Today, you will learn about the application of vane pumps; respect for mechanical geniuses allows us to fly from one country to another and recognizes an engineering technology that has a huge impact on our lives, whether we are know.

Hydraulic Vane Pumps are commonly used as high-pressure hydraulic pumps for automobiles, which can perform braking, boosting, air conditioning and automatic transmission. Although there are also mid-range pressure pumps for soft drink dispensers and espresso machines.
In other words, these pumps have also become an important part of air travel, without which today's modern aircraft would not be operational.





What is a vane pump?

Vane pumps are rotary pumps designed to handle medium to low viscosity liquids. This is a vacuum pump that sends liquid at a constant speed through its housing at a constant speed, despite a change in back pressure (also known as positive displacement).

Known as a "constant flow machine", it works well when used to process gasoline, fuel oil, alcoholic ammonia, and liquefied petroleum gas, and is most commonly used in the automotive industry.

These pumps are self-compensating for tears and wear, and many different functions depend on them. It has become a key device for braking, power steering, automatic transmissions and supercharging.

Although most commonly used in automobiles, many other vehicles, including airplanes, also rely on this pump. Vane pumps come in many different configurations, they are easy to maintain and have good suction power.

How vane pumps work

A key thing to keep in mind when understanding how a vane pump works is that it generates fluid movement-it does not generate pressure. Mechanical action creates a vacuum, forcing the liquid to flow from the reservoir to the pump, and then moves it into the hydraulic system.

As mentioned above, this is done through positive displacement. Although there are many different configurations of vane pumps, their working principles are basically the same.

Each pump is equipped with a circular rotor that rotates in a large circular cavity, called a cam. The centers of these two circles are offset, causing eccentricity (which means they do not share the same center).

The vanes are allowed to slide in and out of the rotor, and are sealed at all edges, forming a vane chamber for pumping. On the intake side of the pump, the volume of the vane cavity is increasing. These enlarged blade cavities are filled with fluid pushed by the inlet pressure.

Inlet pressure is actually the pressure from the pumping system, usually just atmospheric pressure. On the discharge side of the pump, the volume of the vane cavity decreases, forcing fluid to flow out of the pump. Each rotation of the blades drives out the same volume of fluid.

Unlike other pumps, vane pumps allow fluid to flow quickly through the system. This helps increase the pressure of the fluid. If the fluid is thin, the transfer speed will increase and the pressure will increase significantly.

Application of vane pump in aircraft

Almost all modern aircraft use hydraulic power components. Because they are engine-driven, air-driven, and use electric pumps, they cannot run without them.

On smaller, lighter aircraft, vane pumps may only be used to activate the wheel brakes, although in larger aircraft such as the Airbus A380-800, the use of these systems is more critical (not that the braking itself is not important!)

Usually depending on the size of the aircraft, multiple hydraulic systems will work together and are critical for braking, front wheel steering, extended landing gear, flaps and slats, operating cargo door / loading ramps, and pitch control of the aircraft, etc. Important propeller.

They are also used to control wipers. You might not think that they require a lot of power or pressure, but when the aircraft we are talking about usually travels at 930 km / h, you need a lot of force due to severe weather hitting the air from close range.

The advantage of using a vane pump for aerospace to accomplish all of these purposes is that it can handle thin liquids at higher pressures and compensate for wear by extending the vanes.

In this way, you can-the importance of vane pumps on the aircraft-a kind of mechanical engineering, although you may have never heard of it before, it can ensure your safety in the air and can be delivered to you in one stop you.

Hydraulic vane pumps do play an integral role in our daily lives.

Zhejiang Yongling Hydraulic Machine Co , Ltd . is a large-scale high-performance hydraulic vane pump manufacturer and supplier in China. View hydraulic vane pump product information and related information, for purchase visit: https://www.china-vanepump.com