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Series hydraulic pressure pulsation attenuator and attenuation method

A hydraulic pressure and pulsation attenuation technology, which is applied in fluid pressure actuation devices, fluid pressure actuation system components, physical quantity changers, etc., can solve the problem of large energy consumption, achieve small energy loss, wide frequency range, and fast response fast effect

Active Publication Date: 2016-11-09
XI AN JIAOTONG UNIV
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Problems solved by technology

However, this method of attenuating pressure fluctuations through overflow generation will consume a lot of energy in the high-pressure system

Method used

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  • Series hydraulic pressure pulsation attenuator and attenuation method
  • Series hydraulic pressure pulsation attenuator and attenuation method

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] The novel tandem hydraulic pressure pulsation attenuator of the present invention has a structure such as figure 1 As shown, it includes attenuator housing 1, fixing screw 2, shaft end baffle 3, connecting bolt 4, first seal ring 5, attenuator piston 6, stacked piezoelectric ceramics 7, gasket 8, second seal Ring 9, piston rod 10 and a control part, the control part includes a pressure transmitter 11, a signal processing circuit, an A / D converter, a single chip microcomputer, a D / A converter and a power amplifier circuit. The main body of the novel serial hydraulic pressure pulsation attenuator is composed of attenuator housing 1 , shaft end baffle 3 , attenuator piston 6 , stacked piezoelectric ceramics 7 , and piston rod 10 .

[0037] In the present invention, the attenuator housing 1 has an outlet and an inlet, and a pressure transmitter 11 is arra...

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Abstract

The invention discloses a series hydraulic pressure pulsation attenuator and an attenuation method. The series hydraulic pressure pulsation attenuator comprises a piston rod, a piston and an attenuator shell body; the piston rod is fixed to the attenuator shell body, one end of the piston rod is located in the attenuator shell body, and the other end of the piston rod penetrates out of the attenuator shell body; a through hole is formed in the piston rod in the axis direction and communicates with a follow-up oil line; the piston is located in the attenuator shell body, and a piezoelectric ceramic is arranged between the piston and the attenuator shell body and makes contact with the piston; the rigidity of the piezoelectric ceramic is changed by changing voltage applied to the two ends of the piezoelectric ceramic according to the magnitude of the pressure pulsation, and accordingly piston displacement is changed; and high-frequency change of the volume of the attenuator shell body and attenuation of the hydraulic pressure pulsation are achieved. According to the novel series hydraulic pressure pulsation attenuator, compared with a traditional hydraulic pressure pulsation attenuator, the oil line energy loss caused by the series hydraulic pressure pulsation attenuator is small, the bandwidth of the pressure pulsation playing an inhibition effect is increased, and the pressure pulsation in a high-pressure oil line can be inhibited.

Description

technical field [0001] The invention belongs to the field of pressure pulsation control of a hydraulic system, in particular to a serial hydraulic pressure pulsation attenuator and an attenuation method. Background technique [0002] Compared with other types of pumps, axial piston pumps have high output pressure and good reliability, and are more energy-saving, so they are widely used in fields such as aviation aircraft and heavy special equipment. It has become a consensus in the field of equipment manufacturing to improve system integration and reduce equipment volume. For the hydraulic system, if the working pressure of the system is increased from 21Mpa to 56Mpa, the volume of the system will be reduced by 40%, and the weight will be reduced by 30%. However, the increase in pressure will cause the pressure pulsation of the system to increase significantly. Excessive pressure pulsation will cause the increase of system vibration and noise, as well as the occurrence of ...

Claims

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Application Information

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IPC IPC(8): F16L55/05F15B5/00F15B21/00
CPCF15B5/00F15B21/008F16L55/05
Inventor 李小虎柳松玮李党超张燕飞李中平吴坚
Owner XI AN JIAOTONG UNIV
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