Vertical pumps - Import export

The main parts of magnetic couplings used in GNVC series vertical pumps are the driving (external) and the driven (internal) half couplings, and a sealing sleeve between the half couplings. The exceptional reliability of Villina magnetic couplings is the result of a high-tech design: the enclosed capsular design of the half couplings (enclosed body) secures the magnetic systems from environmental effects; the use of special adhesives allows for fast fixture of domestically produced permanent magnets based on rare-earth elements on the half coupling ferrules; double protection against overheating and demagnetization is implemented using the temperature sensor of the sealing sleeve, which is triggered when the maximum acceptable operating temperature is exceeded by 20 to 50°C, with the use of magnets with Curie point of more than 100°C higher than the maximum acceptable operating fluid temperature; the sealing sleeve made of high-strength Hastelloy alloys

Villina-VS1-M type pumps are designed for use in oil and gas and chemical industries for transit of explosive and highly flammable liquids as well as corrosive media and natural gas liquids. A distinctive feature of these pumps is the ability to transit contaminated liquids with particle size of 3 to 12 mm (depending on the pump rate). MAIN SPECIFICATIONS - Pump rate ranges: 2 to 108 m3/h; - Head: 11 to 178.5 m; - Temperature of the pumped fluid: -50°С to +440°С.

Vertical semi-submersible pumps are designed to solve the problem of pumping liquid out of a tank when a part of the pump is within the pumped medium. Pump units are used with the engine speed up to 3,000 rpm. Therefore, the temperature conditions for semi-submersible pumping units are up to 250 degrees. Centrifugal semi-submersible pumps are widely used both in petroleum refining (petroleum and drainage pumps) and the chemical industry, and in the food industry. They are used for transit of various liquids and mixtures including explosive and flammable fluids (oil and gas products, etc.). Semi-submersible pumps are in between surface and submersible units and combine all their advantages, nevertheless, a semi-submersible pump is not designed to carry out specialized tasks for which these two types of units were created. Semi-submersible pumps consist of an electric motor, a working section and immersed sections. The engine is placed on a base plate

Villina-GNVCP-2T type vertical electric semi-submersible pumping units are designed for transit in stationary conditions of neutral, corrosive, toxic, as well as explosive and fire hazardous liquids, the vapors of which can form explosive mixtures with air. These are used in gas, petrochemical, petroleum refining and other industries. The vertical semi-submersible pump – the pump part is fully or partially in the pumped liquid. The unit consists of a pump part, drive sections, a base plate, a device that transmits torque from the drive, an electric motor (drive). The ground part comprises a console fastened to the base plate, an electric motor mounted and fastened to the console, and a mechanical seal support system fastened to a base plate. The semi-submersible part comprises drive sections fastened to the base plate, an elastic coupling body connected to the lower drive section, a pump connected to the elastic coupling body and a discharge line.

The design of an electric pump section is similar to the design of a standard vertical electric pump with a GNVC series magnetic coupling, which allows for the use of already proven technical solutions: impeller blades with curved surfaces create an angle of attack and partially allow for switching to the laminar mode of wall-adjacent flow on their surface and provide more efficient deflection of liquid to the periphery; a closed type impeller has a higher efficiency and longer service life compared to open and semi-closed impellers; bell-type fit of the impeller on the pump shaft precisely keeps the geometric position of the impeller with respect to the guide vanes; the vertical position of the shaft resting on a heavy-duty carrying cushion in the vertical plane, and sleeve type bearings in the horizontal plane help prevent sagging of the shaft, as for instance, in the horizontal design of the pump, and play and runout; the use of sleeve type bearings

ADVANTAGES - GNVC-P vertical semi-submersible pumps are developed and manufactured according to individual parameters of the Customer and in compliance with normative documents. - Time of manufacture: 90 days. - Warranty period: 24 months. - Chemical pumps are capable of pumping liquids with viscosity up to 35 cSt, and density up to 2,000 kg/m3. PERFORMANCE SPECIFICATIONS - Purpose: transit of corrosive, toxic, explosive and flammable fluids; - Pump rate ranges: 1 to 55 m3/h; - Head ranges: 5 to 250 m; - Seal type: a magnetic coupling according to API 685 with a sealing sleeve made of Hastelloy alloy (standard version) ensures 100% tightness; - Temperature of the pumped fluid: up to plus 250°С; - Shaft speed: 2,900 rpm; - Structural design: type VS4 according to API 610, vertical type, fixed installation on the container neck on the base plate; - Submergence: 1 to 6 metres, with a length increment of 10 cm for the choice of a specific immersed part length of the pump.