Cross-beam autoclave upper testing machine pressure balance device

Abstract

The invention discloses a cross-beam type pressure balance device of a testing machine on an autoclave, wherein one end of a stretching rod mechanism is connected with a sealing mechanism, the other end of the stretching rod mechanism is connected with a pressure balance mechanism through one end of a cross-beam connecting mechanism, and a connecting mechanism of a stretching machine is mounted at the other end of the cross-beam connecting mechanism. With adopting of the cross-beam type structural device, the number of sealing rings is decreased to two from three in original three-section rod type pressure balance, not only is the structure simplified, but also the friction resistance is greatly reduced; a processing method of the stretching rod and a pressure balance rod are simple and easy to install, and the installation precision of the pressure balance device and centering requirements of sample installation are reduced. The maintenance of the stretching rod and replacement operation of the sealing rings are simplified, the pressure balance effect is more reliable, and the experimental accuracy is higher.

Description

technical field [0001] The invention belongs to the field of nuclear science and technology, and relates to an experiment device for stretching, compressing and fatigue materials in an autoclave, in particular to a pressure balance device for a testing machine on a cross beam type autoclave. Background technique [0002] The existing technology is used in the autoclave for material experiments such as tension, compression, fatigue, etc., especially in the high temperature, high pressure, strong corrosive and other harsh environments in the autoclave, when the force sensor cannot be installed in the autoclave, the testing machine The load is transmitted to the inside of the autoclave through the loading rod (since most of the testing machines are tensile testing machines, the loading rod is referred to as "tensile rod"), and the load value is measured from the force sensor outside the autoclave. At this time, the measured value of the force sensor is not the actual load loade...

AI Technical Summary

Problems solved by technology

[0004] Although the design of the three-section hollow rod type stretch rod has the characteristics of compact structure, there are also many defects: the three-stage structure requires high coaxiality, and the processing of the stretch rod and the installation and alignment of the pressure balance shell are required. High; the stretch rod needs to drill a deep hole in the center, and it is very difficult to process when the stretch rod is long or the diameter is small; it is more difficult to replace the sealing ring, and multiple parts of the pressure balance device need to be completely disassembled; if the stretch rod is deformed, Or there is a deviation from the neutrality of the stretch rod when the sample is installed, which will cause a sharp change in frictional resistance and seriously affect the test results

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