CN105840177A - Self-contained liquid plunger driven rubber bag collector for well logging - Google Patents
Self-contained liquid plunger driven rubber bag collector for well logging Download PDFInfo
- Publication number
- CN105840177A CN105840177A CN201610218785.9A CN201610218785A CN105840177A CN 105840177 A CN105840177 A CN 105840177A CN 201610218785 A CN201610218785 A CN 201610218785A CN 105840177 A CN105840177 A CN 105840177A
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- China
- Prior art keywords
- short circuit
- liquid storage
- liquid
- current collector
- human body
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- 239000007788 liquid Substances 0.000 title claims abstract description 116
- 238000003860 storage Methods 0.000 claims abstract description 52
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 239000010985 leather Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 210000002445 nipple Anatomy 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
-
- 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
- E21B47/00—Survey of boreholes or wells
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Transmission Devices (AREA)
Abstract
The well logging uses the collector of rubber bag driven by plunger with liquid. The reliability and the current collection degree of the current collector can be improved, and the device is suitable for horizontal wells with low liquid production and low flow rate. The leather bag collector short circuit comprises a fluid bypass short section and a rubber leather bag, the rubber leather bag is connected to the outer side wall of the oil pipe, the fluid bypass short section is connected to the inner side of the oil pipe, a liquid storage channel is arranged inside the fluid bypass short section, and the rubber leather bag is communicated with a liquid storage cavity in the plunger driving liquid storage cavity short circuit through the liquid storage channel; the plunger driving liquid storage cavity short joint comprises a liquid storage cavity with an opening at one end and a liquid pushing piston for sealing the opening end of the liquid storage cavity, and the middle part of the liquid pushing piston is in threaded connection with a screw rod in the motor driving short joint; the motor drive short circuit comprises a motor and a lead screw connected to an output shaft of the motor. The effect is showing, operation and convenient to use and practicality are strong.
Description
Technical field
The invention belongs to oil production equipment field, relate to a kind of current collector, specifically well logging is with carrying liquid plunger type rubbery human body current collector.
Background technology
At present, external horizontal well liquid producing profile log technology with non-collective flow, continuously be measured as main, it is adaptable to high yield, the horizontal well of blowing, be not suitable for domestic accounting for low production fluid machine water acquisition horizontal well in absolute majority.Domestic horizontal well liquid producing profile log mainly uses afflux logging method based on traction apparatus conveying technique, also been proposed a kind of new modular water horizontal well afflux logging method based on oil pipe conveying technique in recent years；The current collecting method of domestic production well logging mainly has two kinds: umbrella-type current collecting method (CN 201020611183.8) and ball formula current collecting method (CN201110347614.3), umbrella-type current collector has the advantage that reliability is high, the horizontal well afflux logging method being currently based on traction apparatus conveying technique all uses this current collector, but due to the impact that the instrument that there is gap between umbrella muscle and the sleeve pipe of current collecting umbrella and logger own wt causes is the most placed in the middle, the wastage causing umbrella-type current collector is bigger than normal, it is impossible to realize the accurate measurement of each interval fluid under low yield Horizontal Well；Ball formula current collector has the advantage that collection mobility is high, but its well logging reliability and success rate are on the low side, because tradition ball formula current collector is during going into the well, ball easily scratches, additionally, due to grasping the bad time to ball suction liquid, and the easy explosion of ball；The patent CN201110347614.3(Telescopic rubber ball current collector of PetroChina Company Ltd.) propose a kind of Telescopic rubber ball current collector being applied to peupendicular hole, this current collector is to realize the glutted of ball by the liquid being arranged in the pump valve extraction well bottom current collector, but there is following two shortcoming in this mode: the liquid in first well is impure more, and inlet or liquid-transport pipe-line are easily blocked by impurity particle；By secondary speed, it is two owing to can only judge whether ball is beaten full, this be easy to be exploded by ball due to erroneous judgement by the way of artificial judgement, and the two factor has had a strong impact on the reliability of rubber ball current collector.
