Hydraulic fatigue test system for pressure container

A fatigue test and pressure vessel technology, applied in presses, using repetitive force/pulse force to test the strength of materials, punching machines, etc., can solve the problems of easy wear, damage and complex control of solenoid valves and hydraulic components Achieving, low-cost effects

Inactive Publication Date: 2005-03-02
DALIAN UNIV OF TECH
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Problems solved by technology

In the past, the test devices used for fatigue tests on pressure vessels were generally built according to the test procedures recommended by GB / T9252. Early damage, and the high-pressure fluid from the inside of the container is not controlled during pressure relief and reversing, resulting in great impact and noise
Although the proportional electromagnetic overflow valve is used to improve the hydraulic flow, the pressure relief speed can be controlled, but the control is complicated, and the problem that the electromagnetic valve is easy to wear still exists.

Method used

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  • Hydraulic fatigue test system for pressure container

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Embodiment Construction

[0014] A fatigue test system for a pressure vessel, which comprises: an oil pump 1 driven by a motor connected by pipelines, a solenoid valve 2, an electromagnetic overflow valve 3, a one-way throttle valve 4, a high-pressure filter device 5, and a water-cooled oil cooling system. 6, the oil return filter device 7 and the oil tank 8 are composed of the oil circuit pressurization, pressure maintenance and pressure relief device, and the electric contact pressure gauge 9, temperature sensor 10, pressure sensor for pressure vessel and hydraulic oil temperature measurement and control 11. A measurement control system composed of a computer 12 and a controller 13.

[0015] The signals from the pressure sensor 11, the electric contact pressure gauge 12, and the temperature sensor 10 are all connected to the computer through wires. After inputting necessary data and relevant information to the computer 12 as required, the controller 13 starts the motor according to the requirements of...

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Abstract

A pressure vessel fatigue test system belongs to pressure vessel test technical field, comprising oil circuit pressure device, pressurizer, weight relieving motion, and measuring and control system. The oil circuit pressure device, pressurizer, weight relieving motion consists of pump linked by pipeline and oil pump driven by electric machinery, solenoid valve, overflow valve, water cooled oil cooler, back oil filtration device, oil tank and pipelines linked with them, the measuring and control system is consisted of electric contact pressure gauge, temperature sensor, pressure sensor, computer, controller for measurement and control temperature of pressure vessel, hydraulic oil, one-way throttle valve and high pressure filtration device are fitted with pipeline linked with solenoid valve and the container, stabilization tank is fitted with oil return pipe linked to solenoid valve and oil tank. The invention is suitable for fatigue test of pressure vessel containing impurity within and fairly high pressure needed and reconstruction to present pressure vessel fatigue test device.

Description

technical field [0001] The invention belongs to the technical field of pressure vessel testing, and relates to hydraulic fatigue test equipment for pressure vessels. Background technique [0002] For pressure vessels subjected to alternating loads, in order to ensure their performance, it is necessary to carry out a fatigue test on the pressure vessel, that is, pressurize and depressurize the vessel repeatedly according to the specified pressure until the number of repeated pressurization and depressurization reaches a certain number So far, this has been used as one of the criteria for the safe use of pressure vessels. In the past, the test devices used for fatigue tests on pressure vessels were generally constructed according to the test procedures recommended by GB / T9252. It is damaged early, and the high-pressure fluid from the inside of the container is not controlled during pressure relief and reversing, resulting in great impact and noise. Although the proportional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B1/00G01N3/36
Inventor 由宏新喻健良丁信伟李岳王淑兰温殿江毕明树
Owner DALIAN UNIV OF TECH
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