Large tank hanging static testing device

Abstract

The present invention relates to a large tank hanging static testing device which comprises a strengthening cap (9), upright columns (10), a steel frame (11), pull rods (13), a test platform (25), ground force bearing points (26), force loading equipment (27), force bearing ground rails (28), and a foundation (29). Multiple cantilevers are uniformly distributed in a radial way at the hanging part at the top end of the testing device and the periphery of the strengthening cap (9). Each of the cantilevers is provided with a through hole, and the force bearing points (26) around the test platform (25) and the through holes in the strengthening cap (9) cantilevers are orderly connected by multiple groups of pull rods (13). A test piece is fixedly connected to the strengthening cap (9) through the static force loading equipment steel frame (11) and is suspended in a cylindrical space with the strengthening cap (9) as the ceiling and the upright columns (10) as support walls. By using the large tank hanging static testing device, chip level front bonding low temperature combined static test of a model is smoothly completed, and a solid test technology reserve is made for the implementation and development of the low temperature static test of follow-up models.

Description

technical field [0001] The invention relates to structural static test technology, in particular to a suspension type static test device for a large storage tank. technical background [0002] With the continuous progress and development of aerospace science and technology, it is an inevitable trend in the development of rockets in the world that major scientific and technological countries develop large-scale and even heavy-duty launch vehicles. Low-temperature fuel is the propulsion energy of contemporary advanced spacecraft, and these fuels are contained in pressurized storage tanks , while the storage tank is subjected to loads such as axial pressure, bending moment, shear force, internal pressure and temperature during production, storage, hoisting, parking, transportation and flight, so the structural strength, stiffness and low temperature comprehensiveness of the storage tank during use Performance is very important to design and manufacturing, and needs to be verifi...

AI Technical Summary

Problems solved by technology

The test structure required by this project is a multi-section joint assembly, and the test installation height will naturally increase a lot; in order to make the local area of ​​the primary oxygen box 3 close to the front bundle 4 be in a low temperature environment, the test piece must be properly At the same time, the upper end of the test boundary is required to be fixed; the application point of the concentrated force load of the bundled support 5 is relatively close to the test piece, and the single point load can reach 300 tons; plus the section axial compression load of the front short shell 7 of the first-level hydrogen tank , the axial load that needs to be balanced by the test installation frame exceeds 1240 tons; at the same time, considering the size limit of the test platform of the test site and the difficulty of the site conditions such as the small tonnage of the bearing points of the foundation, these all bring great challenges to the design of the test scheme and the process of test implementation

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