Vibration reduction fixing pipe clamp based on particle damping

Abstract

The utility model discloses a vibration attenuation fixing pipe clamp based on particle damping, which comprises a hoop, a base, a fixing seat and damping particles, the hoop is arranged above the fixing seat, the hoop and the fixing seat are connected with each other and can be fixed on the outer side of a pipeline in a surrounding manner, a first vibration attenuation cavity is formed in the hoop, and a second vibration attenuation cavity is formed in the base. The first vibration reduction cavity is filled with the damping particles, and the base is fixedly connected to the lower portion of the fixing base. According to the utility model, the pipeline can be restrained, the load of the pipeline can be transmitted, the vibration energy can be dissipated, the vibration of the pipeline is effectively relieved, and the stress concentration phenomenon caused by more restraint of the pipeline is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline equipment, in particular to a vibration-reducing fixed pipe clamp based on particle damping. Background Art

[0002] Fixed pipe clamps are components that transfer pipeline loads such as the weight of the pipeline, the weight of the conveyed fluid, the load and vibration caused by operating pressure and temperature difference, and the load caused by wind, earthquake, snow load, impact and displacement strain to the pipe rack structure. They are widely used in the fields of electricity, metallurgy, petroleum, and chemical industry, and have many advantages such as low price and reliable performance. However, the restraining force provided by traditional fixed pipe clamps is constant when used. If more fixed pipe clamps are set on the pipeline, it is easy to cause pipeline stress concentration, making the maximum stress value in the local area of ​​the pipeline higher than the average stress value, which can not only cause fatigue cracks in the pipeline, but also cause static load fracture of parts made of brittle materials.

[0003] At the stress concentration point, the maximum stress (peak stress) is related to factors such as the geometric shape of the object and the loading method. The locally increased stress decays rapidly as the distance from the peak stress point increases. Since the peak stress often exceeds the yield limit and causes stress redistribution, designers often constrain the pipeline by setting sliding supports or spring supports when designing pipeline systems. However, setting sliding supports or spring supports often causes greater vibration of the pipeline system.

[0004] If the vibration of the pipeline system is too large, it will not only cause pipeline fatigue, weld cracking and other problems that seriously affect the service life of the pipeline, but also affect the accuracy and reading speed of the instrument readings, affect the service life of the instrument and even damage the instrument, affect some sensitive electrical appliances and cause them to malfunction, etc. Not only does it increase safety hazards, but it is also harmful to the building structure and production personnel. Utility Model Content

[0005] The utility model aims to provide a vibration-damping fixed pipe clamp based on particle damping, which can provide the restraining force required for pipeline restraint and reduce pipeline vibration.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A vibration-damping fixed pipe clamp based on particle damping comprises a hoop, a base, a fixing seat and damping particles, wherein the hoop is arranged above the fixing seat, the hoop and the fixing seat are connected to each other and can be enclosed and fixed on the outside of the pipe, a first vibration-damping cavity is opened inside the hoop, the first vibration-damping cavity is filled with the damping particles, and the base is fixedly connected to the bottom of the fixing seat.

[0008] Furthermore, the hoop includes a hoop plate and a vibration damping box, both of which are in an inverted U shape, the vibration damping box is fixedly arranged above the hoop plate, and the bottom end surface is in contact with the hoop plate, the first vibration damping cavity is opened inside the vibration damping box, and the two ends of the hoop plate are respectively connected to the fixing seat.

[0009] Furthermore, the hoop plate and the vibration damping box are fixed by welding.

[0010] Furthermore, a connecting block is fixedly provided on the outer side of the end of the hoop plate, a screw is fixedly provided on the bottom of the connecting block, the screw is vertically provided, and a connecting through hole corresponding to the screw is vertically opened on the fixing seat.

[0011] Furthermore, the fixing seat includes an upper connecting plate, a lower connecting plate and a reinforcing partition plate, the upper connecting plate is connected to the clamp, and the top end surface is horizontally arranged, the lower connecting plate is spaced below the upper connecting plate and fixedly connected to the base, and the reinforcing partition plate is arranged between the upper connecting plate and the lower connecting plate, and fixedly connected to the upper connecting plate and the lower connecting plate.

[0012] Furthermore, a second vibration-damping cavity is provided inside the base, and the second vibration-damping cavity is filled with the damping particles.

[0013] Furthermore, the base includes a support column and a bottom plate, the top of the support column is fixedly connected to the fixing seat, the bottom is fixedly connected to the bottom plate, and the second vibration damping cavity is opened inside.

[0014] Furthermore, the base also includes at least two reinforcing rib plates, which connect the support column and the bottom plate and have a triangular longitudinal cross-section.

