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Molten salt temperature difference corrosion test device

A corrosion test and molten salt technology, applied in the field of high temperature molten salt corrosion, achieves the effects of short processing and manufacturing cycle, simple structure and low cost

Active Publication Date: 2021-03-26
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a molten salt temperature difference corrosion test device in order to overcome the defect that the existing molten salt corrosion test device cannot realize dynamic temperature difference and is easy to control

Method used

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  • Molten salt temperature difference corrosion test device

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Embodiment 1

[0035] Such as figure 1As shown, Embodiment 1 of the present invention provides a molten salt temperature difference corrosion test device, which includes: a heating furnace 1 , a test pipeline 2 , and a gas supply pipeline 3 . Among them, the test pipeline 2 is made of stainless steel and or nickel-based corrosion-resistant alloy pipe, which includes a first constant temperature section 21, a first constant temperature section extension pipeline 22, a temperature compensation section 23, and a second constant temperature section 24 And a second constant temperature section extension pipeline 25, the first constant temperature section 21, the temperature compensation section 23 and the second constant temperature section 24 are sequentially arranged in series between the first constant temperature section extension pipeline 22 and the second constant temperature section extension pipeline 25 In the heating furnace 1 , the first constant temperature section extension pipeline 2...

Embodiment 2

[0050] Such as Figure 7 As shown, in the molten salt temperature difference corrosion test device provided in Embodiment 2 of the present invention, the first constant temperature section 21, the temperature compensation section 23, and the second constant temperature section 24 can also be connected in series to form a U-shaped molten salt circuit. A constant temperature section 21 is parallel to the second constant temperature section 24 .

[0051] In Example 2, the main part of the molten salt circuit adopts a U-shaped tube structure, which is mainly used for electrochemical research on molten salt corrosion. The left and right sides of the U-shaped tube structure are respectively the high temperature test section of the second constant temperature section 24 and the low temperature test section of the first constant temperature section 21, and the lower part is the temperature compensation section 23. Compared with the parallelogram structure, the U-shaped tube structure ...

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Abstract

The invention provides a molten salt temperature differential corrosion test device. The molten salt temperature differential corrosion test device comprises a heating furnace, a test pipeline, and agas supply pipeline; the test pipeline comprises a first constant temperature segment, a first constant temperature segment extension pipeline, a temperature compensating segment, a second constant temperature segment, and a second constant temperature segment extension pipeline; the first constant temperature segment, the temperature compensating segment, and the second constant temperature segment are arranged in the heating furnace in series successively; the first constant temperature segment extension pipeline is designed to stretch out from the heating furnace from the first constant temperature segment; the second constant temperature segment extension pipeline is designed to stretch out from the heating furnace from the second constant temperature segment; and the gas supply pipeline is connected with the first constant temperature segment extension pipeline and the second constant temperature segment extension pipeline respectively. The molten salt temperature differential corrosion test device can be used for simulating material service temperature difference environment effectively, is simple in structure, is short in processing manufacturing period, and is low in cost.

Description

technical field [0001] The invention relates to the field of high-temperature molten salt corrosion, in particular to a molten salt temperature difference corrosion test device. Background technique [0002] Fluoride and chloride molten salts (fluorine salts and chloride salts) have a series of good high temperature stability, high thermal conductivity, high specific heat, high boiling point, low saturated vapor pressure, good fluidity and wide liquid working range It has broad application prospects in nuclear reactors, high-temperature hydrogen production, solar thermal power generation, nuclear fuel reprocessing and other energy fields. However, high-temperature molten fluorine salts and chloride salts are corrosive to metal structural materials, especially the existence of temperature differences in molten salts will significantly intensify the corrosion of metal materials, resulting in corrosion damage to materials during long-term service, directly affecting the safe us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/02
CPCG01N17/02
Inventor 孙华傅杰苏兴治张鹏王建强
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI