Strain measuring device for ocean platform

Abstract

A strain measuring apparatus used for ocean platform is disclosed that includes: first and second mounting bases, seal cavity, and strain bridge. The first and second mounting bases are mounted symmetrically on the both sides of seal cavity; the seal cavity is mounted on the measuring location of ocean platform, said strain bridge is mounted in seal cavity, the two ends connect with first and second mounting bases, strain gages are mounted on the strain bridge. The measurement results are got by strain gages via the measuring location of ocean platform and the variation of location measured by the strain bridge. So it can improve the measurement tolerance greatly, be used in deep ocean to prevent the strain gages form corrosion.

Description

technical field

[0001] The invention relates to a strain measuring device for an ocean platform. Background technique

[0002] Offshore platform is one of the important infrastructures for subsea oil exploration and exploitation. Since the offshore platform is built on the seabed, it has been impacted by seawater and ice loads for a long time. In order to detect the impact of tension and pressure on the basic structure, strain gauges are usually attached to sensitive places to directly measure the strain of this part. Although this method is simple, due to the influence of the overall deformation of the detection part, there will be a large error in the strain measurement data in a specific direction, which leads to inaccurate analysis of the results of the impact of seawater and ice loads on the offshore platform. Big deviation. In addition, the measurement of the part that goes deep into the seawater will cause a larger measurement error due to the corrosion of the stra...

Examples

Embodiment Construction

[0011] As shown in Fig. 1, the present invention includes: first and second mounts 4, 5, a sealed chamber 1 and a strain bridge 3, the first and second mounts 4, 5 are symmetrically fixed on both sides of the sealed chamber 1, and sealed The cavity 1 can be fixed on the measured position of the offshore platform through the first and second mounting bases 4 and 5, and the strain bridge 3 is arranged in the sealed cavity 1, and its two ends are respectively fixed with the first and second mounting bases 4 and 5 , the strain gauge 2 is fixed on the strain bridge 3; wherein, the strain bridge 3 has an appropriate width and thickness, and is made of tough material, mainly for the purpose of making this The change along the length direction of the strain bridge 3 can be more truly reflected, so as to accurately measure the strain change of this part. The strain bridge 3 can be made integrally with the sealed cavity 1, or can be fixed in the sealed cavity by welding or the like. wit...

technical field

[0001] The invention relates to a strain measuring device for an ocean platform. Background technique

[0002] Offshore platform is one of the important infrastructures for subsea oil exploration and exploitation. Since the offshore platform is built on the seabed, it has been impacted by seawater and ice loads for a long time. In order to detect the impact of tension and pressure on the basic structure, strain gauges are usually attached to sensitive places to directly measure the strain of this part. Although this method is simple, due to the influence of the overall deformation of the detection part, there will be a large error in the strain measurement data in a specific direction, which leads to inaccurate analysis of the results of the impact of seawater and ice loads on the offshore platform. Big deviation. In addition, the measurement of the part that goes deep into the seawater will cause a larger measurement error due to the corrosion of the stra...

Examples

Embodiment Construction

[0011] As shown in Fig. 1, the present invention includes: first and second mounts 4, 5, a sealed chamber 1 and a strain bridge 3, the first and second mounts 4, 5 are symmetrically fixed on both sides of the sealed chamber 1, and sealed The cavity 1 can be fixed on the measured position of the offshore platform through the first and second mounting bases 4 and 5, and the strain bridge 3 is arranged in the sealed cavity 1, and its two ends are respectively fixed with the first and second mounting bases 4 and 5 , the strain gauge 2 is fixed on the strain bridge 3; wherein, the strain bridge 3 has an appropriate width and thickness, and is made of tough material, mainly for the purpose of making this The change along the length direction of the strain bridge 3 can be more truly reflected, so as to accurately measure the strain change of this part. The strain bridge 3 can be made integrally with the sealed cavity 1, or can be fixed in the sealed cavity by welding or the like. wit...

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