Understanding Hydraulic Accumulators
What is a Hydraulic Accumulator?
A hydraulic accumulator is an important device that contains pressurized hydraulic fluid under pressure because of gas, which is a reservoir of energy for hydraulic systems. It is a high-technology equipment that serves as a shock absorber between the hydraulic pump and system actuators, releasing power at once when demand is greater than the pump’s capability. In hydraulic breakers, accumulators are responsible for controlling stable pressure, shock-load absorption, and compensation of system losses.
Major Components and Function
There are three major components of the hydraulic accumulator: a pressure vessel, a separator (bladder, piston, or diaphragm), and a gas chamber, which is usually charged with nitrogen. Hydraulic fluid compresses the nitrogen gas while filling the accumulator and stores potential energy. At the time of usage, stored energy is released immediately when there is insufficient system pressure, supplying constant power to the hydraulic breaker.
Types of Accumulators Used in Breakers
METDEEM Hydraulic breakers use bladder-type and piston-type accumulators. Bladder accumulators are able to provide instant response and are used in high-frequency applications, whereas piston accumulators have high flow rates and are used in heavy-duty applications. Those Hydraulic breakers with an “A” marked on them signify with an accumulator, which is a shock absorber that minimizes damage.
Core Functions in Hydraulic Breakers
Energy Storage for Consistent Power
Hydraulic accumulators store energy during periods of low demand and release it on the spot during the operation peak. The feature of energy storage in this way enables breakers to deliver a constant striking force even if the hydraulic pump of the excavator is unable to supply instantaneous demand. It leads to superior breaking performance and reduced stress on the primary hydraulic system.
Shock Absorption to Minimize Vibration
Shock absorption is one of the most important roles played by accumulators in hydraulic breakers. During hard material breaking, massive shock waves propagate back through the hydraulic circuit. Accumulators dissipate the shock loads and eliminate damage to fine parts, and cut vibration transmitted to the excavator and operator significantly.
Leakage Compensation for System Stability
Hydraulic circuits necessarily experience some internal leakage with time. Accumulators compensate for these losses to maintain system pressure and hence deliver uniform breaker performance during extended operating periods. This compensation prevents performance degradation and maintains the optimum striking efficiency.
Safety and Efficiency Benefits
Enhancing Operator Safety
Accumulators also play an important role in ensuring operator safety through vibration and noise reduction during the breaker operating process. The shock absorption eliminates the jarring shock transferred by the excavator, thereby making the working process smooth and comfortable as well as minimizing operator fatigue. The pressure supply stabilization also eliminates sudden system collapse that may result in safety hazards.
Enhancing Equipment Longevity
By dissipating shock loads and applying continuous pressure, accumulators safeguard hydraulic equipment from premature breakdown and wear. Such protection extends the life of the seal, valve, and other critical system components at lower costs and downtime. Our products provide more rapid operation and higher impact force at the same flow rate and pressure. This improves efficiency, minimizes wear and tear, and shortens the work cycle, eventually decreasing operating cost.
Increasing Operational Efficiency
Hydraulic accumulators make it possible to use breakers more frequently and provide more uniform power output. Better performance means faster completion of jobs, improved productivity, and improved fuel efficiency for the machine overall. The consistent supply of power also minimizes the number of incomplete breaks that need more strikes.
Why METDEEM Uses Accumulators
METDEEM’s Engineering Approach
We add accumulators to our hydraulic breaker design in METDEEM as part of our focus on providing more performance and reliability. We engineer our hydraulic breakers out of high-strength alloy steel with advanced hydraulic system engineering for the main objective of gaining intense impact force, accelerated penetration, and high efficiency. Our use of accumulators falls within our engineering practice of providing maximum equipment performance while attaining long-term durability.
Performance Benefits with METDEEM Systems
Our accumulator-stocked models, like the DM190 Hydraulic breaker series and DM121 HB30G Hydraulic breaker, reflect the advantage of superior accumulator integration in performance. DM81A features 400-800 bpm with an accumulator, reflecting how the accumulator increases the impact frequency and overall crushing efficiency.
Reliability powered by METDEEM Technology
By precise heat treatment and rigorous quality control processes, our chisels and breakers are fatigue-resistant, wear-resistant, and fracture-resistant, too, allowing for considerable savings in operating and replacement costs. Our accumulator systems are tested to be able to achieve the stringent demands of construction work, mining, and demolition operations.
Selecting the Right Accumulator
Hydraulic Breaker Size and Application Matching
The size of the hydraulic breaker, its operating pressure, flow rate requirements, and application specifications determine the choice of accumulator. Light type excavators (e.g., those equipped with a DM40 hydraulic breaker suitable for 4.5-7 ton excavators) generally do not have accumulators. Medium or heavy type excavators (e.g., those equipped with a DM210 hydraulic breaker suitable for 65-70 ton excavators) do, however, are equipped with accumulators. When selecting accumulator capacity, the work cycle, material hardness, and environmental conditions must also be considered.
METDEEM Hydraulic Breakers compatibility
This product is designed to work with leading local and foreign excavator brands, including CAT®, Komatsu®, Volvo®, Sany®, and XCMG®, in order to satisfy a variety of applications such as mining, construction, municipal engineering, and metallurgy. Our engineering staff can assist with correct accumulator sizing and integration in order to provide maximum effectiveness with your particular excavator model.
Maintenance and Care Tips
Regular Inspection Guidelines
Normal accumulator upkeep to maximize performance. There must be a monthly visual inspection to check external damage, leakage, and mounting. Quarterly pressure testing should be done to check gas pre-charge pressure, normally between 80-90% of the minimum system pressure. Annual thorough inspections must include bladder or piston check and replacement as needed.
Indications of Accumulator Wear or Failure
Critical warning indicators are diminished breaker performance, augmented system pressure fluctuation, visible oil leakage at the accumulator, strange noise upon operation, and diminished impact frequency. When the system has to be re-pressurized constantly or shows erratic operation, accumulator replacement can become mandatory.
Thực tiễn tốt nhất
- Keep proper gas pre-charge pressures.
- Keep hydraulic fluid clean and replace filters periodically.
- Prevent system pressure spikes above design levels.
- Place equipment in environment-controlled temperature conditions.
Câu hỏi thường gặp
Q: How often should hydraulic accumulators be serviced?
A: Monthly visual check, quarterly pressure check, and annual full service with bladder or seal change as the situation demands.
Q: Is it possible to retrofit an accumulator to my current METDEEM hydraulic breaker?
A: Depending on the model of your breaker, retrofit might be possible. Contact our team at Metdeem108@126.com or +86-15318660928 for compatibility testing and installation procedures.
Q: What if there is a failure of an accumulator during operation?
A: Failure of the accumulator will generally be accompanied by decreased performance, excessive vibration, and possible damage to the rest of the hydraulic system. Shut down, and a professional inspection must be done immediately.
Q: What are the signs my hydraulic breaker requires an upgraded accumulator?
A: Upgrade if you experience fluctuating performance, excessive vibration, excessive rate of component failure, or if your application requires frequent operation in severe conditions.
