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An optical fiber monitoring method for tank body deformation of large crude oil storage tank

A crude oil storage tank, large deformation technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problem of inability to obtain local and overall accurate deformation details

Active Publication Date: 2021-06-08
CHINA SPECIAL EQUIP INSPECTION & RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides an optical fiber monitoring device, system and method for the deformation of a large crude oil storage tank, aiming at solving the problem of inability to obtain accurate local and overall deformation details

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  • An optical fiber monitoring method for tank body deformation of large crude oil storage tank
  • An optical fiber monitoring method for tank body deformation of large crude oil storage tank
  • An optical fiber monitoring method for tank body deformation of large crude oil storage tank

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Embodiment Construction

[0055] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0056] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" ma...

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Abstract

The invention relates to an optical fiber monitoring method for tank body deformation of a large crude oil storage tank, wherein the optical fiber monitoring device for tank body deformation of a large crude oil storage tank includes a distributed optical fiber strain sensor and an optical fiber grating array strain sensor; the distributed optical fiber strain sensor is in the form of spiral winding Set on the surface of the storage tank to be monitored, the fiber grating array strain sensor is fixed on the surface of the storage tank to be monitored where the deformation occurs; when the distributed optical fiber strain sensor is arranged on the storage tank in a spiral manner , the helical pitch is H, and the helical angle is θ; the helical pitch H is 0.3 to 0.4 times the height of each wall plate on the storage tank, where θ=arctan(H / D); D is the diameter of the storage tank, and the helical angle is the distribution The included angle between the optical fiber strain sensor and the diameter direction of the tank foundation plane. It realizes the deformation monitoring of the whole storage tank by using the distributed optical fiber strain sensor, and the accurate monitoring of the local storage tank by the fiber Bragg grating array strain sensor.

Description

technical field [0001] The invention relates to the field of storage tank monitoring, in particular to an optical fiber monitoring method for tank body deformation of a large crude oil storage tank. Background technique [0002] With the development of my country's petroleum industry and the increase of crude oil and refined oil reserves, there are more and more large-scale oil depots and oil tank farms in China. The large crude oil storage tanks are often arranged in a large number. Once an accident occurs, it will cause huge loss of personnel and property. During the long-term service of the storage tank, due to the rise and fall of the liquid level in the tank, deformation of the foundation, corrosion and thinning of the tank wall, strong wind and sunshine, etc., the tank body will be deformed. When the deformation of the storage tank reaches a certain level, it may It will cause the failure of the sealing device between the floating plate and the tank wall, causing the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/16
CPCG01B11/165G01B11/18
Inventor 陈光丁克勤张继旺
Owner CHINA SPECIAL EQUIP INSPECTION & RES INST
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