CN108443099A - A kind of compound gearing for pressure break plunger pump - Google Patents
A kind of compound gearing for pressure break plunger pump Download PDFInfo
- Publication number
- CN108443099A CN108443099A CN201810397174.4A CN201810397174A CN108443099A CN 108443099 A CN108443099 A CN 108443099A CN 201810397174 A CN201810397174 A CN 201810397174A CN 108443099 A CN108443099 A CN 108443099A
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- pump
- gear
- valve
- speed reducing
- input shaft
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000001360 synchronised effect Effects 0.000 claims abstract description 16
- 239000000446 fuel Substances 0.000 claims description 13
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
Abstract
The present invention relates to a kind of compound gearings for pressure break plunger pump, including babinet, fluid torque-converter, planetary gear speed reducing mechanism, friction disc brake device assembly, Comprehensive Control valve, deceleration mechanism II, Electric Actuator；Wherein, fluid torque-converter includes input shaft I, trilogy supply oil pump, synchronous ring, guide wheel, turbine, turbine wheel shaft, pump impeller；The sun gear of planetary gear speed reducing mechanism is coaxial driven in turbine wheel shaft, and gear ring is contacting and separating with the friction plate in friction disc brake device assembly under hydraulic control；The planet carrier connection of planetary gear speed reducing mechanism and the input shaft II of drive deceleration mechanism II；Comprehensive Control valve includes valve body, relief valve spool, electromagnetic switch valve；Electric Actuator is via leading screw link mechanism and synchronous ring shift fork；Shift fork drives adjustable guide vane to be turned round around own axes.The device solves the problems, such as to lack pressure break plunger pump dedicated transmission in the prior art, has positive technical meaning by completely new structure design.
Description
Technical field
The present invention relates to a kind of compound gearings for pressure break plunger pump, belong to petroleum drilling and mining and process equipment neck
Domain.
Background technology
In current oil drilling and extracting equipment field, plunger pump is important component；Wherein with F1300, F1600 drilling pump,
Five cylinder pressure break plunger pump of SQP2000, SQP2800 be representative reciprocating plunger pump be equipment measure larger plunger pump type it
One.
In actual use, it because the actual condition of drilling and Well Killing Process needs, needs to carry out wide scope to plunger pump
Speed governing.
It is universal at present to be configured to by taking F1300 drilling pumps as an example:Diesel engine+tire formula clutch (air bag clutch)+machinery
Speed reducer is driven by belt drilling pump or the anti-vehicle reduction box of diesel engine+fluid-flywheel clutch through cardan shaft driving drilling pump.It is using
When " driller's method kill-job " operation, for ease of the control of throttle valve in Well Killing Process and vertical pressure, the pump speed of usual drilling pump takes normally
Creep into the 1/2~1/4 of pump speed.For the low pump impulse of realization, the measure generally taken at present includes mainly：The diesel engine slow-speed of revolution operates
（It is adjusted to 800~1000rpm by rated speed 1300rpm）, remove Jie's bar of three-cylinder plunger pump two of which cylinder.This operation
The drawbacks of mode is brought:Diesel engine is unsuitable for long-time low speed, large load operation, for a long time can be to diesel engine under this operating mode
Cause harmful effect；Frequently dismounting cylinder sleeve of drilling pump Jie bar can bring a large amount of heavy physical labour to mudman.Although fluid power is even
The anti-vehicle reduction box of clutch has certain speed-regulating type energy, but the performance characteristics based on variable speed fluid coupling are (with permanent torque class
Equipment matches, and speed adjustable range recommends 70%~100%), it cannot also meet the requirement of wide-range-timing.
