PRODUCTS CENTER
Papua New Guinea DGP Multistage Boiler Feed Water Pump Self-balancing
Head range: 50~2000m
Conveying temperature: 0 ℃ ~ 80 ℃
Inlet pressure: allowable inlet pressure 0.6MPa
Sealing form: packing seal, mechanical seal
Water pump material: HT200, HT250, QT600, ZG, 304, 316, 316L, 317L, 904L, CD4-MCu, etc
Category:
Product Description
Product Description
DGP type self-balancing multi-stage boiler high-pressure feed water pump is mainly used for conveying water containing no solid particles, the temperature is -20 ℃ ~ 150 ℃ or the physical and chemical properties are similar to water liquid, suitable for medium, low pressure and high pressure water supply. DGP type self-balancing multi-stage boiler feed water pump materials are HT200, OT600, 304, 304L, 316L, 317L, 904L, CD4, etc.
Overview
DGP self-balancing multi-stage boiler feed pump is an advanced multi-stage centrifugal pump product with high efficiency, energy saving and long service life designed to meet the needs of users. It adopts foreign high-efficiency and energy-saving water conservancy model, which changes the design of traditional multi-stage pump with balance device and accelerates the technical development of high-pressure multi-stage pump. According to the API610 standard R & D and manufacturing, in the industry in the leading position of technology. It has the advantages of wide high efficiency area, wide performance range, good cavitation performance, safe and stable operation, low noise, few wearing parts, and convenient installation and maintenance.
Structure Description
DGP type self-balancing multi-stage boiler feed pump has reformed and innovated the traditional structural form, canceled the axial force balance mechanism of multi-stage centrifugal pump and canceled the balance plate device, which is the best replacement product of D and DG multi-stage centrifugal pump.
DGP type self-balancing multi-stage boiler feed pump has no balancing device, I .e. no disc friction loss of balancing disc and no backflow loss of balancing water, so the pump efficiency is 5 ~ 14% higher than that of multi-stage pumps of the same category, and the shaft power of the pump is reduced without friction of balancing disc, thus achieving an energy-saving effect, so the power consumption of the pump during operation is about 3% higher than that of multi-stage pumps of the same category. At the same time, it completely solves various faults such as the wear of the balance disc and the balance ring or the rotor seizure caused by the failure of the balance device. Its design extends the service life of the pump. The trouble-free running time is more than 3 times that of ordinary pumps, and the maintenance cost of users is greatly reduced, thereby reducing the life cycle cost of the pump. Years of operation has proved that the performance of the product has reached the advanced level of similar products in the world.
Use
It is mainly used for conveying clear water without solid particles and at a temperature of -20 ℃ ~ 150 ℃ or liquids with physical and chemical properties similar to clear water. It is suitable for medium, low pressure and high pressure water supply.. It can also be used to transport hot water, oil, corrosive or abrasive media at temperatures ≤ 185 ℃ by changing the material (and structure) of the pump, sealing form and increasing the cooling system. Materials are HT200, QT600, ZG, 304, 304L, 316L, 317L, 904L, CD4 and other materials for users to choose from.
Model Description
Example: DG280J-43X8P
DGP-energy efficient self-balancing multistage boiler feed water pump
280-Flow at design point (m3/h)
J-Mechanical seal (not marked as packing seal)
43-Single stage head of pump at design point (m)
8-The number of stages of the pump is 8
Performance characteristics
1) High efficiency and energy saving: adopt advanced hydraulic model and independently develop high efficiency and energy saving products; As the pump rotor has no wear and axial pulsation of the balance disc, the alignment between the impeller and the guide vane is always in the best state, and the efficiency of the common multi-stage pump structure will not decrease obviously with the wear of the balance disc and the forward movement of the rotor components. In addition, there is no leakage of balance water, which reduces volume loss and improves the overall operation efficiency of the pump, the shaft power is reduced, and the average efficiency is 2%-3% higher than that of ordinary multi-stage pumps;
2) New structure: with symmetrical arrangement of impeller rotor components, the axial force generated by symmetrical impellers at all levels cancel each other out, and the automatic balance of huge axial thrust in the pump cavity can be realized without using the balance disc structure, breaking through the traditional structure of multi-stage pumps;
3) New technology: unique throttling and decompression devices, odd-level balancing devices, and can also play an auxiliary supporting role;
4) High reliability: The symmetrical arrangement of the impeller makes the axial thrust generated during operation basically self-balanced, so that there is no need for a balance disc device with small gaps, high pressure drop, easy erosion, easy wear, and easy failure. The adverse effects of axial force load on pump wear and system interference are minimized. The residual axial force is borne by the thrust bearing, so that the pump shaft is always in a state of tension, the force state of the shaft is uniform, and the stress peak is greatly reduced compared with the prototype structure, thereby improving the rigidity and critical speed of the pump rotor, so that the pump rotor operation The stability and reliability are significantly improved;
5) Good cavitation performance and long service life: optimized hydraulic and structural design, precision casting, reliable wear-resistant materials, some models of pump first-stage impeller adopts double-suction structure, so that the pump has good anti-cavitation performance, and the whole machine runs Smooth, low noise, long service life;
6) machine seal strong reliability: pump start, stop when the rotor parts no axial movement, no axial pulsation, work has been plagued by multi-stage pumps to overcome the poor reliability of the machine seal has been the problem;
7) Widely used: cancel the small gap balance disc, than the traditional multi-stage pump structure to adapt to the nature of the medium is more harsh occasions;
8) Low maintenance cost: The use of precision casting reduces the number of wearing parts and maintenance disassembly and assembly, prolongs the life of the product, avoids a series of problems caused by excessive disassembly and assembly to the greatest extent, and reduces maintenance costs;
9) Convenient maintenance: the whole product adopts three-dimensional design and numerical control processing of rotor parts, which strictly ensures the processing size and processing accuracy of each part; Accurate positioning, ordinary technicians can complete it as long as they follow the assembly sequence and requirements of the assembly drawing; It is completely avoided that the old multi-stage pump must be adjusted by professionals to locate the axial movement size, which brings great convenience to users.
Hunan Sanchang Pump Co., Ltd.
| Email: | sales@sanchangpump.com |
| Hotline: | +86 133 0748 1676 |
| +86 193 1300 1794 | |
| Mobile/wechat: | +86 133 0748 1676 |
| +86 193 1300 1794 | |
| Address: | No.517,Xiangfu Road, Yuhua |
| District, Changsha City | |
| Hunan Province, P.R.C |
