HD type vertical diagonal flow pump
The HD type diagonal flow pump is a vertical pump developed by integrating excellent hydraulic models, reasonable structures and advanced manufacturing methods at home and abroad. It can transport clean water, rainwater, seawater, sewage and other media with a temperature not exceeding 55°C. It is mainly used in cooling water circulation pumps in power plants, seawater circulation pumps in seawater desalination plants, vaporization pumps for liquefied natural gas, etc. It can also be used for water supply and drainage in cities, industries, mining and farmland.
Performance range:
Flow Q: (0.27~16.7)m³/s
Lift H: (5.7~60) m
HD type vertical diagonal flow pump
Pump shaft with large protective tube structure:
The pump shaft protective tube adopts a large protective tube structure to prevent the core-pulling component from being unable to be extracted after the pump has been used for several years, making maintenance more convenient.
Excellent service:
The pump shaft protective tube adopts a large protective tube structure to prevent the core-pulling parts from being unable to be extracted after the pump has been used for several years, making maintenance more convenient.
Sealed lubricated guide bearing：
Used in seawater and media with high sand content. In order to extend the service life of the pump shaft and guide bearing, our company developed a closed lubricating water system to isolate the shaft and guide bearing from the medium.
Embedded polymer materials:
Products suitable for pump stations can be specially designed according to user requirements. We attach great importance to the high performance, high quality and delivery time of our products.
- Model Description
- Structural description
- Structure diagram
- Installation method
a.Co-seating (single foundation) installation (see structural diagrams 1, 2, 3, 4)
Figures 1 and 2 show the non-extractable structure with the pump outlet pipe above the base layer and the rotor extractable structure; Figures 3 and 4 show the non-extractable structure with the pump outlet pipe below the base layer and the rotor extractable structure.
b.Separate type (double foundation) installation (see structure diagram 5)
The pump outlet pipe is between the two foundation layers and has two structures: pumpable and non-pumpable.
- The lower part of the pump is submerged in water. The suction port is a vertically downward bell mouth suction. The suction pool is a wet pit type, or it can be designed as a dry pit type according to needs.
- The pump can be designed as withdrawable or non-drawable (rotor part or inner casing)
- The blades of the impeller can be made into non-adjustable (fixed blades), half-adjustable or fully-adjustable forms.
- The pump bearings can be rubber bearings, Sailon bearings or AR bearings. Sailon bearings and AR bearings can be started without external water lubrication.
- The axial thrust of the pump is borne by the motor. In some small pumps, the axial thrust is borne by the pump itself.
- The pump impeller is usually one-stage, but can also be designed into multiple stages as needed.
HD type diagonal flow pump single foundation outlet pipe structure diagram on the foundation
Structural diagram of HD type diagonal flow pump single foundation outlet pipe under the foundation
- Safe, reliable and long service life.
- The pump has high efficiency, ranging from 85% to 90%, and the high efficiency area is wide.
- The pump has good cavitation performance and small excavation depth.
- The pump shaft power curve is relatively gentle, and the pump is not prone to overpowering due to working conditions deviation during operation.
- Small size, small floor space, and easy construction of water inlet channels.
- The structure is reasonable and easy to assemble and disassemble. The rotor does not need to be pumped into the pool for maintenance, which is convenient for maintenance.
| serial number | Part name | quantity | unit | Material | Remark | ||
| clear water | sea water | | Sea water Ⅱ | |||||
| 1 | suction bell tube | 1 | piece | HT250/Q235-A | HT250NI2Cr/
0Cr18Ni9Ti/316 |
Duplex steel 2205 | |
| 2 | impeller | 1 | piece | 7G3511Cr18Ni9 | 316/316L | Duplex steel 2205/2507 | |
| 3 | shaft | 1~4 | piece | 45/40Cr | 316/316L | Duplex steel 22055/2507 | |
| 4 | Guide vane body | 1 | piece | HT250/Q235-A | HT250NI2Cr/0Cr18Ni9Ti/316 | Duplex steel 2205/2507 | |
| 5 | Internal protective tube | 1 | piece | Q235-A | 0Cr18Ni9Ti/316 | Duplex steel 2205 | |
| 6 | external take over | 1 | piece | HT250/Q235-A | HT250NI2Cr/
0Cr18Ni9Ti/316 |
Duplex steel 2205 | |
| 8 | Bend pipe | 1 | piece | HT250/Q235-A | HT250NI2Cr/
0Cr18Ni9Ti/316 |
Duplex steel 2205 | |
| 9 | pump cover | 1 | piece | HT250/Q235-A | 0Cr18Ni9Ti/316 | Duplex steel 2205 | |
| 10 | pump base | 1 | piece | HT250/Q235-A | 0Cr18Ni9Ti/316 | Duplex steel 2205 | |
| 11 | base ring | 1 | piece | HT250/Q235-A | Cr-Ni cast iron/Q235-A+ coating | Cr-Ni cast iron+coating/Q235-A+coating | |
| 12 | Motor base | 1 | piece | HT250/Q235-A | HT250/Q235-A | HT250 or Q235-A | |
| 13 | Coupling parts | 1 | set | HT250 /35 | 0Cr13Ni4Mo / 316 |
Duplex steel 2205 | |
| 14 | Adjusting nut | 1 | piece | 45 | 0Cr13Ni4Mo /
316 |
Duplex steel 2205 | |
| 15 | stuffing box | 1 | piece | HT250 | 0Cr18Ni9Ti/316 | Duplex steel 2205 | |
| 16 | Guide bearing | 1~4 | piece | Rubber/Salon | Salon | Salon/AR | Consumable parts (quantity determined by structure) |
| 17 | packing bushing | 1 | piece | 1Cr18Ni9 chrome plated | 1Cr18Ni9 chrome plated | Duplex steel 2205 | Ditto |
| 18 | Shaft sleeve | 1~4 | piece | 1Cr18Ni9 chrome plated | 1Cr18Ni9 chrome plated | Duplex steel 2205 | Ditto |
| 19 | Pump body sealing ring | 0~2 | piece | HT250 | 1Cr18Ni12MoTi | tin bronze/Duplex steel 2205 | Ditto |
| 20 | Impeller seal ring | 0~2 | piece | O235-A/1Cr18Ni9 | 0Cr18Ni12MoTi | Duplex steel 2205/2507 | Ditto |
| 21 | filler | 1 | box | Ramie | Ramie/carbon fiber | Ramie/carbon fiber | Ditto |
| 22 | Telescopic section | 1 | set | HT250/Q235-A | 0Cr18Ni9Ti/316 | Duplex steel 2205 | When ordering, please indicate whether to bring |
| 23 | “Lubricating Water Cooling Accessory” | 1 | set | (Pressure gauges, regulating valves, flow indicators and small pipes, etc.) | When ordering, please indicate whether to bring | ||
| Complete set scope | name | quantity | Remark |
| host computer | Pump | 1 unit | |
| 1 unit | |||
| annex | Auto exhaust valve | 1 piece | |
| Lubricating water device | 1 group | ||
| tool | Special disassembly and assembly tools | 1 group |
- In addition to the performance parameters on the sample, the pump performance can also be ordered with other performance parameters;
- For the pump structure, please refer to any one of Figures 1 to 5, or put forward corresponding structural requirements according to the list of 5 structural diagrams, and clarify whether to make requirements for the position where the pump axial water thrust is received (on the pump or on the motor);
- Make requirements for the material type of main parts or propose pumping media.