[0015] The utility model has the following beneficial effects:

[0016] 1. After the pipe clamp is fixedly connected to the pipe through the clamp and the fixed seat, the pipe can be constrained and the pipe load can be transferred. The clamp on the pipe clamp is filled with damping particles, which can be combined with the clamp to form a particle damper to reduce the vibration of the pipe, dissipate vibration energy, slow down the vibration of the pipe, and alleviate the stress concentration phenomenon caused by more constraints on the pipe.

[0017] 2. The pipe clamp can be installed without changing the pipeline structure, which makes it convenient to implement vibration reduction optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model (the vibration damping box is omitted).

[0019] Figure 2 It is a front view structural schematic diagram of the utility model.

[0020] Figure 3 It is a side structural schematic diagram of the utility model.

[0021] Figure 4 It is a schematic diagram of the structure of the utility model from top view.

[0022] Figure 5 This is a schematic diagram of the structure of the hoop of the utility model.

[0023] Figure 6 It is a schematic diagram of the structure of the fixing seat and the base of the utility model.

[0024] Figure 7 This is a state diagram used in the present utility model.

[0025] Explanation of the main component symbols: 1. Clamp; 11. Hoop plate; 12. Vibration damping box; 121. First vibration damping chamber; 13. Connecting block; 14. Screw; 2. Fixed seat; 21. Upper connecting plate; 211. Connecting through hole; 22. Lower connecting plate; 23. Reinforced partition; 3. Base; 31. Support column; 311. Second vibration damping chamber; 32. Bottom plate; 33. Reinforced rib plate; 4. Damping particles; 5. Nut; 6. Pipe. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figure 1-7 As shown, the utility model discloses a vibration-damping fixed pipe clamp based on particle damping, comprising a clamp 1, a base 3, a fixing base 2 and damping particles 4. The clamp 1 is arranged above the fixing base 2, the clamp 1 and the fixing base 2 are connected to each other, and can be enclosed and fixed on the outside of the pipe 6. A first vibration-damping cavity 121 is provided inside the clamp 1, and the first vibration-damping cavity 121 is filled with damping particles 4. The base 3 is fixedly connected to the bottom of the fixing base 2.

[0028] The hoop 1 includes a hoop plate 11 and a vibration damping box 12. The hoop plate 11 is in an inverted U-shape as a whole, which is convenient for buckling on the outside of the pipe 6 and closely fitting the outer side of the pipe 6. The two ends of the hoop plate 11 are respectively connected to the fixing seat 2. The vibration damping box 12 is also in an inverted U-shape as a whole, and is fixedly arranged above the hoop plate 11 by welding. The bottom end surface of the vibration damping box 12 can closely fit the hoop plate 11 to fully transmit vibration. The first vibration damping cavity 121 is opened inside the vibration damping box 12, and is filled with damping particles 4. The damping particles 4 filled in the first vibration damping cavity 121 can be combined with the vibration damping box 12 to form a particle damper. When the vibration of the pipeline 6 is transmitted from the hoop plate 11 to the vibration damping box 12, the damping particles 4 filled in the first vibration damping cavity 121 are stimulated to vibrate. The continuous friction and collision between the damping particles 4 can continuously convert the vibration mechanical energy into internal energy consumption, thereby dissipating the vibration energy, reducing the vibration amplitude, and slowing down the vibration of the pipeline 6, thereby achieving damping and vibration reduction effects, and effectively alleviating the stress concentration phenomenon of the pipeline 6 caused by more constraints.

[0029] In this embodiment, the clamp 1 and the fixing seat 2 are detachably connected so as to be installed without changing the structure of the pipe 6. The two ends of the clamp plate 11 are fixedly provided with a connection block 13, which is welded to the outer side of the clamp plate 11, and the bottom of the connection block 13 is fixedly provided with a screw 14. The fixing seat 2 is vertically provided with a connecting through hole 211 corresponding to the screw 14. The screw 14 is vertically provided and can pass through the connecting through hole 211 to connect to the fixing seat 2, and the clamp 1 and the fixing seat 2 can be locked and fixed to each other by the nut 5.

[0030] The fixing seat 2 includes an upper connecting plate 21, a lower connecting plate 22 and a reinforcing partition plate 23. The upper connecting plate 21 is used to cooperate with the clamp 1 to fix the pipe 6. The upper connecting plate 21 is provided with the above-mentioned connecting through hole 211, and the clamp 1 is fixedly connected through the connecting through hole 211. The top surface of the upper connecting plate 21 is horizontally arranged so that the fixing seat 2 and the base 3 can be installed without changing the structure of the pipe 6. The lower connecting plate 22 is arranged below the upper connecting plate 21 at intervals and is fixedly connected to the base 3. The reinforcing partition plate 23 is arranged between the upper connecting plate 21 and the lower connecting plate 22, and is fixedly connected to the upper connecting plate 21 and the lower connecting plate 22, and the connection between the upper connecting plate 21 and the lower connecting plate 22 is firm.

