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High-pressure hydraulically controlled system with a piston accumulator for the inlet valve

2026-08-15

The manufacturing and testing of the ultra‑high‑flow anti‑backflow valve have been successfully completed.

SCHWERLL has successfully completed the manufacturing of CNOOC’s super‑flow anti‑recoil valves and the associated super‑flow testing. The products have passed all performance verification tests and flow‑rate assessments, and have obtained certification from CCS, the classification society. Anti-Recoil Valve (AVR), also referred to in the industry as an anti‑backflow valve.

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2026-08-15

SCHWERLL has successfully developed and built a mini-sized, lightweight, mobile nitrogen booster unit.

To meet the demands of operating conditions in vehicles, marine vessels, aerospace, and mobile applications—particularly where equipment weight or available installation space is constrained—SCHWERLL began, in 2025, developing miniaturized nitrogen‑boosting units based on its established standard designs. These compact units have been successfully deployed in nitrogen‑boosting systems for marine vessels and heavy‑duty vehicles.

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2024-12-31

Alternating Stress High-Frequency Fatigue Testing System

In applications subjected to cyclic stresses, the safety and failure life of metallic or other material components under operating conditions depend on the number of stress cycles. According to the S–N curves for different materials, a component’s fatigue life is governed by the pressure differential and the number of load cycles experienced in a given service environment: higher pressure differentials result in shorter fatigue lives. Therefore, for products operating under fatigue‑dominated conditions, a scientifically sound approach is to conduct fatigue testing under the actual service‑condition stress cycles. Such tests provide the basis for predicting service life and enable the establishment of an appropriate service life cycle for the product.

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2024-12-31

Energy-Storage High-Flow Ejection Hydraulically Controlled Test System

When a load requires an instantaneous burst of force for ejection testing to verify its characteristics, an ejection test must be conducted, necessitating the application of either lateral or longitudinal thrust. An electro‑hydraulic servo system equipped with a high‑flow accumulator bank capable of delivering transient, high‑rate flow is an excellent solution. Depending on the load’s requirements for magnitude and rate of applied force, the test system can regulate flow to achieve constant‑speed, constant‑acceleration, and constant‑flow output profiles. For applications in this domain, the key lies in the reliable, safe, and rapid provision and distribution of stored energy; the integrated servo and local control technologies underscore Schwerll’s leading expertise in accumulator‑based flow‑control and distribution.

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2024-12-31

Energy-Storage High-Flow Pulse Impact Test System

When the test specimen or load requires instantaneous impact energy and demands high‑speed response on the millisecond or even nanosecond timescale, piston accumulators—either with or without an energy‑monitoring system—combined with Sevier high‑flow servo control valve assemblies can serve as the power source for delivering this transient impact energy. Depending on the test objectives or the specific motion characteristics of the load, the following centralized energy‑supply configurations are typically employed:

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2024-12-31

Constant-Flow Energy Storage Power Source Test System

When the test subject or load requires a constant flow rate, an accumulator system capable of delivering high instantaneous flow is employed, with its transient output flow precisely controlled. By monitoring the liquid level within the accumulator and performing specialized fluid‑mechanics‑based compensation calculations—either to determine the instantaneous flow rate or by comparing it with the flow signal acquired from the drain line—a stable and accurate flow‑control reference is generated. This reference is then fed into the Xiwel full‑range flow‑servo control system, enabling highly precise, steady‑state flow delivery to the load or test subject.

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2024-12-30

Hydraulically Controlled System for a Wave-Compensated Dual-Piston Accumulator

For operations conducted on or beneath the water’s surface, wave‑compensation solutions are required, which can be categorized into active systems, passive systems, and hybrid combinations of both: Active wave compensation: employs secondary‑control hydraulic winches, variable‑frequency electric winches, or hydraulic cylinders. The latter can also be used for passive wave compensation or as part of a hybrid active–passive system. Constant‑tension devices and passive and/or active wave‑compensation systems are installed to counteract relative motion between vessels and fixed structures, such as wellheads or other offshore installations.

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2024-12-30

Underwater ROV‑Assisted Rapid Intervention Energy Storage System

The auxiliary high-pressure piston accumulator system enables ROV (remotely operated vehicle) intervention systems to meet the regulatory requirement of a minimum shut-down time of 45 seconds at the maximum allowable pressure. As requirements for controlling secondary blowout preventer stacks become increasingly stringent, users can rely on our proven, code‑compliant ROV intervention approach, employing the SCHWERLL auxiliary rapid‑intervention accumulator system.

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2024-12-30

Accumulator-powered source for the leveling system

Offshore platforms experience oscillations due to wind, waves, and other environmental factors. Similarly, during the installation of offshore wind‑energy systems, ships, and large equipment, external influences, uneven load resistance, or inconsistent mechanical transmission accuracy can all necessitate leveling adjustments. By employing accumulators to buffer, absorb, and release energy, pressure fluctuations can be balanced; further, real‑time servo‑controlled flow‑rate feedback enables highly precise leveling performance.

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Schwerll Fluid Control (Beijing) Co., Ltd.

Mobile: 0086 18201267391

Email: schwerlltec@schwerll.com.cn

Address: Building 39B, Floor 1, No. 16, Huanke Zhong Road, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing

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