Pipeline energy absorption flexible hanging bracket device with vibration protection function

Abstract

The invention discloses a pipeline energy absorption flexible hanging bracket device with a vibration protection function. The pipeline energy absorption flexible hanging bracket device comprises a vibration protector shell and a vibration protection pull rod. A vibration protector cover plate is arranged above the vibration protector shell, a vibration energy absorption sleeve is arranged in the vibration protector shell, a center channel is formed in the vibration energy absorption sleeve in the axial direction, the middle of the center channel is of a frustum structure, the upper end of the vibration protection pull rod is inserted into the center channel from bottom to top, and the lower end of the vibration protection pull rod is inserted into the vibration protector shell. The upper end of the vibration protection pull rod is provided with a limiting block, the limiting block is located at the position of the frustum structure and is limited through the frustum structure, the length of the frustum structure is larger than that of the limiting block, and the device has the advantages that the allowable amplitude range of a lifting point is large, and the supporting force is constant within the allowable amplitude range of the device.

Description

Technical Field

[0001] The invention relates to a pipeline hanger device, in particular to a pipeline energy-absorbing flexible hanger device with vibration protection. Background Art

[0002] Under special circumstances such as earthquakes, typhoons, and water hammer, abnormal vibration of high-temperature and high-pressure pipelines will bring a series of safety hazards. Strong vibration may cause the pipeline bracket to loosen or break, which in turn causes the pipeline to shift or deform, and even cause the pipeline to break in severe cases. Pipeline rupture and equipment damage will not only affect production operations, but may also cause serious accidents such as fires and explosions, posing a major threat to personal safety and the environment. At present, damping devices are usually used to control abnormal vibration of pipelines, but traditional dampers have complex structures, high prices, and high maintenance costs. When abnormal vibration occurs, traditional dampers produce a locking effect to effectively protect pipelines or equipment. When locked, the damper has a large stiffness, which may cause additional stress on the pipeline while limiting pipeline vibration. These stresses may aggravate pipeline fatigue damage and shorten the service life of the pipeline.

[0003] The prior art discloses a patent number CN113007447B, and the patent name is a nuclear power pipeline vibration reduction hanger, including a pipe clamp and a pipe hanger, the pipe hanger includes a sealing shell, a metal guide rod and a hollow tube, one end of the sealing shell is provided with a hollow tube, one end of the metal guide rod passes through the sealing shell and is connected to the pipe clamp, the other end of the metal guide rod extends into the hollow tube, the metal guide rod is fixedly connected with a slider, a metal rubber block is provided in the sealing shell, and the metal rubber block encloses the slider. The present application takes into account that the vibration of the pipeline will be transmitted to the foundation through the pipeline hanger, therefore, a pipe clamp is provided, and the vibration load generated by the pipeline is transmitted to the pipeline hanger through the pipe clamp, and the pipeline hanger is subjected to the system load and the vibration reduction and noise reduction design is performed on the pipeline hanger, and the vibration reduction and noise reduction effect is improved through the improvement of the structure and the reasonable cooperation with the metal rubber block. In the actual manufacturing process, the size of the metal rubber block should be slightly larger than the internal space size of the sealing shell, so that after the assembly is completed, the metal rubber will produce a certain amount of compression, and then produce a certain preload. Only when the preload exists can the hanger effectively carry the pipe; at the same time, due to the material properties of the metal rubber material itself, when there is a certain preload, the material properties can be better exerted, such as greater damping and energy loss, which is beneficial for the vibration isolation of the pipe hanger. By setting a sealing shell on the pipe hanger, setting a metal rubber block in the sealing shell, a metal guide rod passes through the sealing shell and is slidably connected to the hollow pipe, and then a slider is set on the metal guide rod, the slider is located in the inner concave part of the metal rubber block, so that the load generated on the pipe is transmitted to the metal guide rod through the pipe clamp, and the metal rubber block is used for vibration reduction. The sliding of the metal guide rod in the hollow pipe can cooperate with the metal rubber block to further reduce vibration, but this application cannot be suitable for severe vibration conditions.

