CN109882144A - 一种双机双泵电驱压裂半挂车 - Google Patents
一种双机双泵电驱压裂半挂车 Download PDFInfo
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- 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
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- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
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- 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
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- 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
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- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- 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
- F04B17/06—Mobile combinations
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- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/04—Combinations of toothed gearings only
- F16H37/041—Combinations of toothed gearings only for conveying rotary motion with constant gear ratio
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- H—ELECTRICITY
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- H—ELECTRICITY
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- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/328—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising balancing means
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Abstract
本发明公开了一种双机双泵电驱压裂半挂车，包括半挂车，柱塞泵，散热器，电气控制柜，其特征在于：还包括电动机和逆变单元，所述柱塞泵，散热器，电气控制柜，电动机和逆变单元集成在半挂车上，电动机为2台，柱塞泵为2台，散热器为2台，逆变单元设在半挂车的鹅颈上，逆变单元的输出端分别独立驱动2台电动机，2台电动机的另一端分别与柱塞泵连接，散热器对柱塞泵的润滑油进行冷却，通过电气控制柜实现双机双泵电驱压裂半挂车的本地操控。有益效果：采用电动机经传动轴驱动柱塞泵，体积小，经济、节能、环保。对柱塞泵提升了单泵功率，整个压裂设备采用双电动机驱动双泵的设计，大幅度的提升压裂设备的输出功率，更好的满足了使用需求。
Description
技术领域
本发明涉及油气田压裂领域，具体涉及一种双机双泵电驱压裂半挂车。
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动力传动系统的配置方式都是柴油发动机连接变速箱经传动轴驱动压裂柱塞泵工作，也就是说，动力源是柴油发动机，传动装置是变速箱和传动轴，执行元件是压裂柱塞泵。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。
发明内容
