WO2020248374A1 - 一种电驱压裂设备的供电半挂车 - Google Patents

一种电驱压裂设备的供电半挂车 Download PDF

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Publication number
WO2020248374A1
WO2020248374A1 PCT/CN2019/102811 CN2019102811W WO2020248374A1 WO 2020248374 A1 WO2020248374 A1 WO 2020248374A1 CN 2019102811 W CN2019102811 W CN 2019102811W WO 2020248374 A1 WO2020248374 A1 WO 2020248374A1
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Prior art keywords
power supply
trailer
generator
electric drive
semi
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PCT/CN2019/102811
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English (en)
French (fr)
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崔树桢
张日奎
刘�东
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烟台杰瑞石油装备技术有限公司
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Publication of WO2020248374A1 publication Critical patent/WO2020248374A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/2607—Surface equipment specially adapted for fracturing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
    • B62D53/08—Fifth wheel traction couplings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H02K11/049—Rectifiers associated with stationary parts, e.g. stator cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H02K11/049—Rectifiers associated with stationary parts, e.g. stator cores
    • H02K11/05—Rectifiers associated with casings, enclosures or brackets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/70—Application in combination with
    • F05D2220/76—Application in combination with an electrical generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines

Definitions

  • the invention relates to the technical field of oil and gas field exploitation, in particular to a power supply semi-trailer for electric drive fracturing equipment.
  • the traditional fracturing equipment adopts the power transmission system configuration, that is, the diesel engine is connected to the gearbox and the fracturing plunger pump is driven by the drive shaft.
  • This configuration mode has the following shortcomings: (1 ), large volume and weight: diesel engine drive gearbox drives fracturing plunger pump via drive shaft, which is large in size, heavy in weight, limited in transportation and low in power density.
  • Diesel engine-driven fracturing equipment will produce 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 surrounding residents.
  • Electric drive equipment is a good solution to replace the conventional diesel engine drive.
  • the conventional generator power supply solution uses a high-voltage generator, that is, a rectifier transformer is required to power the rectifier unit.
  • the rectifier transformer is bulky, expensive, and complicated in wiring. Due to the above characteristics of the rectifier transformer itself, to some extent, the power supply part of the electric drive equipment is large in size, that is, it covers a large area, high cost, and complicated wiring, which greatly limits the wide application of electric drive equipment.
  • the purpose of the present invention overcomes the shortcomings of the prior art, and provides a power supply semi-trailer for electric drive fracturing equipment, which adopts a combination of a gas turbine engine, a generator and a rectifier unit, and the generator directly sends out the winding form required by the rectifier unit and The voltage saves the conventional rectifier transformer equipment.
  • the rectifier unit and the inverter unit are connected by a common DC bus, so that the common DC bus can drive multiple inverter units separately, reducing the wiring of the power supply line.
  • the high-voltage inverter unit is installed on the gooseneck of the electric drive semi-trailer, optimizing the space layout of the equipment.
  • the entire power supply equipment has a more compact structure, a small footprint and simple wiring.
  • a power supply semi-trailer for electric drive fracturing equipment including a power supply semi-trailer body, a gas turbine engine, a generator, a rectifier unit and an inverter unit, the gas turbine engine,
  • the generator and the rectifier unit are integrated on the power supply semi-trailer body, one gas turbine engine, one generator, multiple rectifier units, one end of the generator is connected to the gas turbine engine, and the other end of the generator is connected to the rectifier unit
  • Multiple groups of rectifier units are arranged side by side, the inverter units are arranged on the gooseneck of the electric drive semi-trailer body, the inverter units are in multiple groups, and the rectifier units and the inverter units are connected by a common DC bus.