Summary of the invention
In order to solve the problems referred to above, improve reliability and the collection mobility of current collector, the present invention aims at modular water horizontal well afflux logging method based on oil pipe conveying technique, devise a kind of effectively by the measurement space advantage of oil pipe logging module, it is adaptable to low production fluid, low flow velocity horizontal well its concrete technical scheme of current collector as follows:
Well logging is with carrying liquid plunger type rubbery human body current collector, including leather bag current collector short circuit, the plunger actuation liquid storage cylinder short circuit being connected with leather bag current collector short circuit, the motor being connected with plunger actuation liquid storage cylinder short circuit drives short circuit and the unified oil pipe encapsulating each short circuit, connect on described leather bag current collector short circuit and have centralizer, described leather bag current collector short circuit includes bypass of fluid pipe nipple and rubbery human body, rubbery human body is connected on oil pipe lateral wall, bypass of fluid pipe nipple is connected to inside oil pipe, liquid storage passage it is provided with inside bypass of fluid pipe nipple, rubbery human body is connected by liquid storage passage with the liquid storage cylinder in plunger actuation liquid storage cylinder short circuit；Described plunger actuation liquid storage cylinder short circuit include the liquid storage cylinder of one end open and seal liquid storage cylinder opening push away liquid piston, push away and drive the threads of lead screw in short circuit to be connected with motor in the middle part of liquid piston；Described motor drives short circuit to include motor and the leading screw being connected on motor output shaft.
Being connected between described bypass of fluid pipe nipple and liquid storage cylinder and have oil-filled pipe nipple, topping up pipe nipple is connected with oil-collecting pipe nipple.
Described bypass of fluid pipe nipple is provided with fluid passage, and inlet is connected by fluid passage with the logger short circuit flowing to current collector previous stage.
Described pushing away has two cannelures on liquid piston side wall, be respectively equipped with sealing ring and back-up ring in two cannelures；At the open outer end of described liquid storage cylinder, inwall was provided with line short circuit.
Described push away to be connected between liquid piston and leading screw have push rod, push rod one end with push away that liquid piston is fixing to be connected, the other end is threadeded with ball-screw；Described ball-screw is connected by leading screw urceolus, double-direction thrust ball bearing, clamp nut, flat key and axle sleeve and described motor output shaft are fixing..
Connecting on described push rod has guide pad, the two ends of guide pad moving direction to be fixed with switchboard, and switchboard connects limit switches.
The energization input of described motor connects wiring short circuit；Three core sliding sleeves are set in described wiring short circuit.
Beneficial effects of the present invention: when needs open rubbery human body, for motor for positive electricity, driven by motor ball-screw drives push rod to promote forward liquid piston, push away liquid piston to be pushed in the space between rubbery human body and afflux short circuit by liquid storage pipeline by the liquid within liquid storage cylinder, owing to liquid is the most compressible, rubbery human body is injected into liquid and struts, thus has sealed the annular space outside oil pipe, it is achieved that collection flow operation；When rubbery human body regained by needs, for the anti-phase power supply of motor, making push rod retreat, drawn back to liquid storage cylinder by the liquid in rubbery human body, rubbery human body restPoses, thus realizes regaining rubbery human body operation；Wherein, the displacement of two limit switches, is the maximum displacement of driven by motor ball-screw, and then controls the amount of liquid entrance rubbery human body, prevents rubbery human body from rising brokenly or not enough；On the one hand centralizer protects rubbery human body to greatest extent, prevents rubbery human body from scratching, on the other hand when device is gone into the well, and can be with righting oil pipe；The present invention has two gas-tight silos, and one is liquid storage cylinder, prevents inside and outside liquid from flowing in or out, and another is the gas-tight silo disposing motor, prevents motor entering water from being burnt；Effect is notable, operation and easy to use and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of leather bag current collector short circuit in Fig. 1；
Fig. 3 is the structural representation of plunger actuation liquid storage cylinder short circuit in Fig. 1；
Fig. 4 is the structural representation that in Fig. 1, motor drives short circuit；
Fig. 5 is the schematic cross-section of bypass of fluid pipe nipple.
