Unit HB 50/50
(Equipment / Material)
Model Number: НВ505060001
Condition: New
Location or Storage Country: Russia
Service Engineering Support: Yes
Warranty: Yes
Price: Call for price
Description:
The upgraded semi-submersible unit NV-M is a unit with a vertical axial supply of the medium to the open-type impeller and with a spiral discharge of the medium from the casing through a branch pipe and through a pressure pipe to the support plate. The pump (supply, impeller, casing, branch pipe) is separated from the chassis by an oil chamber with a double mechanical seal. The pump chassis - the lower shaft and the upper shafts, connected through half couplings and sprockets, are driven by an electric motor through a coupling. The coupling consists of an upper half coupling, a half coupling and sprockets. The support of the rotating lower shaft is a 3309E-2Z SKF rolling bearing. The supports of the rotating upper shafts are 6307-2Z SKF rolling bearings. The bearings do not require additional lubrication throughout their service life. The direction of rotation of the pump shaft is clockwise when looking at the pump from the engine side. The shafts are located in sealed hangers - the lower hanger and the upper hangers - protective pipes with flange connections. Changing the immersion depth of the pump is achieved by changing the length and number of upper hangers and upper shafts. The tightness of the hangers is ensured by a double mechanical seal, which consists of two single mechanical seals of the same design. The arrangement of single mechanical seals is of the tandem type, i.e. sequential. The lower mechanical seal prevents leakage of the pumped medium from the pump side, located in the cover of the oil chamber. The friction pair of the lower mechanical seal is cooled by the pumped medium, which enters through the hole in the cover of the oil chamber from the tank and is discharged into the pump casing. The upper mechanical seal on the atmospheric side is located in the separating oil chamber and is cooled by synthetic motor oil 0W40. The tightness of the suspensions is controlled by a float level sensor - contactless level switch PDU2.1.10-EX. Failure of one of the end seals leads to leaks in the lower suspension. When the leak level rises to 125±3 mm from the suspension base, PDU2.1.10-EX is triggered, a signal is sent to the control panel.
Overview:
| Name of the indicator | Unit of measurement | Meaning |
| Temperature: - minimum - maximum | °C | – 15 + 80 |
| Kinematic viscosity | sSt | up to 70 |
| Density at plus 15 °C | kg/ m3 | from 720 to 1000 |
| Saturated vapor pressure, not more than | kPa | 66.7 |
| Impurity content: - mass fraction of sulfur, no more than - mass fraction of paraffin, no more than - mass fraction of mechanical impurities, no more than - maximum linear size of solid particles - concentration of chloride salts, no more than - hydrogen sulfide content, no more than | % % % mm mg/l ppm | 3.5 7.0 3 10 900 100 |
Main indicators of the unit
| Name of the indicator | The value of the indicator of the unit type NV-M |
| 1 Purpose indicators | |
| Nominal flow rate, m3 /h ( m3 /s), not less than | 12.5; 20; 25; 30; 50; 60 |
| Nominal pressure, m | (15; 20; 32; 50; 80; 100; 110) -3% +5% |
| Inlet pressure, MPa (kgf/cm²), no more than | 0.1 (1.0) |
| Immersion depth (distance from the supporting surface of the plate to the impeller axis), mm, no more than | Standard range – 2.5; 3.0; 3.5; 3.7; 4.0; 4.5; 5.0; 5.5; 6.0 and any other at the customer’s request |
| Nominal synchronous speed of rotation of the electric motor shaft, s -1 (rpm) | 25 (1500); 50 (3000) |
| Power consumption, kW, no more than | Depends on the specific pressure characteristics of the pump |
| 2 Indicators of technical and energy efficiency | |
| Efficiency, not less than | 35% and depends on the specific pressure characteristics of the pump |
| Permissible cavitation reserve NPSHR, no more than | 5.0m and depends on the specific pressure characteristics of the pump |
| External leakage into the environment, l/h | Absent |
| 3 Design and technological indicators | |
| Weight of the unit, kg, no more than | Specified in Appendix B |
| Overall dimensions, mm, not more than | Specified in Appendix B |
| Notes 1 The designation, technical and energy efficiency indicators are specified for pumping water (ν=1·10 -6 m 2 /s) at a temperature of 25 0 C, a density of 1000 kg/m 3 , and a barometric pressure of 1013 hPa (760 mm Hg). 2 The pressure referred to the support plate is less than the pump pressure by the value of the immersion depth and losses in the discharge pipe. 3 The permissible cavitation reserve (in excess of the vapor elasticity of the liquid) is related to the pump axis and does not depend on the liquid temperature. | |
AO Dimitrovgradhimmash
Markets: Россия
Total Employees: 1400
Locations: Russia
Main Products/Services: Production of equipment for the chemical, oil and gas industries
Registration: Russia
Year Established: 1931