps through the elastic deformation of the buffer pad, resulting in a tighter connection. Simultaneously, the engagement of the locking protrusion with the locking hole and the fixing of the locking pin effectively prevent displacement or loosening of the connecting strip during use. Furthermore, the joints of the arc-shaped connecting frame are secured with locking bolts, further enhancing the stability of the entire connection structure. This multi-layered fixing structure can withstand significant tensile, compressive, and shear forces, ensuring a stable connection for the pipe fitting under various operating conditions. For example, in high-pressure pipeline systems, fluid pressure may exert enormous forces on the pipe fitting connection points, but this connection structure effectively disperses and bears these forces, preventing connection failure and leakage. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is an example diagram of a pipe fitting connection structure;

[0033] Figure 2 This is a side view of a pipe fitting connection structure;

[0034] Figure 3 This is an example diagram of a connection unit for a pipe fitting connection structure;

[0035] Figure 4 This is an example diagram of a fastening assembly for a pipe fitting connection structure;

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 10. Arc-shaped connecting frame; 11. Arc-shaped segment; 12. Positioning groove; 13. Rotating shaft; 14. Anti-detachment cap; 20. Connecting unit; 21. Connecting strip; 22. Connecting ear; 23. Fastening screw; 30. Fastening assembly; 31. Fastening block; 32. Adjustment groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0039] like Figures 1-4The diagram shows a first embodiment of a pipe fitting connection structure provided by this utility model. In this embodiment, two opposing arc-shaped connecting frames 10 are included. Each arc-shaped connecting frame 10 is composed of two splicable arc-shaped segments 11. The two arc-shaped connecting frames 10 together form an annular space for accommodating the end of the pipe fitting. The two ends of one arc-shaped connecting frame 10 are rotatably connected to the corresponding ends of the other arc-shaped connecting frame 10 through a rotating shaft 13. The splice of the two arc-shaped connecting frames 10 is fastened by locking bolts. Multiple positioning grooves 12 are evenly distributed on the inner surface of the arc-shaped connecting frame 10. A connecting unit 20 is provided between the corresponding positioning grooves 12. Each arc-shaped connecting frame 10 is provided with a fastening component 30. The fastening component 30 and the connecting unit 20 cooperate with each other to fix the connecting unit 20.

[0040] In the above technical solution, the positioning groove 12 is provided with an elastic buffer pad.

[0041] Furthermore, in the above technical solution, each connecting unit 20 includes a connecting strip 21, a fixing groove, two connecting ears 22 and two fastening screws 23. The two ends of the connecting strip 21 are respectively placed in the corresponding positioning grooves 12 and are in close contact with the elastic buffer pad. The fixing groove is opened along the length of the connecting strip 21 and passes through the connecting strip 21. The two connecting ears 22 are symmetrically installed at both ends of the connecting strip 21. The two fastening screws 23 pass through the corresponding connecting ears 22 and are threadedly connected to them.

[0042] Furthermore, in the above technical solution, anti-detachment caps 14 are respectively provided at both ends of the rotating shaft 13.

[0043] Furthermore, in the above technical solution, each fastening component 30 includes a fastening block 31, an adjusting groove 32, a locking hole, and a locking pin. The fastening block 31 is fixed on the arc-shaped connecting frame 10. The adjusting groove 32 is opened in the fastening block 31 and has one end open. The locking hole passes through the fastening block 31 and communicates with the adjusting groove 32. The locking hole communicates with the corresponding positioning groove 12.

[0044] Furthermore, in the above technical solution, the connecting strip 21 is provided with a locking protrusion that matches the locking hole. The locking protrusion is used to insert into the locking hole and fix the connecting unit 20 through the locking pin.

[0045] Furthermore, in the above technical solution, the anti-slip cap 14 is disc-shaped, with a through hole in its center that matches the end of the rotating shaft 13. The anti-slip cap 14 is sleeved on the end of the rotating shaft 13 through the through hole.

[0046] The anti-detachment caps are located at both ends of the rotating shaft, on the outer side of the arc-shaped connecting frame, that is, on the side away from the center of the arc-shaped connecting frame (where the pipe fitting is located). After the rotating shaft passes through the connecting plate fixing plate between the two arc-shaped connecting frames, rotatably connecting the two arc-shaped connecting frames, the anti-detachment caps are installed at the ends of the rotating shaft that protrude from the fixing plate. This positioning effectively prevents the arc-shaped connecting frame from detaching from the rotating shaft during rotation due to unexpected external forces (such as vibration, collision, etc.), ensuring the integrity and stability of the connection structure.

[0047] Furthermore, in the above technical solution, the contact surface between the connecting ear 22 and the positioning groove 12 is provided with anti-slip texture.

[0048] On the inner wall surface of the positioning groove, a series of equally spaced triangular grooves are machined along its circumferential direction. These triangular grooves form the anti-slip texture of the positioning groove. On the side surface of the connecting ear that contacts the positioning groove, a series of raised triangular tooth-like structures are correspondingly provided. When the connecting ear of the connecting strip is placed in the positioning groove, the triangular tooth-like structures on the connecting ear engage with the triangular grooves on the inner wall of the positioning groove, thereby effectively preventing the connecting strip from sliding along the circumferential direction within the positioning groove.

[0049] Furthermore, in the above technical solution, an annular groove is provided on the side of the end of the rotating shaft 13 near the arc-shaped connecting frame 10, and an elastic claw is provided on the inner side wall of the anti-detachment cap 14 corresponding to the position of the annular groove.

[0050] Furthermore, in the above technical solution, the elastic cushioning pad is made of rubber and has anti-slip particles on its surface.

