CN210105993U - Power supply semi-trailer of electrically-driven fracturing equipment - Google Patents
Power supply semi-trailer of electrically-driven fracturing equipment Download PDFInfo
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- CN210105993U CN210105993U CN201920887083.9U CN201920887083U CN210105993U CN 210105993 U CN210105993 U CN 210105993U CN 201920887083 U CN201920887083 U CN 201920887083U CN 210105993 U CN210105993 U CN 210105993U
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Abstract
The utility model discloses a power supply semitrailer of electricity drive fracturing equipment adopts gas turbine engine, generator and rectifier unit's compound mode, and the generator directly sends required winding form and the voltage of rectifier unit, has saved conventional rectifier transformer equipment, is connected through being total direct current bus between rectifier unit and the contravariant unit for total direct current bus can drive a plurality of contravariant units respectively, has reduced the wiring of power supply line. The high-voltage inverter unit is arranged on a gooseneck of the electric driving semitrailer, so that the space arrangement of the equipment is optimized. The whole power supply equipment has the advantages of more compact structure, small occupied area and simple wiring.
Description
Technical Field
The utility model relates to an oil gas field exploitation technical field, concretely relates to electricity drive fracturing unit's power supply semitrailer.
Background
In the fracturing operation site of the global oil and gas field, the traditional fracturing equipment adopts the configuration mode of a power transmission system, namely a diesel engine is connected with a gearbox and drives a fracturing plunger pump to work through a transmission shaft, and the configuration mode has the following defects: (1) large volume and heavy weight: the diesel engine drives the gearbox to drive the fracturing plunger pump through the transmission shaft, and the fracturing plunger pump is large in size, heavy in weight, limited in transportation and low in power density. (2) And is not environment-friendly: in the well site operation process of the fracturing equipment driven by the diesel engine, engine exhaust pollution and noise pollution can be generated, the noise exceeds 105dBA, and the normal life of surrounding residents is seriously influenced. (3) Uneconomic: the fracturing equipment driven by the diesel engine has the advantages of higher initial purchase cost, high unit power fuel consumption cost during the operation of the equipment and high daily maintenance cost of the engine and the gearbox. In view of the development of global oil and gas development equipment towards low energy consumption, low noise and low emission, the above disadvantages of the conventional fracturing equipment using diesel engine as power source hinder the development process of unconventional oil and gas energy to some extent.
The electric driving equipment replaces the conventional diesel engine driving to be a good scheme, but the conventional generator power supply scheme adopts a high-voltage generator, namely a rectifier transformer is needed to supply power to a rectifier unit, and the rectifier transformer is large in size, high in price and complex in wiring. Due to the characteristics of the rectifier transformer, a power supply part in the electric driving equipment is large in size, namely, large in occupied area, high in manufacturing cost and complex in wiring, so that the wide application of the electric driving equipment is greatly limited.
Therefore, a power supply semi-trailer of the electrically driven fracturing equipment, which is small in size, low in manufacturing cost and simple in wiring, is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a not enough of prior art is overcome to the purpose, provides a power supply semitrailer of electricity drive fracturing equipment, adopts gas turbine engine, generator and rectifier unit's compound mode, and the generator directly sends required winding form and the voltage of rectifier unit, has saved conventional rectifier transformer equipment, is connected through being total direct current bus between rectifier unit and the contravariant unit for total direct current bus can drive a plurality of contravariant units respectively, has reduced the wiring of power supply line. The high-voltage inverter unit is arranged on a gooseneck of the electric driving semitrailer, so that the space arrangement of the equipment is optimized. The whole power supply equipment has the advantages of more compact structure, small occupied area and simple wiring.
The purpose of the utility model is achieved through the following technical measures: the utility model provides a power supply semitrailer of electricity drive fracturing equipment, includes the power supply and partly hangs the automobile body, gas turbine engine, the generator, rectification unit and contravariant unit, gas turbine engine, generator and rectification unit are integrated on the power supply partly hangs the automobile body, and gas turbine engine is 1, and the generator is 1, and the rectification unit multiunit, the one end and the gas turbine engine of generator are connected, and the other end and the rectification unit of generator are connected, set up side by side between the multiunit rectification unit, and the contravariant unit is established on the gooseneck of the electricity drive partly hangs the automobile body, and the contravariant unit is the multiunit, is connected through being total direct current bus between rectification unit and the contravariant unit.
Further, the generator is a double-winding generator.
Further, the generator directly emits the winding form and voltage required by the rectifying unit.
Further, the phase difference of the double windings of the generator is 30 degrees, and the winding form is Y-Y type or D-D type.
Further, the power of the generator is above 10MVA, and the frequency is 50-60 Hz or 100-120 Hz.
Further, the rectifying unit voltage is between 4000VDC and 6500 VDC.
Further, each of the inverter units includes 2 inverters, and the inverters are three-level inverters.
Furthermore, the inversion unit arranged on the gooseneck of the other semitrailer is a high-voltage inversion unit.
Compared with the prior art, the beneficial effects of the utility model are that: 1. by adopting the combination mode of the gas turbine engine, the generator and the rectifying unit, the generator directly sends out the winding form and the voltage required by the rectifying unit, and the conventional rectifier transformer equipment is saved.
2. The rectification unit is connected with the inversion units through the common direct current bus, so that the common direct current bus can drive the multiple inversion units respectively, and wiring of a power supply line is reduced.
3. The high-voltage inverter unit is arranged on a gooseneck of the electric driving semitrailer, so that the space arrangement of the equipment is optimized.
4. The whole power supply equipment has the advantages of more compact structure, small occupied area and simple wiring.
5. The whole power supply equipment has high output power and provides powerful guarantee for high-power electrically-driven fracturing equipment.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural view of an electric supply semitrailer.
Fig. 2 is a schematic diagram of the structure of an electrically driven fracturing apparatus.
The system comprises a power supply semi-trailer body 1, a gas turbine engine 2, a generator 3, a rectifying unit 4 and a high-voltage inverter unit 5.
Detailed Description
The embodiment, as shown in fig. 1 to 2, a power supply semi-trailer of electrically-driven fracturing equipment, including power supply semi-trailer body 1, gas turbine engine 2, generator 3, rectifying unit 4 and inverter unit, gas turbine engine 2, generator 3 and rectifying unit 4 are integrated on power supply semi-trailer body 1, and gas turbine engine 2 is 1, and generator 3 is 1, and 4 multiunits of rectifying unit, generator 3's one end and gas turbine engine 2 are connected, and generator 3's the other end and rectifying unit 4 are connected, set up side by side between the multiunit rectifying unit 4, and inverter unit establishes on the gooseneck of electrically-driven semi-trailer body, and inverter unit is the multiunit, is connected through being total to direct current bus between rectifying unit 4 and the inverter unit. The generator 3 is a double winding generator. The generator 3 directly delivers the winding form and the voltage required by the rectifying unit 4. This power supply semitrailer adopts gas turbine engine 2, generator 3 and rectifier unit 4's compound mode for the supporting power supply semitrailer of electricity drive fracturing equipment, and integrated on a power supply semitrailer body 1, generator 3 directly sends the required winding form of rectifier unit 4 and voltage, and rectifier transformer equipment in the conventional power supply has directly been saved to this kind of power supply mode for the volume of power supply semitrailer is littleer. The rectifying unit 4 is connected with the inversion units through the common direct current bus, so that the common direct current bus can drive the plurality of inversion units respectively, wiring of a power supply line is reduced, connection of the line is simplified, and wiring is simpler.
The inversion unit arranged on the gooseneck of the electrically driven semi-trailer body is a high-voltage inversion unit 5. The high-voltage inverter unit 5 is arranged on the gooseneck of the electrically-driven semi-trailer body, so that the space arrangement of the equipment is optimized, and the whole electrically-driven fracturing equipment is more compact in structure and small in occupied area.
The phase difference of the double windings of the generator 3 is 30 degrees, and the winding form is Y-Y type or D-D type. The ac voltage generated by the generator 3 is 1600VAC to 2300 VAC.
The power of the generator 3 is above 10MVA, the frequency is 50-60 Hz or 100-120 Hz, the voltage of the rectifying unit 4 is above 4000VDC, and the voltage of the rectifying unit is further 4000VDC to 6500 VDC. The power supply semitrailer has the advantages that the output power of the power supply semitrailer is large, and accordingly the power supply semitrailer can drive a large-power electrically driven fracturing semitrailer.
As shown in fig. 2, it is a schematic diagram of the connection between the power supply semitrailer and the high-power electrically-driven fracturing semitrailer. The rectification unit 4 on the power supply semi-trailer body 1 is connected with the inversion units on the goosenecks of the electric drive semi-trailer body through a common direct current bus, each inversion unit is of a cabin type structure and is internally provided with 2 inverters, and the inverters are three-level inverters. Each inverter can independently drive one motor to work, and the plunger pump is driven to work through the motor, so that powerful guarantee is provided for power supply of high-power electric driving equipment. The lubricating oil radiator cools the lubricating oil of the plunger pump, and the electric driving fracturing semitrailer is locally controlled through the electric control cabinet.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a power supply semitrailer of electricity drive fracturing equipment, includes the power supply semitrailer body, gas turbine engine, generator, rectifier unit and contravariant unit, its characterized in that: the gas turbine engine, generator and rectification unit integration are on the semi-trailer body of power supply, and gas turbine engine is 1, and the generator is 1, the rectification unit multiunit, and the one end and the gas turbine engine of generator are connected, and the other end and the rectification unit of generator are connected, set up side by side between the multiunit rectification unit, and the contravariant unit is established on the gooseneck of the semi-trailer body of electricity drive, and the contravariant unit is the multiunit, is connected through total direct current bus between rectification unit and the contravariant unit.
2. The power supply semitrailer of an electrically driven fracturing device of claim 1, characterized in that: the generator is a double-winding generator.
3. The power supply semitrailer of an electrically driven fracturing device of claim 2, characterized in that: the generator directly delivers the winding form and the voltage required by the rectifying unit.
4. The power supply semitrailer of an electrically driven fracturing device of claim 2, characterized in that: the phase difference of the double windings of the generator is 30 degrees, and the winding form is Y-Y type or D-D type.
5. The power supply semitrailer of an electrically driven fracturing device of claim 1, characterized in that: the power of the generator is above 10MVA, and the frequency is 50-60 Hz or 100-120 Hz.
6. The power supply semitrailer of an electrically driven fracturing device of claim 1, characterized in that: the rectifying unit voltage is 4000VDC to 6500 VDC.
7. The power supply semitrailer of an electrically driven fracturing device of claim 1, characterized in that: each inversion unit comprises 2 inverters which are three-level inverters.
8. The power supply semitrailer of an electrically driven fracturing device of claim 1, characterized in that: the inversion unit arranged on the gooseneck of the other semitrailer is a high-voltage inversion unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920887083.9U CN210105993U (en) | 2019-06-13 | 2019-06-13 | Power supply semi-trailer of electrically-driven fracturing equipment |
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| CN201920887083.9U CN210105993U (en) | 2019-06-13 | 2019-06-13 | Power supply semi-trailer of electrically-driven fracturing equipment |
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