[0004] Therefore, it is necessary to design an energy absorption device that is suitable for severe vibration conditions, that is, it has the characteristics of a large allowable amplitude range of the suspension point and a constant supporting force within the allowable amplitude range of the device. Since thin-walled metal tubes have high specific energy absorption capacity and controllable failure modes under axial pressure, they are widely used in rail transportation, automobiles, aerospace and other fields as buffer energy absorption devices. Compared with improving structural strength or using high-performance materials, it has more safety and economic value, and can be replaced in time after damage without affecting other parts and safety. It is an ideal design scheme for energy absorption protection devices suitable for extreme vibration damage conditions, but the prior art does not provide similar disclosures. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a pipeline energy-absorbing flexible hanger device with vibration protection, which has the characteristics of a large allowable amplitude range of the hanging point and a constant supporting force within the allowable amplitude range of the device.

[0006] To achieve the above object, the present invention discloses a pipeline energy-absorbing flexible hanger device with vibration protection, comprising a vibration protector housing and a vibration protection pull rod;

[0007] A vibration protector cover is provided above the vibration protector shell, and a vibration energy-absorbing sleeve is provided in the vibration protector shell. A central channel is axially provided on the vibration energy-absorbing sleeve, and the middle part of the central channel is a frustum structure. The upper end of the vibration protection rod is inserted into the central channel from bottom to top, and a limiting block is provided at the upper end of the vibration protection rod. The limiting block is located at the position of the frustum structure and is limited by the frustum structure. The length of the frustum structure is greater than the length of the limiting block.

[0008] Furthermore, a pipe clamp hoop is provided at the lower end of the vibration protection pull rod.

[0009] Furthermore, the lower end of the vibration protection pull rod is connected to the pipe clamp hoop through the pipe clamp pull rod.

[0010] Furthermore, the vibration protection rod is marked with scales.

[0011] Furthermore, the lower end of the vibration protection rod is connected to the pipe clamp rod through a first connecting bolt.

[0012] Furthermore, it also includes a pipe clamp hoop, the end of the pipe clamp pull rod is connected to one side of the pipe clamp hoop through a second connecting bolt, and a third connecting bolt is arranged on the other side of the pipe clamp hoop.

[0013] Furthermore, a biaxial suspension plate is provided on the upper surface of the vibration protector cover plate.

[0014] Furthermore, a hole is opened on the top of the vibration protector cover, and the vibration protector cover is connected to the vibration protector housing through a fourth connecting bolt.

[0015] Furthermore, the strength of the vibration protection rod is greater than the strength of the vibration energy absorbing sleeve.

[0016] The invention discloses a pipeline energy-absorbing flexible hanger device with vibration protection, comprising a vibration protector housing and a vibration protection pull rod;

[0017] A vibration protector cover plate is provided above the vibration protector shell, a vibration energy absorbing sleeve is provided in the vibration protector shell, a central channel is provided axially on the vibration energy absorbing sleeve, the middle part of the central channel is a frustum structure, the upper end of the vibration protection rod is inserted into the central channel from bottom to top, and a limiting block is provided at the upper end of the vibration protection rod, the limiting block is located at the position of the frustum structure, and is limited by the frustum structure, and the length of the frustum structure is greater than the length of the limiting block;

[0018] The strength of the vibration protection rod is greater than the strength of the vibration energy absorbing sleeve;

[0019] The lower end of the vibration protection pull rod is connected to the pipe clamp hoop through the pipe clamp pull rod.

[0020] The present invention has the following beneficial effects:

[0021] The pipeline energy-absorbing flexible hanger device with vibration protection described in the present invention provides support for the pipeline through the friction force generated by the vibration energy-absorbing sleeve and the vibration protection rod during specific operation. When the pipeline energy-absorbing flexible hanger device with vibration protection is subjected to a static friction force greater than that between the vibration energy-absorbing sleeve and the vibration protection rod, a relative displacement occurs between the vibration energy-absorbing sleeve and the vibration protection rod, and the pipeline energy-absorbing flexible hanger device with vibration protection maintains a constant support force. The upper end of the vibration protection rod is inserted into the central channel from bottom to top, and the length of the cone structure is greater than the length of the limit block. It has the characteristics of a large allowable amplitude range of the hanging point and a constant support force within the allowable amplitude range of the device. In addition, in the event of severe vibration at the hanging point under different working conditions, as well as extreme situations such as pipeline failure and damage, the pipeline energy-absorbing flexible hanger device with vibration protection can absorb the deformation energy of the pipeline, release the abnormal deformation energy, and better cope with the dynamic effect of pipeline rupture, avoiding damage to other structures or components caused by the local transient dynamic load caused by pipeline rupture. At the same time, during the structural deformation stage of the vibration protection pipeline energy-absorbing flexible hanger device, it can still maintain a constant working resistance and a stable deformation amount, thereby achieving pipeline stability and reducing safety hazards. In the future, it can be widely used in rail transit, automobiles, aerospace and other fields as a buffer energy-absorbing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Among them, 11 is the first connecting bolt, 12 is the second connecting bolt, 13 is the third connecting bolt, 14 is the fourth connecting bolt, 2 is the vibration protector cover, 3 is the vibration energy absorption sleeve, 4 is the vibration protector shell, 5 is the vibration protection rod, 6 is the pipe clamp rod, and 7 is the pipe clamp clamp. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0027] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0028] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0029] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0030] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0033] As is known, the vibration energy absorbing sleeve is a specially designed sleeve, whose main function is to effectively absorb and disperse energy when subjected to vibration or external force, thereby protecting the pipeline system and its connecting parts from damage. The following is a detailed analysis of the vibration energy absorbing sleeve. The working principle is energy absorption: when the pipeline system is subjected to vibration or external force, the vibration energy absorbing sleeve can first respond and deform. This deformation process is actually an energy absorption process. The sleeve converts the energy generated by vibration or external force into other forms of energy (such as heat energy, sound energy, etc.) through its own deformation, thereby reducing the impact on the pipeline system and its connecting parts. Dispersion and transmission: The absorbed energy will be dispersed inside the sleeve to avoid damage caused by excessive local concentration of energy. At the same time, part of the energy will also be transmitted to the entire pipeline system through the interaction between the sleeve and the surrounding structure, further reducing local stress and damage risks. Vibration energy absorbing sleeves are widely used in pipeline systems that require high stability and safety, such as petroleum, chemical, electric power, nuclear power and other fields. In these fields, the pipeline system often carries high pressure, high temperature or toxic and harmful media. Once leakage or damage occurs, the consequences will be very serious. Therefore, the use of vibration energy absorbing sleeves can effectively improve the safety and reliability of the pipeline system.

[0034] Embodiment 1

[0035] refer to Figure 1The pipeline energy-absorbing flexible hanger device with vibration protection described in the present invention includes a vibration protector shell 4 and a vibration protection rod 5; a vibration protector cover plate 2 is provided above the vibration protector shell 4, and a vibration energy-absorbing sleeve 3 is provided in the vibration protector shell 4, and a central channel is axially arranged on the vibration energy-absorbing sleeve 3, and the middle part of the central channel is a frustum structure, and the upper end of the vibration protection rod 5 is inserted into the central channel from bottom to top, and a limiting block is provided at the upper end of the vibration protection rod 5, and the limiting block is located at the position of the frustum structure and is limited by the frustum structure, and the length of the frustum structure is greater than the length of the limiting block; the strength of the vibration protection rod 5 is greater than the strength of the vibration energy-absorbing sleeve 3; the lower end of the vibration protection rod 5 is connected to the pipe clamp hoop 7 through the pipe clamp rod 6.

[0036] During operation, when there is a downward force on the vibration protection rod 5, a limit block is arranged on the upper end of the vibration protection rod 5 to move within the frustum structure. At the same time, friction energy is consumed between the vibration protection rod 5 and the vibration energy absorbing sleeve 3, so that the pipeline deformation energy can be absorbed by the vibration protection pipeline energy absorbing flexible hanger device, which is extremely practical.