[0051] Specifically, the principle of this utility model is as follows:

[0052] Mechanical principles:

[0053] The arc-shaped connecting frame, connecting unit, and fastening components work together to generate a clamping force on the pipe fitting. The arc-shaped connecting frame surrounds the end of the pipe fitting, and the connecting strip is in close contact with the elastic buffer pad within the positioning groove and is initially fixed by the fastening screw. At this point, the connecting strip exerts a certain pressure on the pipe fitting. When the locking protrusion is inserted into the locking hole and fixed by the locking pin, the connecting unit and fastening components form a whole, further enhancing the clamping force on the pipe fitting. This clamping force can balance the internal pressure, external tensile force, and shear force experienced by the pipe fitting during use, ensuring the stability of the pipe fitting connection. For example, in high-pressure pipelines, the pressure of the fluid on the pipe wall may attempt to cause the pipe fitting to expand outward, while the clamping force of the connecting structure can resist this expansion force and prevent the pipe fitting from detaching from the connecting structure.

[0054] The arc-shaped connecting frame, rotating shaft, and connecting units are interconnected and work together to effectively transmit and distribute the forces acting on the pipe fittings. When the pipe fittings are subjected to external forces, the force first acts on the arc-shaped connecting frame, and then is transmitted to the other arc-shaped connecting frame through the rotating shaft. Simultaneously, the connecting units also bear a portion of the force and distribute it to various connection points. For example, when a pipeline system is subjected to an earthquake or other external impact, the force will be transmitted along the pipe to the connecting structure. This connecting structure can evenly distribute the impact force to each component, avoiding localized stress concentration that could lead to component damage or connection failure.

[0055] Sealing principle:

[0056] Gaskets play a crucial sealing role at the joints of curved connectors. Gaskets are typically made of materials with good elasticity and sealing properties, such as rubber and polytetrafluoroethylene (PTFE). When the curved connector is tightened with locking bolts, the gasket is pressed between the two surfaces of the joint, undergoing elastic deformation and filling the gap. The reaction force generated by this elastic deformation ensures a tight seal between the gasket and the joint surface, preventing fluid leakage. Simultaneously, other components of the connection structure, such as the elastic buffer pads within the positioning grooves, also contribute to the sealing. The close contact between the elastic buffer pads and the pipe surface prevents fluid leakage from the gap between the pipe and the connection structure, further improving the overall sealing performance of the connection.

Claims

1. A pipe fitting connection structure, characterized in that, The device includes two opposing arc-shaped connecting frames (10), each of which consists of two splicable arc-shaped segments (11). The two arc-shaped connecting frames (10) together form an annular space for accommodating the end of the pipe fitting. The two ends of one arc-shaped connecting frame (10) are rotatably connected to the corresponding ends of the other arc-shaped connecting frame (10) via a rotating shaft (13). The splice of the two arc-shaped connecting frames (10) is fastened with locking bolts. The inner surface of the arc-shaped connecting frame (10) is evenly distributed with multiple positioning grooves (12). A connecting unit (20) is provided between the corresponding positioning grooves (12). Each arc-shaped connecting frame (10) is provided with a fastening component (30). The fastening component (30) cooperates with the connecting unit (20) to fix the connecting unit (20).

2. The pipe fitting connection structure according to claim 1, characterized in that, An elastic buffer pad is provided inside the positioning groove (12).

3. The pipe fitting connection structure according to claim 2, characterized in that, Each of the connecting units (20) includes a connecting strip (21), a fixing groove, two connecting ears (22) and two fastening screws (23). The two ends of the connecting strip (21) are respectively placed in the corresponding positioning grooves (12) and in close contact with the elastic buffer pad. The fixing groove is opened along the length of the connecting strip (21) and passes through the connecting strip (21). The two connecting ears (22) are symmetrically installed at both ends of the connecting strip (21). The two fastening screws (23) pass through the corresponding connecting ears (22) and are threadedly connected to them.

4. The pipe fitting connection structure according to claim 3, characterized in that, Anti-slip caps (14) are provided at both ends of the rotating shaft (13).

5. The pipe fitting connection structure according to claim 4, characterized in that, Each of the fastening components (30) includes a fastening block (31), an adjusting groove (32), a locking hole, and a locking pin. The fastening block (31) is fixed on the arc-shaped connecting frame (10). The adjusting groove (32) is opened in the fastening block (31) and has one end open. The locking hole passes through the fastening block (31) and communicates with the adjusting groove (32). The locking hole communicates with the corresponding positioning groove (12).

6. A pipe fitting connection structure according to claim 5, characterized in that, The connecting strip (21) is provided with a locking protrusion that is adapted to the locking hole. The locking protrusion is used to insert into the locking hole and fix the connecting unit (20) by locking pin.

7. A pipe fitting connection structure according to claim 6, characterized in that, The anti-slip cap (14) is disc-shaped, with a through hole in its center that matches the end of the rotating shaft (13). The anti-slip cap (14) is sleeved on the end of the rotating shaft (13) through the through hole.

8. A pipe fitting connection structure according to claim 7, characterized in that, The contact surface between the connecting ear (22) and the positioning groove (12) is provided with anti-slip texture.

9. A pipe fitting connection structure according to claim 8, characterized in that, An annular groove is provided on the side of the rotating shaft (13) near the arc-shaped connecting frame (10), and an elastic claw is provided on the inner side wall of the anti-detachment cap (14) corresponding to the position of the annular groove.

10. A pipe fitting connection structure according to claim 9, characterized in that, The elastic cushioning pad is made of rubber and has anti-slip particles on its surface.

Images