Self-balancing loading device of high pressure gas environment material testing machine

Abstract

The invention relates to test equipment for mechanical properties of material, and aims at providing a self-balancing loading device of a high pressure gas environment material testing machine. The device comprises an environmental cabinet airtight cavity, and a loading rod is arranged on an environmental cabinet sealing base in a penetration manner; a disk in the airtight cavity is fixedly connected with one end of a load transmitting frame; a cabinet body opposite to the environmental cabinet sealing base is provided with a balance sleeve in a penetration manner, and one end of the balance sleeve is fixedly connected to one end of the load transmitting frame opposite to the disk; the balance sleeve is sleeved on the outside of a load measuring rod, on end of the load measuring rod is connected and fixed to the external side of the cabinet body, and the other end of the load measuring rod is connected with an upper sample clamp; the loading rod passes through the disk, and is fixedlyconnected to the disk, and an end part of the loading rod is connected with a lower sample clamp; supposing that the diameter of the load measuring rod is D1, the external diameter of the balance sleeve is D2 and the diameter of the loading rod is D3, D22-D12 = D32. With rational design of cross sections of the loading rod, the load measuring rod and the balance sleeve, the self-balance of the loading device of the high pressure gas environment material testing machine can be realized.

Description

technical field [0001] The invention belongs to testing equipment for mechanical properties of materials, in particular to a loading device for a high-pressure gas environment material testing machine with a self-balancing function. Background technique [0002] In petrochemical, natural gas chemical and other traditional energy industries, as well as hydrogen energy, nuclear energy and other new energy fields, there are a large number of high-pressure equipment. They work in the environment of sulfur-containing steam, hydrogen, high-temperature water vapor, etc. Hydrogen embrittlement, etc. cause material failure, resulting in catastrophic consequences. Therefore, it is necessary to test and evaluate the durability of materials in these extreme environments. The development of a high-pressure gas environment material testing machine is the first step in carrying out relevant experimental research. [0003] In order to learn from the existing methods of testing and evaluati...

AI Technical Summary

Problems solved by technology

[0004] The hydraulic balance method will consume part of the loading capacity of the main engine of the testing machine, and when the tested sample breaks, the gas thrust will impact the power output device of the main engine, reducing its control accuracy and service life; the method of setting the balance chamber requires setting multiple High pressure dynamic seal, high machining accuracy requirements

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