The piston pump PVH074R01AA10A250000001001AB010A is a common oil pump used in the high-pressure oil supply system of steam turbines. As a main oil supply pump, the piston pump has been widely used in the high-pressure fire-resistant oil system of steam turbines due to its unique advantages. It can provide a stable supply of high-pressure oil and meet the requirements of the high-pressure EH oil system of steam turbines. Its principle is to generate high-pressure fuel output through the reciprocating motion of the plunger to ensure the stability of the turbine fuel injection.

The piston pump PVH074R01AA10A250000001001AB010A has good self-priming ability, which can quickly establish fuel supply when restarting after shutdown and reduce startup time. This is of great significance for the rapid start-up and shutdown of steam turbines. The pump uses a reciprocating motion of the plunger to suck in and discharge fuel through the opening and closing of the one-way valve.

During operation, there are two one-way valves, one for inhaling fuel and the other for discharging fuel. When the plunger moves in one direction, the suction check valve opens and fuel is sucked into the cylinder; when the plunger moves in the other direction, the discharge check valve opens and the fuel in the cylinder is compressed and discharged. This working mode forms a continuous oil supply after continuous movement.

During the oil inlet process, the convex part of the cam moves the plunger downward, creating a vacuum, the oil inlet hole opens, and fuel enters the pump oil chamber. The plunger moves to the bottom dead center and oil feeding ends.

During the oil return process, the plunger moves upward. When the chute communicates with the oil return hole on the sleeve, the low-pressure oil circuit in the pump oil chamber communicates with the middle hole and radial hole of the plunger head and the chute. The oil pressure Drops suddenly, the oil outlet valve closes quickly under the action of spring force, stopping oil supply. After that, the plunger will move upward. When the convex part of the cam turns over, under the action of the spring, the plunger will move downward again, starting the next cycle.

The piston pump PVH074R01AA10A250000001001AB010A can accurately control the flow and pressure of EH oil, and can well meet the requirements for oil injection, helping to improve the efficiency and operating stability of the steam turbine.

High-pressure resistant fuel systems require the use of special fuel to reduce corrosion and wear. The materials and design of the piston pump PVH074R01AA10A250000001001AB010A are usually able to adapt to the characteristics of this special oil. This makes the piston pump more adaptable and durable in the high-pressure fire-resistant oil system of steam turbines.

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