In figure: 1-leather bag current collector short circuit, 2-plunger actuation liquid storage cylinder short circuit, 3-motor drives short circuit, 4-oil pipe, 5-centralizer, 6-bypass of fluid pipe nipple, 7-rubbery human body, 8-liquid storage passage, 9-liquid storage cylinder, 10-pushes away liquid piston, 11-leading screw, 12-motor, 13-topping up pipe nipple, 14-oil-collecting pipe nipple, 15-fluid passage, 16-sealing ring, 17-back-up ring, 18-crosses line short circuit, 19-push rod, 20-leading screw urceolus, 21-double-direction thrust ball bearing, 22-clamp nut, 23-flat key, 24-axle sleeve, 25-guide pad, 26-switchboard, 27-limit switch, 28-wiring short circuit, 29-tri-core sliding sleeve.
Detailed description of the invention
In order to make it easy to understand ,-5 couples of present invention of FIG. 1 below are further illustrated:
Embodiment 1: well logging is with carrying liquid plunger type rubbery human body current collector, this device is broadly divided into three parts and package casing, including leather bag current collector short circuit 1, the plunger actuation liquid storage cylinder short circuit 2 being connected with leather bag current collector short circuit 1, the motor being connected with plunger actuation liquid storage cylinder short circuit 2 drives short circuit 3 and the unified oil pipe 4 encapsulating each short circuit, connect on described leather bag current collector short circuit 1 and have centralizer 5, what certainly centralizer 5 was connected to leather bag current collector short circuit 1 goes out well end, centralizer 5, protection rubbery human body 7 the most to greatest extent, prevent rubbery human body 7 from scratching, on the other hand when device is gone into the well, righting oil pipe 4；Described leather bag current collector short circuit 1 includes bypass of fluid pipe nipple 6 and rubbery human body 7, rubbery human body 7 is connected on oil pipe 4 lateral wall, bypass of fluid pipe nipple 6 is connected to inside oil pipe 4, bypass of fluid pipe nipple 6 is used for transmitting liquid, rubbery human body 7 is used for rushing liquid distending or tapping is reclaimed, thus realizes opening and shutting pipeline；Bypass of fluid pipe nipple 6 is internal is provided with liquid storage passage 8, and rubbery human body 7 is connected by liquid storage passage 8 with the liquid storage cylinder 9 in plunger actuation liquid storage cylinder short circuit 2, and liquid storage cylinder 9 is used for storing liquid and standby pressure；Described plunger actuation liquid storage cylinder short circuit 2 include the liquid storage cylinder 9 of one end open and seal liquid storage cylinder 9 opening push away liquid piston 10, push away liquid piston 10 for the liquid advanced and pull back in liquid storage cylinder 9, thus realize being pushed into liquid the operation in rubbery human body 7；Pushing away drives the leading screw 11 in short circuit 3 to threaded with motor in the middle part of liquid piston 10, and leading screw 11 drive pushes away liquid piston 10 and moves；Described motor drives short circuit 3 include motor 12 and be connected to the leading screw 11 on motor 12 output shaft, and this makes motor that leading screw 11 can be driven to move.
Embodiment 2: further, in order to improve the practicality of this device, it is to avoid moment rushes liquid in a large number and causes rising brokenly, being connected and have oil-filled pipe nipple 13 between described bypass of fluid pipe nipple 6 and liquid storage cylinder 9, topping up pipe nipple 13 is connected with oil-collecting pipe nipple 14.
Embodiment 3: further, it is made that further instruction for embodiment convection cell bypass short joint 6, the most described bypass of fluid pipe nipple 6 is provided with fluid passage 15, inlet is connected by fluid passage 15 with the logger short circuit flowing to current collector previous stage, thus the height improving this device is joined and property and the suitability.
Embodiment 4: further, in order to improve accuracy, avoid the leaked liquid during extruding of the liquid in liquid storage cylinder 9, described in push away and on liquid piston 10 sidewall, have two cannelures, two cannelures are respectively equipped with sealing ring 16 and back-up ring 17；At the open outer end of described liquid storage cylinder 9, inwall was provided with line short circuit 18, and wherein sealing ring 16 is used for sealing, and back-up ring 17 can be with push and block gap liquid while sealing.
