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Advantages of bladder accumulator

Date: 2018-05-30 Author: Asahi hydraulic

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Advantages of bladder accumulator:

1. The skin capsule (capsule) has small inertia and sensitive response, and is suitable for eliminating pulsation;

2. The bladder separates the oil and gas, and the oil and gas will not mix (without rupture);

3. Easy maintenance, less auxiliary equipment, easy installation and convenient inflation.

Disadvantages:

1. The service life of the skin bag is usually not longer than the service life of the (piston type) seal, and the quality of the skin bags of different brands is very different;

2. There are many factors that lead to the rupture of the skin capsule, including the difference in the quality and life of the skin capsule, the improper operation of each step of the skin assembly, the improper operation of each step of the pre-inflation, the calculation error of the pre-inflation pressure, large temperature changes (including large seasonal temperature differences), and long-term lateral Vibration shaking, fluid corrosion, inertia impact of tiny solid impurities in the medium, etc .;

3. When the skin ruptures, it may lead to the sudden failure of the accumulator, and a large amount of mixed oil and gas may cause a system accident;

4. The skin cannot be made too large, otherwise it will affect the life of the skin. The ASME standard is generally a maximum of 60 liters, and most of Europe is 50 liters.

5. The working pressure should not be too high, the highest domestic (3 times or less safety factor) is generally 31.5Mpa, Tuobu skin-type accumulator (4 times safety factor) is 51.8Mpa;

6. Due to design and processing quality, when the oil is quickly released, the bacteria-type valve of many brands of capsule accumulators will be closed in advance, causing the accumulator to suddenly fail.

7. Because the material of the bladder is rubber, the strength is not high, and it cannot withstand large pressure fluctuations. Or cylinder set.

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