CN209800597U

CN209800597U - Pipeline damper

Info

Publication number: CN209800597U
Application number: CN201820357074.4U
Authority: CN
Inventors: 许鸿胜; 李勃; 郭汝全
Original assignee: Jiexiu Bo Chuang Nanometer Mstar Technology Ltd
Current assignee: Jiexiu Bo Chuang Nanometer Mstar Technology Ltd
Priority date: 2018-03-16
Filing date: 2018-03-16
Publication date: 2019-12-17
Anticipated expiration: 2028-03-16

Abstract

The utility model discloses a pipeline damper, which comprises a cylinder barrel, a piston rod and a piston head, wherein the outer end of the piston rod is provided with a left fixed seat, a spring is arranged between the left fixed seat and the outer side of the cylinder barrel, and the spring is sleeved on the piston rod; the outer side of the cylinder barrel is provided with a right fixed seat; a gland is fixedly arranged in the cylinder barrel, and divides the interior of the cylinder barrel into a rod cavity and a rodless cavity; a floating block capable of moving along the axial direction is arranged in the rodless cavity, and the rodless cavity is divided into a compensation cavity and a pressure cavity by the floating block; a balance piston is arranged in the rod cavity and fixed on the piston rod, and a shaft sleeve and a sealing element are arranged at the connecting part of the balance piston and the piston rod; the balance piston divides the rod cavity into a balance cavity and a working cavity. The utility model discloses the inner structure is sealed effectual and the overall arrangement is compact, simple to operate sets up balanced chamber and compensation chamber, improves the damping effect, is applicable to the antivibration protection to the pipeline.

Description

pipeline damper

Technical Field

The utility model belongs to the technical field of the anti vibration device, relate to the attenuator, especially, relate to a pipeline attenuator.

Background

The severe vibration generated by medium flowing in the pipeline can cause the rigidity damage of the pipeline, and the pipeline damper can protect the pipeline to work under reasonable vibration, thereby ensuring the safe operation of equipment and the pipeline and prolonging the service life of the pipeline. The traditional pipeline damper adopts a single-rod structure and mainly comprises a cylinder barrel and a piston rod, wherein the cylinder barrel is divided into two chambers by a piston. When the unidirectional piston rod moves, the volume changes of the left side and the right side are different, and the volume change of fluid in the cavity caused by temperature change needs to be set with a balance cavity to balance and compensate the change of the internal volume of the pipeline damper; in addition, when the pipeline vibrates violently, the damper is required to be capable of achieving the effect of the rigid member rapidly, and the safe operation of the pipeline is guaranteed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a pipeline damper with good damping effect and convenient use.

The utility model adopts the technical proposal that: a pipeline damper comprises a cylinder barrel, a piston rod and a piston head arranged at one end of the piston rod, wherein a left fixed seat is arranged at the other end of the piston rod, a spring is arranged between the left fixed seat and the outer side of the cylinder barrel, the spring is sleeved on the piston rod, and the piston rod can move in the cylinder barrel along the axial direction; the other side of the cylinder barrel is provided with a right fixed seat;

A gland is fixedly arranged in the cylinder barrel, and divides the interior of the cylinder barrel into a rod cavity and a rodless cavity; a plurality of overflowing holes are regularly formed in the gland; a floating block which can move along the axial direction is arranged in the rodless cavity and is in sealing connection with the inner wall of the cylinder barrel; the slider divides the rodless cavity into a compensation cavity and a pressure cavity; a balance piston is arranged in the rod cavity and fixed on the piston rod, and a shaft sleeve and a sealing piece are arranged at the connecting part of the balance piston; the balance piston is hermetically connected with the inner wall of the cylinder barrel and can move left and right along with the piston rod; the balance piston divides the rod cavity into a balance cavity and a working cavity.

further, a viscous fluid is injected into the working cavity, and an inert gas is injected into the pressure cavity.

Further, metal rubber is arranged in the balance cavity.

Further, the piston rod may be provided with a multiple piston head; and a gap is reserved between the piston head and the inner wall of the cylinder barrel.

The utility model has the advantages that: pipeline damper inner structure is sealed effectual and the overall arrangement is compact, simple to operate sets up balanced chamber and compensation chamber, improves the damping effect, is applicable to the antivibration protection to the pipeline, changes original balanced chamber's spring into metal rubber simultaneously, utilizes novel metal material self-reset ability strong, difficult ageing, not fragile characteristic, reduces intensity of labour, need not frequent inspection change.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the device comprises a left fixing seat, 2, a spring, 3, a cylinder barrel, 4, a balance cavity, 5, a balance piston, 6, a working cavity, 7, a gland, 8, a compensation cavity, 9, a floating block, 10, a pressure cavity, 11, a piston rod, 12, a shaft sleeve, 13, a sealing piece, 14, a piston head, 15 and a right fixing seat.