本发明的目的克服现有技术的不足，提供一种双机双泵电驱压裂半挂车，采用电动机经传动轴驱动柱塞泵，体积小，经济、节能、环保。对柱塞泵提升了单泵功率，整个压裂设备采用双电动机驱动双泵的设计，大幅度的提升压裂设备的输出功率，更好的满足了使用需求。
本发明的目的是通过以下技术措施达到的：一种双机双泵电驱压裂半挂车，包括半挂车，柱塞泵，散热器，电气控制柜，电动机和逆变单元，所述柱塞泵，散热器，电气控制柜，电动机和逆变单元集成在半挂车上，电动机为2台，柱塞泵为2台，散热器为2台，逆变单元设在半挂车的鹅颈上，逆变单元的输出端分别独立驱动2台电动机，2台电动机的另一端分别与柱塞泵连接，散热器对柱塞泵的润滑油进行冷却，通过电气控制柜实现双机双泵电驱压裂半挂车的本地操控。
进一步地，所述柱塞泵为五缸柱塞泵，所述五缸柱塞泵包括动力端总成、液力端总成和减速箱总成，所述动力端总成采用分段式结构设计，包括曲轴箱体、十字头箱体和间隔架，所述十字头箱体的一端与曲轴箱体通过螺栓连接，所述十字头箱体的另一端与间隔架通过螺栓连接，液力端总成设在间隔架一端，通过螺栓依次穿过间隔架、十字头箱体与曲轴箱体连接，减速箱总成通过螺栓与曲轴箱体连接，所述曲轴箱体内的曲轴采用合金钢锻造而成，包括六个轴颈和五个曲拐，相邻两个轴颈之间设一个曲拐，所述曲拐与曲轴的旋转中心距离为110至160mm。
进一步地，所述柱塞泵的冲程为10″以上。
进一步地，所述柱塞泵的功率为5000hp以上。
进一步地，所述减速箱总成包括行星减速箱和平行级减速箱；所述平行级减速箱和行星级减速箱均为斜齿轮传动；所述行星减速箱包括一个太阳轮、四个行星齿轮和一个齿轮圈，四个行星齿轮组成行星齿轮机构，太阳轮位于行星齿轮机构中心，行星齿轮和相邻的太阳轮、齿轮圈处于常啮合状态；所述平行级减速箱包括小齿轮和大齿轮，小齿轮与输入端相连，大齿轮与行星减速箱太阳轮同轴，其传动比为6.5:1—15:1。
进一步地，所述逆变单元为舱体式结构，内有2套逆变器，2套逆变器分别驱动2台电动机工作。
进一步地，所述双机双泵电驱压裂半挂车配套设置有发电单元，发电单元与逆变单元连接。
进一步地，所述发电单元包括发电机和整流器，整流器的一端与发电机连接，整流器的另一端与逆变单元连接。
进一步地，所述发电单元撬装或半挂车载。
进一步地，所述半挂车的车轴数量为4个以上。
与现有技术相比，本发明的有益效果是：
1、通过电动机驱动柱塞泵，取代了发动机和变速箱驱动柱塞泵。通过采用变频器实现了无级调速，取代了采用变速箱换挡调速。
2、通过采用功率密度在5000hp以上，冲程在10″以上的五缸柱塞泵取代了现有电驱半挂车载的2250hp。
3、通过在一台半挂车鹅颈上高度集成的2台逆变器，以及双电动机和双5000泵，实现了单台设备的泵功率达到10000hp。
4、在其它一台半挂车上高度集成了发电机(30MW)和整流单元，整流后输出直流电压到泵车上，通过泵车鹅颈上的逆变器逆变后直接驱动电动机，节省了变压器设备的投入，实现了单台发电机半挂车可以驱动至少3台双机双泵电驱压裂半挂车。也正因为不需要变压器，所以进一步降低了压裂成套设备的占地面积和重量和设备投入成本。
5、该电驱压裂设备的使用，将大大提高了单机功率密度，降低了井场布置难度，提高了运输方便性。
6、使用电力驱动，单位功率消耗费用降低约50％。
7、全部设备集成在半挂车上，降低了井场布置难度，提高了运输方便性。
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是双机双泵电驱压裂半挂车的结构示意图。
图2是单套(60000hp)电驱压裂设备的组成示意图。
图3为五缸柱塞泵的结构示意图。
图4为五缸柱塞泵中动力端总成结构示意图。
图5为五缸柱塞泵中减速箱总成示意图。
图6为五缸柱塞泵的剖视图。
图7为五缸柱塞泵中连杆机构与十字头机构的连接结构示意图。
图8为五缸柱塞泵中曲轴结构示意图。
图9为五缸柱塞泵中连杆轴瓦结构示意图。
图10为五缸柱塞泵中平行级减速箱结构示意图。
图11为五缸柱塞泵中行星减速箱结构示意图。
其中，1.逆变单元，2.电动机，3.散热器，4.柱塞泵，5.电气控制柜，6.半挂车，7.发电单元，8.动力端总成，9.液力端总成，10.减速箱总成，11.曲轴箱体，12.十字头箱体，13.间隔架，14.曲轴，15.轴颈，16.曲拐，17.圆柱滚子轴，18.阀箱，19.柱塞，20.轴承座，21.前端板，22.盖板，23.支腿，24.滑轨，25.支撑柱，26.连杆盖，27.连杆轴瓦，28.连杆体，29.十字头，30.十字头压盖，31.十字头连接螺钉，32.十字头导板，33.导板螺栓，34.拉杆，35.卡箍，36.行星减速箱，37.平行级减速箱，38.翻边结构，39.大齿轮，40.小齿轮，41.行星齿轮，42.齿轮圈，43.太阳轮。