It is universal at present to be configured to by taking five cylinder pressure break plunger pumps of SQP2800 as an example:Diesel engine+multi gear (fluid power) machinery becomes
Fast case is through cardan shaft driving plunger pump.Multi gear (fluid power) mechanical gear box, which typically represents, to be had：TWIN DISC TA90-8501/
(9 grades of 8FLW-2302 gearboxes）, (9 grades of 9832 OFS gearboxes of Ai Lixun）, (7 grades of CAT TH55-E70 gearboxes）.Due to mesh
Preceding unspecial, for the mating demand of fracturing pump special gear box, thus use high-power mine vehicle gearbox application
It is driven in fracturing pump.Matched calculating, 4 grades of above three sections of gearboxes and the above gear should not use because at 4 grades and with
There is not applicable design " more than needed " far more than its allowable rotating speed in the rotating speed of upper gear plunger pump.On the other hand, it is acidified
Pressure break is an extremely complex and changeable operating mode.More alternations are pumped under complex geological condition, in fracturing work, more impacts carry
Lotus；It is general at present to take diesel engine reduction of speed, gearbox drop to ensure fracturing work safety, being to ensure fracturing pump not " superpressure " more
The program linkage pattern of shelves.This mode adaptation is poor, cannot meet the job requirements of " continuous high-pressure power ".
Therefore, a kind of dedicated transmission that can be more suitable for reciprocating plunger pump speed governing driving is designed, is art technology
Personnel's urgent problem to be solved.
Invention content
In the prior art, reciprocating plunger pump lacks dedicated transmission, and the non-dedicated speed regulation device of use exists and bavin
The problem of oil machine characteristic is mismatched, is difficult to adapt to operating mode of the reciprocating plunger pump in drilling and Well Killing Process；To solve this
One problem, the present invention completely newly provide a kind of compound gearing for pressure break plunger pump, for past in drilling Well Killing Process
Oscillating plunger pumps stepless speed regulation driving.
The present invention uses following technical proposals：
A kind of compound gearing for pressure break plunger pump, which is characterized in that including：Babinet, fluid torque-converter, planetary reduction gear
Mechanism, friction disc brake device assembly, Comprehensive Control valve, deceleration mechanism II, Electric Actuator；
Wherein, the fluid torque-converter includes input shaft I, trilogy supply oil pump, synchronous ring, guide wheel, turbine, turbine wheel shaft, pump impeller；Institute
State the input shaft that input shaft I is entire transmission device；The trilogy supply oil pump is set to fluid torque-converter input terminal end face, two pumps
It is connected to fluid torque-converter working chamber, another pump is connected to friction disc brake device assembly oil-feed port by Comprehensive Control valve；It is described to lead
Wheel is adjustable shutter, including stator ring blade, adjustable guide vane；The synchronous ring be installed on trilogy supply oil pump outer rim and
It can be turned round around trilogy supply oil pump；
The sun gear of the planetary gear speed reducing mechanism is coaxially connected and driven in the turbine wheel shaft, and gear ring and friction disc brake device are total
Friction plate in is contacting and separating under hydraulic control；
The planet carrier connection of the planetary gear speed reducing mechanism and the input shaft II of drive deceleration mechanism II；Deceleration mechanism II it is defeated
Shaft is the output shaft of entire transmission device；
The Comprehensive Control valve is installed at friction disc brake device assembly oil-feed port, including valve body, relief valve spool, electromagnetic switch
Valve, relief valve spool are arranged in parallel with electromagnetic switch valve at Comprehensive Control valve oil inlet；The outlet of the relief valve spool passes through
Pipeline connection lubricating system built in babinet；
The Electric Actuator is more revolution intelligent electric executers, and the synchronous ring is driven via leading screw link mechanism；Institute
It states synchronous ring and connects multigroup shift fork；Every group of shift fork drives 1 adjustable guide vane to be turned round around own axes；All adjustable guide wheel blades
The revolution of piece is synchronization action.
Preferably, the friction disc brake device assembly is multiple-piece Wet-type friction slice brake assembly.
Or it is preferred, the deceleration mechanism II is gear type dead axle single-stage speed reducing mechanism.
