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Analysis of the causes of serious pressure drop and short service life of flexible energy storage devices?
Published Time:
2024-11-15 17:24
Category:
Current affairs news bulletin
Analysis of the reasons for serious pressure drop and short service life of bladder accumulators? The composition of a bladder accumulator is simple, mainly consisting of the oil around the bladder and the gas part with a gas seal. During operation, the oil should be connected to the oil circuit. Once the pressure rises, the oil will enter the accumulator, and the gas will be compressed until the pressure in the system pipeline does not rise.
Once the pressure in the pipeline drops, the compressed air will expand, thereby pressing the oil back into the circuit. So what causes the serious pressure drop? And what causes the service life to be greatly shortened?
1. When the pressure drops seriously, frequent recharging is required.
The bladder inflation valve generally adopts a one-way valve form, and often relies on the sealing cone surface to achieve the sealing effect. If the accumulator is subjected to large vibrations during operation, it is easy to cause the valve core to loosen, resulting in poor sealing of the cone surface and causing air leakage.
Once the cone surface sealing is poor and air leakage occurs, how can it be remedied? A rubber gasket can be placed inside the inflation valve cover, or the sealing cone surface can be ground to make it fit tightly.
In addition, the loosening of the nut at the top of the valve core after long-term use, or the breakage or leakage of the spring will cause a pressure drop. This requires re-tightening the nut.
2. Short service life
The service life of the bladder is directly related to the service life of the bladder accumulator. Many factors affect the service life of the bladder, such as the working medium used is not compatible with the material of the bladder, impurities are mixed into the bladder, the nominal capacity is not matched, the reciprocating frequency exceeds the specified use when used for energy storage, improper installation, unreasonable piping design, etc.
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Analysis of the reasons for serious pressure drop and short service life of bladder accumulators? The structure of a bladder accumulator is simple, mainly consisting of the oil around the bladder and the gas part with a gas seal. During operation, the oil should be connected to the oil circuit. Once the pressure rises, the oil will enter the accumulator, and the gas will be compressed until the pressure in the system pipeline stops rising.
How to reduce failures when the accumulator malfunctions?
If the accumulator malfunctions, it will directly affect its performance, and may even cause abnormal pressure and system failure. More attention should be paid to it during daily use, and measures should be taken to reduce the risk. So, how to reduce the failure of the accumulator? The following is an introduction to this problem.
Accumulators are interesting components in hydraulic systems, similar to capacitors in circuits and springs in mechanics. They are important energy storage components and can be used in hybrid power systems, shock absorbers, pressure stabilization systems (sometimes flow stabilization), and the simulation of impact through instantaneous energy release, among other clever applications.
1. Bellows typically have a shorter lifespan (compared to piston-type) and there is significant quality variation between brands; 2. Many factors contribute to shortened bellows lifespan and rupture, including inherent quality variations in the bellows themselves, improper operation during bellows assembly (such as failure to lubricate with fluid beforehand), improper pre-inflation procedures (such as failure to inflate slowly), pre-inflation pressure calculation errors, oil port flow rates approaching or exceeding 7 m/s, single reciprocation times approaching or less than 10 seconds when used for energy storage, bellows colliding with the check valve during operation, large temperature fluctuations (including large seasonal temperature differences), prolonged lateral vibration and shaking, fluid corrosion, inertial impact from small solid impurities in the medium, etc.;
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