  • the generator is a dual-winding generator.
  • the generator directly generates the winding form and voltage required by the rectifier unit.
  • phase difference of the dual windings of the generator is 30°, and the winding form is Y-Y type or D-D type.
  • the power of the generator is above 10 MVA, and the frequency is 50-60 Hz or 100-120 Hz.
  • the voltage of the rectifier unit is 4000VDC to 6500VDC.
  • each of the inverter units includes two inverters, and the inverters are three-level inverters.
  • the inverter unit provided on the gooseneck of the other semi-trailer is a high-voltage inverter unit.
  • the present invention has the following beneficial effects: 1. Using a combination of gas turbine engine, generator and rectifier unit, the generator directly sends out the winding form and voltage required by the rectifier unit, saving conventional rectifier transformers equipment.
  • the rectifier unit and the inverter unit are connected through a common DC bus, so that the common DC bus can drive multiple inverter units separately, reducing the wiring of the power supply line.
  • the high-voltage inverter unit is installed on the gooseneck of the electric drive semi-trailer, which optimizes the space layout of the equipment.
  • the entire power supply equipment has a more compact structure, a small footprint and simple wiring.
  • the large output power of the entire power supply equipment provides a strong guarantee for high-power electric drive fracturing equipment.
  • Figure 1 is a schematic diagram of the structure of a power supply semi-trailer.
  • Figure 2 is a schematic diagram of the electric drive fracturing equipment.
  • Power supply semi-trailer body 2. Gas turbine engine, 3. Generator, 4. Rectifier unit, 5. High voltage inverter unit.
  • a power supply semi-trailer for electric drive fracturing equipment includes a power supply semi-trailer body 1, a gas turbine engine 2, a generator 3, a rectifier unit 4 and an inverter unit. Turbine engine 2, generator 3 and rectifier unit 4 are integrated on power supply semi-trailer body 1.
  • the generator 3 is a dual-winding generator.
  • the generator 3 directly generates the winding form and voltage required by the rectifying unit 4.
  • the power supply semi-trailer is a power supply semi-trailer for electric drive fracturing equipment.
  • the inverter unit provided on the gooseneck of the electric drive semi-trailer is a high-voltage inverter unit 5.
  • the high-voltage inverter unit 5 is arranged on the gooseneck of the electric drive semi-trailer body to optimize the space arrangement of the equipment, so that the entire electric drive fracturing equipment has a more compact structure and a small footprint.
  • the phase difference of the dual windings of the generator 3 is 30°, and the winding form is Y-Y type or D-D type.
  • the AC voltage generated by the generator 3 is 1600VAC to 2300VAC.
  • the power of the generator 3 is above 10MVA, the frequency is 50-60Hz or 100-120Hz, and the voltage of the rectifier unit 4 is above 4000VDC, and the voltage of the rectifier unit is further 4000VDC to 6500VDC. It is ensured that the output power of the power supply semi-trailer is large, so that a high-power electric drive fracturing semi-trailer can be driven.
  • FIG. 2 it is a schematic diagram of the connection between the power supply semi-trailer and the high-power electric drive fracturing semi-trailer.
  • the rectifier unit 4 on the power supply semi-trailer body 1 is connected to the inverter unit on the gooseneck of the electric drive semi-trailer body through a common DC bus.
  • Each of the inverter units has a cabin structure with two inverters inside.
  • the inverter is a three-level inverter.
  • Each inverter can independently drive a motor to work, and the plunger pump is driven by the motor, which provides a strong guarantee for the power supply of high-power electric drive equipment.
  • the lubricating oil radiator cools the lubricating oil of the plunger pump, and realizes the local control of the electric drive fracturing semi-trailer through the electric control cabinet.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Rectifiers (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Inverter Devices (AREA)

Abstract

一种电驱压裂设备的供电半挂车（1），采用燃气涡轮发动机（2）、发电机（3）和整流单元（4）的组合方式，发电机（3）直接发出整流单元（4）所需的电压，节省了常规的整流变压器设备，整流单元（4）与逆变单元（5）之间通过共直流母线连接，使得共直流母线可以分别驱动多个逆变单元（5），减少了供电线路的接线。高压逆变单元（5）设置在电驱半挂车的鹅颈上，优化了设备的空间布置。整个供电设备，结构更紧凑，占地面积小，接线简单。