具体实施方式
实施例，如图1至11所示，一种双机双泵电驱压裂半挂车，包括半挂车6，柱塞泵4，散热器3，电气控制柜5，电动机2和逆变单元1，所述柱塞泵4，润滑油散热器3，电气控制柜5，电动机2和逆变单元1集成在半挂车6上，所述半挂车6的车轴数量为4个以上。逆变单元1设在半挂车6的鹅颈上，电动机2的一端与逆变单元1连接，电动机2的另一端与柱塞泵4连接，散热器3对柱塞泵4的润滑油进行冷却，通过电气控制柜5实现双机双泵电驱压裂半挂车的本地操控，电动机2为2台，柱塞泵4为2台，散热器3为2台。本申请经过合理匹配电动机2和柱塞泵4，使得一台半挂车6可以安装2台电动机2和2台柱塞泵4，所述柱塞泵4为10″以上冲程的五缸柱塞泵4，双泵的总功率达到10000hp。通过电动机2驱动柱塞泵4，取代了发动机和变速箱驱动柱塞泵4。通过采用变频器实现了无级调速，取代了采用变速箱换挡调速。
所述逆变单元1为舱体式结构，内有2套逆变器，可以完成从接入高压直流电到逆变为交流电，2套逆变器分别驱动半挂车6上的2台电动机2工作。
所述双机双泵电驱压裂半挂车配套设置有发电单元7，发电单元7与逆变单元1连接。
所述发电单元7包括发电机和整流器，整流器的一端与发电机连接，整流器的另一端与逆变单元1连接。该发电机无需变压器，发电机输出的电流经整流后，输出直流电压到双机双泵电驱压裂半挂车上，然后由双机双泵电驱压裂半挂车上的逆变单元1逆变为交流，驱动电动机2。上述发电单元7，因为不需要变压器，所以进一步降低了压裂成套设备的占地面积和重量和设备投入成本。发电机的功率不限于30MW。
所述发电单元7撬装或半挂车载。
所述五缸柱塞泵4包括动力端总成8、动力端总成9和减速箱总成10，所述动力端总成8采用分段式结构设计，分段式设计使动力端总成8整体结构紧凑、加工制造更为容易，整泵的装配和后期维护也更为方便，同时也降低了加工成本。动力端总成8包括曲轴箱体11、十字头箱体12和间隔架13，所述十字头箱体12的一端与曲轴箱体11通过六角头螺栓连接，所述十字头箱体12的另一端与间隔架13通过螺栓连接，动力端总成9设在间隔架13一端，通过螺栓依次穿过间隔架13、十字头箱体12与曲轴箱体11连接，减速箱总成10通过螺栓与曲轴箱体11连接，所述曲轴箱体11内的曲轴14采用合金钢锻造而成，包括六个轴颈15和五个曲拐16，相邻两个轴颈15之间设一个曲拐16，即五缸结构设计，采用五缸结构设计增加了柱塞泵输出排量，同时与三缸泵相比，五缸泵作业平稳无振动，可以减少整泵的振动，延长使用寿命；所述曲拐16与曲轴14的旋转中心距离为110至160mm，保证柱塞泵可以输出更高的压力，即为长冲程提供技术支持，其冲程可达到10in，可实现大排量的作业需求，同时降低泵的冲次，提高各零部件的使用寿命。
动力端总成9包括阀箱18和柱塞19，柱塞19设在阀箱18内，曲轴箱体11采用钢板焊接而成，主要是将六个轴承座20和前端板21、盖板22、支腿23等组合后焊接到一起，焊接完成后对轴承座20及前端板21进行精加工而成。十字头箱体12采用钢板焊接而成，十字头箱体12上固定有圆弧形滑轨24，圆弧形滑轨24采用合金钢锻造而成；间隔架13上具有拱形结构支撑柱25，提高支撑强度；十字头箱体12及间隔架13上留有通孔，液力端阀箱18通过螺栓依次穿过间隔架13、十字头箱体12与曲轴箱体11连接。轴颈15上安装圆柱滚子轴17，圆柱滚子轴17外圈安装在轴承座20上。
所述十字头箱体12内设有十字头机构，在曲轴箱体11与十字头箱体12内设有连杆机构，连杆机构一端与曲轴14连接，连杆机构另一端与十字头机构连接，连杆机构包括连杆盖26、连杆轴瓦27和连杆体28，连杆盖26与连杆体28通过螺栓连接，连杆轴瓦27位于连杆盖26与连杆体28连接形成的圆柱形空间内，连杆轴瓦27两侧为翻边结构38，宽边结构宽径比大，能够实现较高的承载能力，而且定位效果好。十字头机构包括十字头29、十字头压盖30、十字头连接螺钉31、十字头导板32、导板螺栓33，连杆体28、连杆盖26、十字头29和十字头压盖30采用合金钢锻造而成，连杆机构一端与曲拐16连接，另一端通过十字头压盖30与十字头29连接；十字头导板32通过导板螺栓33固定于十字头29上，十字头导板32为圆弧形，表面有油槽；十字头29通过拉杆34和卡箍35与动力端总成9的柱塞19连接，进一步的，十字头29与拉杆34之间通过螺钉连接。
