Vibration filtering soft joint
By designing a shock filter soft joint, the inflatable ring pad is used to absorb vibration and block the vibration propagation through fixed connections, the problem of poor effect of existing soft joints in shock filtering is solved, and the effect of effectively reducing the transmission of vibration along the pipeline is achieved.
Patent Information
- Application Number
- CN202421559690.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The existing soft joints have little effect in shock filtering and cannot effectively reduce the propagation of vibration along the pipeline.
A shock filter soft joint is designed, including a flange male and flange female joints, which absorbs vibration through an inflatable ring pad and blocks vibration propagation through a fixed connection between bolts and nuts.
Effectively reduce vibration propagation along the pipeline and improve the seismic filtering performance of pipeline connections.
Smart Images
Figure CN222650840U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to a pipeline connecting piece, in particular to a shock-absorbing flexible joint. Background Art
[0002] In pipeline installation projects, the fine vibrations generated by the operation of equipment or the pipeline vibrations caused by the rapid movement of fluids in the pipeline are often continuously transmitted along the long pipeline. In some special environments, the vibrations propagated along the pipeline will be transmitted to the room through other objects in contact with it, causing low-frequency noise pollution, or causing other objects to resonate and produce disturbing noise, or causing vibration and damage to pipelines or facilities and equipment.
[0003] In response to the above problems, during the pipeline installation process, flexible joint products that act as flexible connections are often used for shock absorption. Products such as flexible rubber joints or stainless steel metal flexible joints use fabric-reinforced rubber parts or thicker-walled bellows. These materials have a certain degree of flexibility and have a good regulating effect on pipeline expansion and contraction, but have little effect on pipeline shock filtering. For example, after the internal pressure of some flexible joints is filled, they expand outward, and some areas will become very hard. The slight vibrations transmitted by the pipeline can still continue to propagate through some hardened areas. Utility Model Content
[0004] The utility model aims to overcome the vibration filtering problem of existing flexible joints and provide a vibration filtering flexible joint which can effectively reduce the vibration propagation along the pipeline.
[0005] The utility model solves the technical problem by adopting a technical solution: a shock-absorbing flexible joint, comprising a flange male joint and a flange female joint, the flange male joint and the flange female joint are composed of a flow tube and a flange plate, the flange plate is fixed at one end of the flow tube, a connecting piece is arranged at the other end of the flow tube, a ring gasket I and an inflatable ring gasket I with an air nozzle are sleeved on the flow tube of the flange female joint, the flange plate of the flange male joint is fixedly connected with the flange plate of the flange female joint by bolts and nuts, an inflatable ring gasket II with an air nozzle is arranged between the flange plate of the flange male joint and the flange plate of the flange female joint, a plurality of bolt holes are arranged on the ring gasket I, the inflatable ring gasket I and the inflatable ring gasket II, and the bolts pass through the ring gasket I, the inflatable ring gasket I and the inflatable ring gasket II.
[0006] Optionally, a conical insertion tube is provided on one side of the flange disk of the flange male joint, and the insertion tube is inserted into the flow tube of the flange female joint. A flow cavity is formed between the insertion tube and the flow tube of the flange female joint. An inflatable ring pad III connected to the inflatable ring pad II is provided on the inflatable ring pad II. The inflatable ring pad III is located in the flow cavity, and the inflatable ring pad III seals the flow cavity.
[0007] Optionally, a ring gasket II is provided on one side of the inflatable ring gasket II, a spring is provided between the ring gasket II and the flange plate of the flange male joint, a plurality of bolt holes are provided on the ring gasket II, and the bolts pass through the ring gasket II and the spring.
[0008] Optionally, a limiting ring is fixed at one end of the insertion tube, and the spacing between the limiting ring and the inner wall of the flow tube of the flange female joint is 0.2-2 cm.
[0009] The use and principle of the utility model are as follows: the connecting parts of the flange male joint and the flange female joint are connected to the pipeline, and then air is inflated into the air ring pad I and the air ring pad II through the air nozzle. The air ring pad I expands, and the vibration transmitted along the bolt is mostly absorbed by it. The air ring pad II expands, which on the one hand seals the connection, and on the other hand blocks and absorbs the vibration transmitted along the flange, thereby realizing the vibration filtering of the joint.
