Flexible connecting device for pipelines in shock insulation layer
By combining the design of spherical joints and flexible connection mechanisms, the problems of fracture and stress concentration in the pipeline system within the seismic isolation layer under multi-directional displacement and vibration are solved, realizing the absorption of multi-directional displacement and stress dispersion, thereby improving the safety and stability of the pipeline system.
Patent Information
- Application Number
- CN202520463150.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-17
AI Technical Summary
The piping system within the seismic isolation layer is prone to breakage and leakage due to rigid connections during multi-directional displacement and vibration. Existing flexible connection structures perform poorly in complex displacement scenarios and are prone to stress concentration, leading to component damage.
It adopts a combination of ball joints and flexible connection mechanisms, including ball joints, ball heads, flanges and rubber hoses, and is designed as a multi-directional flexible connection to absorb axial, lateral and angular displacements and disperse stress.
It significantly improves the adaptability of pipeline systems under multi-directional displacement, avoids stress concentration, extends service life, reduces maintenance costs, and ensures long-term stable operation.
Smart Images

Figure CN223794845U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building seismic isolation technology, specifically a flexible connection device for pipes inside a seismic isolation layer. Background Technology
[0002] In earthquake-prone areas, seismic isolation technology is widely used in high-rise buildings, bridges, and tunnels to mitigate earthquake damage. The isolation layer, as the core component of the isolation system, effectively absorbs and disperses seismic energy, protecting the building's main structure. However, the piping system within the isolation layer also faces significant challenges during earthquakes. Because piping systems are typically rigidly connected, multidirectional displacement and vibration caused by earthquakes can lead to pipe ruptures, leaks, and even secondary disasters.
[0003] Currently, flexible connection devices for pipes within the seismic isolation layer mainly employ structures such as corrugated pipes, rubber joints, or metal hoses. Corrugated pipes and rubber joints are primarily suitable for axial and lateral displacements, but their absorption effect is poor for complex angular displacements. Furthermore, a single flexible connection structure is prone to stress concentration when subjected to multi-directional displacements, leading to component damage. Utility Model Content
[0004] The purpose of this invention is to provide a flexible connection device for pipes within a seismic isolation layer to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A flexible connection device for pipes within a seismic isolation layer, comprising:
[0007] Two spherical joints are provided, and a flexible connecting mechanism is movably provided on one side of both spherical joints in the same direction;
[0008] Both of the two flexible connection mechanisms are movably provided with a spherical joint second on the same side, and the two spherical joints are provided with a flexible connection mechanism second inside.
[0009] Preferably, the flexible connection mechanism includes a ball head, which is movably connected to a spherical joint, and a flange is provided between the ball head and the outside of the spherical joint.
[0010] Preferably, a flange five is integrally formed at the end of the spherical joint away from the ball head;
[0011] Preferably, the flexible connection mechanism two includes a movable groove, and the two ball joints two are provided with movable grooves at the same direction end. A ball head two is movably disposed inside the movable groove, and a flange two is provided at the same direction end of the ball head two and the ball head one.
[0012] Preferably, the flexible connection mechanism two further includes a flange three, which is provided at the end of the ball head two away from the flange two, and a rubber hose is provided between the two flange three;
[0013] Preferably, both ends of the rubber hose are provided with flange four that matches flange three.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This flexible connection device for pipelines within a seismic isolation layer, through the combined use of a ball joint one, a ball joint two, and a rubber hose, can simultaneously absorb axial, lateral, and angular displacements. This device significantly improves the adaptability of the device in complex displacement scenarios and can effectively cope with multi-directional displacements caused by earthquakes, thereby greatly improving the safety and stability of the pipeline system.
[0016] 2. This flexible connection device for pipelines within a seismic isolation layer employs multiple sets of spherical joints and flexible connection mechanisms to disperse stress in the pipeline system, preventing component damage caused by stress concentration. This device significantly reduces the load on critical components, extends the service life of the device, and reduces maintenance and replacement costs, providing a reliable guarantee for the long-term stable operation of the pipeline system. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall main structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the second structure of the ball joint of this utility model;
[0019] Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle;
[0020] Figure 4 For the present utility model Figure 2 Enlarged diagram of point B in the middle.
