Damping cylinder for pipeline vibration reduction

Abstract

The damping cylinder comprises a pipe clamp connected with a pipeline and a pipe support fixedly connected with the pipe clamp, the lower portion of the pipe support is connected with a connecting plate, the periphery of the lower portion of the connecting plate is connected with a sealing sleeve, and the lower portion of the sealing sleeve is connected with a cylinder body containing damping liquid. The bottom of the connecting plate is fixedly connected with a plunger with a plurality of threaded holes in the periphery of the lower portion, the plunger is connected with a plurality of screws through the threaded holes, the ends, away from the plunger, of the screws are fixedly connected with a damping disc through nuts, and the damping disc is located below the liquid level of the damping liquid. High-temperature heat of a pipeline can be prevented from being transmitted to the connecting plate, the plunger and the damping liquid, the damping effect of the damping liquid is guaranteed, when vibration of the pipeline is transmitted to the plunger to cause vibration of the plunger, the damping disc deforms, the deformed damping disc forms reverse acting force, the reverse acting force is damping force increased to the plunger, and the damping effect of the damping liquid is guaranteed. And the damping effect of the damping cylinder can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of viscous damper technology, and in particular to a damping cylinder for pipeline vibration reduction. Background Technology

[0002] Pipeline systems are mainly used in various industrial pipelines such as water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, and hydraulic engineering. During operation, sudden changes in the velocity and temperature of the liquid within the pipeline can cause rapid increases or decreases in pressure, resulting in pipeline vibration. Due to the complexity of pipeline systems, it is difficult to eliminate vibration at its source. Prolonged pipeline vibration significantly shortens the pipeline's service life; therefore, vibration damping is necessary to ensure the safe operation of the pipeline system. Viscous dampers are general-purpose devices for pipeline vibration reduction. The principle of viscous dampers is to dissipate the vibrational kinetic energy of the pipeline through the deformation of the damping fluid, converting the vibrational kinetic energy into the heat energy of the damping fluid, reducing the adverse effects of vibration on the pipeline, and ensuring the safe operation of the pipeline system.

[0003] The damping effect of existing viscous dampers mainly comes from the viscous force of the high-viscosity damping fluid. This fluid's deformation dissipates the vibrational kinetic energy of the pipeline, thus reducing vibration. However, the viscous force of the high-viscosity damping fluid decreases with increasing temperature. When the pipeline temperature is too high, heat is transferred to the viscous damper through the pipe clamps, causing the temperature of the damping fluid inside the damper to rise. This leads to a decrease in the damping fluid's viscous force, and consequently, a reduction in the damping effect of the viscous damper. This is especially true in high-temperature environments during summer, where the viscous force of the damping fluid decreases even more significantly. The reduced viscous force further reduces the damping force, drastically diminishing the damping effect of the viscous damper. Utility Model Content

[0004] To address the technical problem in existing technologies where excessively high pipeline temperatures and high-temperature environments cause the damping fluid temperature inside the viscous damper to rise, leading to a decrease in the viscosity of the damping fluid and consequently a decrease in the damping force, thus reducing the vibration reduction effect of the viscous damper, this utility model provides the following technical solution.

[0005] This utility model discloses a damping cylinder for pipeline vibration reduction, comprising a pipe clamp connected to the pipeline and a pipe support fixedly connected to the pipe clamp. A connecting plate is connected to the lower part of the pipe support, and a sealing sleeve is connected around the lower part of the connecting plate. A cylinder containing damping fluid is connected to the lower part of the sealing sleeve. A plunger with several threaded holes on its lower outer circumference is fixedly connected to the bottom of the connecting plate. Several screws are connected to the plunger through the threaded holes. A damping disc is fixedly connected to the end of the screw away from the plunger by a nut. The damping disc is located below the liquid surface of the damping fluid.

[0006] As a further technical solution, a heat insulation pad is fixedly connected between the pipe support and the connecting plate.

[0007] As a further technical solution, the heat insulation pad is a rubber pad with micropores.

[0008] As a further technical solution, the damping disc has a bowl-shaped structure in the direction facing the cylinder.

[0009] As a further technical solution, the damping disc is evenly distributed along the outer periphery of the plunger.

[0010] As a further technical solution, the damping discs are arranged in at least one row along the axial direction of the plunger.

[0011] The beneficial effects of this utility model are as follows: A heat insulation pad is installed between the pipe support and the connecting plate. This pad hinders the downward transfer of heat, preventing the high-temperature heat from the pipe from being transferred to the connecting plate, plunger, and damping fluid, thus ensuring the vibration reduction effect of the damping fluid. A threaded hole is provided at the bottom of the plunger, and a damping disc is connected to the threaded hole via screws and nuts. The damping discs are evenly distributed around the outer circumference of the plunger and are bowl-shaped structures made of elastic material. When pipe vibration is transmitted to the plunger, causing it to vibrate, the damping disc deforms. The deformed damping disc generates a reverse force, which increases the damping force on the plunger, thereby improving the damping force of the damping cylinder and ensuring its vibration reduction effect. Attached Figure Description

[0012] Figure 1 This is a cross-sectional schematic diagram of the damping cylinder for pipeline vibration reduction according to this utility model;

[0013] Figure 2 This is a cross-sectional view along the AA direction of the damping cylinder used for pipeline vibration reduction according to this utility model;

[0014] In the diagram: 1-pipe clamp; 2-pipe support; 3-heat insulation pad; 4-sealing sleeve; 5-plunger; 6-screw; 7-damping disc; 8-nut; 9-damping fluid; 10-cylinder body; 11-connecting plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0016] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] like Figure 1 and Figure 2 As shown, the present invention discloses a damping cylinder for pipeline vibration reduction, comprising a pipe clamp 1 connected to the pipeline and a pipe support 2 fixedly connected to the pipe clamp 1. A connecting plate 11 is connected to the lower part of the pipe support 2, a plunger 5 is fixedly connected to the lower part of the connecting plate 11, a sealing sleeve 4 is connected around the lower part of the connecting plate 11, and a cylinder body 10 containing damping fluid 9 is connected to the lower part of the sealing sleeve 4, wherein the plunger 5 extends into the damping fluid 9.

