Variable load damping box

Abstract

The utility model relates to a variable load damping box which comprises a lower mounting plate, a shell arranged at the top of the lower mounting plate, damping liquid contained in the shell, an upper mounting plate arranged above the shell, an upper positioning ring arranged at the bottom of the upper mounting plate, a plunger arranged at the bottom of the upper mounting plate and a supporting body arranged in the shell. The upper end of the supporting body is arranged in the plunger in a penetrating mode, and a compression spring used for bearing loads is arranged in the supporting body. By adding the support body and the pressure spring, the product not only can support the pipeline and reduce the installation cost, but also can play a role in damping and vibration attenuation, and improves the running safety of the pipeline.

Description

Technical Field

[0001] This utility model relates to a variable load damping box, belonging to the field of vibration control technology. Background Technology

[0002] Viscous dampers are general-purpose devices used for pipeline vibration reduction. The principle of viscous dampers is based on the energy dissipation principle of high-viscosity damping fluid to reduce pipeline vibration. The plunger of the viscous damper vibrates synchronously with the pipeline. The displacement of the plunger's vibration creates multi-directional compression and shearing effects on the damping fluid, which in turn generates a damping force opposite to the direction of the plunger's vibration. After the damping fluid deforms under pressure, it converts the pipeline vibration energy into the internal energy of the damping fluid. Currently, existing viscous dampers only provide damping and vibration reduction; they do not have the ability to support the pipeline. Therefore, additional steel beams are required to support the pipeline, increasing the cost of vibration reduction and installation. Furthermore, the damping force generated by the plunger of traditional viscous dampers is limited, especially under high-temperature conditions where the damping force generated by the viscous damping fluid weakens, significantly affecting the vibration reduction effect. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a variable load damping box, which has the load-bearing capacity by adding a compression spring and a support body inside the shell, thereby reducing the cost of pipeline vibration reduction and installation. In addition, by setting a damping disc on the plunger, the damping effect of the product is increased, which makes up for the problem of the damper's damping force weakening under high temperature conditions.

[0004] The present invention discloses a variable load damping box, comprising a horizontally arranged lower mounting plate, a housing vertically arranged and connected to the lower mounting plate at its top, a damping fluid for generating damping force being contained within the housing, a lower positioning ring being inserted and connected to the housing, an upper mounting plate horizontally arranged above the housing corresponding to the lower mounting plate, an upper positioning ring vertically arranged and connected to the lower mounting plate at its bottom, a plunger vertically arranged and connected to the upper mounting plate at its bottom, the upper end of the plunger being located within the upper positioning ring, the lower end of the plunger being inserted into the housing, a dustproof sealing sleeve being fitted on the outer circumference of the lower positioning ring, the upper end of the sealing sleeve being fitted onto the upper positioning ring, and the lower end of the sealing sleeve being fitted onto the lower positioning ring, characterized in that: a support body is vertically arranged within the housing, the upper end of the support body being inserted into the plunger, and a compression spring for bearing vertical loads being provided within the support body.

[0005] In a further preferred embodiment, the plunger has several threaded holes on its outer circumference, and a damping disc for generating resistance is installed in each threaded hole by bolts.

[0006] In a further preferred embodiment, the bottom of the support body is provided with a plurality of rolling elements to facilitate its movement, and a limiting plate for positioning the rolling elements is provided at the bottom of the support body.

[0007] In a further preferred embodiment, the bottom of the upper mounting plate is provided with a positioning rod connected thereto, and the positioning rod is inserted into the compression spring.

[0008] Further preferably, a scale plate is provided on the outer surface of the housing, and a size plate is provided at the bottom of the upper mounting plate to facilitate observation of the height, corresponding to the scale plate.

[0009] Further preferably, the damping disc has a flat-bottomed, concave shape and is made of rubber material.

[0010] More preferably, the threaded holes are evenly distributed on the outer circumference of the plunger and radially distributed along the outer circumference of the plunger.

[0011] Further preferably, the rolling element is a metal sphere, and the surface of the sphere is carburized.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The variable load damping box described in this invention, by adding a compression spring and a support body inside the shell, enables the product to bear loads without the need for additional steel beams to support the pipeline, thus reducing the cost of pipeline vibration reduction and installation; the rolling element set at the bottom of the support body facilitates free sliding of the pipeline under thermal displacement conditions, avoiding the problem of secondary stress after pipeline installation and improving the safety of pipeline operation; multiple damping discs are installed on the plunger through bolted connections, increasing the contact area between the plunger and the high-viscosity damping fluid, increasing the damping force generated by the plunger during operation, and compensating for the problem of reduced damping force of the damper under high-temperature conditions. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the prior art will be briefly introduced below. Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a view of the exterior of the present utility model;

[0014] In the diagram: 1. Lower mounting plate; 2. Rolling element; 3. Limiting plate; 4. Support body; 5. Piston; 6. Threaded hole; 7. Damping disc; 8. Housing; 9. Lower positioning ring; 10. Sealing sleeve; 11. Upper positioning ring; 12. Pipe support; 13. Pipe clamp; 14. Pipe; 15. Upper mounting plate; 16. Compression spring; 17. Positioning rod; 18. Dimension plate; 19. Scale plate; 20. Damping fluid. Detailed Implementation

