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Energy storage hydraulic control system with reliable energy monitoring
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Energy storage high-flow hydraulic forming system
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High-precision digital servo synchronous actuation system
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Energy storage high-flow electro-hydraulic servo test system
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Energy storage, large flow compensation and balance hydraulic control system
- High-frequency fatigue testing system
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Energy storage hydraulic control system with reliable energy monitoring
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Hydraulic Control System for the Power Source of the Blast Furnace Accumulator
Published Time:
2024-11-05 17:32
Category:
Solution
Energy‑storage hydraulically controlled system with reliable energy monitoring
Hydro-controlled system of electric furnace energy storage device power source
Hydraulic control system for the power source of a blast furnace accumulator
The ironmaking blast furnace hydraulic control system serves as the core power and control hub of the blast furnace’s mechanical equipment, providing high‑pressure, stable hydraulic power for top‑of‑furnace burden distribution, front‑furnace tapping operations—including clay guns, taphole openers, and slag skimmers—and valve switching, thereby ensuring safe, continuous, and efficient blast furnace operation.
1. Main Components of the System
- Hydraulic pump station: Provides the power source and includes the main oil pump, motor, oil tank, and cooling/heating system.
- Severin piston accumulator unit: Provides pressure stabilization, pressure maintenance, and emergency energy storage, meeting the demands of sudden high‑flow conditions or power‑outage protection.
- Control valve assembly: integrates directional, pressure, and flow valves to precisely control the actuator’s motion.
- Actuating elements: various hydraulic cylinders and hydraulic motors that drive the rotation of the furnace top chute or the compaction of the mud gun.
- PLC Electrical Control System: Enables automated logic control and real-time condition monitoring.
2. Core Application Areas
- Blast furnace top system: It drives the rotation and tilt-angle adjustment of the bellless burden chute, demanding extremely high positioning accuracy.
- Iron‑tapping area: The equipment—such as the tapping‑hole opener for drilling and the clay‑gun for sealing the tapping hole—operates in an environment characterized by high temperatures, dust, and severe impact.
- Hot blast stove and gas system: controls the rapid switching of large-diameter valves, such as the raw gas shut-off valve and the combustion valve.
3. Common Technical Requirements
- High reliability: 7×24 Continuous operation for hours, with critical components equipped with dual circuits or emergency manual controls. / Accumulator standby function.
- Contamination resistance: At the blast furnace site, dust levels are high and temperatures are elevated; the lubricant must be regularly filtered and cooled to prevent valve sticking.
- Precise pressure retention: Equipment such as the tapping gun requires excellent pressure‑retention performance during the pressing phase to prevent iron leakage at the taphole.
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What are the causes of severe pressure drop and shortened service life in bladder-type accumulators?
What are the causes of severe pressure drop and short service life in bladder-type accumulators? The structure of a bladder-type accumulator is quite simple, consisting mainly of an oil chamber surrounding the bladder and a gas chamber equipped with a gas‑tight seal. During operation, the hydraulic fluid must be connected to the hydraulic circuit; when the system pressure rises, the fluid flows into the accumulator, compressing the gas until the pressure in the system pipeline stabilizes.
How can we reduce failures when an accumulator malfunctions?
If an accumulator malfunctions, its performance will be directly affected, potentially leading to abnormal pressures and system failure. Therefore, it should receive close attention during routine operation, and appropriate measures must be implemented to mitigate risks. So, how can we minimize failures when an accumulator malfunctions? The following sections address this issue.
Accumulators are intriguing components in hydraulic systems, analogous to capacitors in electrical circuits or springs in mechanical systems. As critical energy‑storage elements, they serve a variety of sophisticated functions, including hybrid‑power applications, shock absorption, pressure stabilization (and sometimes flow‑rate regulation), and the rapid release of stored energy to simulate impacts.
Is a bladder-type accumulator suitable for use in series with gas cylinders or cylinder banks?
1. Bladders typically have a shorter service life than piston‑type accumulators, and their quality varies significantly among different manufacturers. 2. Many factors can shorten a bladder’s lifespan and lead to rupture, including variations in the bladder’s intrinsic quality and durability; improper handling during assembly (e.g., failure to pre‑fill with fluid for lubrication); incorrect procedures during pre‑charging (e.g., insufficiently slow inflation); errors in calculating the pre‑charge pressure; oil‑port flow velocities approaching or exceeding 7 m/s; single‑stroke reciprocation times of 10 seconds or less when used for energy storage; collisions between the bladder and check valves during operation; large temperature fluctuations (including significant seasonal differences); prolonged lateral vibration; fluid‑induced corrosion; and inertial impacts from minute solid contaminants in the working medium, among others.
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