Embodiment 5: further, the structure annexation pushed away between liquid piston 10, leading screw 11 and motor 12 has been made further instruction by the present embodiment, push away described in i.e. to be connected between liquid piston 10 with leading screw 11 and have push rod 19, push rod 19 one end with push away that liquid piston 10 is fixing to be connected, the other end is threadeded with leading screw 11；Described leading screw 11 is connected by leading screw urceolus 20, double-direction thrust ball bearing 21, clamp nut 22, flat key 23 and axle sleeve 24 and described motor 12 output shaft are fixing, push away liquid piston 10 not to be directly connected to leading screw 11 and can effectively improve the capacity of liquid storage cylinder 9, reduce that its volume and avoiding pushes away that liquid piston 10 is directly threadeded with leading screw 11 and after life-time service, mechanical wear powder flows into rubbery human body 7 after falling into liquid and causes the risk of its cracky.
Embodiment 6: further, in order to improve service life and the automatic control of this device, connect on described push rod 19 and have guide pad 25, the two ends of guide pad 25 moving direction are fixed with switchboard 26, connect limit switches 27, the displacement of two limit switches 27 on switchboard 26, be motor 12 maximum displacement that drives leading screw 11, and then control liquid enter rubbery human body 7 amount, prevent rubbery human body 3 rush liquid rise broken or rush liquid deficiency.
Embodiment 7: further, for the ease of the wiring installation of this device, the energization input of described motor 12 connects wiring short circuit 28；Three core sliding sleeves 29 are set in described wiring short circuit 28.
Embodiment 8: further, leading screw 11 has been made further instruction by the present embodiment, the most described leading screw 11 is ball-screw, and compared with common leading screw, the transmission efficiency of ball-screw is about 90 ~ 96%, the transmission efficiency of common leading screw is about 26 ~ 46%, if i.e. driving the biggest load, use ball-screw can use less driving power, the most low power motor, both cost can have been reduced, the most capable of reducing energy consumption；And ball-screw is rolling friction, common leading screw is sliding friction, during work, the former temperature rise is far below the latter, therefore high-speed drive task can be undertaken, and the surface damage of rolling friction is more much smaller than sliding friction, therefore, when the conditions such as cleaning, lubrication meet, the maintenance life-span of ball-screw is more much higher than trapezoidal screw；It addition, ball-screw is almost without self-locking performance, and common leading screw has certain self-locking performance, and this allows for ball-screw and coordinates the effect of limit switch, can realize sealing and the recovery operation of rubbery human body 7 more accurately.
Beneficial effect: effect is notable, operation and easy to use and practical；Can effectively improve reliability and the collection mobility of current collector, it is adaptable to low production fluid, low flow velocity horizontal well.
Claims (8)
- null1. well logging is with carrying liquid plunger type rubbery human body current collector，Including leather bag current collector short circuit (1)、Plunger actuation liquid storage cylinder short circuit (2) being connected with leather bag current collector short circuit (1)、The motor being connected with plunger actuation liquid storage cylinder short circuit (2) drives short circuit (3) and the unified oil pipe (4) encapsulating each short circuit，It is characterized in that: the upper connection of described leather bag current collector short circuit (1) has centralizer (5)，Described leather bag current collector short circuit (1) includes bypass of fluid pipe nipple (6) and rubbery human body (7)，Rubbery human body (7) is connected on oil pipe (4) lateral wall，Bypass of fluid pipe nipple (6) is connected to oil pipe (4) inner side，Bypass of fluid pipe nipple (6) is internal is provided with liquid storage passage (8)，Rubbery human body (7) is connected by liquid storage passage (8) with the liquid storage cylinder (9) in plunger actuation liquid storage cylinder short circuit (2)；Described plunger actuation liquid storage cylinder short circuit (2) include the liquid storage cylinder (9) of one end open and seal liquid storage cylinder (9) opening push away liquid piston (10), push away liquid piston (10) middle part and threaded with the leading screw (11) in motor driving short circuit (3)；Described motor drives short circuit (3) to include motor (12) and the leading screw (11) being connected on motor (12) output shaft.
