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Viscous damper fluid viscosity monitoring device based on piezoelectric ceramic sensor

A technology of viscous damper and piezoelectric ceramics, which is applied in the direction of measuring devices, instruments, flow characteristics, etc., can solve the problem of not being able to quantitatively reflect the change of fluid viscosity, etc., achieve broad promotion market and application prospects, simple structure, simple installation Effect

Pending Publication Date: 2021-04-20
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The traditional use of piezoelectric ceramic sensors is aimed at the measurement or detection of fluid viscosity rather than monitoring, and cannot quantitatively reflect changes in fluid viscosity

Method used

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  • Viscous damper fluid viscosity monitoring device based on piezoelectric ceramic sensor
  • Viscous damper fluid viscosity monitoring device based on piezoelectric ceramic sensor
  • Viscous damper fluid viscosity monitoring device based on piezoelectric ceramic sensor

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Embodiment Construction

[0016] The invention provides a viscous damper fluid viscosity monitoring device based on a piezoelectric ceramic sensor, the specific implementation is as follows:

[0017] Two piezoelectric ceramic sensors 1 with stable performance packaged in copper shells are used, one is used as a driver and the other is used as a receiver, and the two piezoelectric ceramic sensors 1 are bonded to the corresponding two cork blocks with epoxy glue 3 surface, after the epoxy resin is completely air-dried, use epoxy resin glue to bond the two cork blocks 3 to the inner wall of the corresponding viscous damper 5 cylinder respectively. The size of the cork block 3 should match the piezoelectric ceramic sensor 1 and have a certain thickness to absorb the energy of the pressure wave propagating along the inner wall of the damper cylinder. In the viscous damper 5, an annular baffle 4 is arranged near the position of the piezoelectric ceramic sensor 1 to protect the piezoelectric ceramic sensor 1 ...

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Abstract

The invention belongs to the technical field of civil engineering, intelligent materials and health monitoring, and provides a viscous damper fluid viscosity monitoring device based on a piezoelectric ceramic sensor, and the device comprises the piezoelectric ceramic sensor, a wire, a cork block, a baffle plate and a viscous damper. When the fluid viscosity of the viscous damper is changed, the energy dissipation of pressure waves during propagation in the fluid is changed, signals received by the piezoelectric ceramic sensor are changed, and the viscosity of the fluid in the viscous damper can be calculated by utilizing the change of the amplitude of the received signals. The device is simple in structure and precise in monitoring result, and a simple, convenient and feasible method is provided for real-time monitoring of the fluid viscosity of the viscous damper in engineering.

Description

technical field [0001] The invention relates to the fields of civil engineering, intelligent materials and health monitoring, specifically, when the viscosity of the viscous damper fluid changes, the energy dissipation of the pressure wave propagating in the fluid will change, and the piezoelectric ceramic sensor receives the The signal will change, and the viscosity of the fluid in the viscous damper can be calculated by using the change of the received signal amplitude. This monitoring device based on the piezoelectric ceramic sensor is a real-time monitoring of the fluid viscosity of the viscous damper in engineering. A simple and feasible method is provided. Background technique [0002] Viscous dampers are widely used in civil engineering to suppress structural vibrations caused by earthquakes or wind vibrations, and the viscosity of the fluid used in a viscous damper has a great influence on its damping performance. However, factors such as temperature and pressure ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00
CPCG01N11/00G01N2011/0066F16F9/3292F16F2228/008F16F2224/0283G01N11/16
Inventor 霍林生陈胜斌
Owner DALIAN UNIV OF TECH
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