[0037] Embodiment 2

[0038] refer to Figure 1 To improve the first embodiment, the present embodiment discloses a pipeline energy absorbing flexible hanger device with vibration protection. Specifically, the pipeline energy absorbing flexible hanger device with vibration protection includes a first connecting bolt 11, a second connecting bolt 12, a third connecting bolt 13, a fourth connecting bolt 14, a vibration protector cover plate 2, a vibration energy absorbing sleeve 3, a vibration protector shell 4, a vibration protection rod 5, a pipe clamp rod 6 and a pipe clamp hoop 7;

[0039] A vibration protector cover plate 2 is provided above the vibration protector housing 4, and a vibration energy absorbing sleeve 3 is provided in the vibration protector housing 4. A central channel is provided in the axial direction on the vibration energy absorbing sleeve 3, and the middle part of the central channel is a frustum structure. The upper end of the vibration protection rod 5 is inserted into the central channel from bottom to top, and a limit block is provided at the upper end of the vibration protection rod 5, and the limit block is located at the position of the frustum structure and is limited by the frustum structure. At the same time, the length of the frustum structure is greater than the length of the limit block, so that the vibration protection rod 5 can move freely up and down in a certain direction within the permissible vibration range without providing a restraining effect. The strength of the vibration protection rod 5 is greater than the strength of the vibration energy absorbing sleeve 3, so that when the limit block on the vibration protection rod 5 moves in the vibration energy absorbing sleeve 3, the shape of the limit block remains unchanged, and the vibration energy absorbing sleeve 3 undergoes elastic-plastic deformation. For example, the vibration protection rod 5 can be made of No. 45 carbon steel, and the vibration energy absorbing sleeve 3 can be made of No. 20 carbon steel.

[0040] As an embodiment of the present invention, a double-axis hanging plate is provided on the upper surface of the vibration protector cover plate 2 , and a hole is opened at the top of the vibration protector cover plate 2 , which is connected to the vibration protector housing 4 via a fourth connecting bolt 14 .

[0041] As an embodiment of the present invention, the vibration protection rod 5 is marked with a scale for measuring the relative displacement between the vibration protection rod 5 and the vibration protector housing 4 .

[0042] As an embodiment of the present invention, the lower end of the vibration protection rod 5 is connected to the pipe clamp rod 6 through a first connecting bolt 11 .

[0043] As an embodiment of the present invention, the end of the pipe clamp tie rod 6 is connected to one side of the pipe clamp hoop 7 through a second connecting bolt 12 , and a third connecting bolt 13 is provided on the other side of the pipe clamp hoop 7 .

[0044] As an embodiment of the present invention, the principle of the present invention is:

[0045] For an undamped system, the frequency equation is:

[0046] |K-ω 2 ·M|=0 (1)

[0047] Among them, K is the stiffness matrix, M is the mass matrix, and ω is the natural frequency of each order. It can be seen from formula (1) that the natural frequency of the pipeline multi-degree-of-freedom system is related to the mass and stiffness matrix. Under the premise of unchanged mass, the stiffness of the pipeline system can be increased through the reasonable arrangement of constraints, so that it has a higher first-order natural frequency, thereby reducing pipeline vibration.

[0048] The supporting load of the vibration-protected pipeline energy-absorbing flexible hanger device is:

[0049] F N sinθ+fF N cosθ=F (2)

[0050] Among them, F N is the normal contact force between the limit block and the inner wall of the vibration energy absorbing sleeve 3, θ is the angle between the generatrix of the limit block and the normal line, f is the friction coefficient between the vibration protection rod 5 and the inner wall of the vibration energy absorbing sleeve 3, and F is the support load.

[0051] Assume that the total radial deformation of the vibration protection rod 5 and the vibration energy absorbing sleeve 3 is constant at Δd, and the vibration energy absorbing sleeve 3 and the vibration protection rod 5 only undergo elastic deformation during the service of the hanger, that is:

[0052]

[0053] F N =∫∫σN dA (4)

[0054] Among them, E 1 is the elastic modulus of the vibration energy absorbing sleeve 3, E 2 is the elastic modulus of the vibration protection rod 5, D is the outer diameter of the vibration energy absorbing sleeve 3, σ N is the normal stress at a certain point in the contact area between the vibration energy absorbing sleeve 3 and the vibration protection rod 5, A is the contact area between the vibration energy absorbing sleeve 3 and the vibration protection rod 5, wherein Δd is a function of the generatrix of the frustum along the axial direction of the vibration protection rod 5.

