Oil pumps play a vital role in oil extraction, transportation and related industrial fields. Different types of oil pumps are suitable for different working conditions and needs. The following is a detailed introduction to common oil pump types.
Oil pumps play a vital role in oil extraction, transportation and related industrial fields. Different types of oil pumps are suitable for different working conditions and needs. The following is a detailed introduction to common oil pump types.
Vane pump
The vane pump relies on the force of the rotating impeller on the liquid to transfer mechanical energy to the liquid, so that the liquid can obtain energy.
1. Centrifugal pump
The centrifugal pump is the most common type of vane pump. It uses the high-speed rotation of the impeller to enable the liquid to obtain energy under the action of centrifugal force. In the oil industry, centrifugal pumps are often used for long-distance transportation of crude oil, oil product transportation in refineries, and oil product loading and unloading in oil depots. It has the advantages of large flow, high head, simple structure, and easy operation. For example, in large oil pipeline transportation systems, centrifugal pumps can transport large amounts of crude oil to destinations hundreds or even thousands of kilometers away at a stable pressure.
2. Axial flow pump
The working principle of the axial flow pump is that the liquid flows along the pump shaft. It is characterized by large flow and low head, and is suitable for large flow and low head occasions, such as oil field water injection systems. During the water injection process in the oil field, the axial flow pump can quickly inject a large amount of water into the oil layer to maintain the oil layer pressure and improve the crude oil recovery rate.
3. Mixed flow pump
The mixed flow pump combines the characteristics of the centrifugal pump and the axial flow pump. The flow of the liquid in the impeller is affected by both the centrifugal force and the axial thrust. Its performance is between that of the centrifugal pump and the axial flow pump. It is suitable for working conditions with large flow and moderate head. It is more commonly used in some medium-sized oil production operations.
Positive displacement pump
Positive displacement pumps rely on the change of the volume of the working chamber to transport liquid.
1. Reciprocating pump
- Piston pump: The piston pump changes the volume of the working chamber through the reciprocating motion of the piston in the cylinder to achieve the suction and discharge of the liquid. In oil production, piston pumps are often used in some occasions with high pressure requirements and small flow rates. For example, in the fracturing operation of oil wells, piston pumps can provide high-pressure liquid to form cracks in the oil layer and increase the permeability of crude oil.
- Plunger pump: Plunger pump is similar to piston pump, but the plunger of plunger pump is better sealed in the cylinder and can withstand higher pressure. It is widely used in high-pressure metering and delivery in the petrochemical field. For example, in some chemical processes that require precise control of flow and pressure, plunger pumps can accurately deliver various chemical agents to the corresponding equipment.
2. Rotor pump
- Gear pump: Gear pump consists of a pair of meshing gears. Through the rotation of the gears, the liquid is brought from the suction port to the discharge port. It has the advantages of compact structure, reliable operation, and strong self-priming ability. It is often used to transport high-viscosity oil products, such as lubricating oil in refineries.
- Screw pump: Screw pump relies on the rotation of the screw to transport liquid. Single screw pump is suitable for conveying liquid containing solid particles or fibers. In oil production, it can be used to convey sand-containing crude oil; twin screw pump and three screw pump are often used to convey clean, high-viscosity oil products, with uniform flow and stable pressure.
Jet pump
The jet pump works on the principle of energy conversion during fluid flow. It forms a low pressure in the suction chamber through the injection of high-pressure working fluid, thereby sucking in and mixing the transported liquid and discharging it together. In the oil industry, jet pumps are often used in some special working conditions. For example, in offshore oil production platforms, jet pumps can use seawater as a working fluid to lift crude oil from the seabed to the platform for processing. Jet pumps have the advantages of simple structure, reliable operation, and no moving parts, but their efficiency is relatively low.
Screw drill tool circulation pump
The screw drill tool circulation pump is mainly used in the field of oil drilling. It is used in conjunction with the screw drill tool to provide power fluid for the screw drill tool, so that the rotor of the screw drill tool rotates, thereby driving the drill bit for drilling operations. This pump can provide appropriate pressure and flow according to different drilling conditions to ensure the smooth progress of drilling work. In complex drilling operations such as directional drilling and horizontal drilling, the screw drill tool circulation pump plays an important role.
There are various types of oil pumps, each with its unique working principle, performance characteristics and scope of application. In each link of the oil industry, according to the specific working conditions and needs, the rational selection of suitable oil pumps is of great significance to improving production efficiency, reducing costs and ensuring production safety. Shengtian Group provides you with various types of pumps. You can call: 0086-317-5298199, or send an email to: sale@stpipefitting.cn