[0015] The present invention will be further illustrated by specific embodiments below, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0016] like Figure 1 As shown, the variable load damping box includes a horizontally arranged lower mounting plate 1. A housing 8 is vertically arranged on the top of the lower mounting plate 1 and connected thereto. A damping fluid 20 for generating damping force is installed inside the housing 8. A lower positioning ring 9 is installed inside the housing 8 and connected thereto. A higher mounting plate 15 is horizontally arranged above the housing 8 corresponding to the lower mounting plate 1. An upper positioning ring 11 is vertically arranged at the bottom of the upper mounting plate 15 and connected thereto. A plunger 5 is vertically arranged at the bottom of the upper mounting plate 15 and connected thereto. The upper end of the plunger 5 is located inside the upper positioning ring 11, and the lower end of the plunger 5 is installed inside the housing 8. A dustproof sealing sleeve 10 is fitted on the outer circle of the lower positioning ring 9. The upper end of the sealing sleeve 10 is fitted on the upper positioning ring 11, and its lower end is fitted on the lower positioning ring 9. A support body 4 is vertically arranged inside the housing 8. The upper end of the support body 4 is installed inside the plunger 5. A compression spring 16 for bearing vertical loads is arranged inside the support body 4.

[0017] The plunger 5 has several threaded holes 6 on its outer circumference, and a damping disc 7 for generating damping force is bolted to each threaded hole 6. Figure 1 As shown, this technical design increases the contact area between the plunger 5 and the damping fluid 20, and the damping disc 7 increases the damping force of the damping fluid 20 on the plunger 5, thereby improving the damping and vibration reduction effect of the product.

[0018] The bottom of the support body 4 is provided with several rolling elements 2 to facilitate its movement, and a limiting plate 3 for positioning the rolling elements 2 is provided at the bottom of the support body 4. Figure 1 As shown in the figure, in this section of the technology, the rolling element 2 can reduce the friction coefficient of the support body 4 when it moves horizontally after being compressed, which is beneficial to the horizontal movement of the support body 4; the limiting plate 3 can effectively prevent the rolling element 2 from falling off the bottom of the support body 4, thus improving the reliability of the product installation and use.

[0019] The bottom of the upper mounting plate 15 is provided with a positioning rod 17 connected thereto, and the positioning rod 17 is inserted into the compression spring 16. Figure 1 As shown in the figure, in this section of the technology, the positioning rod 17 provides a good guiding effect for the compression spring 16, preventing the compression spring 16 from swaying and causing vibration.

[0020] A scale plate 19 is provided on the outer surface of the housing 8, and a dimension plate 18 for easy observation of height is provided at the bottom of the upper mounting plate 15 corresponding to the scale plate 19. Figure 1 , Figure 2 As shown, in this section of the technology, the lower edge of the dimension plate 18 corresponds horizontally to the scale line on the scale plate 19, which can confirm the compression amount and force of the compression spring 16, thus improving the reliability of the product.

[0021] The damping disc 7 has a flat-bottomed, concave shape and is made of rubber material. For example... Figure 1 As shown, this technical design improves the flexibility of the damping disc 7, which helps the damping disc 7 maintain good elasticity in low-temperature environments and increases the service life of the damping disc 7.

[0022] The threaded holes 6 are evenly distributed on the outer circumference of the plunger 5, and radially distributed along the outer circumference of the plunger 5. For example... Figure 1 As shown, this technical design can maximize the number of threaded holes 6, increase the damping force and vibration reduction effect of the plunger 5, and facilitate processing and manufacturing.

[0023] The rolling element 2 is a metal sphere, and the surface of the sphere is carburized. For example... Figure 1 As shown, this technical design can extend the service life of the rolling element 2 and improve the load-bearing capacity of the product.

[0024] like Figure 1 , 2 As shown, during installation, the lower mounting plate 1 of the variable load damping box is fixed to a stable steel beam or foundation. Then, the pipe support 12 is connected to the upper mounting plate 15, and the pipe clamp 13 is connected to the pipe support 12. Finally, the pipe 14 is placed inside the pipe clamp 13 and fixed inside the pipe clamp 13 with bolts. Under the action of gravity, the pipe 14 will exert pressure on the upper mounting plate 15 through the pipe clamp 13 and the pipe support 12. The upper mounting plate 15 applies the weight of the pipe 14 to the compression spring 16. Under the pressure, the compression spring 16 is compressed downward until the elastic force of the compression spring 16 is balanced with the weight of the pipe 14. At this time, the dimension plate 18 connected to the bottom of the upper mounting plate 15 will block the scale plate 19. Since the load force data is marked on the scale plate 19, the load force borne by the compression spring 16 can be read by aligning the lower edge of the dimension plate 18 with the scale plate 19. After installing multiple variable load damping boxes on a pipeline, it is easy to see whether each variable load damping box is subjected to uniform force. Moreover, the installation height can be adjusted to ensure that each variable load damping box is subjected to uniform force, which can satisfy the pipeline support while also providing damping and vibration reduction.