[0055] Combining equations (2), (3) and (4), it can be seen that the supporting force can be controlled by adjusting the material parameters of the vibration energy absorbing sleeve 3 and the vibration protection rod 5, as well as adjusting the geometric configuration of the limit block. Among them, the angle between the generatrix and the normal of the limit block should not be too large, so as to avoid stress concentration in the vibration energy absorbing sleeve 3 and cause failure.

[0056] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0057] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A pipeline energy-absorbing flexible hanger device with vibration protection, characterized in that: It comprises a vibration protector housing (4) and a vibration protection pull rod (5); A vibration protector cover plate (2) is provided above the vibration protector shell (4), and a vibration energy absorbing sleeve (3) is provided inside the vibration protector shell (4). A central channel is axially provided on the vibration energy absorbing sleeve (3), and the middle part of the central channel is a frustum structure. The upper end of the vibration protection rod (5) is inserted into the central channel from bottom to top, and a limiting block is provided at the upper end of the vibration protection rod (5). The limiting block is located at the position of the frustum structure and is limited by the frustum structure. The length of the frustum structure is greater than the length of the limiting block.

2. The pipeline energy-absorbing flexible hanger device with vibration protection according to claim 1 is characterized in that: The lower end of the vibration protection pull rod (5) is provided with a pipe clamp hoop (7).

3. The pipeline energy-absorbing flexible hanger device with vibration protection according to claim 2 is characterized in that: The lower end of the vibration protection pull rod (5) is connected to the pipe clamp hoop (7) via the pipe clamp pull rod (6).

4. The pipeline energy-absorbing flexible hanger device with vibration protection according to claim 1 is characterized in that: The vibration protection rod (5) is marked with scale.

5. The pipeline energy-absorbing flexible hanger device with vibration protection according to claim 3 is characterized in that: The lower end of the vibration protection rod (5) is connected to the pipe clamp rod (6) via a first connecting bolt (11).

6. The pipeline energy-absorbing flexible hanger device with vibration protection according to claim 5 is characterized in that: It also comprises a pipe clamp hoop (7), the end of the pipe clamp pull rod (6) is connected to one side of the pipe clamp hoop (7) via a second connecting bolt (12), and a third connecting bolt (13) is arranged on the other side of the pipe clamp hoop (7).

7. The pipeline energy-absorbing flexible hanger device with vibration protection according to claim 1 is characterized in that: A double-axis hanging plate is arranged on the upper surface of the vibration protector cover plate (2).

8. The pipeline energy-absorbing flexible hanger device with vibration protection according to claim 1 is characterized in that: A hole is opened at the top of the vibration protector cover plate (2), and the vibration protector cover plate (2) is connected to the vibration protector housing (4) via a fourth connecting bolt (14).

9. The pipeline energy-absorbing flexible hanger device with vibration protection according to claim 1, characterized in that: The strength of the vibration protection rod (5) is greater than the strength of the vibration energy absorbing sleeve (3).

10. A pipeline energy-absorbing flexible hanger device with vibration protection, characterized in that: It comprises a vibration protector housing (4) and a vibration protection pull rod (5); A vibration protector cover plate (2) is provided above the vibration protector shell (4), a vibration energy absorbing sleeve (3) is provided inside the vibration protector shell (4), a central channel is provided axially on the vibration energy absorbing sleeve (3), the middle part of the central channel is a frustum structure, the upper end of the vibration protection rod (5) is inserted into the central channel from bottom to top, and a limiting block is provided at the upper end of the vibration protection rod (5), the limiting block is located at the position of the frustum structure, and is limited by the frustum structure, and the length of the frustum structure is greater than the length of the limiting block; The strength of the vibration protection rod (5) is greater than the strength of the vibration energy absorbing sleeve (3); The lower end of the vibration protection pull rod (5) is connected to the pipe clamp hoop (7) via the pipe clamp pull rod (6).

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