Working principle of water injection pump airbag accumulator

What is a controllable airbag accumulator?

A controllable airbag accumulator is composed of a piston accumulator and a controllable globe valve. Unlike conventional accumulators, it allows control over the accumulator's working state.

How a water injection pump works?

The water smoothly flows in the plunger, the pressure change is not steep, and the work condition is stable. After completing the design of the energy-saving water injection pump, the parts were processed and finally assembled according to the drawings, as shown in Fig. 14.

How does an air accumulator work?

As shown in Fig. 1, imagine that an elastic diaphragm is placed inside the air chamber so as to keep the air from coming into direct contact with the liquid. In the actual accumulator, a bladder--which is something like a rubber balloon--is installed, filled with gas (generally nitrogen gas) compressed to the given pressure.

What happens when the P/M operates as a pump?

When the P/M operates as a pump, the hydraulic fluid is pumped into the accumulator from a tank and the gas (usually nitrogen) in the chamber of the accumulator is compressed. Hydraulic accumulators (HACCs) are used to store and subsequently release hydraulic energy through a variable displacement high pressure pump/motor (P/M).

What is a main injection pump?

Main injection pump is high-speed centrifugal pump, which provides required pressure for injection of the treated water to various injection wells. 15 South High Water Injection (1994), Water Injection South (1987), Infill Complex Water Injection (1988), Water Injection North (1984).

How does a hydraulic accumulator function?

Hydraulic accumulators (HACCs) work by storing and subsequently releasing hydraulic energy. When the variable displacement high pressure pump/motor (P/M) operates as a pump, it pumps hydraulic fluid into the accumulator, compressing the gas (usually nitrogen) in the chamber.