SU714245A1 - Apparatus for corrosion testing of materials at elevated temperatures - Google Patents

Description

(54) INSTALLATION FOR CORROSION TESTS

MATERIALS WITH INCREASED TEMPERATURES

This invention relates to corrosion tests, namely to installations for corrosion tests at secondary temperatures.

A known installation for corrosion testing of metals at external temperatures, comprising a hermetically sealed column with a circulating electrically heated loop, sprayers for supplying the medium placed 1e in the lower chamber, and a gas trap in the upper part of the chamber til,

The closest to the technical essence and achievable pfe result is the installation of corrosion testing materials at elevated temperatures, containing a chamber, a glass-like partition, the edge of which is fixed on the upper end of the chamber, dividing the chamber into inner and outer parts, the last of which is intended for placement of the test specimens, a container for piping, loading and recording equipment.

However, the reliability of operation of these plants during the phase transition of the medium at high pressures is insufficient.

The aim of the invention is to increase the reliability of the installation.

This goal is achieved by the fact that the heater is implemented with the ability to regulate the temperature along the height of the chamber, the edge of the partition is fixed on the lower end of the chamber so that there is an annular gap between the chamber stalks and the partition through the medium tank.

The drawing schematically shows the described installation.

Claims (1)

The apparatus comprises a chamber 1 for the medium. installed in it a glass-like partition 2 forming an annular gap 3 with the camera 1, a channel 4 for inserting a thermocouple, a means 5, a crepe 5 of the specimens 6, a container 7 for the medium, a tubing 8 for providing medium woofing, a pipeline 9 for supplying the medium from the tank 3. 71 7 to the gap 3, the heater U of the chamber containing autonomously controlled sections, the heater 11 of the tank 7 for the medium are installed on the pipelines of the refrigerator 12 and the valves 13 and 14 registering the pressure gauge 15 and. sixteen.. ;. :. ; ; The device operates as follows, a certain amount of a liquid substance is poured into the medium tank 7 and the chamber 1 in which samples 6 are placed. The heater 1O of chamber 1 is turned on and the mode of each section of the heater is set in such a way that a smooth change in temperature is formed along chamber 1, the size of the OHR G in its upper part to SOO in the lower part. At the same time, part of the medium evaporates and the pressure in chamber 1 rises. In order to comprehend the set value of pressure in chamber 1, heater 11 of tank 7 krts of medium is switched on, when This liquid is spilled and through pipe 9 is forced out into gap 3, the level of fluid in chamber 1 at the same time and fluid enters 6 zone of higher temperature. The liquid evaporates, the pressure in chamber 1 rises, and the liquid level in gap 3 drops. AT . Depending on the size of the gap 3, the pressure in chamber 1 is more or less smooth. If leakage or other need for rapid pressure relief occurs, 5, 4 minutes, the refrigerator 12 is turned on and the valve 13 is closed, and the medium in the pipeline 8 and chamber 1 is fast. load, cool and reeco pressure decreases. The invention of the installation for corrosion-resistant materials at elevated temperatures contains a chamber, a stacked partition, the edge of which is fixed on the end of the chamber, dividing the chamber into inner and outer parts, the latter of which is designed to accommodate the test samples, medium tank, pipe | ) gadfly, heater, and recording equipment, so on; "TTO, d aiming to ensure the reliability of the installation, the heater is made with the ability to control the temperature along the height of the chamber, the edge of the zekrepley partition at the bottom of the chamber is such that the intersection of the chamber and the partition have a ninth gap, communicated by pipeline with the capacity for the medium . Sources of information taken into account in the examination 1, USSR Author's Certificate No. 144489, class, Q O1 W 3/18. 1958, i 2, USSR inventor's certificate for N9 2518569, class, q OlW 17/00, 1977 (prototype). 15 sixteen --H ..