Viscous damper for vibration reduction support

Abstract

The viscous damper comprises an upper connecting plate and a lower connecting plate opposite to the upper connecting plate, the lower portion of the upper connecting plate is connected with an upper shell, the upper portion of the lower connecting plate is connected with a lower shell, and a sealing sleeve is connected between the upper shell and the lower shell. The lower portion of the upper connecting plate is fixedly connected with a plunger extending into an inner cavity of the lower shell, damping liquid is contained in the lower shell, the lower end of the plunger is fixedly connected with a positioning plate, and the periphery of the positioning plate is connected with a plurality of steel wire rings in the radial direction. The weight of the pipeline can be supported through the plurality of steel wire rings, vibration energy can be converted into internal energy of the steel wire rings during vibration, and the rebound force of the steel wire rings is subjected to vibration reduction and consumption by the damping liquid, so that the problems of rebound force generated by the pressure spring and the like can be well avoided, the bearing capacity of the pipeline is ensured, and the service life of the pipeline is prolonged. And the overall vibration reduction effect of the viscous damper is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to viscous damper technical field especially relates to a viscous damper of damping support. BACKGROUND

[0002] Pipeline system is widely used in thermal power plant, nuclear power plant, chemical industry, ship and other fields, in the operation process, due to the sudden change of liquid velocity in the pipeline, the pressure in the pipeline will rapidly rise or drop, causing the vibration phenomenon of pipeline, due to the complex composition of pipeline system, it is difficult to eliminate vibration from the source of vibration. Long-term pipeline vibration can greatly shorten the service life of the pipeline, so it is necessary to carry out damping for the pipeline, and then ensure the safe operation of the pipeline system. Viscous damper is a general equipment for pipeline damping, the principle of viscous damper damping is to consume the vibration kinetic energy of the pipeline through the deformation of damping liquid, and the vibration kinetic energy is converted into the heat energy of damping liquid, reducing the adverse effects of vibration on the pipeline.

[0003] The viscous damper not only consumes the vibration kinetic energy of the pipeline through the deformation of damping liquid, but also needs to have certain supporting capacity for the pipeline to prevent the overload phenomenon of the viscous damper and ensure the damping effect on the pipeline. At present, the conventional viscous damper support is mostly realized by compression spring, but the compression spring will have rebound force after being pressed in the viscous damper, and the rebound force will be transmitted to the upper connecting plate of the viscous damper, thereby causing the pipeline to vibrate again, resulting in the decline of the overall damping capacity of the viscous damper. UTILITY MODEL CONTENTS

[0004] In order to solve the technical problems that the rebound force generated by the conventional viscous damper using compression spring support will cause the pipeline to vibrate again, resulting in the decline of the overall damping capacity of the viscous damper, the utility model provides the following technical scheme.

[0005] The utility model relates to a viscous damper of damping support, including upper connecting plate and with the lower connecting plate of opposite arrangement, the upper connecting plate lower part is connected with the upper shell, the lower connecting plate upper part is connected with the lower shell, the upper shell with the lower shell is connected with the sealing sleeve, the upper connecting plate lower part is fixedly connected with the plunger that extends to the lower shell inner chamber, the lower shell is filled with damping liquid, the plunger lower end is fixedly connected with the positioning plate, the positioning plate outer periphery is connected with a plurality of steel wire loops.

[0006] As a further technical scheme, the positioning plate and the steel wire loop all extend into the damping liquid.

[0007] As a further technical scheme, the positioning plate is disc structure, and the steel wire loop is annular array on the outer periphery of the positioning plate.

[0008] As a further technical scheme, the positioning plate is a hollow annular structure, and the steel wire loops are arranged in an annular array on the outer periphery of the positioning plate.

[0009] As a further technical scheme, the steel wire loop is movably arranged in the through hole on the outer periphery of the positioning plate.

[0010] As a further technical scheme, the steel wire loop is fixedly connected to the through hole on the outer periphery of the positioning plate.

