Pressurization device for adherence and solidification of low-temperature test strainometer of large storage tank

Abstract

The invention belongs to the technical field of strain tests and specifically relates to a pressurization device for adherence and solidification of a low-temperature test strainometer of a large storage tank. The device comprises an upper cover plate (1), a pressing plate (2), magnets (3), an upper pressurization block (4), two high-temperature rubber blocks (5), a lower pressurization block (6) and a handle (7), wherein the upper pressurization block (4) is a hollow aluminum box structure, the lower side is sealed and equipped with a sunken area in the middle, and the upper side is opened and covered by the pressing plate (2) and the upper cover plate (1); the two magnets (3) are disposed on two sides of the sunken area in the aluminum box; the lower pressurization block (6) has an iron block structure, and the upper side is equipped with a sunken area in the middle and disposed oppositely to the upper pressurization block (4); and the handle (7) is disposed on the lower side of the lower pressurization block (6). In a working condition experiment which binds sextic liquid nitrogen media having been completed in a low-temperature static combined experiment in front of a second-level hydrogen tank, a first-level oxygen tank and a core level, valid data is acquired in strain measurement in order to provide an experiment basis for a design department to design the storage tank and carry out assessment.

Description

technical field [0001] The invention belongs to the technical field of strain testing, and in particular relates to a pressurizing device for sticking and curing strain gauges for low-temperature testing of large storage tanks. technical background [0002] The new generation of launch vehicles focuses on the development of large launch vehicles with a diameter of 5m. my country has no experience in designing and manufacturing tanks with a diameter of 5m. At the same time, the new-generation launch vehicle also used low-temperature high-energy liquid hydrogen (temperature -253°C) and liquid oxygen (temperature -183°C) as propellants for the first time. Such a large-scale tank low-temperature test has never been done in China. In order to obtain the low-temperature ultimate bearing capacity of the storage tank and to assess the performance changes of the storage tank structure, materials and welds at low temperatures, it is necessary to carry out a large-scale storage tank lo...

AI Technical Summary

Problems solved by technology

In the 1980s and 1990s, the strain / stress measuring points of the three storage tank low temperature tests were about 100 points, the number of measuring points was small, and the measuring points were all located on the smooth surface of the storage tank. The pressurized curing device was simple and had a single structure. Completely unable to meet the needs of large tank tests

At present, there are as few as 1,000 strain measuring points in large storage tanks, and as many as 2,000 points, and the measuring points are basically located in areas such as ribs and welds. The principle of pressurization also needs to be improved, otherwise the pressurization pressure requirements of the adhesive cannot be met

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