Steel sheet film strain test force-applying apparatus

Abstract

The invention relates to a steel sheet film strain test force-applying apparatus which includes a donate-shaped steel frame, a steel sheet stretching test piece, sliding swallow tail holders, swallow tail groove guide rails, guiding plates, frame reinforcing side plates, force-transmitting bolts, top bearing plates and hydraulic jacks. The steel sheet film strain test force-applying apparatus has same structure at each side thereof, and the sides are axially symmetrical in such a manner that in terms of structure, the sides are centrally symmetrical and axially symmetrical. Each side is configured such that the steel sheet stretching test piece is clamped by an upper sliding swallow tail holder and a lower sliding swallow tail holder; the sliding swallow tail holders can slide up and down along the swallow tail groove guide rail, can be adjusted at horizontal level; the top bearing plate is driven by the hydraulic jack to move outwardly; the top bearing plate drives the swallow tail groove guide rail to move outwardly through the force-transmitting bolts so as to realize the stretching of the steel sheet stretching test piece; and the force-transmitting bolts are supported and positioned by the frame reinforcing side plate and the guide plate. According to the invention, the apparatus can simulate axial and ring-direction strain born in the operation of a petroleum pipeline, is easy to operate, safe and reliable.

Description

technical field [0001] The invention belongs to the field of oil pipeline detection, and in particular relates to a steel plate thin film stress testing device for simulating axial and circumferential stresses suffered by oil pipelines during operation. [0002] technical background [0003] In recent years, with the rapid development of the oil and gas storage and transportation industry, technological innovations in oil pipeline inspection and maintenance are also changing with each passing day. However, behind the rapid development of high-tech, there are also a series of problems that people have to pay attention to, which have caused various engineering accidents. With geological movement and chemical changes, many oil and gas pipelines have gradually entered the middle and late stages of operation, and the deformation, dislocation and corrosion of oil pipelines all over the country are also increasing year by year. In order to meet the needs of simulating pipeline stre...

AI Technical Summary

Problems solved by technology

At present, most of the existing biaxial tensile testing machines in China are relatively old and have not been popularized and practical. There are problems such as limited loading capacity, unguaranteed accuracy due to device vibration, and high operating costs.

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