Convenient mounting flange for pipeline system

Abstract

The utility model provides a convenient mounting flange for a pipeline system, which relates to the technical field of flange assembly and comprises an upper mounting head and a lower mounting head, the upper mounting head and the lower mounting head form an integral flange, bolt holes are formed in the top of the upper mounting head and the top of the lower mounting head, lock bolt columns penetrate through the bolt holes, and cavity openings are formed in the top of the upper mounting head and the top of the lower mounting head. The bottom of the upper mounting head and the bottom of the lower mounting head are both provided with pipe openings, the cavity openings are communicated with the pipe openings, a sleeve is arranged in the middle of the bottom end of the upper mounting head, a connecting cylinder is arranged in the middle of the top end of the lower mounting head, and the flange convenient and fast to mount has excellent universality and adaptability. Due to the unique design of the splicing backing ring and the expansion pipeline, flexible adjustment can be achieved according to different pipe diameters of external pipelines. No matter pipelines with large pipe diameters or pipelines with small pipe diameters are connected, gaps can be effectively filled and reliable sealing connection can be realized only by selecting a proper number of splicing backing rings for superposition and matching with an expandable expansion pipeline made of an expandable rubber material.

Description

Technical Field

[0001] This utility model relates to the field of flange assembly technology, and in particular to a convenient installation flange for pipeline systems. Background Technology

[0002] Flange connections are a critical component in the construction and operation of pipeline systems, and their performance directly affects the reliability, stability, and ease of installation and maintenance of the entire pipeline system.

[0003] According to Chinese Patent No. CN 216643404 U, a convenient installation flange includes a first pipe and a second pipe. Flange 1 and Flange 2 are respectively installed at the pipe ends of the first and second pipes. A connecting sleeve is installed on the inner side of Flange 1, and a connecting groove matching the connecting sleeve is opened on the inner side of Flange 2. Multiple sets of positioning bolts are installed around the periphery of Flange 2, with the bottom end of each positioning bolt inserted into the connecting sleeve. When the two pipes are connected, the connecting sleeve on the inner side of Flange 1 is inserted into the connecting groove in Flange 2, and the positioning bolts are used to reinforce the connection between the connecting sleeve and Flange 2. This replaces the traditional method of aligning threaded holes before reinforcement, improving work efficiency. When Flange 1 is connected to Flange 2, it also improves the sealing between adjacent pipes, preventing leakage during connection. It is highly practical.

[0004] While existing flange structures improve the sealing between adjacent pipes, they present the following problems in practical use: 1. Conventional flanges are often only compatible with pipes of specific diameters. Once the pipe diameter changes, a corresponding flange model must be replaced, which undoubtedly greatly increases the complexity and cost of pipeline system design, procurement, and inventory management; 2. The installation process of traditional flanges is usually cumbersome, requiring professional technicians to spend a lot of time on precise alignment and tightening. In some large-scale pipeline projects or installation scenarios with limited space, this can significantly slow down the project progress and increase construction costs. Therefore, a pipeline system with a convenient flange installation is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a convenient installation flange for pipeline systems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a convenient installation flange for a pipeline system, comprising an upper fitting head and a lower fitting head, the upper fitting head and the lower fitting head forming an integral flange, both the upper fitting head and the lower fitting head having a bolt hole at the top, a locking bolt penetrating through the bolt hole, both the upper fitting head and the lower fitting head having a cavity at the top, both the upper fitting head and the lower fitting head having a pipe opening at the bottom, the cavity and the pipe opening being interconnected, a sleeve being provided at the middle of the bottom end of the upper fitting head, and a connecting sleeve being provided at the middle of the top end of the lower fitting head.

[0007] Preferably, both the sleeve and the connecting cylinder are frustum-shaped, with the sleeve enclosing the connecting cylinder.

[0008] Preferably, both the inside of the sleeve and the outside of the connecting cylinder are provided with connecting threads, and the connecting threads inside the sleeve and outside the connecting cylinder are mutually compatible.

[0009] Preferably, the bottom outer ring portion of the lower fitting head near the connecting cylinder is provided with a groove, and a sealing ring is engaged inside the groove.

[0010] Preferably, the inner annular array of the pipe opening has an inner groove, the inner annular array of the pipe opening has a splicing pad ring, the outer annular array of the splicing pad ring has a locking block, and the inner annular array of the splicing pad ring has a slot.

[0011] Preferably, the splicing pad ring has a fabric strip layer adhered to both the front and back sides.