[0010] Compared with the prior art, the utility model has at least the following beneficial effects: the utility model can effectively reduce the propagation of vibration along the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the side cross-sectional structure of the utility model;
[0012] Figure 2 This is a front structural schematic diagram of the inflatable ring cushion I of the utility model;
[0013] Figure 3 This is a front structural schematic diagram of the inflatable ring cushion II of the utility model;
[0014] The sub-markings described in the accompanying drawings are as follows: flange male joint 1, flange female joint 2, flow tube 3, flange plate 4, connecting piece 5, ring gasket I 6, inflatable ring gasket I 7, bolt 8, nut 9, inflatable ring gasket II 10, insertion tube 11, flow chamber 12, inflatable ring gasket III 13, ring gasket II 14, spring 15, and limiting ring 16. DETAILED DESCRIPTION
[0015] Embodiment 1, below combines Figure 1 , Figure 2 and Figure 3The utility model is further described, the shock-absorbing flexible joint comprises a flange male joint 1 and a flange female joint 2, the flange male joint and the flange female joint are composed of a flow pipe 3 and a flange 4, the flange is fixed at one end of the flow pipe, and a connecting piece 5 is provided at the other end of the flow pipe, and the connecting piece can be a flange, a welding plate, etc. for pipeline connection accessories, the flow pipe of the flange female joint is sleeved with a ring gasket Ⅰ 6 and an inflatable ring gasket Ⅰ 7 with an air nozzle, the inflatable ring gasket Ⅰ is located between the ring gasket Ⅰ and the flange of the flange female joint, the ring gasket Ⅰ does not contact the flow pipe of the flange female joint, and the flange of the flange male joint is in contact with the flange of the flange female joint. The flange of the head is fixedly connected by bolts 8 and nuts 9, and an inflatable ring gasket II 10 with an air nozzle is arranged between the flange of the flange male joint and the flange of the flange female joint. A plurality of bolt holes are arranged on the ring gasket I, the inflatable ring gasket I and the inflatable ring gasket II, and the bolt holes on the ring gasket I, the inflatable ring gasket I and the inflatable ring gasket II match the holes on the flange of the flange male joint and the flange female joint, and the bolts pass through the ring gasket I, the inflatable ring gasket I and the inflatable ring gasket II, and the middle part of the inflatable ring gasket I and the inflatable ring gasket II is a flow hole with an air chamber inside, and the air chamber divides the two sides of the ring gasket so that the front and back of the ring gasket have a certain distance.
[0016] In order to improve the sealing performance, a frustum-shaped insertion tube 11 is provided on one side of the flange disk of the flange male joint. The insertion tube is connected with the flow tube of the flange male joint and are on the same axis. The insertion tube is inserted into the flow tube of the flange female joint. A flow cavity 12 is formed between the insertion tube and the flow tube of the flange female joint. An inflatable ring pad III 13 connected with the inflatable ring pad II is provided on the inflatable ring pad II. An air passage is provided between the inflatable ring pad II and the inflatable ring pad III. The air passage has a certain degree of foldability. The inflatable ring pad III is located in the flow cavity. The inflatable ring pad III seals the flow cavity. Double-layer sealing is achieved by the inflatable ring pad II and the inflatable ring pad III.
[0017] In order to improve the reliability of sealing, a ring gasket II 14 is provided on one side of the inflatable ring gasket II, a spring 15 is provided between the ring gasket II and the flange of the flange male joint, and a plurality of bolt holes are provided on the ring gasket II, and the bolts pass through the ring gasket II and the spring. When the inflatable ring gasket II or the inflatable ring gasket III leaks or the gas storage capacity decreases, the spring pushes the ring gasket II to squeeze the inflatable ring gasket II, which can achieve emergency sealing and reduce leakage; when the inflatable ring gasket II and the inflatable ring gasket III are damaged, under the action of the spring, the gas in the inflatable ring gasket II is concentrated in the inflatable ring gasket III, so that the inflatable ring gasket III can seal the flow cavity as much as possible, thereby reducing the amount of leakage and preventing the occurrence of pipe burst.
[0018] In order to prevent the displacement of the inflatable ring pad III, a limiting ring piece 16 is fixed at one end of the insertion tube. The limiting ring piece is perpendicular to the axis of the insertion tube, and the distance between the limiting ring piece and the inner wall of the flow tube of the flange female joint is 0.2-2cm.
[0019] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.
Claims
1. A shock-absorbing flexible joint, comprising a flange male joint (1) and a flange female joint (2), wherein the flange male joint and the flange female joint are composed of a flow pipe (3) and a flange plate (4), wherein the flange plate is fixed at one end of the flow pipe, and a connecting piece (5) is provided at the other end of the flow pipe, and wherein the characteristics are: A ring gasket I (6) and an inflatable ring gasket I with an air nozzle (7) are sleeved on the flow pipe of the flange female joint. The flange plate of the flange male joint and the flange plate of the flange female joint are fixedly connected by bolts (8) and nuts (9). An inflatable ring gasket II (10) with an air nozzle is arranged between the flange plate of the flange male joint and the flange plate of the flange female joint. A plurality of bolt holes are arranged on the ring gasket I, the inflatable ring gasket I and the inflatable ring gasket II. The bolts pass through the ring gasket I, the inflatable ring gasket I and the inflatable ring gasket II.
2. The shock-absorbing flexible joint according to claim 1, characterized in that: A frustum-shaped insertion tube (11) is provided on one side of the flange plate of the flange male joint, and the insertion tube is inserted into the flow tube of the flange female joint, and a flow cavity (12) is formed between the insertion tube and the flow tube of the flange female joint. An inflatable ring gasket III (13) connected to the inflatable ring gasket II is provided on the inflatable ring gasket II, and the inflatable ring gasket III is located in the flow cavity, and the inflatable ring gasket III seals the flow cavity.
3. The shock-absorbing flexible joint according to claim 2, characterized in that: A ring gasket II (14) is provided on one side of the inflatable ring gasket II, a spring (15) is provided between the ring gasket II and the flange plate of the flange male joint, and a plurality of bolt holes are provided on the ring gasket II, and the bolts pass through the ring gasket II and the spring.
4. The shock-absorbing flexible joint according to claim 2, characterized in that: A limiting ring (16) is fixed at one end of the insertion tube, and the spacing between the limiting ring and the inner wall of the flow tube of the flange female joint is 0.2-2 cm.