[0011] The beneficial effects of the utility model, the viscous damper of the utility model is fixedly connected with the positioning plate at the lower end of the plunger, a plurality of steel wire loops are connected on the outer periphery of the positioning plate, the weight of the pipeline can be supported through the plurality of steel wire loops, the energy of vibration can also be converted into the internal energy of the steel wire loop when vibrating, and the rebounding force of the steel wire loop is damped and consumed by the damping liquid, the rebounding force and other problems caused by the compression spring can be well avoided, the overall damping effect of the viscous damper is ensured while the pipeline bearing capacity is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the sectional plane schematic view of the viscous damper of the damping support of the utility model,

[0013] Figure 2 is the sectional view of the viscous damper of the damping support of the utility model in the direction of A-A,

[0014] In the drawing: 1 - upper connecting plate; 2 - upper shell; 3 - sealing sleeve; 4 - plunger; 5 - damping liquid; 6 - steel wire loop; 7 - positioning plate; 8 - lower shell; 9 - lower connecting plate. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and examples.It should be understood that the specific examples described herein are only used to explain the utility model and not used to limit the utility model.It should be noted that the examples in the utility model and the features in the examples can be combined with each other without conflict.

[0016] In the description of the utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, structure and operation, so it cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated.In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0017] As Figure 1 shown, the utility model relates to a viscous damper of damping support, including upper connecting plate 1 and with upper connecting plate 1 opposite arrangement's lower connecting plate 9, upper connecting plate 1 is connected to the pipe clamp part of pipeline, and lower connecting plate 9 is connected to fixed frame. Upper connecting plate 1 lower part is connected with upper casing 2, and lower connecting plate 9 upper part is connected with lower casing 8, and upper casing 2 and lower casing 8 are connected with sealing sleeve 3, and sealing sleeve 3 can effectively avoid dust, rainwater and other foreign matters into viscous damper and pollute damping liquid, prolong the service life of viscous damper.

[0018] In preferred one embodiment, upper connecting plate 1 lower part fixed connection has the plunger 4 that extends into the inner chamber of lower casing 8, and lower casing 8 is filled with damping liquid 5, and the plunger 4 extends into damping liquid 5, when pipeline is vibrated, vibration is transmitted to damping liquid 5 through upper connecting plate 1 and plunger 4, and damping liquid 5 is extruded and sheared, and damping liquid 5 generates counteracting force to it, and plays the damping effect to pipeline.

[0019] As Figure 1 and Figure 2 shown, in preferred one embodiment, the lower end of plunger 4 is fixedly connected with positioning plate 7, and the outer periphery of positioning plate 7 is radially connected with a plurality of wire coils 6. At this time, a circle of through holes is formed around the outer periphery of positioning plate 7, and each through hole is provided with a wire coil 6, wherein the wire coil 6 is made of steel wire rope, and the steel wire rope is twisted into shape by a plurality of bundles of thin steel wires. When the upper connecting plate 1 is subjected to the weight of the pipeline, the plunger 4 and the positioning plate 7 will transmit the weight load of the pipeline to each wire coil 6, and the wire coil 6 will generate a rebound force after being deformed under pressure. Therefore, the plurality of wire coils 6 on the positioning plate 7 will play a supporting role. When the wire coil 6 is deformed due to pressure vibration, the thin steel wires on each wire coil 6 will generate heat through friction, thereby converting the vibration energy into heat energy. The positioning plate 7 and the wire coil 6 ensure the supporting role while improving the damping capacity of the entire viscous damper.

[0020] In preferred one embodiment, the positioning plate 7 and the wire coil 6 extend into the damping liquid 5, and the wire coil 6 generates a rebound force after being deformed under pressure, which extrudes and shears the damping liquid 5, and the damping liquid 5 generates a counteracting force to it, thereby playing a damping role and reducing the adverse effects of the rebound force on the pipeline.