[0012] Preferably, the splicing pad ring has an expansion tube inside, and the outer side of the middle end of the expansion tube has an annular groove, which is interlocked with the inner ring of the splicing pad ring.

[0013] Beneficial effects

[0014] This utility model features a convenient installation flange with excellent versatility and adaptability. Its unique splicing gasket and expansion pipe design allows for flexible adjustment to accommodate different pipe diameters. Whether connecting large or small diameter pipes, simply selecting an appropriate number of splicing gaskets and stacking them, along with the expandable rubber expansion pipe, effectively fills the gaps and achieves a reliable sealing connection. This significantly reduces the cost and hassle of customizing different flange models due to pipe size variations, improving the convenience and economy of installing and maintaining the entire piping system.

[0015] In this invention, superior sealing and connection performance ensures the safe and stable operation of the pipeline system. The sealing ring forms an effective sealing surface at key connection points when the upper and lower fittings are tightened, withstanding certain unevenness and pressure fluctuations. The splicing gasket not only assists in sealing, but its PTFE or flexible graphite material also possesses good chemical stability and temperature resistance, enabling it to handle fluid transport under various complex working conditions. Furthermore, the upper and lower fittings, through precisely tolerance-controlled threaded connections and the tightening of the locking bolts, ensure the stability of the entire flange structure, enabling it to withstand axial and radial forces, effectively preventing leakage and loosening of connections. This guarantees the long-term stable operation of the pipeline system and reduces safety risks and maintenance costs caused by sealing or connection problems. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention;

[0017] Figure 2 This is a disassembly and assembly structure diagram of the present utility model;

[0018] Figure 3 This is a structural diagram of the upper assembly head of this utility model;

[0019] Figure 4 This is a structural diagram of the splicing gasket ring of this utility model;

[0020] Figure 5 This is a diagram showing the internal structure of the single splicing gasket ring of this utility model.

[0021] Legend:

[0022] 1. Upper fitting head; 2. Lower fitting head; 3. Sleeve; 4. Sealing ring; 5. Locking bolt; 6. Cavity opening; 7. Connecting sleeve; 8. Connecting thread; 9. Ring groove; 10. Bolt hole; 11. Splicing gasket; 12. Expansion pipe; 13. Pipe opening; 14. Inner groove; 15. Locking block; 16. Ring groove; 17. Fabric wrapping layer; 18. Groove. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0026] Reference Figure 1-5A convenient installation flange for a piping system includes an upper fitting head 1 and a lower fitting head 2, which together form an integral flange. Both the upper fitting head 1 and the lower fitting head 2 have bolt holes 10 at their tops, through which a locking bolt 5 passes. Both the upper fitting head 1 and the lower fitting head 2 have cavities 6 at their tops and pipe openings 13 at their bottoms. The cavities 6 and pipe openings 13 are interconnected. A sleeve 3 is located at the center of the bottom end of the upper fitting head 1, and a connecting sleeve 7 is located at the center of the top end of the lower fitting head 2. Both the sleeve 3 and the connecting sleeve 7 are frustum-shaped, with the sleeve 3 enclosing the connecting sleeve 7. Connecting threads 8 are provided inside the sleeve 3 and outside the connecting sleeve 7, and these threads are mutually compatible.

[0027] The entire flange structure consists of an upper fitting head 1 and a lower fitting head 2. During assembly, the sleeve 3 at the bottom of the upper fitting head 1 is placed on the connecting sleeve 7 at the top of the lower fitting head 2 and then tightened.

[0028] The bottom outer ring of the lower head 2 near the bottom of the connecting cylinder 7 is provided with a groove 9, and a sealing ring 4 is engaged inside the groove 9.

[0029] The inner annular array of the pipe opening 13 has an inner slot 14, and the inner annular array of the pipe opening 13 has a splicing pad ring 11. The outer annular array of the splicing pad ring 11 has a locking block 15, and the inner annular array of the splicing pad ring 11 has a slot 18.

[0030] Both the front and back of the splicing pad ring 11 are glued with a fabric ring 17. An expansion tube 12 is snapped into the inside of the splicing pad ring 11. A ring groove 16 is opened on the outside of the middle end of the expansion tube 12. The ring groove 16 and the inner ring of the splicing pad ring 11 are snapped into each other.

