A pipe joint pressure fatigue test device and test method

Abstract

The invention provides a pipe joint pressure-resisting fatigue testing device. The pipe joint pressure-resisting fatigue testing device comprises a support frame, a pressure generating device, a pressure transmitting device, a pressure converting device, and a counting detection device, the pressure generating device, the pressure transmitting device, the pressure converting device, and the counting detection device are arranged on the support frame correspondingly; the support frame is an experiment operation platform which is made of thickened aluminum profile and designed according to installation positions of devices; the pressure generating device comprises a set of driving motors, a cam, and a hydraulic cylinder; the pressure transmitting device comprises a first oil pipe and a second oil pipe, and the pressure converting device comprises a pressure air tank with a clear internal volume, and a high pressure one-way inflation valve; and the counting detection device comprises a Hall induction electronic counter and a pressure gauge. According to the pipe joint pressure-resisting fatigue testing device, detection efficiency and precision are both high; the structure is simple,operation is convenient, the cost is low, manpower and material resources are saved, the work process is safe and reliable, and repeatability is high.

Description

technical field [0001] The invention belongs to the field of performance detection experimental devices, in particular to a pipe joint pressure fatigue test device. Background technique [0002] Pipe joints are parts that connect pipelines or install pipelines on hydraulic components in hydraulic systems. This is a general term for connectors that can be assembled and disassembled in fluid passages, mainly including: welded, ferrule type and expansion type. [0003] With the increasing application of various hoses and pipeline connectors in the industrial field, the testing requirements for the compressive strength and fatigue life of pipelines are becoming more and more stringent. However, the current testing and testing equipment is mainly based on the valve-controlled pressure cycle. The hydraulic reversing valve is expensive, has a short service life, is sensitive to oil pollution, and has a complicated drive. It cannot meet the requirements of high cycle pressure times...

AI Technical Summary

Problems solved by technology

However, the testing and testing equipment currently in use is mainly based on valve-controlled pressure circulation. The hydraulic reversing valve is expensive, has a short service life, is sensitive to oil pollution, and has complex drives. It cannot meet the requirements of high cycle pressure times in the same environment. Makes the test setup complex, cost prohibitive, pressure cycling too slow and inefficient

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