Description

一种电驱压裂设备的供电半挂车 技术领域
本发明涉及油气田开采技术领域，具体涉及一种电驱压裂设备的供电半挂车。
背景技术
在全球的油气田压裂作业现场，传统压裂设备所采用的是动力传动系统的配置方式，即柴油发动机连接变速箱经传动轴驱动压裂柱塞泵工作，该配置模式存在以下缺点：(1)、体积大重量大：柴油机驱动变速箱经传动轴驱动压裂柱塞泵，体积大，重量大，运输受限，功率密度小。(2)、不环保：柴油发动机驱动的压裂设备在井场运行过程中，会产生发动机废气污染和噪音污染，噪音超过105dBA，严重影响周围居民的正常生活。(3)、不经济：柴油发动机驱动的压裂设备，设备初期的采购成本比较高，设备运行时单位功率燃料消耗费用高，发动机和变速箱的日常维护保养费用也很高。鉴于全球的油气开发设备正朝着“低能耗、低噪音、低排放”的方向发展，所以，传统以柴油发动机为动力源的压裂设备的上述缺点从一定程度上阻碍了非常规油气能源的开发进程。
电驱设备取代常规柴油机驱动是一种好的方案，但是常规的发电机供电方案，采用高电压发电机，即需要采用整流变压器给整流单元供电，而整流变压器体积庞大，价格昂贵，接线复杂。由于整流变压器自身的以上特点，在某种程度上，导致了电驱设备中供电部分，体积大，即占地面积大，造价高，接线复杂，大大限制了电驱设备的广泛应用。
为此亟待一种体积小，造价不高，接线简单的电驱压裂设备的供电半挂车。
发明内容
本发明的目的克服现有技术的不足，提供一种电驱压裂设备的供电半挂车，采用燃气涡轮发动机、发电机和整流单元的组合方式，发电机直接发出整流单元所需的绕组形式和电压，节省了常规的整流变压器设备，整流单元与逆变单元之间通过共直流母线连接，使得共直流母线可以分别驱动多个逆变单元，减少了供电线路的接线。高压逆变单元设置在电驱半挂车的鹅颈上，优化了设备的空间布置。整个供电设备，结构更紧凑，占地面积小，接线简单。
本发明的目的是通过以下技术措施达到的：一种电驱压裂设备的供电半挂车，包括供电半挂车体，燃气涡轮发动机，发电机，整流单元和逆变单元，所述燃气涡轮发动机，发电机和整流单元集成在供电半挂车体上，燃气涡轮发动机为1台，发电机为1台，整流单元多组，发电机的一端与燃气涡轮发动机连接，发电机的另一端与整流单元连接，多组整流单元之间并排设置，逆变单元设在电驱半挂车体的鹅颈上，逆变单元为多组，整流单元与逆变单元之间通过共直流母线连接。
进一步地，所述发电机为双绕组发电机。
进一步地，所述发电机直接发出整流单元所需的绕组形式和电压。
进一步地，所述发电机的双绕组相位差为30°，绕组形式为Y-Y型或者D-D型。
进一步地，所述发电机功率在10MVA以上，频率为50--60Hz或者100--120Hz。
进一步地，所述整流单元电压在4000VDC到6500VDC。
进一步地，每个所述逆变单元包括2个逆变器，所述逆变器为三电平逆变器。
进一步地，设在另一半挂车鹅颈上的所述逆变单元为高压逆变单元。
与现有技术相比，本发明的有益效果是：1.采用燃气涡轮发动机、发电机和整流单元的组合方式，发电机直接发出整流单元所需的绕组形式和电压，节省了常规的整流变压器设备。
2.整流单元与逆变单元之间通过共直流母线连接，使得共直流母线可以分别驱动多个逆变单元，减少了供电线路的接线。
3.高压逆变单元设置在电驱半挂车的鹅颈上，优化了设备的空间布置。
4.整个供电设备，结构更紧凑，占地面积小，接线简单。
5.整个供电设备的输出功率大，为大功率的电驱压裂设备提供了有力保障。
下面结合附图和具体实施方式对本发明作详细说明。
附图说明
图1是供电半挂车的结构示意图。
图2是电驱压裂设备的结构示意图。
其中，1.供电半挂车体，2.燃气涡轮发动机，3.发电机，4.整流单元，5.高压逆变单元。
具体实施方式
实施例，如图1至2所示，一种电驱压裂设备的供电半挂车，包括供电半挂车体1，燃气涡轮发动机2，发电机3，整流单元4和逆变单元，所述燃气涡轮发动机2，发电机3和整流单元4集成在供电半挂车体1上，燃气涡轮发动机2为1台，发电机3为1台，整流单元4多组，发电机3的一端与燃气涡轮发动机2连接，发电机3的另一端与整流单元4连接，多组整流单元4之间并排设 置，逆变单元设在电驱半挂车体的鹅颈上，逆变单元为多组，整流单元4与逆变单元之间通过共直流母线连接。所述发电机3为双绕组发电机。所述发电机3直接发出整流单元4所需的绕组形式和电压。该供电半挂车为电驱压裂设备配套的供电半挂车，采用燃气涡轮发动机2、发电机3和整流单元4的组合方式，集成在一个供电半挂车体1上，发电机3直接发出整流单元4所需的绕组形式和电压，这种供电模式，直接省去了常规供电中的整流变压器设备，使得供电半挂车的体积更小。整流单元4与逆变单元之间通过共直流母线连接，使得共直流母线可以分别驱动多个逆变单元，从而减少了供电线路的接线，简化了线路的连接，接线更简单。
设在电驱半挂车体鹅颈上的所述逆变单元为高压逆变单元5。将高压逆变单元5设置在电驱半挂车体的鹅颈上，优化了设备的空间布置，使得整套电驱压裂设备结构更紧凑，占地面积小。
所述发电机3的双绕组相位差为30°，绕组形式为Y-Y型或者D-D型。发电机3发出的交流电压为1600VAC到2300VAC。
所述发电机3功率在10MVA以上，频率为50--60Hz或者100--120Hz，以及所述整流单元4电压在4000VDC以上，进一步的所述整流单元电压在4000VDC到6500VDC。保证了该供电半挂车的输出功率大，从而能够驱动大功率的电驱压裂半挂车。
如图2所示，是该供电半挂车与大功率电驱压裂半挂车的连接示意图。通过共直流母线将供电半挂车体1上的整流单元4与电驱半挂车体鹅颈上的逆变单元相连，每个所述逆变单元为舱体式结构，内设2个逆变器，所述逆变器为三电平逆变器。每个逆变器都可独立驱动一台电动机工作，通过电动机驱动柱 塞泵工作，为大功率电驱设备的供电提供了有力保障。润滑油散热器对柱塞泵的润滑油进行冷却，通过电气控制柜实现电驱压裂半挂车的本地操控。
本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (8)