[0018] In a preferred embodiment, the lower outer circumference of the plunger 5 is provided with a plurality of threaded holes. In this embodiment, there are eight threaded holes, and the plunger 5 is connected to a plurality of screws 6 through the threaded holes. The screws 6 are also eight in number. A damping disc 7 is fixedly connected to the end of the screws 6 away from the plunger 5 by a nut 8. The damping disc 7 is located below the surface of the damping fluid 9. The damping disc 7 can improve the damping force, thereby ensuring the vibration reduction effect on the pipeline. The eight threaded holes at the lower part of the plunger 5 are evenly distributed, ensuring that the damping disc 7 is evenly distributed on the outer circumference of the plunger 5, thus improving the damping force in multiple directions.

[0019] In a preferred embodiment, at least one row of damping discs 7 is arranged along the axial direction of the plunger 5. Of course, in this embodiment, there are two rows of damping discs 7, that is, a row of 8 damping discs 7 is arranged at the lower part of the plunger 5, and another row of 8 damping discs 7 is arranged above this row of damping discs 7. Both rows of damping discs 7 are located below the liquid surface of the damping fluid 9. When the viscosity and damping force of the damping fluid 9 decrease due to high temperature, the damping discs 7 can increase the damping force and ensure the vibration reduction effect of the damping cylinder on the pipeline.

[0020] In a preferred embodiment, the damping disc 7 has a bowl-shaped structure facing the cylinder 10, which makes the increase in damping force more stable. Of course, the damping disc 7 is not limited to a bowl-shaped structure; it can also be a disc-shaped, square, or plate-shaped structure, as long as it can increase the damping force.

[0021] In a preferred embodiment, a heat insulation pad 3 is fixedly connected between the pipe support 2 and the connecting plate 11. The heat insulation pad 3 is made of rubber material. To improve its heat insulation capacity, the heat insulation pad 3 can be a rubber pad with micropores, which can further insulate and dissipate heat, prevent heat from being transferred downwards, and avoid the high temperature heat of the pipe from being transferred to the damping fluid 9, thus ensuring the vibration reduction effect of the damping fluid.

[0022] The working principle of this utility model is as follows: When the pipeline vibrates, the vibration is transmitted to the plunger 5 through the pipe clamp 1, pipe support 2, heat insulation pad 3, and connecting plate 11. The vibration of the plunger 5 will exert a squeezing and shearing effect on the damping fluid 9, while the damping fluid 9 will exert the opposite damping effect on the plunger 5. At the same time, when the plunger 5 vibrates, the vibration will be transmitted to the damping disc 7 through the screw 6. When the pipeline is displaced to the right, the plunger 5 will drive the damping disc 7 to move to the right. The inner surface of the right damping disc 7 will expand, and the damping fluid 9 will generate a corresponding damping force on the right damping disc 7. At the same time, the inner surface of the left damping disc 7 will contract, and the damping fluid 9 will generate a corresponding damping force on the left damping disc 7. Therefore, adding several damping discs 7 on the outer periphery of the plunger 5 will increase the damping performance of the product and avoid the problem of reduced viscosity of the damping fluid at high temperatures. When the pipeline transports a high-temperature medium, the heat of the pipeline will be transferred to the pipe clamp 1 and the pipe support 2. When the heat is transferred downward through the pipe support 2, it will come into contact with the heat insulation pad 3. Since the heat insulation pad 3 is a heat insulation material, it will hinder the downward transfer of heat, prevent the heat of the high-temperature pipeline from being transferred to the plunger 5 and the damping fluid 9, and ensure the viscosity of the damping fluid 9 and the vibration reduction effect of the damping cylinder.

[0023] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A damping cylinder for pipeline vibration reduction, comprising a pipe clamp (1) connected to a pipeline and a pipe support (2) fixedly connected to the pipe clamp (1), wherein a connecting plate (11) is connected to the lower part of the pipe support (2), a sealing sleeve (4) is connected around the lower part of the connecting plate (11), and a cylinder body (10) containing damping fluid (9) is connected to the lower part of the sealing sleeve (4), characterized in that: The bottom of the connecting plate (11) is fixedly connected to a plunger (5) with several threaded holes on its lower outer periphery. The plunger (5) is connected to several screws (6) through the threaded holes. The end of the screw (6) away from the plunger (5) is fixedly connected to a damping disc (7) through a nut (8). The damping disc (7) is located below the liquid surface of the damping fluid (9).

2. Damper cylinder for damping of pipes according to claim 1, characterized in that: A heat insulation pad (3) is fixedly connected between the pipe support (2) and the connecting plate (11).

3. Damper cylinder for damping of pipes according to claim 2, characterized in that: The heat insulation pad (3) is a rubber pad with micropores.

4. The damping cylinder for pipeline vibration mitigation of claim 1, wherein: The damping disc (7) has a bowl-shaped structure in the direction facing the cylinder (10).

5. The damping cylinder for pipeline vibration mitigation of claim 1, wherein: The damping disc (7) is evenly distributed along the outer periphery of the plunger (5).

6. Damper cylinder for damping of pipes according to claim 5, characterized in that: The damping discs (7) are arranged in at least one row along the axial direction of the plunger (5).

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