[0031] The splicing gasket 11 is composed of multiple sets of rings with the same structure but different diameters. After each set of rings is assembled, the rings fit together. During assembly, the locking block 15 of the set of rings is inserted into the slot 18 in the outer ring to complete the assembly. The expansion pipe 12 installed in the middle of the splicing gasket 11 is made of soft material and can be expanded according to the size of the connecting pipe. Depending on the diameter of the connecting pipe, the number of layers of splicing gaskets 11 can be selected to fill the gap between the expansion pipe 12 and the pipe opening 13, so that it can be used for various specifications of external pipes.

[0032] The splicing washer 11 can be made of polytetrafluoroethylene (PTFE) or flexible graphite. PTFE has an extremely low coefficient of friction, excellent chemical stability and temperature resistance, and can be used in a wide range of temperature and chemical media environments. The taper tolerance of sleeve 3 and connecting sleeve 7 is set to ±[taper tolerance value], the pitch tolerance of connecting thread 8 is ±[pitch tolerance value], and the thread angle tolerance is ±[thread angle tolerance value]. These tolerance controls can ensure the smoothness and reliability of the connection of sleeve 3 and connecting sleeve 7 during the tightening process, and prevent the occurrence of thread loosening or seizing.

[0033] Before installation, first check whether there are scratches, burrs or other defects on the surface of the upper head 1 and lower head 2. If so, repair or replace them. At the same time, check whether the sealing ring 4 is installed in the ring groove 9 and whether there is any offset or twisting. Check whether the locking block 15 and the slot 18 of the splicing gasket 11 are clean and free of debris. Check whether the expansion pipe 12 is intact.

[0034] Insert the expansion pipe 12 into the inside of the splicing gasket 11, ensuring that the ring groove 16 is firmly engaged with the inner ring of the splicing gasket 11. Then, according to the pipe diameter, select an appropriate number of splicing gaskets 11 for stacking and assembly. Accurately engage the locking block 15 of each ring into the slot 18 of the outer ring, so that each ring fits tightly together.

[0035] Place the assembled splicing gasket 11 and expansion pipe 12 into the predetermined position, so that the pipe opening 13 is aligned with the port of the connecting pipe. The expansion pipe 12 is made of rubber. After the expansion pipe 12 is expanded by the external pipe, the expansion pipe 12 and the pipe opening 13 are connected by the splicing gasket 11.

[0036] Align the sleeve 3 at the bottom of the upper head 1 with the connecting sleeve 7 at the top of the lower head 2, and slowly rotate the upper head 1 so that the sleeve 3 gradually fits into the connecting sleeve 7. During this process, be careful to keep the relative positions of the upper head 1 and the lower head 2 perpendicular to avoid tilting.

[0037] After the sleeve 3 and the connecting sleeve 7 are initially fitted together, the locking bolt 5 is passed through the bolt holes 10 of the upper head 1 and the lower head 2 in sequence, and tightened according to the specified torque value. Specific Implementation Example 2:

[0039] Reference Figure 1-5The flange achieves its sealing function through the coordinated action of the sealing ring 4, the splicing gasket 11, and the expansion pipe 12. The sealing ring 4 is located in the groove 9 of the lower fitting head 2. When the upper and lower fitting heads are assembled and tightened, it is compressed between the outer ring of the connecting sleeve 7 and the inner ring of the sleeve 3 to form a sealing surface, preventing fluid leakage from the connection point of the upper and lower fitting heads. Its rubber material can adapt to the condition of the connection surface and pressure fluctuations. The splicing gasket 11 fills the space between the pipe opening 13 and the expansion pipe 12. Multiple sets of rings are tightly stacked according to the locking block 15 and the slot 18, and the fabric layer 17 enhances the sealing and protection, effectively preventing fluid leakage when the expansion pipe 12 is opened by the external pipe.

[0040] The upper head 1 and the lower head 2 are fastened together by the threaded connection between the sleeve 3 and the connecting sleeve 7. The connecting threads 8 of the two are compatible with each other, and the taper, pitch and thread angle tolerances are strictly controlled to ensure smooth and reliable tightening. During assembly, the sleeve 3 is placed on the connecting sleeve 7 and rotated to tighten, and the two are combined into one to withstand axial and radial forces. The locking bolt 5 passes through the bolt hole 10 and is tightened to the specified torque to enhance the connection tightness and prevent loosening during operation.

[0041] The expansion pipe 12 is made of rubber and has good elasticity. When the external pipe is inserted into the pipe opening 13, it can expand and fit the surface according to the pipe diameter. The annular groove 16 and the inner ring of the splicing gasket 11 are engaged to maintain a stable position. Depending on the diameter of the connecting pipe, different numbers of splicing gaskets 11 are selected to fill the gap between the pipe and the pipe opening 13, thereby accommodating various specifications of external pipes, achieving convenient installation and good sealing connection, and meeting the needs of different piping systems.

