Electric drive fracturing semi-trailer of frequency conversion integrated machine

Abstract

The invention discloses an electric drive fracturing semi-trailer of a frequency conversion integrated machine. The optimization and integration of the traditional power supply semi-trailer and the fracturing semi-trailer realize the functions of power supply and fracturing of one semi-trailer without using the complete set of the power supply semi-trailer and the fracturing semi-trailer, the electric drive fracturing semi-trailer is more flexible in actual use, and the well field layout of oil and gas fields is greatly optimized; the transportation is convenient; only a set of high-voltage cables can be connected with the high-voltage power supply to reach a working state, and the wiring installation is faster; compared with diesel-driven fracturing, and the noise of the electric drive fracturing is low without exhaust emission pollution; the driving source is power, which has lower cost than the diesel; the electric drive fracturing semi-trailer adopts an integrated design of a motorand a frequency converter (namely, the frequency conversion integrated machine), the space occupied by the electric motor and the inverter in the prior art is reduced effectively, so the installing part of the electric drive fracturing semi-trailer has smaller volume and the transportation is more convenient, and can also provide space guarantee for installing other equipment on the semi-trailerbody.

Description

technical field [0001] The invention relates to the technical field of fracturing in oil and gas fields, in particular to an electric-driven fracturing semi-trailer with a frequency conversion integrated machine. Background technique [0002] In oil and gas field fracturing operation sites around the world, there are two main driving modes for plunger pumps: [0003] The first is that the diesel engine is connected to the gearbox to drive the fracturing plunger pump to work through the transmission shaft. That is to say, the power source is a diesel engine, the transmission device is a gearbox and a drive shaft, and the actuator is a plunger pump. . [0004] This configuration mode has the following disadvantages: [0005] (1) Large size and heavy weight: The diesel engine drives the gearbox to drive the plunger pump through the drive shaft, which is large in size, heavy in weight, limited in transportation, and low in power density. [0006] (2) Not environmentally frie...

AI Technical Summary

Problems solved by technology

[0005] (1) Large size and heavy weight: the diesel engine drives the gearbox to drive the plunger pump through the drive shaft, which is large in size and weight, limited in transportation, and low in power density

[0006] (2) Not environmentally friendly: Diesel engine-driven fracturing equipment will generate engine exhaust gas pollution and noise pollution during the operation of the well site. The noise exceeds 105dBA, which seriously affects the normal life of the surrounding residents.

[0007] (3) Uneconomical: Diesel engine-driven fracturing equipment has relatively high initial purchase costs, high fuel consumption per unit power during equipment operation, and high daily maintenance costs for engines and gearboxes.

[0009] Electric drive fracturing is relatively widely used in some places with relatively complete power facilities. The existing electric drive fracturing equipment usually uses special power supply equipment to provide driving power. The power supply equipment and electric drive fracturing The equipment is usually one-to-one, or several electric-driven fracturing equipments are driven by one high-power power supply equipment (hereinafter referred to as one-to-many), but whether it is one-to-one or one-to-many, in the actual use of the well site, It takes too much time to arrange the electric drive fracturing equipment and power supply equipment (that is, the electric drive fracturing equipment and power supply equipment need to be used in a complete set); it is also necessary to connect each electric drive fracturing equipment with the power supply equipment so that The electric drive fracturing equipment enters the working state; the above process is time-consuming and labor-intensive, and there are many connecting cables between the equipment, which is relatively cumbersome

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