Bladder Accumulator Station

I. Product Introduction

The bladder accumulator station is an integrated energy storage equipment that combines the accumulator cylinder, energy storage bladder, control valve group, and fixed bracket into one unit. It is widely used in centralized energy storage operations for hydraulic and pneumatic systems. The equipment relies on an internal bladder to separate nitrogen from the hydraulic medium, completing system energy storage, pressure compensation, pipeline buffering, and pressure stabilization and unloading operations. The matching energy storage bladder features excellent material properties, including oil resistance, acid and alkali resistance, bending resistance, high strength, and long service life. The overall unit complies with HG/233192 domestic standards and ASME international standards, suitable for multi-industry hydraulic centralized unit matching applications.

Working principle: Nitrogen is pre-charged into the bladder. When system oil pressure rises, the hydraulic medium squeezes the bladder to compress nitrogen, storing surplus hydraulic energy. When system oil pressure drops or load changes occur, nitrogen expands to release energy, supplementing pipeline pressure, counteracting pipeline pressure fluctuations, and protecting the entire hydraulic unit for stable operation.

II. Basic Model Parameters

1. Model Specifications

(1) Bladder capacity: 0.4~100L

(2) Bladder length: 74~1880mm

(3) Bladder structure length: Type A, Type AB

2. Technical Parameters

Nominal pressure within station: 31.5MPa

Compatible media: Mineral oil, water-glycol, emulsion

Media temperature: -15°C to +65°C

3. Integrated Valve Parameters

Integrated charging valve: QXF type charging valve, nominal diameter 4mm, 5mm, available in domestic and ASME versions

Integrated shut-off valve: XJF type accumulator shut-off valve, nominal diameter 10/20/32mm, discharge port diameter 1mm

Integrated safety valve: AQF type safety ball valve, combining safety, shut-off, and unloading functions for full station protection

III. Product Features

1. Integrated design with valves, tank, and bracket assembled as one unit, ready for use after on-site pipeline connection, convenient installation;

2.Matching rubber bladder with stable physical and chemical properties, compatible with multiple types of hydraulic media, capable of long-term reciprocating pressure deformation;

3. Complete set of valves within the station, independently completing nitrogen charging, shut-off, pressure relief, and overload protection full-process control;

4. Adaptable to multiple installation forms, can be installed vertically, horizontally, or at an angle, suitable for various installation positions in equipment rooms;

5. Stable pressure performance, overall nominal pressure 31.5MPa, suitable for industrial high-pressure hydraulic system conditions;

6. Dual-standard compliant production, suitable for both domestic conventional hydraulic projects and foreign trade complete equipment projects.

IV. Product Advantages

1. Intensive operation and maintenance: One-piece station construction, centralized control of multi-circuit oil pressure, reducing the cost of scatter distributed accumulator installation;

2. Convenient maintenance: Bladder and valves can be independently disassembled and replaced without dismantling the entire unit, with low maintenance workload;

3. Wide adaptability: Compatible with mineral oil, water-glycol, and emulsion media, wide temperature range for indoor and outdoor operating environments;

4. Complete supporting facilities: Original factory matching charging tools and nitrogen charging equipment, one-stop completion of unit nitrogen charging maintenance;

5. Stable operation: Good buffering and noise reduction effect, reducing hydraulic impact, lowering downstream hydraulic component wear.

V. Application Scenarios

1. Industrial centralized hydraulic station: Machine tool clusters, stamping workshop centralized oil circuit energy storage and pressure stabilization, balancing multi-circuit equipment oil pressure;

2. Fire protection pressure stabilization system: Pump room complete energy storage unit, emergency pressure and stabilization, ensuring constant water supply pressure;

3. Construction machinery matching: Large vehicle-mounted, engineering complete hydraulic units, centralized energy storage buffering load impact;

4. Chemical fluid equipment: Corrosion-resistant hydraulic units, suitable for weak acid and alkali media conditions, system energy storage and unloading;

5. Shipbuilding, automation complete equipment: Closed hydraulic system energy storage, suitable for vibration and alternating condition use.

VI. Installation and Use Specifications

1. Installation Position

The bladder accumulator station can be installed vertically, horizontally, or at an angle. When selecting angled or vertical installation positions, the oil valve must be placed at the bottom.

2. Fixing Method

For individual accumulators with capacity below 1L, they can be directly installed on the pipeline; for conditions with strong vibration or capacity above 1L, it is recommended to use our factory clamps and complete fixing components for reinforced installation.

3. Nitrogen Charging Requirements

Before unit operation, nitrogen must be charged into the bladder. For conventional pressure charging, use our factory CQ type charging tool; when the gas source pressure cannot meet high-pressure charging requirements, use our factory CDZ type nitrogen booster charging vehicle.

4. Usage Precautions

(1) The accumulator cylinder shell must not be welded or subjected to any mechanical processing;

(2) Only nitrogen can be charged into the bladder, oxygen, flammable and corrosive gases must not be used;

(3) The complete accumulator station must be connected to a hydraulic system equipped with a relief valve or safety valve for use.

VII. Common FAQ

Q1: How to select between Type A and Type AB bladders?

A: The two have different structural lengths. Type A is selected for vertical stable conditions, and Type AB is selected for horizontal and high-frequency vibration conditions.

Q2: Can the accumulator station be modified with custom interfaces?

A: The cylinder and valve body structure must not be privately modified. If interface size changes are needed, please contact the manufacturer for custom processing.

Q3: How to handle bladder leakage within the station?

A: After pressure relief and power disconnection, simply replace the same specification bladder without dismantling the entire unit.