Or it is preferred, the trilogy supply oil pump is star arrangement, including shell, driving gear, 3 driven gears；Wherein,
Shell is equipped with oil inlet passage, 3 fuel supply chambers, and driving gear is coaxial and driven in the input shaft I, and driven gear is respectively arranged on
In fuel supply chamber.
The present invention has the following advantages that：
（1）Fluid torque-converter, planetary gear speed reducing mechanism, deceleration mechanism II are set to same babinet by the present invention, are used integration and are set
Meter, keeps apparatus structure compact, occupies little space；
（2）Adjustable guide vane is adjusted and is controlled using more revolution intelligent electric executers, it is easy to accomplish permanent pump impulse
（Constant flow）, constant pressure or computer program control to adjust；
（3）The characteristics of based on fluid torque-converter adaptive characteristic, is more suitable for more alternations, the operating mode operation of more shock loadings needs
It asks；
（4）The characteristics of based on hydraulic power Flexible Transmission, can reach the transmission quality for promoting entire transmission system and to start
Machine, transmission system, working machine provide good protection, lifting system working life；
（5）Characteristic, advantage based on guide vane adjustable torque converter hydraulic power, may be implemented wide scope (20%~
100%) stepless speed regulation, efficient, with permanent torque class equipment matched well.
Description of the drawings
Fig. 1 is structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the left view structural representation of Fig. 1；
Fig. 3 is 21 mounting structure schematic diagram of Comprehensive Control valve in the embodiment of the present invention；
Fig. 4 is middle 19 structural schematic diagram of trilogy supply oil pump in the embodiment of the present invention；
Fig. 5 is the left view schematic cross-sectional view of Fig. 4；
Fig. 6 is 21 structural schematic diagram of Comprehensive Control valve in the embodiment of the present invention；
Fig. 7 is that the right side of Fig. 6 regards schematic cross-sectional view 1；
Fig. 8 is that the right side of Fig. 6 regards schematic cross-sectional view 2；
Wherein：1. fluid torque-converter, 2. planetary gear speed reducing mechanisms, 3. deceleration mechanisms II, 4. Electric Actuator, 5. babinets, 6. inputs
Axis I, 7. pump impellers, 8. turbines, 9. stator ring blades, 10. adjustable guide vanes, 11. turbine wheel shafts, 12. sun gears, 13. frictions
Piece brake assembly, 14. planet carriers, 15. gear rings, 16. leading screw link mechanisms, 17. synchronize ring, 18. shift forks, 19. trilogy supplies oil
Pump, 20. oil filters, 21. Comprehensive Control valves, 22. shells, 23. driving gears, 24. driven gears, 25. valve bodies, 26. overflow valves
Spool, 27. gear shift valve cores, 28. solenoid valves.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1 and Figure 2, the present embodiment is a kind of compound gearing for pressure break plunger pump, including：Babinet 5,
Fluid torque-converter 1, friction disc brake device assembly 13, Comprehensive Control valve 21, deceleration mechanism II 3, electronic is held planetary gear speed reducing mechanism 2
Row device 4；
Wherein, fluid torque-converter 1 described in the present embodiment is guide vane adjustable torque converter 1, including input shaft I 6, three
Alliance oil pump 19, synchronous ring 17, guide wheel, turbine 8, turbine wheel shaft 11, pump impeller 7；The input shaft I 6 is the defeated of entire transmission device
Enter axis；The trilogy supply oil pump 19 is set to 1 input terminal end face of fluid torque-converter, carries oil filter 20.
Guide vane adjustable torque converter 1 is to have the normal structure being expressly recited on mechanical handbook.
