The project is located in the Xitaijinaer Lake Area of Golmud, Haixi Mongol and Tibetan Autonomous Prefecture, Qinghai Province.

Altitude (Yellow Sea Datum): 2,680–2,780 meters

Atmospheric pressure: 737.07 hPa

Multi-year average temperature: 4.76°C

Historical extreme minimum temperature: -23.8°C

Maximum wind force of Grade 9

Yahu Lake water quality: pH 6.5–8.5

In the high-altitude salt lake region, where winter temperatures can plummet to −23.8°C, water-intake operations face multiple challenges: the extreme cold can cause equipment to freeze and pipelines to rupture, while the complex, highly saline water quality places stringent demands on the equipment.

Changsha Daoyuan Smart Fluid Technology employs core technologies such as polymer floating pump stations, low-temperature and corrosion-resistant pump units, and intelligent control systems, specifically tailored to -23°C extreme cold, high altitude, high salinity In the extreme operating conditions of salt lakes, we have custom-designed an integrated water-intake solution featuring “freeze resistance and intelligent control.”

The floating-platform water intake pump station is configured as a closed prefabricated building. The floating platform primarily accommodates the pump unit and associated piping and valve equipment, electrical control systems, maintenance lifting equipment, guardrails, and anchor-retrieval mechanisms. The pump unit, piping and valve equipment, electrical control systems, and maintenance lifting equipment are housed within the enclosed pump house. Key installation advantages include: no need for cofferdams, minimal civil works, rapid on-site assembly with a short construction schedule, and suitability for rapid deployment in remote salt-lake regions.

The design water intake capacity is 43,200 m³/d, with Duck Lake serving as the water source. The water level difference at the intake point is approximately 3 meters. The floating platform is constructed with high-density polyethylene floats, which offer excellent resistance to cold, corrosion, and ultraviolet radiation. Based on the required water intake capacity, three vertical long-shaft pump units are installed on the floating platform.

Model: High-Efficiency, Energy-Saving Vertical Long-Shaft Pump 350DYLB-45

Flow rate: 900 m³ /h,

Head: 45 m,

Power: 160 kW,

2 in use, 1 on standby.

In addition, to ensure the water intake pump can draw water effectively, a vertical long-shaft pump with a wear-resistant stainless steel impeller is submerged in the water. The floating-platform water intake pumping station is connected to the shore-based main pipeline via flexible expansion joints in the delivery pipeline, thereby forming a complete water intake piping system.

The automatic control instrumentation and low-voltage systems comprise a control system (including unit automation panels and cabinets, PLCs, monitoring of pump bearing temperature and motor bearing temperature, automated valve actuation, and microcomputer-based monitoring software that can interface with the industrial park’s DCS or control computers to enable centralized control; control cables are transmitted via fiber optics) (with a reserved remote Ethernet interface for the central control host).

To ensure that the perimeter of the floating platform remains ice-free under the extreme ambient temperature of −23.8°C in the Xitaijiner Lake area of Golmud, a circular water tank is installed on the platform, and two layers of steel pipes with heat-dissipating fins are arranged around the perimeter of the floating platform. A pressurization pump is connected to the outlet of the water tank; one end of the water pipe is linked to the pump, while the other end loops around the entire perimeter of the floating platform before returning to the water tank.

On the outer wall of the water tank, first wrap an asbestos tape, then wind the electromagnetic coil according to the process specifications, and finally cover the coil with a 10-cm layer of thermal insulation cotton. Install a temperature-sensing resistance thermometer on the exterior of the tank. Connect the electromagnetic coil and the temperature-sensing lead to the controller. Once the desired temperature is set, the system will automatically maintain the tank temperature within the set range; the water pump will start automatically to circulate the heated water from one side of the tank along the platform to the other, thereby achieving water recirculation. The heated water releases heat continuously through finned heat exchangers installed on the water pipes, ensuring that the water surrounding the floating platform does not freeze and thus safeguarding the platform’s integrity. The electromagnetic heating control system operates in a primary–standby configuration, enabling automatic temperature control based on the setpoint to maintain constant temperatures in both the tank and the piping network.

Once this unit is integrated into the automated control system, during the icing season, a start-up command issued from the remote control room will activate its operating mode, enabling unattended operation just like the main water pump.

We provide tailor-made water-intake solutions tailored to the specific conditions of salt lakes and customer requirements. From equipment selection and system design to installation, commissioning, and operation and maintenance management, we offer end-to-end professional support and services.

Custom-designed, high-efficiency, energy-saving long-shaft pumps specifically developed for operation at –23°C, high altitudes, and in highly saline environments. Utilizing three-dimensional CFD simulation to optimize impeller and volute flow passages, these pumps deliver enhanced cavitation performance and efficiency under low-pressure conditions typical of high-altitude regions.

Floating pump station: modular prefabrication combined with flexible on-site assembly, with a construction period of only 10–15 days ,不受枯水期限制,可全年施工。

The floating platform features a modular design, requiring minimal civil works and short construction timelines, resulting in total investment reductions of more than 30% compared with conventional solutions.