Unlock instant, AI-driven research and patent intelligence for your innovation.

Tubular pipe for transporting liquid sodium

A liquid sodium and pipeline technology, which is applied in pipeline protection, pipeline system, pipeline anti-corrosion/rust protection, etc., can solve the problem that the detector is not completely satisfactory, and achieve the effect of avoiding risks

Inactive Publication Date: 2012-09-26
FRAMATOME ANP
View PDF12 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the use of such detectors, which are also sensitive, is still not entirely satisfactory
In fact, with these detectors, sodium leaks are only detectable once confirmed, and the test cannot stop the leak before it occurs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tubular pipe for transporting liquid sodium
  • Tubular pipe for transporting liquid sodium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The duct body 20 is covered by an inner continuous layer consisting of two continuous layers 40 and 50, namely:

[0051] A layer 40 in contact with the liquid sodium, typically a ceramic layer or through technically deposited nickel layer; and

[0052] An intermediate layer 50 is located between the pipe body 20 and the ceramic layer 40 . The intermediate layer 50 includes and is typically composed of a reactive material that, when in contact with sodium, converts to a modifying material having an electrical conductivity different from that of the reactive material.

[0053] During operation, when cracks start to appear at the pipe, one or more cracks are created at the ceramic layer 40 , which brings the liquid sodium present in the inner space 30 of the pipe into contact with the reactive material of the layer 40 .

[0054] Changes in the conductivity of the reactor wall can then be easily detected by the techniques described above (electrodes or magnetic sensors u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a tubular pipe (10) for transporting liquid sodium suitable for inhibiting any leaks of sodium outside the pipe. Said pipe includes a pipe body (20) covered on the inside with an inner layer which includes: a first continuous layer (40) made of ceramic or a metal or metal alloy, for being placed in contact with the liquid sodium carried by the tubular pipe; and between the pipe body and said first ceramic layer, an intermediate layer (50) made of a reactive material which, when said layer (50) contacts the liquid sodium, the layer turns into a modified material which has separate electric conductivity from that of the reactive material.

Description

technical field [0001] The present invention relates to the field of transporting liquid sodium in tubular pipelines. The invention relates more particularly to detecting the occurrence of cracks in such pipes in order to perceive the risk of sodium leakage out of the pipe and to suppress such leakage. Background technique [0002] Liquid sodium, ie metallic sodium above its melting temperature (97.8° C.), is a particularly efficient heat transfer and cooling fluid with a thermal conductivity that is a factor of 100 higher than that of water. This heat transfer fluid is used to ensure heat transfer in different types of devices, especially in certain engines or special cooling devices, by implementing a heat exchange. [0003] Liquid sodium finds particularly interesting applications in the nuclear industry. In fact, liquid sodium also has neutron-penetrating properties, in addition to its excellent heat-transfer properties that allow the extraction of high volumetric powe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/00G21C17/025F16L58/14F17D5/02G01M3/04
CPCY02E60/34G01M3/045G21C17/017G21C17/0255G21C17/002F16L9/14Y10T137/0318Y02E30/30
Inventor M·穆萨维A·阿姆布若斯
Owner FRAMATOME ANP