DINKONDA GLOBAL Power Plants Special TGDP Type 3.75- 1350m³/h, 72-1800m Self Balancing Multi-stage High-pressure Boiler Feed Pump Centrifugal Pump

DINKONDA GLOBAL Power Plants Special TGDP Type 3.75- 1350m³/h, 72-1800m Self Balancing Multi-stage High-pressure Boiler Feed Pump Centrifugal Pump

Product Overview
The TGDP type self balancing multi-stage boiler feedwater pump is a high-pressure boiler water pump developed by DINKONDA GLOBAL, a manufacturer of self balancing multi-stage pumps. Its main function is to start the feedwater pump to supply water to the pipeline network to the set water level (pressure) when the pipeline pressure drops to a certain minimum water level (pressure) value. The DGP type self balancing multi-stage centrifugal pump eliminates the axial force balancing device of the DG type boiler feedwater pump, and uses the symmetrical arrangement of impeller and rotor components to balance the axial force, effectively solving the problem of axial displacement. During operation, there will be no efficiency loss caused by the friction and backflow of the balance disk, and the efficiency is 3-12% higher than that of ordinary multi-stage pumps of the same type. At the same time, it completely solves various faults such as wear and tear of the balance disk and balance disk seat or rotor biting caused by the failure of the balance device. The fault free operation time is also increased by more than three times, effectively extending the service life. It not only directly saves production costs for users, but also greatly reduces operation and maintenance costs. It is a DG that adopts a balance disk or balance drum structure The boiler feed pump is a good substitute product, widely used in industries such as pressure vessel water supply, hot water circulation, high-rise building water supply, farmland irrigation, fire pressure boosting, hydraulic flushing, municipal water supply and drainage, urban heating, chemical industry, aquaculture, environmental protection, etc.

Product Advantages
Application scope: The TGDP type self balancing multi-stage boiler feed pump is used to transport solid particles with a particle size of less than 2% (particle size less than 1m) and a medium solid concentration of less than 5% Wt. It is used for liquids with a temperature of ≤ 105 ℃ or other liquids with physical and chemical properties similar to water.  

Features

The TGDP type self balancing multi-stage boiler feed pump innovates the structural form of ordinary horizontal multi-stage centrifugal pumps by eliminating the axial force balancing device of ordinary multi-stage pumps. Instead, it uses the symmetrical arrangement of impeller rotor components to balance the axial force, effectively solving the problem of axial displacement. During operation, there will be no efficiency loss caused by the friction and backflow of the balance disk, and the efficiency is improved by 3-12% compared to ordinary multi-stage pumps of the same type. At the same time, it completely solves various faults such as wear of the balance disk and balance disk seat or rotor biting caused by the failure of the balance device, greatly extending the service life of the pump. After years of user experience, it has been proven that our company's self balancing multi-stage centrifugal pump series products have greatly improved reliability and efficiency compared to ordinary multi-stage centrifugal pumps. The fault free operation time has also been increased by more than three times, effectively extending the service life. This not only directly saves production costs for users, but also greatly reduces operation and maintenance costs.

1. New structure: The self balancing high-pressure water pump has a rotor component with symmetrical arrangement of impellers, which basically cancels out the axial thrust generated by the forward and reverse impellers during operation, eliminating the small clearance, high pressure drop, easy erosion, easy wear, and easy failure of the balance disk device, breaking through the traditional structure of multi-stage pumps;

2. New technology: The TGDP type self balancing multi-stage boiler feed pump has unique throttling and pressure reducing devices, odd numbered balancing devices, and can also serve as auxiliary support;

3. Efficient and energy-saving: The TGDP type self balancing multi-stage boiler feed pump adopts an advanced hydraulic model to solve the wear and axial pulsation caused by the balance plate, so that the alignment between the impeller and guide vanes is always in excellent condition. During long-term use, it also avoids the significant efficiency decline of ordinary multi-stage pumps due to the wear of the balance plate and the forward movement of rotor components, and there is no leakage of balance water, reducing volume loss. Overall, it improves the operating efficiency of the pump, reduces shaft power, and has an average efficiency 3% -12% higher than ordinary multi-stage pumps;

4. High reliability: The TGDP type self balancing multi-stage boiler feed pump uses a self balancing system to basically cancel out the axial force load generated during the operation of the pump, minimizing the wear and system interference of the rotor on the pump, and a very small residual axial force is also borne by the thrust bearing. This keeps the pump shaft in a tensile state, and the stress state of the shaft is uniform. The stress peak is greatly reduced compared to the prototype structure, thereby improving the rigidity and critical speed of the pump rotor, and significantly improving the smoothness and reliability of the pump rotor operation;

5. High stability: The TGDP type self balancing multi-stage boiler feed pump maintains extremely high stability and operating efficiency even after long-term operation due to the excellent combination of symmetrical impellers and guide vanes, as well as reasonable clearance and wide axial throttling design;

6. Good cavitation performance: The TGDP type self balancing multi-stage boiler feed pump adopts an optimized hydraulic model and structural design, a special first stage impeller double suction structure, precision casting, and wear-resistant materials, making the pump have good cavitation resistance. The whole machine runs smoothly and has low noise, and users do not need to configure a pre pump or increase the height of the inlet water tank;

7. Strong reliability of mechanical seal: Due to the lack of axial movement of rotor components during the start and stop of the self balancing high-pressure water pump, and the absence of axial pulsation during operation, the problem of poor mechanical seal reliability that has always plagued multi-stage pumps has been overcome;

8. Convenient maintenance: The TGDP type self balancing multi-stage boiler feed pump adopts a three-dimensional design, and the rotor components are CNC machined to strictly ensure the machining size and accuracy of each component, allowing the pump to be quickly assembled and disassembled. The seals and bearings can be replaced without disassembling the pump body and inlet and outlet pipelines. Generally, technicians only need to follow the assembly sequence and requirements of the assembly drawing to complete it, completely avoiding the need for professional personnel to adjust the positioning and axial displacement size of old-fashioned multi-stage pumps, bringing great convenience to users;

9. Low maintenance rate: The TGDP type self balancing multi-stage boiler feed pump adopts precision casting, reducing vulnerable parts and the number of maintenance and disassembly times, extending the product's service life, and greatly avoiding a series of problems caused by excessive disassembly and assembly, thereby reducing maintenance costs;

10. Strong applicability: The TGDP type self balancing multi-stage boiler feed pump adopts an advanced modular design with locally tested components that have undergone extensive use and long-term operation. The components have a high degree of interchangeability and eliminate the small gap balance plate device, making it more suitable for situations with more severe medium properties than traditional structure multi-stage pumps.