HYDAC skin bag accumulator SB330-4A1/112U-330A original

HYDAC skin bag accumulator SB330-4A1/112U-330A original

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Spring loaded energy storage devices use the compression energy of springs to store energy. They have a simple structure and are more sensitive to reactions than gravity based devices, but their volume is smaller and they are generally used in small capacity, low-pressure systems.

Energy storage devices can be divided into three categories: gravity loaded, spring loaded, and gas loaded.

1. Gravity loading type

Gravity loaded energy storage devices utilize the potential energy of heavy objects to store energy and are an ancient type of energy storage device. It can provide large capacity, constant pressure liquids, but its size is large and its response is slow. This type of accumulator is only used for fixed heavy-duty hydraulic equipment.

2. Spring loaded type

Spring loaded energy storage devices utilize the compression energy of springs to store energy. They have a simple structure and are more sensitive to reactions than gravity based devices, but have a smaller volume and are generally used in small capacity, low-pressure systems.

3. Gas loaded type

Gravity and spring type energy storage devices have limitations in application. These two types of energy storage devices are rarely used, and gas loaded energy storage devices are widely used.

The working principle of gas loaded accumulator is based on Boyle's law. When in use, first fill the accumulator with air or nitrogen at a predetermined pressure. When the pressure of the external system exceeds the pressure of the accumulator, the compressed oil gas is filled into the accumulator. When the pressure of the external system is lower than that of the accumulator, the oil in the accumulator flows to the external system under the action of the compressed gas.

According to the design requirements of the hydraulic system, there are safety valves on the accumulatorknowTwo types:
1: Inflatable safety valve.
2: Oil pressure safety valve.

The inflatable safety valve is mainly used to prevent the pressure of nitrogen inside the accumulator from increasing due to the influence of oil pressuretoo highFor example, a bladder type accumulator with an inflation pressure of 12MP and a system working pressure of 20MP, when the oil pressure fills the accumulatorSee you laterSqueeze the skin bag, and the pressure of the skin bag will increase, exceeding 12MP. At this time, the safety valve will follow the pressure value we have setthe WayStart releasing pressure, for example, if we set the safety valve to 14MP, once the pressure exceeds 14, it will release pressureGeneral outThe factory'seditionThe pressure of the safety valve is set at around 21MP.

Another type is the safety valve used in hydraulic circuits, which has oil inletglobe valve，overflow valveAnd there's also oil leakagehandleJointly composed. Its working principle is similar to that of an inflation safety valve,in order toTo protect the accumulator from exceeding our set pressure, we will use the aboveoverflow valveAdjust to the pressure we need, once the systempowerIf the pressure is too high, the overpressure part willoverflow valveOverflow, always maintain a safe pressure.

Hydraulic oil is an incompressible liquid, so it is impossible to accumulate pressure energy using hydraulic oil, and other media must be relied upon to convert and accumulate pressure energy.

For example, a bladder type inflatable accumulator developed using the compressibility of gas (nitrogen) is a device for accumulating hydraulic oil. The bladder type accumulator consists of an oil part and a gas part with an airtight seal, and the oil around the bladder is connected to the oil circuit.

When the pressure rises, the oil enters the accumulator and the gas is compressed until the system pipeline pressure no longer rises; When the pressure in the pipeline decreases, compressed air expands and hydraulic oil flows into the circuit, thereby slowing down the decrease in pipeline pressure.

HYDAC skin bag accumulator SB330-4A1/112U-330A originalCommon models：

1-liter accumulator SB330-1A1/112A9-330A; SB330-1A1/112U-330A；

Skin bag model 1L * 7/8-14UF/VG5NBR20/P460;

2.5-liter accumulator SB330-2.5A1/112A9-330A;SB330-2.5A1/112U-330A；

Skin bag model 2.5L * 7/8-14NFT/VG5NBR20/P460

4-liter accumulator SB330-4A1/112A9-330A; SB330-4A1/112U-330A；

Skin bag model 4L * 7/8-14UF/VG5NBR20/P460

6-liter accumulator SB330-6A1/112A9-330A; SB330-6A1/112U-330A；

Skin bag model 6L * 7/8-14UF/VG5NBR20/P460

10 liter accumulator SB330-10A1/112A9-330A; SB330-1A10/112U-330A；

Skin bag model 10L * 7/8-14UF/VG5NBR20/P460

13 liter accumulator SB330-13A1/112A9-330A; SB330-13A1/112U-330A；

Skin bag model 32L * 7/8-14UF/VG5NBR20/P460

20 liter accumulator SB330-20A1/112A9-330A; SB330-20A1/112U-330A；

Skin bag model 20L * 7/8-14UF/VG5NBR20/P460

24 liter accumulator SB330-24A1/112A9-330A; SB330-24A1/112U-330A；

Skin bag model 24L * 7/8-14UF/VG5NBR20/P460

32 liter accumulator SB330-32A1/112A9-330A; SB330-32A1/112U-330A；

Skin bag model 32L * 7/8-14UF/VG5NBR20/P460

50 liter accumulator SB330-50A1/112A9-330A; SB330-50A1/112U-330A；

Skin bag model 50L * M50X1.5/VG5NBR20/P460