所述减速箱总成输出端与曲轴14连接，减速箱总成包括行星减速箱36和平行级减速箱37，所述平行级减速箱37和行星级减速箱29均为斜齿轮传动，所述行星减速箱36包括一个太阳轮43、四个行星齿轮41和一个齿轮圈42，四个行星齿轮41组成行星齿轮机构，太阳轮43位于行星齿轮机构中心，行星齿轮41和相邻的太阳轮43、齿轮圈42处于常啮合状态；所述平行级减速箱37包括大齿轮39和小齿轮40，小齿轮40与输入端相连，大齿轮39与行星减速箱36太阳轮43同轴；输入端输入转速，经小齿轮40传递给大齿轮39实现一级减速，通过大齿轮39传递给太阳轮43，太阳轮43传递到行星齿轮41实现二级减速，从而获得大传动比，其传动比可以达到6.5:1—15:1；行星级减速箱29采用四个均匀分布的行星齿轮41同时传递运动和动力，四个行星轮34因公转而产生的离心惯性力与齿廓间反作用力的径向分力相互平衡抵消，使主轴受力减小，实现大功率传递。大速比可以降低输入扭矩，提高减速箱的使用寿命，为满足涡轮发动机驱动和电机驱动的匹配提供了有效保障；大的减速比可以降低柱塞泵的冲次，降低各旋转零部件的疲劳循环次数，可以延长各零部件的使用寿命；同时减速箱总成的输入角度可以根据输入要求进行调整，可以满足多角度调整，适应多种安装需求。
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 (10)
1.一种双机双泵电驱压裂半挂车，包括半挂车，柱塞泵，散热器，电气控制柜，其特征在于：还包括电动机和逆变单元，所述柱塞泵，散热器，电气控制柜，电动机和逆变单元集成在半挂车上，电动机为2台，柱塞泵为2台，散热器为2台，逆变单元设在半挂车的鹅颈上，逆变单元的输出端分别独立驱动2台电动机，2台电动机的另一端分别与柱塞泵连接，散热器对柱塞泵的润滑油进行冷却，通过电气控制柜实现双机双泵电驱压裂半挂车的本地操控。
2.根据权利要求1所述的双机双泵电驱压裂半挂车，其特征在于：所述柱塞泵为五缸柱塞泵，所述五缸柱塞泵包括动力端总成、液力端总成和减速箱总成，所述动力端总成采用分段式结构设计，包括曲轴箱体、十字头箱体和间隔架，所述十字头箱体的一端与曲轴箱体通过螺栓连接，所述十字头箱体的另一端与间隔架通过螺栓连接，液力端总成设在间隔架一端，通过螺栓依次穿过间隔架、十字头箱体与曲轴箱体连接，减速箱总成通过螺栓与曲轴箱体连接，所述曲轴箱体内的曲轴采用合金钢锻造而成，包括六个轴颈和五个曲拐，相邻两个轴颈之间设一个曲拐，所述曲拐与曲轴的旋转中心距离为110至160mm。
3.根据权利要求2所述的双机双泵电驱压裂半挂车，其特征在于：所述柱塞泵的冲程为10″以上。
4.根据权利要求3所述的双机双泵电驱压裂半挂车，其特征在于：所述柱塞泵功率为5000hp以上。
5.根据权利要求2所述的双机双泵电驱压裂半挂车，其特征在于：所述减速箱总成包括行星减速箱和平行级减速箱；所述平行级减速箱和行星级减速箱均为斜齿轮传动；所述行星减速箱包括一个太阳轮、四个行星齿轮和一个齿轮圈，四个行星齿轮组成行星齿轮机构，太阳轮位于行星齿轮机构中心，行星齿轮和相邻的太阳轮、齿轮圈处于常啮合状态；所述平行级减速箱包括小齿轮和大齿轮，小齿轮与输入端相连，大齿轮与行星减速箱太阳轮同轴，其传动比为6.5:1—15:1。
6.根据权利要求1所述的双机双泵电驱压裂半挂车，其特征在于：所述逆变单元为舱体式结构，内有2套逆变器，2套逆变器分别驱动2台电动机工作。
7.根据权利要求1所述的双机双泵电驱压裂半挂车，其特征在于：所述双机双泵电驱压裂半挂车配套设置有发电单元，发电单元与逆变单元连接。
8.根据权利要求7所述的双机双泵电驱压裂半挂车，其特征在于：所述发电单元包括发电机和整流器，整流器的一端与发电机连接，整流器的另一端与逆变单元连接。
9.根据权利要求7所述的双机双泵电驱压裂半挂车，其特征在于：所述发电单元撬装或半挂车载。
10.根据权利要求1所述的双机双泵电驱压裂半挂车，其特征在于：所述半挂车的车轴数量为4个以上。
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| CN116591651A (zh) | 2023-08-15 |
| US20200332784A1 (en) | 2020-10-22 |
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