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Bionic erosion-resisting pipeline elbow

A pipeline elbow, erosion-resistant technology, applied in the field of chemical engineering, can solve problems such as difficulty in obtaining ideal results, and achieve the effects of enhancing corrosion resistance, protecting walls, and improving service life

Active Publication Date: 2015-06-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional methods to improve pipeline erosion resistance, such as using erosion-resistant pipeline elbow materials, spraying erosion-resistant coatings, and optimizing the relationship between pipeline elbows and flow field parameters, can improve pipeline erosion resistance to a certain extent. However, due to the direct impact of solid particles on the elbow, it is still difficult to achieve the desired effect

Method used

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  • Bionic erosion-resisting pipeline elbow

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Embodiment Construction

[0018] see Figure 1 to Figure 4 As shown, it is the first embodiment of the present invention. In this embodiment, the bionic ribs 1 are evenly arranged on the eroded surface of the pipe elbow, and the bionic ribs 1 are arranged along the flow direction in the span direction, and the bionic ribs 1 contact the curved surface of the flow field. The characteristic curve of the bionic rib is a section of inferior arc or semicircle. According to the difference of the Reynolds number of the continuous phase in the pipe elbow, the angle α between the two bionic ribs is 3-15°, the height h of the bionic rib is 0.2-4mm, and the section arc of the bionic rib The radius r is 0.2-5 mm.

[0019] In this embodiment, when the diameter of the pipeline is 100mm, the two-phase flow in the pipeline is oil and sand respectively, and the density of oil is 800kg / m 3 , when the viscosity is 0.048kg / m s, the speed is 6m / s, the average particle size of the sand is 0.55mm, and the flow rate is 2.2kg / ...

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Abstract

The invention discloses a bionic erosion-resisting pipeline elbow. Bionic ribs are evenly distributed on the erosion surface of the pipeline elbow, the spreading direction of each bionic rib is arranged in the flow direction, and the characteristic curve of the contact curve surface of each bionic rib and a flow field is a minor arc or a semicircle; alternatively, the spreading direction of each bionic rib perpendicular to the incoming flow direction, and the characteristic curve of the contact curve surface of each bionic rib and the flow field is two externally tangent arcs. The bionic rib structure of the bionic erosion-resisting pipeline elbow is the main position eroded by solid particles, the position is higher than the wall surface by a certain distance, and namely the thickness of the elbow is increased locally. The bionic ribs effectively control the near wall region flow field of a multiphase flow, so that the impact angle between the solid particles and the wall surface is controlled, and the wall surface of the pipeline elbow is effectively protected from the flow field control angle.

Description

technical field [0001] The invention relates to a pipeline connector, in particular to a bionic erosion-resistant pipeline elbow. in the field of chemical engineering. technical background [0002] Pressure pipelines have the advantages of large capacity, high efficiency, low loss and low cost in transporting fluid or fluid containing solid particles. They are widely used in petrochemical, metallurgy, nuclear power, thermal power, coal chemical, mining and construction industries. An important part of equipment. As far as the oil and gas transportation industry is concerned, 70% of my country's oil and 99% of natural gas are transported through pipelines. The total length of national oil and gas pipelines is 80,000 kilometers. During the "12th Five-Year Plan" period, the length of new pipelines in my country is expected to reach 64,000 kilometers . The pressure pipe elbow is an important connection part of the pressure pipe. Due to the drastic change of the flow field at t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L43/00F16L57/06
CPCF16L43/00F16L57/06
Inventor 张成春章甘李雪丽王现宝王晶韩志武
Owner JILIN UNIV
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