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Device and method for monitoring deformation of flexible connecting pipe based on LD/PSD

A flexible nozzle and monitoring device technology, applied in the field of flexible nozzle deformation monitoring device based on LD/PSD, can solve the problems of high displacement sensor cost, high maintenance cost, high comprehensive layout cost, and achieve a simple and convenient measurement system. New installation and retrofitting, the effect of improving positioning accuracy and resolution

Pending Publication Date: 2022-07-05
中国船舶重工集团公司第七0四研究所
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Problems solved by technology

[0006](3) The cost of high-precision displacement sensors (eddy current sensors) is high, and there are high requirements for the performance of the back-end monitoring system, and the cost of comprehensive layout high
[0007](4) The measurement system is relatively complicated, and the maintenance cost is high, which is not conducive to product promotion

Method used

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  • Device and method for monitoring deformation of flexible connecting pipe based on LD/PSD
  • Device and method for monitoring deformation of flexible connecting pipe based on LD/PSD
  • Device and method for monitoring deformation of flexible connecting pipe based on LD/PSD

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Embodiment Construction

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] like image 3 , 4, the invention based on LD / PSD to realize the flexible takeover deformation monitoring device, including LD (semiconductor laser transmitter) laser rangefinder 3, two-dimensional PSD position sensor 4, wireless module, display host.

[0036] The LD laser distance meter 3 is installed on the upper flange 1 to monitor the axial position change between the upper and lower flanges; the two-dimensional PSD sensor 4 is installed on the lower flange 2 to monitor the radial displacement change of the upper and lower flanges , and connect with the display host through the wireless module.

[0037] Specifically, an LD laser distance meter is installed on the metal surface of the upper flange 1 to provide a reference light source and monitor the axial distance change between the upper and lower flanges; a two-dimensional PSD position sensor...

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Abstract

The invention relates to an LD / PSD-based flexible connecting pipe deformation monitoring device and method, and the device is characterized in that an LD laser range finder is installed on an upper flange, and is used for monitoring the axial position change between the upper flange and the lower flange; the two-dimensional PSD sensor is installed on the lower flange, is used for monitoring the radial displacement change of the upper flange and the lower flange, and is connected with the display host through the wireless module. According to the method, an LD laser emission device is electrified, so that laser vertically irradiates a PSD sensor end, the PSD sensor converts received spatial position information into an electric signal, and the electric signal is converted into an operable digital semaphore through an A / D conversion module after being amplified and operated by a signal processing circuit; meanwhile, the LD laser range finder receives reflected light, the axial distance between the two flanges is obtained through calculation, axial displacement data is transmitted to the PSD position sensor through the wireless module to be subjected to centralized calculation, and parameters such as the angle, the parallel deviation and the deformation of the flexible connecting pipe are obtained.

Description

technical field [0001] The invention relates to a deformation monitoring technology of a flexible nozzle, in particular to a device and method for monitoring the deformation of a flexible nozzle based on LD / PSD. Background technique [0002] Flexible nozzles are usually installed on the piping system to absorb the displacement of the piping system due to various effects (such as thermal deformation of equipment, etc.). The flexible pipe is necessary to ensure the reliable operation of the steam turbine and other rotating equipment pipelines and prolong their service life. If the deformation of the flexible nozzle exceeds the design allowable value, it will lead to the failure of the metal flexible nozzle, which will cause the failure of the piping system in which it is located, and eventually lead to serious wear and heat of the corresponding rotating machinery, resulting in serious damage or damage. Therefore, the monitoring of the deformation of the flexible nozzle occupi...

Claims

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Application Information

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IPC IPC(8): G01B11/16
CPCG01B11/16
Inventor 李佳桐俞炅旻符栋梁张博陈必文潘国培
Owner 中国船舶重工集团公司第七0四研究所
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