An Engineering Project of a Hydropower Bureau in Chongqing

An Engineering Project of a Hydropower Bureau in Chongqing

Summary

We partnered with a Chongqing Hydropower Bureau on a tunnel project facing high humidity and 38°C heat. We supplied a customized high-pressure screw compressor with enhanced moisture resistance to prevent oil emulsification. The unit ran 18 months with zero downtime, powering multiple rock drills with 22% higher efficiency and 15% lower fuel use. The bureau now adopts our machines as their standard. This case proves our reliability for critical infrastructure.

Project Background & Client Pain Points


Our client, a tier-one Hydropower Construction Bureau in Chongqing, faced significant challenges during the construction of a large pumped-storage power station. The site featured high-altitude tunnels with excessive groundwater seepage and summer temperatures exceeding 38°C with 90% relative humidity. Their previous compressors frequently shut down due to "emulsified lubricant" and overheating, causing costly project delays and tool breakage. The procurement manager urgently sought a supplier capable of customizing solutions rather than selling standard off-the-shelf products.
Our Customized Solution
Leveraging 21 years of manufacturing expertise, we deployed our flagship heavy-duty screw air compressor, equipped with an oversized aftercooler and a specialized high-temperature-resistant synthetic lubricant. We added an automatic water drainage system at the air receiver and installed an extra-stage air filtration module to handle the silica dust typical of Chongqing's granite strata. Furthermore, our engineers reprogrammed the PLC controller to prioritize "constant pressure" over "energy saving" during peak load, ensuring stable 8.5 bar pressure even with fluctuating air demand.
Project of a Water and Electricity Bureau in Chongqing
Performance & Results
During the 14-month trial phase, our compressor achieved a 99.7% uptime, reducing unplanned maintenance from monthly to quarterly. The specific fuel consumption per cubic meter of drilled rock decreased by 15%, directly saving the bureau over $28,000 in operating costs. More importantly, our 24/7 remote monitoring and local service network guaranteed a response time of under 4 hours for any technical query.
Value Beyond the Product
As an industry standard-setter and exporter to over 100 countries, we provided full documentation, including CE certification, performance curves, and a bilingual operation manual. This project transformed our relationship from vendor to long-term technical partner, with repeat orders for three subsequent diversion tunnels. We proved that for mega-infrastructure, choosing a reliable compressor is not an expense—it's an investment in schedule certainty.