[0021] In the diagram: 1. Ball joint one; 2. Ball joint two; 3. Ball head one; 4. Flange one; 5. Flange five; 6. Movable groove; 7. Ball head two; 8. Flange two; 9. Flange three; 10. Rubber hose; 11. Flange four. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] like Figure 1-4 As shown, this utility model provides a technical solution:
[0024] A flexible connection device for pipes within a seismic isolation layer includes two spherical joints 1. A flexible connection mechanism 1 is movably disposed on one side of each of the two spherical joints 1, each flexible connection mechanism 1 including a ball head 3 movably connected to the spherical joint 1. A flange 4 is disposed between the ball head 3 and the outside of the spherical joint 1. A flange 5 is integrally formed at the end of the spherical joint 1 away from the ball head 3. Two spherical joints 2 are movably disposed on one side of each of the two flexible connection mechanisms 1. The interiors of the two spherical joints 2... The system is equipped with a second flexible connection mechanism, which includes a movable groove 6. The movable groove 6 is provided inside the same-direction end of the two ball joints 2. A ball head 7 is movably arranged inside the movable groove 6. A flange 8 is provided at the same-direction end of the ball head 7 and the ball head 3. The system also includes a third flange 9. A third flange 9 is provided at the end of the ball head 7 away from the second flange 8. A rubber hose 10 is provided between the two third flanges 9. Both ends of the rubber hose 10 are provided with a fourth flange 11 that matches the third flange 9.
[0025] In this embodiment, the combined use of ball joint 1, ball joint 2 and rubber hose 10 can simultaneously absorb axial, lateral and angular displacements. This device significantly improves the adaptability of the device in complex displacement scenarios and can effectively cope with multi-directional displacements caused by earthquakes, thereby greatly improving the safety and stability of the pipeline system.
[0026] Furthermore, the combined action of multiple sets of spherical joints and flexible connection mechanisms can disperse the stress in the pipeline system, avoiding component damage caused by stress concentration. This device significantly reduces the load on key components, extends the service life of the device, and reduces maintenance and replacement costs, providing a reliable guarantee for the long-term stable operation of the pipeline system.
[0027] Working Principle: When an earthquake or other vibration occurs, the piping system within the seismic isolation layer will experience multi-directional displacement and vibration. At this time, the flexible connection device comes into play. First, the piping system is fixedly connected to ball joint 1 via flange 5. Ball joint 1 is movably connected to ball joint 2 via ball head 3. Ball head 3 can rotate freely within ball joint 1, absorbing lateral and angular displacement. Simultaneously, ball head 7 is located in the movable groove 6 inside ball joint 2, allowing it to move freely within the groove and further absorbing lateral displacement. Furthermore, the rubber hose 10 absorbs axial displacement through its elastic properties and ensures a tight seal with ball joint 2 via flanges 9 and 11. Flanges 4 and 8 act as limiting devices, preventing excessive displacement of ball heads 3 and 7, ensuring the device operates within a safe range. The combined action of multiple ball joints and flexible connection mechanisms disperses stress in the piping system, preventing damage to individual components due to excessive load, thereby ensuring the stability and safety of the piping system under complex displacement and vibration environments.
[0028] 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 flexible connection device for a pipe within an isolation layer, characterized by: Comprising Two spherical joints one (1), the same side of two said spherical joints one (1) is movably provided with flexible connection mechanism one; The same side of two said flexible connection mechanism one is movably provided with spherical joint two (2), the inside of two said spherical joint two (2) is provided with flexible connection mechanism two.
2. A flexible connection device for a pipe in an isolation layer according to claim 1, characterized in that: Said flexible connection mechanism one includes ball head one (3), said ball head one (3) is movably connected with spherical joint one (1), flange one (4) is arranged between the outside of said ball head one (3) and spherical joint one (1).
3. A flexible connection for a pipe in an isolation layer according to claim 2, characterized in that: Said spherical joint one (1) is integrally formed with flange five (5) at the end away from ball head one (3).
4. A flexible connection device for a pipe in an isolation layer according to claim 3, characterized in that: Said flexible connection mechanism two includes movable slot (6), the inside of the same end of two said spherical joint two (2) is provided with movable slot (6), ball head two (7) is movably arranged in the inside of said movable slot (6), flange two (8) is arranged at the same end of said ball head two (7) and ball head one (3).
5. A flexible connection for a pipe in an isolation layer according to claim 4, characterized in that: Said flexible connection mechanism two also includes flange three (9), flange three (9) is arranged at the end of said ball head two (7) away from flange two (8), rubber hose (10) is arranged between two said flange three (9).
6. A flexible connection for a pipe in an isolation layer according to claim 5, characterized in that: The two ends of said rubber hose (10) are provided with flange four (11) matched with flange three (9).