The guide wheel is adjustable shutter, including stator ring blade 9, adjustable guide vane 10；The synchronous ring 17 is pacified
It can turn round loaded on 19 outer rim of trilogy supply oil pump and around trilogy supply oil pump 19；
The sun gear 12 of the planetary gear speed reducing mechanism 2 is coaxially connected and driven in the turbine wheel shaft 11；
The friction disc brake device assembly 13 is multiple-piece Wet-type friction slice brake assembly, including in cylinder sleeve, piston and multi-disc,
External tooth friction plate；Wherein cylinder sleeve is connect by connecting key with fixed babinet, and external tooth friction plate passes through external tooth and fixed cylinder sleeve
It is connected, internal toothed friction plate is contacting and separating with gear ring 15 under hydraulic control by internal tooth；The inside and outside tooth friction plate of multi-disc
It is installed along axis interval；When oil-filled under electromagnetic switch valve control of the friction disc brake device assembly 13 in Comprehensive Control valve 21,
Piston in an axial direction brake by pressing friction piece, gear ring 15 rubbed, cylinder sleeve, babinet, and planetary gear speed reducing mechanism 2 is in " in shelves " at this time
State；When friction disc brake device assembly 13 empties oil under electromagnetic switch valve control, friction plate is disengaged with gear ring 15, tooth
Circle 15 rotates freely, and planetary gear speed reducing mechanism 2 is in " neutral gear " state at this time；Multiple-piece Wet-type friction slice brake is published
Existing mature technology.
The deceleration mechanism II 3 is gear type dead axle single-stage speed reducing mechanism, including input shaft II, coaxial with input shaft II
Driving gear, driven gear, the output shaft coaxial with driven gear；The planet carrier 14 of the planetary gear speed reducing mechanism 2 is connected and is driven
The input shaft II of dynamic deceleration mechanism II 3；The output shaft of deceleration mechanism II 3 is the output shaft of entire transmission device；
The Electric Actuator 4 is more revolution intelligent electric executers 4, and the synchronous ring is driven via leading screw link mechanism 16
17；The synchronous ring 17 connects multigroup shift fork 18；Every group of shift fork 18 drives 1 adjustable guide vane 10 to be turned round around own axes；
All the revolution of adjustable guide vane 10 is synchronization action.
As shown in Figure 4, Figure 5, the setting of the trilogy supply oil pump 19 is primarily to meet complete machine hydraulic power, low pressure profit
The requirement of the systems fuel feeding such as cunning, high voltage control is star arrangement, including 23,3 shell 22, driving gear driven gears 24；Its
In, shell 22 is equipped with oil inlet passage, 3 fuel supply chambers, and driving gear 23 is coaxially connected with input shaft I 6 by spline and is inputted
Axis I 6 drives, and driven gear 24 is respectively arranged in fuel supply chamber.3 driven gears 24 are combined with driving gear 23 respectively, cooperation
Fuel supply chamber, forms three oil feed pumps relatively independent and that shell 22 assembles altogether, and two pumps are that 1 working chamber of fluid torque-converter supplies
Oil, another pump are friction disc brake device assembly 13 and lubricating system fuel feeding by Comprehensive Control valve 21.
The specific work process of the present embodiment is as follows：
Kinetic current：
Power drives pump impeller 7 through input shaft I 6, and pump impeller 7 pushes the work forward oil cycle, and mechanical energy is converted into working oil kinetic energy；When with
When the working oil of liquid kinetic energy flows through turbine 8,8 blade of liquid flow impact turbine is allowed to and 7 rotating Vortex of pump impeller, working oil kinetic energy
It is converted into mechanical energy again；Working oil after release kinetic energy is again flowed by turbine 8, stator ring blade 9, adjustable guide vane 10
Pump impeller 7 starts to recycle next time；Thus working oil establishes pump impeller 7, turbine 8, stator ring blade 9, adjustable guide vane 10
Between cycle in cycles, thus input, outlet chamber realize the flexible of energy in the case of no any mechanical connection and pass
It passs.
Power drives the sun gear 12 of planetary gear speed reducing mechanism 2 through turbine 8, turbine wheel shaft 11；When multiple-piece Wet-type friction slice system
When dynamic device assembly 13 is latched, gear ring 15 is braked, and power is exported via planet carrier 14, and final power is transmitted via deceleration mechanism II 3
To driven equipment；When multiple-piece Wet-type friction slice brake assembly 13 unlocks, gear ring 15 rotates freely, power without output,
Transmission device is in neutral state.