[0021] In a preferred embodiment, the positioning plate 7 is a disc-shaped structure, and the steel wire loops 6 are arranged in an annular array on the outer periphery of the positioning plate 7, so that the contact area of the lower part of the positioning plate 7 with the damping liquid 5 is larger, and the damping force during damping is also larger, so that greater instantaneous damping capacity and load capacity can be provided. Of course, the positioning plate 7 is not limited to this solid structure, and the positioning plate 7 can also be a hollow annular structure, and the steel wire loops 6 are arranged in an annular array on the outer periphery of the positioning plate 7. In this embodiment, the steel wire loops 6 can be movably arranged in the through holes on the outer periphery of the positioning plate 7, and of course, the steel wire loops 6 can also be fixedly connected to the through holes on the outer periphery of the positioning plate 7, and the same load bearing and damping effect can be achieved, and the utility model does not make special limitations on this.

[0022] The working principle of the utility model is as follows: the weight of the pipeline is transmitted to the positioning plate 7 through the upper connecting plate 1, the positioning plate 7 transmits the weight load of the pipeline to each steel wire loop 6, the steel wire loop 6 deforms to generate a rebound force after being pressed, and the plurality of steel wire loops 6 on the positioning plate 7 can play a supporting role. When the pipeline vibrates, the vibration is transmitted to each steel wire loop 6 through the upper connecting plate 1, the plunger 4 and the positioning plate 7, and since the steel wire loop 6 is twisted from a plurality of bundles of thin steel wires, when the steel wire loop 6 deforms due to vibration, the thin steel wires on each steel wire loop 6 will rub against each other to generate heat, and the vibration energy is converted into heat energy. In addition, the plunger 4, the steel wire loop 6 and the positioning plate 7 are all immersed in the damping liquid 5, and when the plunger 4, the steel wire loop 6 and the positioning plate 7 vibrate, the vibration amplitude is generated, the damping liquid 5 is extruded and sheared, and at the same time, the damping liquid 5 generates a counteracting force, so as to play a damping role.

[0023] The preferred specific embodiments and examples of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments and examples, and various changes or equivalent replacements can be made within the knowledge range of those skilled in the art without departing from the concept of the utility model, therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the range protected by the utility model.

Claims

1. A viscous damper for vibration damping support, comprising an upper connecting plate (1) and a lower connecting plate (9) disposed opposite to the upper connecting plate (1), wherein an upper housing (2) is connected to the lower part of the upper connecting plate (1), a lower housing (8) is connected to the upper part of the lower connecting plate (9), a sealing sleeve (3) is connected between the upper housing (2) and the lower housing (8), a plunger (4) extending into the inner cavity of the lower housing (8) is fixedly connected to the lower part of the upper connecting plate (1), and damping fluid (5) is contained in the lower housing (8), characterized in that: The lower end of the plunger (4) is fixedly connected with a positioning plate (7), and the outer periphery of the positioning plate (7) is connected with a plurality of steel wire loops (6) in a radial direction.

2. A viscous damper for a vibration isolation support according to claim 1, characterised in that: The positioning plate (7) and the steel wire loop (6) both extend into the damping liquid (5).

3. The viscous damper of the vibration isolation support according to claim 1, characterized by: The positioning plate (7) is in a disc structure, and the steel wire loop (6) is arranged in an annular array on the outer periphery of the positioning plate (7).

4. The viscous damper of the vibration isolation support according to claim 1, characterized by: The positioning plate (7) is in a hollow annular structure, and the steel wire loop (6) is arranged in an annular array on the outer periphery of the positioning plate (7).

5. The viscous damper of the vibration isolation support according to claim 1, wherein: The steel wire loop (6) is movably arranged in a through hole on the outer periphery of the positioning plate (7).

6. The viscous damper of the vibration isolation support according to claim 1, wherein: The steel wire loop (6) is fixedly connected to the through hole on the outer periphery of the positioning plate (7).

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