In the mechanical factory of Gansu University of Technology, we designed 13 hydraulic lifting platforms for the Chongqing Grand Hall. These lifts share a common hydraulic station, but each unit has its own independent valve station to control operations. Given the size and location of the lifting platforms, the hydraulic system plays a vital role in ensuring safe and efficient performance.
The design of the hydraulic system did not initially consider pipeline cleaning as part of the process. However, during the development phase, it became clear that neglecting this step could lead to long-term issues. Each lift requires a flow rate of 201 liters per minute, and if all pipelines were cleaned simultaneously, the cleaning pump would need a large displacement, significantly increasing costs and making the process impractical. Therefore, we re-evaluated the design to incorporate pipeline cleaning strategies that reduce expenses without compromising quality.
To address this, we adopted a modular approach. Each lifting platform is equipped with two shut-off valves at the entrance of its hydraulic system. During the cleaning process, only the shut-off valve for the specific platform being flushed is opened, while the others remain closed. This allows us to use a smaller displacement cleaning device to flush each section individually, avoiding the need for expensive high-capacity equipment and reducing overall costs.
Pipeline cleaning was divided into two main stages: pickling and oil circulation flushing. Before installation, the cold-drawn pipes underwent pickling and rust removal. We used tank soak pickling with a custom acid formula to ensure effective cleaning. Additionally, we considered the properties of antistatic agents, selecting one that not only prevents static buildup but also remains chemically stable, cost-effective, and non-corrosive.
Antistatic textiles have various applications, including in cleanroom environments, industrial settings, and even in explosive atmospheres. As industries like electronics continue to evolve, the demand for high-performance dustproof clothing increases. These materials must be resistant to washing, heat sterilization, and chemical exposure while maintaining their ability to prevent static accumulation.
To evaluate the antistatic effect, we measured the static voltage half-life and surface specific resistance of the fabric. The faster the charge decays, the better the antistatic performance. We also used friction-type electrostatic measuring instruments to assess the effectiveness of the treatment.
For oil circulation flushing, we opted for off-line circulation using a dedicated flushing unit. This method allowed us to clean the system efficiently without disrupting the original hydraulic setup. Special attention was given to the proportional directional control valves, which were temporarily replaced with flush blocks during the process.
Throughout the cleaning procedure, we monitored the system closely, ensuring proper pressure levels, checking for leaks, and regularly inspecting the oil filter. Communication devices and fire prevention measures were also put in place due to the scale of the project.
After completing the cleaning process, the system met all the required standards, and the results confirmed the effectiveness of our approach. The experience gained from this project can serve as a reference for similar hydraulic systems in other applications.
Overall, integrating pipeline cleaning into the initial design proved essential for both cost efficiency and long-term system reliability. With continuous improvements in technology, the future of antistatic textiles and hydraulic systems looks promising, offering more advanced solutions for industrial and commercial needs.
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