Parameter self-adapting and regulation leather bag type hydraulic accumulator

Abstract

The invention discloses a parameter adaptive adjustment bag type accumulator. A second air cavity (41) of a parameter variable accumulator device is communicated with a first air cavity (11) of an online adjustment accumulator through a high-pressure electromagnetic valve (46) and a high-pressure gas pipeline (7), and a filling valve cover (36) of the parameter variable accumulator device is communicated with a hydraulic system through a filling valve cover (35). The parameter adaptive adjustment bag type accumulator adopts a valve control hydraulic cylinder to control the air cavity volume and the gas pressure, and a DSP control center to calculate proper parameters so as to achieve automatic adjustment and overcome the defects that the prior accumulator parameter selection is inaccurate and the adjustment is impossible once the accumulator parameter is determined. Because an electromagnetic coil is adopted to adjust the size of the magnetic field in a magnetorheological fluid cavity and a step motor is adopted to control the size of the oil-passing area of an oil inlet, the damping coefficient of the accumulator can be changed dynamically, thus not only the requirement on the speedability and the stability of the compression shock and pulsation of an absorption system is met, but also the requirement on various functions of the same accumulator is met.

Description

technical field [0001] The present invention relates to a variable-parameter bladder-type hydraulic energy storage element based on DSP control, in particular to a device capable of changing inflation pressure, volume, working oil damping, and oil inlet damping on-line, so as to improve system performance under different working conditions. Adaptive adjustment of the parameters of the bladder hydraulic accumulator. Background technique [0002] The bladder accumulator is an important auxiliary component in the hydraulic system. It mainly plays the role of storing energy, eliminating pressure pulsation and absorbing pressure shock in the system. Since the theoretical formulas currently used in the selection of accumulators were formed in the 1960s and 1970s, and the research methods are relatively backward, these formulas are all empirical formulas, and the accumulator calculated based on this The parameters are usually inaccurate and need to be adjusted many times in actual...

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Problems solved by technology

[0004] At present, most of these patents focus on the research on the shell structure of the piston accumulator, and the research and application on the adjustment of the shell of the bladder accumulator and its inlet damping parameters are still blank

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