Views: 0 Author: Site Editor Publish Time: 2026-05-11 Origin: Site
Driven by the "dual carbon" goals and the transformation of the energy structure, thermal/nuclear power plants have higher requirements for the efficiency, reliability, anti-erosion performance and ease of maintenance of their core auxiliary equipment. As the "heart" of the condensate system, the vertical multi-stage tubular bag-type condensate pump has outstanding performance and is a standard core equipment for 150MW - 1000MW units. Our company's condensate pumps have introduced advanced foreign technologies and optimized them, reaching the international advanced level.
The condensate pump is specifically designed for the high vacuum environment of the condenser's hot well at 0.095 - 0.1 MPa and the clean condensate water condition with a temperature of ≤ 80℃. Its core function is to extract the condensate water and increase its pressure. The water is then sent to the deaerator via a low-pressure heater, and at the same time, it provides sealing water for the shaft seal and the vacuum system. It is a key equipment for maintaining the vacuum of the unit, recovering the working medium, and ensuring safe operation. Each unit is typically equipped with 2 pumps of 100% capacity (1 in operation and 1 on standby), and the frequency control is suitable for a load range of 50% - 100%.
Vertical installation + first-stage double-suction impeller + low rotational speed + inverted water injection height, NPSHr as low as 3.5m, completely solving the problem of vapor entrainment at the vacuum inlet.
Integrated mechanical seal + condensate water sealing, zero air leakage, ensuring stable vacuum of the condenser.
Without disassembling the outer cylinder and pipelines, the rotor, seal, and bearing can be extracted, reducing maintenance time by more than 50%.
Space guide vanes optimize the hydraulic design, efficiency of the million-unit model exceeds 85%, and annual electricity savings exceed millions of kilowatt-hours.
Multiple guide bearings support, elastic coupling, compact pump structure, good rotor rigidity, can meet different variable frequency operation conditions.
Anti-interlock, wear-resistant pump body sealing ring structure, ensuring operational reliability.
Self-lubricating, high-maintenance-resistant tilting pad sliding bearing structure, ensuring smooth operation of the pump, long maintenance cycle.
Integrated mechanical seal structure facilitates installation and maintenance.
Vibration ≤ 4.5mm/s, MTBF reaches 25,000–32,000 hours.
Vertical embedded installation, saving floor space, suitable for narrow machine rooms.
50–1000MW subcritical / supercritical / ultra-supercritical units, such as 2×1000MW Huadian Coal Industry Chemical Materials Group Co., Ltd. Huangling Branch/Maoling Mining Storehouse Power Plant Phase II, China Coal Yongcheng Energy Project, etc.
Nuclear power conventional islands of 1 million kilowatts scale. Our company has passed the appraisal by the China Association of Transmission and Distribution, and the performance reaches the international advanced level.
Power plants along the "Belt and Road" Initiative, the domestic pump market share exceeds 40%, and ISO certification has been obtained.
Datang Yan'an Power Generation Co., Ltd.
Huanggang Dabie Mountain Second Power Generation Co., Ltd.
Shanmei Electric Power Moilu Co., Ltd.
Shanmei Electric Power (Chongqing Hechuan) Co., Ltd.
The new generation of condensers pumps are integrating intelligent monitoring, predictive maintenance, and variable frequency optimization technologies to achieve real-time condition perception, early fault warning, and precise energy consumption control, facilitating the upgrade of power generation units towards higher efficiency, lower carbon emissions, and greater intelligence. Domestic condensers pumps have moved from "following" to "leading", becoming an important symbol of the autonomy of energy equipment.
The vertical cylindrical bag-type condensate pump, with its advanced technology, reliable quality and full-scenario compatibility, has become the preferred choice for thermal, nuclear and self-owned power plants. In the wave of energy transformation, the domestic pump industry will continue to innovate, contributing solid strength to ensuring national energy security and promoting green and low-carbon development.