[0031] A second vibration damping cavity 311 is provided inside the base 3. Similar to the first vibration damping cavity 121, the second vibration damping cavity 311 is also filled with damping particles 4. The damping particles 4 filled in the base 3 can be combined with the base 3 to form a particle damper. When the vibration of the pipeline 6 is transmitted from the fixed base 2 to the base 3, the damping particles 4 filled in the base 3 will be stimulated to reduce vibration, which can also alleviate the stress concentration phenomenon caused by the large number of constraints on the pipeline 6.

[0032] The base 3 includes a support column 31 and a bottom plate 32. The bottom of the support column 31 is fixedly connected to the bottom plate 32, and the top is fixedly connected to the fixed seat 2 to support the fixed seat 2. The second vibration damping cavity 311 is provided inside. The support column 31 and the vibration damping box 12 are both provided with a shell, which can provide sufficient space for the damping particles 4. In addition, the base 3 also includes at least two reinforcing ribs 33, which are evenly distributed on the outside of the support column 31 and fixedly connected to the support column 31 and the bottom plate 32. The longitudinal cross-section of the reinforcing ribs 33 is triangular, which can make the connection between the support column 31 and the bottom plate 32 more stable.

[0033] The pipe clamp has a simple structure, is easy to install, and has low cost. When in use, the pipe 6 can be fixed by the clamp 1 and the fixing seat 2 on the pipe clamp to constrain the pipe 6, and the load of the pipe 6 can be transferred through the base 3. At the same time, the vibration energy of the pipe 6 can be dissipated, the vibration amplitude can be reduced, and the vibration condition of the pipe 6 can be improved by filling the damping particles 4 in the first vibration damping cavity 121 and the second vibration damping cavity 311. The stress concentration phenomenon of the pipe 6 caused by more constraints can be effectively alleviated on the basis of maximizing the constraints on the pipe 6.

[0034] The pipe clamp has both the energy dissipation function of a particle damper and the restraint function of a traditional pipe clamp. It was applied to an oil pipeline 6 and subjected to a vibration test. It was found that the vibration of all measuring points of the pipeline 6 was reduced by at least 40%. The vibration condition of the pipeline 6 was greatly improved, and the vibration acceleration was significantly attenuated. It can be seen that the pipe clamp has excellent vibration reduction performance.

[0035] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes in form and details of the present invention are within the scope of protection of the present invention without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A vibration-reducing fixed pipe clamp based on particle damping, characterized in that: It includes a clamp, a base, a fixing seat and damping particles. The clamp is arranged above the fixing seat. The clamp and the fixing seat are connected to each other and can be enclosed and fixed on the outside of the pipe. A first vibration damping cavity is opened inside the clamp, and the first vibration damping cavity is filled with the damping particles. The base is fixedly connected to the bottom of the fixing seat.

2. A vibration-damping fixed pipe clamp based on particle damping as claimed in claim 1, characterized in that: The hoop includes a hoop plate and a vibration damping box, both of which are in an inverted U shape. The vibration damping box is fixedly arranged above the hoop plate, and the bottom end surface is in contact with the hoop plate. The first vibration damping cavity is opened inside the vibration damping box, and the two ends of the hoop plate are respectively connected to the fixing seat.

3. A vibration-damping fixed pipe clamp based on particle damping as claimed in claim 2, characterized in that: The hoop plate and the vibration damping box are fixed by welding.

4. A vibration-damping fixed pipe clamp based on particle damping as claimed in claim 2, characterized in that: A connecting block is fixedly arranged on the outer side of the end of the hoop plate, a screw is fixedly arranged on the bottom of the connecting block, the screw is vertically arranged, and a connecting through hole corresponding to the screw is vertically opened on the fixing seat.

5. A vibration-damping fixed pipe clamp based on particle damping as claimed in claim 1 or 4, characterized in that: The fixing seat includes an upper connecting plate, a lower connecting plate and a reinforcing partition plate. The upper connecting plate is connected to the clamp and the top end surface is arranged horizontally. The lower connecting plate is arranged below the upper connecting plate and fixedly connected to the base. The reinforcing partition plate is arranged between the upper connecting plate and the lower connecting plate and fixedly connected to the upper connecting plate and the lower connecting plate.

6. The vibration-damping fixed pipe clamp based on particle damping according to claim 1, characterized in that: A second vibration-damping cavity is provided inside the base, and the second vibration-damping cavity is filled with the damping particles.

7. A vibration-damping fixed pipe clamp based on particle damping as claimed in claim 6, characterized in that: The base includes a support column and a bottom plate. The top of the support column is fixedly connected to the fixing seat, and the bottom is fixedly connected to the bottom plate. The second vibration reduction cavity is opened inside the support column.

8. The vibration-damping fixed pipe clamp based on particle damping according to claim 7, characterized in that: The base also includes at least two reinforcing rib plates, which connect the support column and the bottom plate and have a triangular longitudinal cross-section.

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