Detailed Description

In order to understand the technical solution of the present invention more clearly, the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the pipeline damper includes a cylinder 3, a piston rod 11 and a piston head 14 disposed at one end of the piston rod 11, the other end of the piston rod 11 is provided with a left fixing seat 1, a spring 2 is disposed between the left fixing seat 1 and the outside of the cylinder 3, the spring 2 is sleeved on the piston rod 11, so that the piston rod 11 can move axially in the cylinder 3; the other side of the cylinder barrel 3 is provided with a right fixed seat 15;

A gland 7 is fixedly arranged in the cylinder barrel 3, a plurality of overflowing holes are regularly arranged on the gland 7, and the gland 7 divides the interior of the cylinder barrel 3 into a rod cavity and a rodless cavity; a floating block 9 capable of moving along the axial direction is arranged in the rodless cavity, and the floating block 9 is connected with the inner wall of the cylinder 3 in a sealing way; the slider 9 divides the rodless cavity into a compensation cavity 8 and a pressure cavity 10; a balance piston 5 is arranged in the rod cavity, the balance piston 5 is fixed on the piston rod 11 and can move left and right along with the piston rod 11, and a shaft sleeve 12 and a sealing piece 13 are arranged at the connecting part of the balance piston 5 and the piston rod 11; the balance piston 5 divides the rod cavity into a balance cavity 4 and a working cavity 6; viscous fluid, such as silicone oil, mechanical oil, shear thickening liquid and the like, is injected into the working cavity 6, and in order to prevent the viscous fluid in the working cavity 6 from leaking, the balance piston 5 is also in sealing connection with the inner wall of the cylinder barrel 3; the pressure chamber 10 can be filled with inert gas; the balance cavity 4 is internally provided with metal rubber, and the resilience of the balance piston 5 is enhanced by the metal rubber, so that the damper is reduced in transverse size, simple in structure, not easy to damage and age, and more stable in performance.

Preferably, the piston rod 11 can be provided with multiple piston heads, so that the shear thickening efficiency can be improved and the vibration reduction effect can be improved under different degrees of movement speeds of the piston rod 11; a gap is left between the piston head 14 and the inner wall of the cylinder 3.

Preferably, a throttle valve can be arranged on the gland 7 instead of the overflowing hole; the throttle valve controls the rate at which viscous fluid in the working chamber 6 flows to the compensator chamber 8.

The working principle is as follows: because the damper is of a single-rod type, when the piston rod 11 moves, the volume changes of the working chamber 6 and the pressure chamber 10 are different, the volume of a medium in the cylinder 3 is changed due to the temperature change, and the volume difference needs to be adjusted through the balance chamber 4. When the spring 2 is compressed to push the piston rod 11 to move rightwards, the volume of liquid in the working cavity 6 is compressed, part of the liquid enters the compensation cavity 8 through an overflowing hole or a throttle valve arranged on the gland 7, the floating block 9 is pushed to move rightwards to compress a medium in the pressure cavity 10, the metal rubber arranged in the balance cavity 4 is stretched, and the volume change is adjusted; on the contrary, when the pressure is reduced, the medium compressed in the pressure cavity 10 can push the floating block 9 to move left, the liquid in the compensation cavity 8 is pushed into the working cavity 6 through the overflowing hole or the damping valve on the gland 7, the balance piston 5 moves left, the metal rubber arranged in the balance cavity 4 contracts, and the volume change is adjusted.

the utility model discloses a pipeline damper inner structure is sealed effectual and the overall arrangement is compact, simple to operate, sets up balanced chamber and compensation chamber, improves the damping effect, is applicable to the antivibration protection to the pipeline, changes the spring in original balanced chamber into metal rubber simultaneously, utilizes novel metal material self-reset ability strong, difficult ageing, not fragile characteristic, reduces intensity of labour, need not frequent inspection change.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. A pipeline damper comprises a cylinder barrel (3), a piston rod (11) and a piston head (14) arranged at one end of the piston rod (11), and is characterized in that: the other end of the piston rod (11) is provided with a left fixed seat (1), a spring (2) is arranged between the left fixed seat (1) and the outer side of the cylinder barrel (3), and the spring (2) is sleeved on the piston rod (11) so that the piston rod (11) can move in the cylinder barrel (3) along the axial direction; the piston rod (11) may be provided with multiple piston heads; a gap is reserved between the piston head (14) and the inner wall of the cylinder barrel (3); the other side of the cylinder barrel (3) is provided with a right fixed seat (15);

A gland (7) is fixedly installed in the cylinder barrel (3), and the gland (7) divides the interior of the cylinder barrel (3) into a rod cavity and a rodless cavity; a plurality of overflowing holes are regularly arranged on the gland (7); a floating block (9) capable of moving along the axial direction is arranged in the rodless cavity, and the floating block (9) is connected with the inner wall of the cylinder barrel (3) in a sealing manner; the slider (9) divides the rodless cavity into a compensation cavity (8) and a pressure cavity (10); inert gas is injected into the pressure cavity (10); a balance piston (5) is arranged in the rod cavity, the balance piston (5) is fixed on a piston rod (11), and a shaft sleeve (12) and a sealing piece (13) are arranged at the connecting part of the balance piston; the balance piston (5) is connected with the inner wall of the cylinder barrel (3) in a sealing way and can move left and right along with the piston rod (11); the balance piston (5) divides the rod cavity into a balance cavity (4) and a working cavity (6); metal rubber is arranged in the balance cavity (4); and viscous fluid is injected into the working cavity (6).