Low-volatility corrosion testing device

A corrosion test and low-volatility technology, which is applied to measuring devices, weather resistance/light resistance/corrosion resistance, instruments, etc., can solve the problems of large liquid backflow resistance, inability to form stable backflow, and inability to form backflow liquid, etc., to reduce escape Effect

CN101718675AActive Publication Date: 2010-06-02NUCLEAR POWER INSTITUTE OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-06-02

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Abstract

The invention belongs to corrosion testing technology, and in particular discloses a low-volatility corrosion testing device, which comprises a flask, a cooling inner tube arranged on the mouth of the flask, and a cooling outer tube arranged in the cooling inner tube; the upper and lower parts of the cooling outer tube are respectively provided with a cooling water outlet pipe and a cooling water inlet pipe; the cooling inner tube comprises a lower ball clustering tube and an upper spiral tube which are communicated; the tube wall at the bottom of the ball clustering tube is connected with the cooling outer tube; the tube wall on the top of the spiral tube is connected with the cooling outer tube; the inner side at the bottom of the cooling outer tube is provided with an annular collecting tank; the bottom of the annular collecting tank is connected with a flow guiding tube of which the flow guiding port has the section vertical to the horizontal plane; the top of the spiral tube is provided with a glass ball of which the diameter is slightly greater than the inner diameter of the orifice of the spiral tube; and the orifice of the cooling outer tube is provided with a hollow tube plug. The low-volatility corrosion testing device can ensure that the test solution in a corrosion test has little volatility, the change of components of the test solution is greatly reduced, and simultaneously the solution in the corrosion test forms continuous and stable refluxed liquid.
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Description

technical field

[0001] The invention belongs to corrosion test technology, in particular to a novel corrosion test device with low volatility. Background technique

[0002] In the engineering environment that needs to use various high-temperature acidic or alkaline media, the structural materials used in the equipment must have sufficient corrosion resistance to these media (the corrosion rate must not exceed the design specification), and relevant inspections are required. Enhanced corrosion test. However, the general corrosion test equipment currently used for uniform corrosion, stress corrosion, intergranular corrosion, crevice corrosion, etc. has insufficient cooling capacity for the escaping steam generated by high temperature, so the volatilization of the solution used in the corrosion test will cause the composition of the test solution to change. Changes will affect the test results and reduce the reliability of the calculated corrosion rate; at the same time, the i...

Examples

Embodiment Construction

[0021] Such as image 3 A low-volatility corrosion test device shown includes a conical flask 10, a cooling inner tube installed on the flask 10, the lower part being a string tube 1 and the upper part being a spiral tube 5, and a cooling outer tube outside the cooling inner tube. Pipe 2, the upper and lower parts of the cooling outer pipe 2 are respectively provided with a cooling water outlet pipe 3 and a cooling water inlet pipe 4; 2 are connected together, and the pipe wall at the top of the spiral pipe 5 is connected with the cooling outer pipe 2; a hollow glass ball 6 is placed at the nozzle of the top of the spiral pipe 5, and a test tube-shaped hollow plug 7 is arranged on the top of the hollow glass ball 6 for cooling. The outer pipe 2 is slightly higher than the spiral pipe 5 to ensure that the hollow pipe plug 7 can be plugged into the cooling outer pipe 2; The ring-shaped right-angle folded plate is formed, and a diversion pipe 9 is connected to the bottom of the ...