  1. 一种电驱压裂设备的供电半挂车，包括供电半挂车体，燃气涡轮发动机，发电机，整流单元和逆变单元，其特征在于：所述燃气涡轮发动机，发电机和整流单元集成在供电半挂车体上，燃气涡轮发动机为1台，发电机为1台，整流单元多组，发电机的一端与燃气涡轮发动机连接，发电机的另一端与整流单元连接，多组整流单元之间并排设置，逆变单元设在电驱半挂车体的鹅颈上，逆变单元为多组，整流单元与逆变单元之间通过共直流母线连接。
  2. 根据权利要求1所述的电驱压裂设备的供电半挂车，其特征在于：所述发电机为双绕组发电机。
  3. 根据权利要求2所述的电驱压裂设备的供电半挂车，其特征在于：所述发电机直接发出整流单元所需的绕组形式和电压。
  4. 根据权利要求2所述的电驱压裂设备的供电半挂车，其特征在于：所述发电机的双绕组相位差为30°，绕组形式为Y-Y型或者D-D型。
  5. 根据权利要求1所述的电驱压裂设备的供电半挂车，其特征在于：所述发电机功率在10MVA以上，频率为50--60Hz或者100--120Hz。
  6. 根据权利要求1所述的电驱压裂设备的供电半挂车，其特征在于：所述整流单元电压在4000VDC到6500VDC。
  7. 根据权利要求1所述的电驱压裂设备的供电半挂车，其特征在于：每个所述逆变单元包括2个逆变器，所述逆变器为三电平逆变器。
  8. 根据权利要求1所述的电驱压裂设备的供电半挂车，其特征在于：设在另一半挂车鹅颈上的所述逆变单元为高压逆变单元。
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