[0025] like Figure 1 As shown, during operation, the pipe 14 vibrates under the action of excitation force. The pipe 14 transmits the vibration to the upper mounting plate 15 and the plunger 5 through the pipe clamp 13 and the pipe support 12. The plunger 5 drives the damping disc 7 to vibrate. Since the plunger 5 and the damping disc 7 are both immersed in the damping fluid 20, the plunger 5 and the damping disc 7 will exert a squeezing and shearing effect on the damping fluid 20. At the same time, the damping fluid 20 will generate a reverse damping force on the plunger 5 and the damping disc 7. The continuously deforming damping fluid 20 will convert the kinetic energy of the plunger 5 and the damping disc 7 into heat energy, and release it into the environment through the shell 8, thereby achieving the purpose of damping and vibration reduction.

[0026] like Figure 1As shown, when working in a high-temperature environment, the viscosity of the damping fluid 20 will decrease. When the plunger 5 vibrates with the pipe 14, it will drive each damping disc 7 to vibrate. Since there are many damping discs 7, the surface area of ​​the vibrating component is increased to a certain extent, allowing a larger area of ​​damping fluid 20 to deform, thereby increasing the damping force of the product and compensating for the problem of reduced viscosity of damping fluid 20 under high-temperature conditions.

[0027] like Figure 1 As shown, when working in a low-temperature environment, the viscosity of the damping fluid 20 will increase, and the damping force generated will also increase. Since the damping disc 7 is fixed to the outer circle of the plunger 5 by bolts, the strength of the damping disc 7 and the bolts is limited. The damping disc 7 is made of rubber with good elasticity, which has high flexibility and is not easy to be rigidly pulled, thus extending the service life of the damping disc 7.

[0028] like Figure 1 As shown, when the pipeline 14 is transporting a high-temperature medium, the pipeline 14 will undergo a certain deformation, which is called thermal displacement. When the pipeline 14 undergoes thermal displacement, it will drive the upper mounting plate 15 to move accordingly through the pipe clamp 13 and the pipe support 12. The upper mounting plate 15 will drive the plunger 5 to move accordingly. At this time, the plunger 5 will drive the support body 4 to move accordingly. Since the bottom of the support body 4 is equipped with a rolling element 2, the rolling element 2 and the upper surface of the lower mounting plate 1 are subject to rolling friction. The friction force is very small or even negligible. Therefore, the support body 4 can move freely on the upper surface of the lower mounting plate 1, avoiding the problem of stress on the pipeline caused by conventional support and improving the safety of pipeline 14 operation.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable load damping box, comprising a horizontally arranged lower mounting plate (1), a housing (8) vertically arranged and connected thereto at the top of the lower mounting plate (1), a damping fluid (20) for generating damping force being installed inside the housing (8), a lower positioning ring (9) connected thereto being installed inside the housing (8), an upper mounting plate (15) horizontally arranged above the housing (8) corresponding to the lower mounting plate (1), an upper positioning ring (11) vertically arranged and connected thereto at the bottom of the upper mounting plate (15), a plunger (5) vertically arranged and connected thereto at the bottom of the upper mounting plate (15), the upper end of the plunger (5) being located inside the upper positioning ring (11), the lower end of the plunger (5) being installed inside the housing (8), a dustproof sealing sleeve (10) being fitted on the outer circle of the lower positioning ring (9), the upper end of the sealing sleeve (10) being fitted on the upper positioning ring (11), and its lower end being fitted on the lower positioning ring (9), characterized in that: A support body (4) is vertically arranged inside the housing (8). The upper end of the support body (4) is inserted into the plunger (5). A compression spring (16) for bearing vertical loads is provided inside the support body (4).

2. The variable load damping box according to claim 1, characterized in that: The plunger (5) has several threaded holes (6) on its outer circumference, and a damping disc (7) for generating resistance is installed on each threaded hole (6) by bolts.

3. The variable load damping box according to claim 1, characterized in that: The bottom of the support body (4) is provided with several rolling bodies (2) to facilitate its movement, and a limiting plate (3) for positioning the rolling bodies (2) is provided at the bottom of the support body (4).

4. The variable load damping box according to claim 1, characterized in that: The bottom of the upper mounting plate (15) is provided with a positioning rod (17) connected thereto, and the positioning rod (17) is inserted into the compression spring (16).

5. The variable load damping box according to claim 1, characterized in that: A scale plate (19) is provided on the outer surface of the housing (8), and a size plate (18) is provided at the bottom of the upper mounting plate (15) corresponding to the scale plate (19) for easy observation of the height.

6. The variable load damping box according to claim 2, characterized in that: The damping disc (7) has a flat bottom and a concave shape and is made of rubber material.

7. A variable load damping box according to claim 2, characterized in that: The threaded holes (6) are evenly distributed on the outer circle of the plunger (5) and radially distributed along the outer circle of the plunger (5).

8. The variable load damping box according to claim 3, characterized in that: The rolling element (2) is a metal sphere, and the surface of the sphere is carburized.

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