HYDAC accumulator SB330-4A1/112A9-330A

HYDAC accumulators SB330-4A1/112A9-330A are in stock. These HYDAC accumulators are sourced directly from the German manufacturer, HYDAC, offering first-hand prices. Steel mills have high demand, and a Tianjin steel mill recently successfully placed a futures order for HYDAC accumulators and HYDAC pressure sensors.

HYDAC SB series bladder accumulator introduction: Standard bladder HYDAC accumulators, nominal volume: 0.5 to 200 liters, allowable working pressure: 330 to 690 bar, allowable working temperature: -10 to +80 degrees Celsius, working medium: hydraulic oil, mineral oil, fire-resistant oil, water, emulsion, fuel.

HYDAC accumulator classification: HYDAC accumulators can be classified by loading method into spring type, piston type, and gas type. Spring type. HYDAC accumulators rely on compressing springs to convert excess pressure energy in the hydraulic system into spring potential energy for storage, releasing it when needed.

They have a simple structure and low cost.

However, due to the limited extension and contraction of the spring, and its insensitivity to pressure changes, as well as its poor vibration damping function, it is only suitable for small-capacity, low-pressure systems (P≦1.0～1.2MPa) or as a buffer device.

Piston-type HYDAC accumulators convert pressure energy in the hydraulic system into gravitational potential energy by lifting a mass loaded on a sealed piston. They have a simple structure and stable pressure.

Disadvantages include significant installation limitations (vertical installation is the only option), difficulty in sealing, and high inertia of the mass, making them insensitive. These accumulators are only used for temporary energy storage. These two types of HYDAC accumulators are rarely used due to their limitations.

However, it is worth noting that some research departments have made structural improvements to these two types of accumulators from an economic perspective, overcoming their shortcomings to some extent. accumulator have been increased, while costs have been reduced.

The gas-type HYDAC accumulator is based on Boyle's Law (PVn = K = constant), converting energy through gas compression. During operation, gas is first charged to a predetermined pressure.

When the system pressure exceeds the accumulator's internal pressure, the oil compresses the gas, converting the oil's pressure into the gas's internal energy.

When the system pressure is lower than the HYDAC accumulator's internal pressure, the oil in the HYDAC flows to the external system under the pressure of the gas, releasing energy. Selecting an appropriate charging pressure is crucial for this type of accumulator.

These HYDAC accumulators can be classified structurally into pipeline vibration dampers, direct gas-liquid contact types, piston types, diaphragm types, and bladder types, among others. HYDAC accumulator SB330-4A1/112A9-330A available.

HYDAC accumulator parameter selection: P0 = Pre-charge pressure; V0 = Effective gas volume; P1 = Minimum operating pressure; V1 = Gas volume at P1; Polytropic index.

① State before use (nitrogen and liquid not entered). ② The capsule is pre-charged with nitrogen, and the oil valve is closed to prevent the capsule from detaching.

③ When the minimum operating pressure is reached, a small amount of oil (approximately 10% of the accumulator's nominal capacity) should remain between the capsule and the oil valve to prevent the capsule from impacting the valve during each expansion, causing damage. ④ The accumulator is at its maximum operating pressure.

The volume change between the minimum and maximum operating pressures is equivalent to the effective oil volume. △V = V1 — V2 3. Selection of Precharge Pressure The NXQ series bladder accumulators allow for a volumetric utilization rate of 75% of the actual gas capacity.

Therefore, the ratio between the precharge nitrogen pressure and the maximum operating pressure is limited to 1:4, and the precharge pressure must not exceed 90% of the minimum system pressure. Adhering to this specification ensures a longer bladder life. Other compression ratios can be achieved using special measures.

To fully utilize the accumulator's capacity, the following values are recommended.

Energy storage: P0tmax = 0.9 × P1 Shock absorption: P0tmax = (0.6～0.9) × Pm (Pm = average working pressure of free flow) Pulsation absorption: P0tmax = 0.6 × Pm (Pm = average working pressure) or P0tmax = 0.8 × P1 (at various working pressures).

Limit value of pre-charge pressure: P0 ≤ 0.9 × P1, allowable compression ratio is P2:P0 ≤ 4:1 SB330-32AL／112A9-330A HYDAC sensors from Germany, specializing in the sale of HYDAC pressure switches and sensors.

HYDAC (Hydac) is a world-renowned manufacturer of components and devices for fluid filtration, hydraulic control, and electronic measurement, producing filters, accumulators, hydraulic valves, electronic products, pipe clamps, electromagnets, hydraulic system assemblies, and other products.

HYDAC products have a wide range of applications, particularly in metallurgy, automotive, power, chemical, construction machinery, papermaking, shipbuilding, and machine tool manufacturing. HYDAC has branches or subsidiaries in more than 30 countries and regions, with manufacturing bases in the United States, France, India, the United Kingdom, Switzerland, Italy, and China.

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