[0042] In summary:

[0043] 1. In this equipment, the piping system integrates sealing rings, splicing gaskets, and expansion pipes through an innovative structural design using convenient installation flanges, achieving efficient sealing and connection functions. The splicing gasket 11 consists of multiple sets of rings with the same structure but different diameters. After each set of rings is assembled, the rings fit together. During assembly, the locking block 15 of the set of rings is inserted into the groove 18 in the outer ring to complete the assembly. The expansion pipe 12 installed in the middle of the splicing gasket 11 is made of soft material and can be expanded according to the size of the connecting pipe. Depending on the diameter of the connecting pipe, the number of layers of splicing gaskets 11 can be selected to fill the gap between the expansion pipe 12 and the pipe opening 13, thus accommodating various specifications of external pipes.

[0044] 2. From its design concept to its practical application, this flange fully considers the various needs and challenges in pipeline connections. The upper fitting head 1 and the lower fitting head 2 are fastened together by the threaded connection between the sleeve 3 and the connecting sleeve 7. The connecting threads 8 of the two are compatible with each other, and the tolerances of taper, pitch and thread angle are strictly controlled to ensure smooth and reliable tightening. During assembly, the sleeve 3 is placed on the connecting sleeve 7 and rotated to tighten, forming a whole to withstand axial and radial forces. The locking bolt 5 passes through the bolt hole 10 and is tightened to the specified torque to enhance the connection tightness and prevent loosening during operation.

[0045] The expansion pipe 12 is made of rubber and has good elasticity. When the external pipe is inserted into the pipe opening 13, it can expand and fit the surface according to the pipe diameter. The annular groove 16 and the inner ring of the splicing gasket 11 are engaged to maintain a stable position. Depending on the diameter of the connecting pipe, different numbers of splicing gaskets 11 are selected to fill the gap between the pipe and the pipe opening 13, thereby accommodating various specifications of external pipes, achieving convenient installation and good sealing connection, and meeting the needs of different piping systems.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A convenient installation flange for a piping system, comprising an upper fitting (1) and a lower fitting (2), characterized in that: The upper fitting head (1) and the lower fitting head (2) form an integral flange. The top of the upper fitting head (1) and the lower fitting head (2) are provided with bolt holes (10), and a locking bolt (5) passes through the bolt holes (10). The top of the upper fitting head (1) and the lower fitting head (2) are provided with cavities (6), and the bottom of the upper fitting head (1) and the lower fitting head (2) are provided with pipe openings (13). The cavities (6) and the pipe openings (13) are connected. A sleeve (3) is provided in the middle of the bottom end of the upper fitting head (1), and a connecting sleeve (7) is provided in the middle of the top end of the lower fitting head (2).

2. The convenient installation flange for a piping system according to claim 1, characterized in that: Both the sleeve (3) and the connecting cylinder (7) are frustum-shaped, and the sleeve (3) wraps around the connecting cylinder (7).

3. A convenient installation flange for a piping system according to claim 2, characterized in that: Both the inside of the sleeve (3) and the outside of the connecting cylinder (7) are provided with connecting threads (8), and the connecting threads (8) inside the sleeve (3) and outside the connecting cylinder (7) are compatible with each other.

4. A convenient installation flange for a piping system according to claim 3, characterized in that: The bottom outer ring of the lower head (2) near the bottom of the connecting cylinder (7) is provided with a groove (9), and a sealing ring (4) is engaged inside the groove (9).

5. A convenient installation flange for a piping system according to claim 1, characterized in that: The inner annular array of the pipe opening (13) has an inner slot (14), the inner part of the pipe opening (13) is fitted with a splicing pad ring (11), the outer annular array of the splicing pad ring (11) has a locking block (15), and the inner annular array of the splicing pad ring (11) has a slot (18).

6. A convenient installation flange for a piping system according to claim 5, characterized in that: The splicing pad ring (11) has a fabric strip (17) glued to both the front and back.

7. A convenient installation flange for a piping system according to claim 6, characterized in that: An expansion tube (12) is inserted inside the splicing pad ring (11), and an annular groove (16) is opened on the outside of the middle end of the expansion tube (12). The annular groove (16) and the inner ring of the splicing pad ring (11) are interlocked.

Images