Triple screw pumps are widely used in the industry. Fuel pumping (gasoil, diesel, oil) at high pressures in gas and steam turbines and gasoil supply facilities is one of them. Lubrication and various hydraulic applications, especially pumping turbine bearing oil, shipbuilding and marine industries, chemical and petrochemical processes are another part of the applications of this type of pump.
Double/Twin screw pumps are widely used in all industries. Diesel / fuel oil pumping in gas and steam turbines to the transfer of bitumen and asphalt and thick fluids in all industries, injection of oil tanks, transfer of two-phase fluids, especially crude oil, transfer of various materials in the food industry, are part of the diverse applications of this type of screw pump.
It is the most widely used pump in all industries. The fuel pump of many turbines is gear type. The most sensitive gear pumps are related to power plant fuel with high viscosity. In addition, turbine and generator jacking pumps are vane type and with high pressures.
In power plant and oil and gas industries, power transmission is done through special gearboxes with high sensitivity and dimensional accuracy. In power plant industries, especially in GE turbines, sensitive consumers with different rotational speeds such as hydraulic pumps or fuel pumps supply their driving power from the auxiliary gearbox. In the oil and gas industries, the need for high rotation speeds for pumps, compressors and turbines is often possible by using special gearboxes. In such a situation, high dimensional accuracy, very high surface smoothness, multi-plane balance of axles and gears, as well as the need to grind the gears with grade 5 or 6 are among the requirements of gearbox production.
The fuel injection process in GE and Siemens turbines is different from each other. In GE turbines, the amount of fuel needed by the injectors (fuel injectors) is adjusted through the servo valve installed on the fuel oil screw pump. But in Siemens turbines, the screw pump pumps the fuel oil and the fuel amount is regulated by controlling the valve installed in the fuel return line from the fuel oil injector / burner.
The fuel oil start-up valve is a sensitive and accurate device that is installed on the fuel skid of V94.2 gas turbine that regulate the stream of fuel oil from screw pump to the burners.
All the parts and components of the triple screw pumps are produced inside the company, and all the parts of the triple screw pumps manufactured by Arshia are available as spare parts in the company’s
In addition to fabric samples of spare parts for double screw pumps, similar samples of these parts produced by Arshia company are available in the company's store as spare parts. including mechanical...
The most important damage in this family of advanced pumps is the wear of aluminum bushings and seals. Seals, gears and mechanical seal are available as the most important spare parts of the pump. If the main...
All lemon bearings, gears, shafts, couplings, shafts and gears of the main turbine oil pump, coil shaft and babbitt bearings of the oil pump and other GE turbine gearbox parts are available in the form of spare parts...
Since all parts of V94.2 and GE fuel injectors are produced inside the company, all parts of these fuel injectors are available as spare parts. In addition, other related parts such as metal and non-metal sealing rings are available...
Due to the fact that all the valve parts produced by Arshia are made inside the company, it is possible to supply all the start-up valve parts of the V94.2 turbine and the superheat valve regulator of the steam turbines
The main damage in Triple screw pumps is related to balance bushings, screw shafts and the main cylinder of the pump. Very high dimensional and geometric accuracy, high quality of raw materials and high mechanical …
In Double/Twin screw pumps, the variety of parts is more than Triple screw pumps. The main damage in this model of screw pumps is related to the timing gears. Power is transferred from the driving screw…
In gear pumps, due to the very close clearance of the gears with the cylinder wall and the opposite gear, the most common damage is the wear of the cylinder wall, which is often aluminum, as well…
The most damage in special power plant gearboxes, which are responsible for transferring power from the turbine to other consumers such as fuel and lubrication pumps as well as atomizing compressors…
In fuel injectors, the biggest and most common damage is related to the internal nozzle, which is exposed to severe wear due to the movement of high-pressure fluid. After that, the middle and outer nozzles experience …
In V94.2 turbines, the liquid fuel start-up valve is a very precise and sensitive device that is placed after the liquid fuel screw pump and is responsible for regulating the fuel input to the injectors. This valve…
Inside the country, there are about 80 GE-F5 gas turbines, whose liquid fuel injection process is done by this fuel injection model. The performance of this fuel injection model is very similar to the fuel injection of GE-F9 turbines. That is, unlike the V94.2 turbine fuel injectors, the fluid return path is not installed inside these fuel injectors. Therefore, it has a longer life and, as a result, less damage and failure than the V94.2 turbine fuel injection.