Control stream：
Electric Actuator 4 drives synchronous ring 17 via leading screw link mechanism 16；Synchronous ring 17 drives adjustable guide wheel via shift fork 18
Blade 10 turns round.The angle that corresponding adjustable guide vane 10 rotates is different, and torque-converters has different characteristics.Pass through adjustable guide wheel blade
Rotation, change the established angle and its flow area of blade profile, to change capable of holding for torque-converters, reach adjust 8 rotating speed of turbine
Purpose, the final control for realizing variable speed.
Working oil oil stream
Working oil flows into trilogy supply oil pump 19 via oil filter 20；Two of which is pumped to torque-converters working chamber fuel feeding, working oil warp
By flowing back to fuel tank after torque-converters working chamber, external oil cooler；Another list is pumped to high voltage system fuel feeding, working oil
The oil circuit as built in pump discharge via babinet 5 flows through Comprehensive Control valve 21；
In Comprehensive Control valve 21, since " level pressure " of overflow valve acts on, it is " high that working oil is divided into when flowing through relief valve spool 26
Pressure ", " low pressure " two oil circuits；Wherein low pressure oil is sent to lubricating system through pipeline built in babinet 5；High pressure oil is via shift valve valve
Core 27 is sent to multiple-piece Wet-type friction slice brake assembly 13, the total locking of multiple-piece Wet-type friction slice brake, unlock by
Solenoid valve 28 is responsible for control；Electromagnetic switch valve receives the switching signal of central controller, obtain it is electric, be friction disc brake device assembly 13
Fuel feeding makes friction plate be connect because of frictional force with gear ring 15, and transmission device is in power output state；Electromagnetic switch valve is in center
The lower power-off of signal control of controller, friction plate and the gear ring 15 of friction disc brake device assembly 13 disengage, at transmission device
In " neutral gear " state；Part working oil（Low pressure oil）Oil is flowed back to gear lubrication system fuel feeding and finally via overflow valve
Case.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
A variety of modifications of embodiment will be apparent to those skilled in the art, it is as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention, is not described in detail
The part presented with partial enlargement is the prior art, herein without repeating.Therefore, the present invention is not intended to be limited to herein
Shown in these embodiments, and be to fit to the widest range consistent with principles disclosed herein and feature.
Claims (4)
1. a kind of compound gearing for pressure break plunger pump, which is characterized in that including：Babinet（5）, fluid torque-converter（1）、
Planetary gear speed reducing mechanism（2）, friction disc brake device assembly（13）, Comprehensive Control valve（21）, deceleration mechanism II（3）, Electric Actuator
（4）；
Wherein, the fluid torque-converter（1）Including input shaft I（6）, trilogy supply oil pump（19）, synchronous ring（17）, guide wheel, turbine
（8）, turbine wheel shaft（11）, pump impeller（7）；The input shaft I（6）For the input shaft of entire transmission device；The trilogy supply oil pump
（19）Set on fluid torque-converter（1）Input terminal end face, two pump connection fluid torque-converters（1）Working chamber, another pump pass through comprehensive
Close control valve（21）It is connected to friction disc brake device assembly（13）Oil-feed port；The guide wheel is adjustable shutter, including stator ring
Blade（9）, adjustable guide vane（10）；The synchronous ring（17）It is installed on trilogy supply oil pump（19）Outer rim and can be around trilogy supply
Oil pump（19）Revolution；
The planetary gear speed reducing mechanism（2）Sun gear（12）It is coaxially connected and driven in the turbine wheel shaft（11）, gear ring（15）
With friction disc brake device assembly（13）In friction plate be contacting and separating under hydraulic control；
The planetary gear speed reducing mechanism（2）Planet carrier（14）Connect simultaneously drive deceleration mechanism II（3）Input shaft II；Slow down
Mechanism II（3）Output shaft be entire transmission device output shaft；
The Comprehensive Control valve（21）It is installed on friction disc brake device assembly（13）At oil-feed port, including valve body（25）, overflow valve
Spool, electromagnetic switch valve, relief valve spool are arranged in parallel with electromagnetic switch valve in Comprehensive Control valve（21）At oil inlet；It is described to overflow
The outlet of valve core is flowed through babinet（5）Built-in pipeline connection lubricating system；
The Electric Actuator（4）To turn round intelligent electric executer more（4）, via leading screw link mechanism（16）Described in driving
Synchronous ring（17）；The synchronous ring（17）Connect multigroup shift fork（18）；Every group of shift fork（18）Drive 1 adjustable guide vane（10）
It is turned round around own axes；All adjustable guide vanes（10）Revolution be synchronization action.
