Sensor mounting device for vortex-induced vibration test of spanning pipeline
An installation device, vortex-induced vibration technology, applied in vibration testing, measuring devices, testing of machine/structural components, etc., can solve the inaccurate test results of lateral vibration frequency of suspended-span pipelines, affect the flow-direction amplitude measurement results of suspended-span pipelines, Affecting the measurement results of the lateral amplitude of the suspended span pipeline, etc., to achieve the effects of reliable performance, simple structure and reasonable installation
Pending Publication Date: 2019-02-19
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
This test method has the following deficiencies: (1) It is difficult to test the flow direction or lateral two-degree-of-freedom vibration of the suspended pipeline at the same time; The reflective surface changes due to the lateral movement of the spanning pipe, which will affect the measurement results of the flow direction vibration amplitude of the spanning pipe, resulting in inaccurate experimental results of the flow vibration frequency of
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[0032] A sensor installation device for vortex-induced vibration testing of suspended pipelines, such as figure 1 As shown, the sensor installation device is a set of rings, and the set of rings is provided with a mounting groove 1 for installing the sensor 4, such as Figure 7 As shown, the installation cavity 1 has a slight draft angle 11 to facilitate the installation of the fixed sensor; as figure 1 , 2 As shown, the side corresponding to the installation groove is the stretching port 2, and the two ends of the stretching port 2 are connected with equal-sized, equal-thick and symmetrical stretching plates 3, and one end of the stretching plate 3 is installed with The support seat 31 has a circular hole on the support seat 31; as figure 2 As shown, a stretch switch 21 is arranged in the stretch port 2, such as image 3 , 4 As shown, the pull switch 21 is made up of a pressing body 211, a rotating body 212, a fixed pipe 213, a pressing and pulling spring 214, and a stre...
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The invention discloses a sensor mounting device for a vortex-induced vibration test of a spanning pipeline. The device is characterized in that: the sensor mounting device is a lantern ring part; a mounting groove cavity is opened in the lantern ring part and is used for mounting the sensor; the side corresponding to the mounting groove cavity is a stretching opening; stretching plates of equal size, equal thickness and symmetrical position are connected with the two ends of the stretching opening; and a supporting seat is arranged on the end of one stretching plate, wherein a circular hole is opened in the supporting seat. According to the sensor mounting device for the vortex-induced vibration test of the spanning pipeline, the sensor and the spanning pipeline are enabled to synchronously vibrate, so that the test of two-degree-of-freedom vibration of the flow direction and transverse direction of the spanning pipeline can be completed simultaneously by adopting a triaxial sensor under the same test condition; and meanwhile, sensors such as an acceleration sensor, a speed sensor or a displacement sensor mounted on the spanning pipeline are prevented from affecting the flow fieldmorphology, and the influence of the mass of the sensor additional mounting device on the actual vibration of the spanning pipeline is reduced.
Description
technical field [0001] The invention relates to the structural design of a sensor installation device in a vortex-induced vibration test, in particular to a sensor in which acceleration, velocity or displacement sensors are fixedly installed in the inner cavity of a suspended pipeline when testing the vortex-induced vibration of a suspended pipeline under the action of a flow field Install the device. Background technique [0002] Existing test methods for vortex-induced vibration of suspended pipelines are aimed at the flow direction or lateral vibration of elastically supported suspended pipelines. Integrated ultrasonic displacement sensors and related equipment are often used to measure the flow direction or lateral amplitude of suspended pipelines, and the flow direction and transverse amplitude, the ultrasonic displacement sensors are located directly in front of and directly above the suspended pipeline, and the integrated ultrasonic displacement sensor is often equipp...
Claims
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Login to View More IPC IPC(8): G01M7/06
CPCG01M7/06
Inventor 覃柏英林贤坤刘岳飞
Owner GUANGXI UNIVERSITY OF TECHNOLOGY