Elastic back cavity pipeline vibration reduction and noise reduction device

Abstract

The invention discloses an elastic back cavity type pipeline vibration reduction and noise elimination device. The outer-layer pipe wall is composed of an outer glue layer, a framework layer and an inner glue layer. The framework layer is rewound in a middle flange, and the outer-layer pipe wall and the middle flange are sulfurated into a whole. The two ends of the outer-layer pipe wall are connected with an inlet end connection flange and an outlet end connection flange through an inlet end cover and an outlet end cover. The two ends of the inner-layer pipe wall of a rubber hose are connectedwith the inlet end connection flange and the outlet end connection flange correspondingly. The inner-layer pipe wall, the inlet end cover, the outlet end cover and the outer-layer pipe wall form an elastic back cavity type pipeline vibration reduction and noise elimination. When the elastic back cavity type pipeline vibration reduction and noise elimination device is used, the inlet end connection flange and the outlet end connection flange are connected with an upstream pipeline and a downstream pipeline of a pipeline system correspondingly, and vibration reduction and noise elimination canbe performed on the fluid-filled pipeline system. The elastic back cavity type pipeline vibration reduction and noise elimination device is low in rigidity, high in pressure resistance, high in displacement compensation capacity, simple in structure, small in size, good in low frequency and good in control effect on the vibration and noise of the pipeline system.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction and noise reduction of liquid-filled pipelines in industries such as ships and buildings, and in particular relates to an elastic cavity-backed pipeline vibration reduction and noise reduction device. Background technique [0002] The pipeline system is used for the purpose of transmitting medium and transferring energy, and has extensive and important applications in the fields of ships and buildings. The vibration and noise generated by the power equipment is not only transmitted along the pipe wall structure and its connected accessories, but also along the fluid medium in the pipeline, and the coupling of the two influences each other. It is often difficult to achieve ideal results by controlling one of the paths alone . Strong vibration will loosen or even break the pipeline accessories and the connecting parts between them, and will also cause noise pollution. [0003] CN 10400...

AI Technical Summary

Problems solved by technology

The vibration and noise generated by the power equipment is not only transmitted along the pipe wall structure and its connected accessories, but also along the fluid medium in the pipeline, and the coupling of the two influences each other. It is often difficult to achieve ideal results by controlling one of the paths alone

Strong vibration will loosen or even break the pipeline accessories and the connecting parts between them, and also cause noise pollution

[0003] CN 104006260 A discloses a steady-flow broadband muffler for water pipelines, which can realize broadband noise reduction for water pipelines; CN 103353042 A discloses a pressure-adaptive low-frequency broadband elastic resonance noise reduction device, which can realize low-frequency noise reduction for liquid pipelines Sound; CN 104500904 A discloses an integrated active muffler for high-pressure liquid-filled pipelines, which actively controls the noise in the pipeline; however, the above three devices only control the noise transmitted along the fluid medium

[0004] CN1265116C discloses a three-flange structure self-balancing flexible joint, which has a self-balancing structure, and under working pressure, the axial deformation of the flexible joint tends to zero; CN 106287061 A discloses a living flange self-locking joint Large-caliber low-rigidity balanced flexible pipe, including flexible pipe body and buckle joint, can attenuate the vibration transmitted along the pipe wall; however, the above two devices only control the vibration transmitted along the pipe wall

[0005] CN103968184 A discloses a pipeline vibration noise suppressor structure, which not only realizes the control of the liquid-filled pipeline noise, but also realizes the attenuation of the pipeline vibration; however, the vibration damping effect of the metal pipe body is poor, and the displacement compensation ability Insufficient, and additional devices are needed to adjust the back cavity pressure to adapt to the pressure of the liquid in the pipeline, the system is more complicated

Images