2. the compound gearing according to claim 1 for pressure break plunger pump, which is characterized in that the friction plate system
Dynamic device assembly（13）For multiple-piece Wet-type friction slice brake assembly（13）.
3. the compound gearing according to claim 1 for pressure break plunger pump, which is characterized in that the deceleration mechanism
Ⅱ（3）For gear type dead axle single-stage speed reducing mechanism.
4. the compound gearing according to claim 1 for pressure break plunger pump, which is characterized in that the trilogy supply oil
Pump（19）For star arrangement, including shell（22）, driving gear（23）, 3 driven gears（24）；Wherein, shell（22）It is equipped with
Oil inlet passage, 3 fuel supply chambers, driving gear（23）It is coaxial and driven in the input shaft I（6）, driven gear（24）Respectively
In fuel supply chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810397174.4A CN108443099B (en) | 2018-04-28 | Composite transmission device for fracturing plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810397174.4A CN108443099B (en) | 2018-04-28 | Composite transmission device for fracturing plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108443099A true CN108443099A (en) | 2018-08-24 |
| CN108443099B CN108443099B (en) | 2024-05-03 |
Family
ID=
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11680474B2 (en) | 2019-06-13 | 2023-06-20 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus and control method thereof, fracturing system |
| US11746636B2 (en) | 2019-10-30 | 2023-09-05 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus and control method thereof, fracturing system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1186902A (en) * | 1966-03-24 | 1970-04-08 | Borg Warner | Planetary Transmission Mechanism |
| CN2622485Y (en) * | 2003-05-30 | 2004-06-30 | 贵州凯星液力传动机械有限公司 | Hydraulic speed variator |
| JP2006112460A (en) * | 2004-10-12 | 2006-04-27 | Toyota Motor Corp | Power transmission device and radial piston pump |
| CN101260933A (en) * | 2008-04-24 | 2008-09-10 | 吉林大学 | Hydraulic mechanical type automatic gear shifting system |
| CN208169068U (en) * | 2018-04-28 | 2018-11-30 | 中国石油天然气集团有限公司 | A kind of compound gearing for pressure break plunger pump |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1186902A (en) * | 1966-03-24 | 1970-04-08 | Borg Warner | Planetary Transmission Mechanism |
| CN2622485Y (en) * | 2003-05-30 | 2004-06-30 | 贵州凯星液力传动机械有限公司 | Hydraulic speed variator |
| JP2006112460A (en) * | 2004-10-12 | 2006-04-27 | Toyota Motor Corp | Power transmission device and radial piston pump |
| CN101260933A (en) * | 2008-04-24 | 2008-09-10 | 吉林大学 | Hydraulic mechanical type automatic gear shifting system |
| CN208169068U (en) * | 2018-04-28 | 2018-11-30 | 中国石油天然气集团有限公司 | A kind of compound gearing for pressure break plunger pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11680474B2 (en) | 2019-06-13 | 2023-06-20 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus and control method thereof, fracturing system |
| US11746636B2 (en) | 2019-10-30 | 2023-09-05 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Fracturing apparatus and control method thereof, fracturing system |
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