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A measuring device for bending stiffness and torsional stiffness of hose

A technology of bending stiffness and torsional stiffness, applied in the field of measuring devices, can solve the problems of sensor data changes, instability, and low measurement accuracy, and achieve the effects of strong engineering practicability, stable load, and convenient operation

Active Publication Date: 2016-08-24
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are following disadvantages in using this method for measurement: first, the measurement accuracy is low, and the crane is unstable after the steel chain is applied, causing the data of the sensor to change all the time, and the range of change is large, resulting in inaccurate measurement structure; There is no joint installed at the time, and the hose transmits force through the joint. If the joint is not considered, the interaction between the layers cannot be considered, so the stiffness measurement value is also inaccurate.
The disadvantage of this test method is that the measurement accuracy is low. One is that the force of the crane is unstable; the other is that the torsion angle of the steel beam cannot accurately reflect the torsion angle of the hose because the rigidity of the joint is inconsistent with that of the hose.

Method used

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  • A measuring device for bending stiffness and torsional stiffness of hose
  • A measuring device for bending stiffness and torsional stiffness of hose
  • A measuring device for bending stiffness and torsional stiffness of hose

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Such as Figure 1~3 As shown, the present invention includes a main support 1, a fixed shaft support 2 is slidably connected to the top of one end of the main support 1, a fixed shaft 3 is fastened on the fixed shaft support 2, and a fixed shaft 3 is connected on the top of the other end of the main support 1. Two rotating shaft supports 4 arranged at intervals are fastened and connected, and the two rotating shaft supports 4 are rotatably connected to a rotating shaft 5 , and the fixed shaft 3 and the rotating shaft 5 have a coaxial relationship. The bottom of the fixed shaft support 2 is provided with a downwardly protruding ear plate 2-1, and the end side of the main support 1 is provided with a downwardly protruding ear plate 1-1, between the two ear plates 1-1, 2-1 They are connected by an oil cylinder 6, and the oil cylinder 6 is paralle...

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Abstract

The invention relates to a measuring device for bending stiffness and torsional stiffness of a hose, comprising: a main support, a fixed shaft support, a fixed shaft, two rotating shaft supports, a rotating shaft, a first ear plate, a first Two ear plates, one first oil cylinder, one movable support, one second oil cylinder, one third ear plate, one fourth ear plate, one third oil cylinder, one rotating crank, two fourth oil cylinders, one first handle , a first ratchet, a crank and a second handle. The present invention is sequentially provided with an oil cylinder for moving the fixed shaft support to facilitate installation of the hose, an oil cylinder for forcing the hose to bend vertically, and an oil cylinder for driving the rotating crank to rotate the hose so as to realize simultaneous measurement of the bending stiffness of the hose and the function of torsional rigidity; and the present invention is simple in principle, convenient in operation, and has strong engineering practicability.

Description

technical field [0001] The invention relates to a measuring device, in particular to a measuring device for bending stiffness and torsional stiffness of a hose. Background technique [0002] With the development of hose technology, more and more oilfield development projects use hoses. Before the hose is applied, its performance needs to be known to provide a more reliable basis for its use. The cross-sectional characteristics of the hose are a basic parameter of the hose, and the stiffness is the basis of the physical properties of the section and a key parameter in the analysis of pipeline applications. However, for the hose with complex structure, the theory cannot get accurate data of stiffness. [0003] The hose is composed of metal and non-metal materials. The typical hose structure includes a skeleton layer, an internal pressure sealing layer, a compression armor layer, a tensile armor layer and an outer cladding layer. Between each layer is The load is transmitted ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/20G01N3/22
Inventor 曹静周巍伟陈星沙勇李丽玮刘国璋宋平娜刘栋杰
Owner CHINA NAT OFFSHORE OIL CORP
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