Case 1
Since 2016, Huahai has been leading the development of ultra-high-flow hydraulic system technology worldwide, and was the first to develop an ultra-high-flow liquid supply system in the global coal mining industry. It was put into operation in the 8.8-meter ultra-large mining height fully mechanized mining face of Shendong Shangwan Coal Mine of the National Energy Group in April 2018. Since September 2018, this set of pumps has been used in the 8.8-meter working face of the mine, with a good operating condition. It is currently serving the fourth 8.8-meter working face, and the production has not been affected by the pump station in the past 5 years. Up to March 1, 2024, the pump station has served more than 55 million tons of safe production without major overhauls, and one spray pump has accumulated more than 32,000 hours of trouble-free operation (according to incomplete statistics, setting a world record)!
Case 2
In 2020, the large-flow liquid supply system with independent intellectual property rights of Huahai was put into operation, providing power for two working faces of Yankuang Baodian Coal Mine (coal mine with rock burst) of Shaneng Energy Group at the same time. The single pump flow is 1000L/min, and the liquid supply distance is 5km, creating a precedent for remote (centralized) liquid supply.
Meanwhile, an emulsion intelligent dosing center was established on the ground of Baodian Coal Mine, and emulsion was delivered to the underground through pipelines, creating a precedent for ground dosing.
Case 3
In 2020, a set of panel centralized remote liquid supply system was provided for Longwanggou Coal Mine of Datang Energy Investment Guoyuan Company. The liquid supply distance is 5km, and it supplies liquid to 2 working faces at the same time. The rated pressure is 42Mpa, and the single pump flow is 750L/min. It solves the technical problems of intelligent mining and high-yield and high-efficiency fully mechanized mining faces, and escorts the mining of millions of tons of intelligent mines!