- 2. log well with carrying liquid plunger type rubbery human body current collector as claimed in claim 1, it is characterized in that: being connected between described bypass of fluid pipe nipple (6) and liquid storage cylinder (9) has oil-filled pipe nipple (13), and topping up pipe nipple (13) is connected with oil-collecting pipe nipple (14).
- 3. log well with carrying liquid plunger type rubbery human body current collector as claimed in claim 1, it is characterized in that: described bypass of fluid pipe nipple (6) is provided with fluid passage (15), inlet is connected by fluid passage (15) with the logger short circuit flowing to current collector previous stage.
- 4. log well with carrying liquid plunger type rubbery human body current collector as claimed in claim 1, it is characterised in that push away described in: and on liquid piston (10) sidewall, have two cannelures, two cannelures are respectively equipped with sealing ring (16) and back-up ring (17)；At the open outer end of described liquid storage cylinder (9), inwall was provided with line short circuit (18).
- 5. log well with carrying liquid plunger type rubbery human body current collector as claimed in claim 1, it is characterized in that: described in push away to be connected between liquid piston (10) with leading screw (11) and have push rod (19), push rod (19) one end with push away that liquid piston (10) is fixing to be connected, the other end is threadeded with leading screw (11)；Described leading screw (11) is connected by leading screw urceolus (20), double-direction thrust ball bearing (21), clamp nut (22), flat key (23) and axle sleeve (24) and described motor (12) output shaft are fixing.
- 6. log well with carrying liquid plunger type rubbery human body current collector as claimed in claim 5, it is characterized in that: the upper connection of described push rod (19) has guide pad (25), the two ends of guide pad (25) moving direction are fixed with switchboard (26), and switchboard (26) connects limit switches (27).
- 7. log well with carrying liquid plunger type rubbery human body current collector as claimed in claim 1, it is characterised in that: the energization input of described motor (12) connects wiring short circuit (28)；Three core sliding sleeves (29) are set in described wiring short circuit (28).
- 8. the well logging as described in claim 1 or 5 is with carrying liquid plunger type rubbery human body current collector, it is characterised in that: described leading screw (11) is ball-screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218785.9A CN105840177B (en) | 2016-04-11 | 2016-04-11 | Self-contained liquid plunger driven rubber bag collector for well logging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218785.9A CN105840177B (en) | 2016-04-11 | 2016-04-11 | Self-contained liquid plunger driven rubber bag collector for well logging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105840177A true CN105840177A (en) | 2016-08-10 |
| CN105840177B CN105840177B (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218785.9A Active CN105840177B (en) | 2016-04-11 | 2016-04-11 | Self-contained liquid plunger driven rubber bag collector for well logging |
Country Status (1)
| Country | Link |
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| CN (1) | CN105840177B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386249A (en) * | 2018-12-12 | 2019-02-26 | 四川省科学城久利电子有限责任公司 | A kind of full collector for oil pipeline |
| CN114970274A (en) * | 2022-06-01 | 2022-08-30 | 燕山大学 | Finite element/machine learning rubber ball collector structure optimization system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278768Y (en) * | 1996-04-09 | 1998-04-15 | 大庆石油管理局生产测井研究所 | Auto-controllable rubber ball collector |
| CN2364215Y (en) * | 1999-04-20 | 2000-02-16 | 北京市斯佩思技术应用研究所 | Annular water-finding instrument flow concentrating device |
| CN1858399B (en) * | 2006-05-27 | 2010-05-12 | 东营市创世石油测试新技术开发有限责任公司 | Electric hydraulic packer for oil pipe |
| US20140027105A1 (en) * | 2012-07-30 | 2014-01-30 | Cyrus Aspi Irani | Apparatus and method for representative fluid sampling |
| CN203430470U (en) * | 2013-08-20 | 2014-02-12 | 长春市斯普瑞新技术有限责任公司 | Electric sealing section |
-
2016
- 2016-04-11 CN CN201610218785.9A patent/CN105840177B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278768Y (en) * | 1996-04-09 | 1998-04-15 | 大庆石油管理局生产测井研究所 | Auto-controllable rubber ball collector |
| CN2364215Y (en) * | 1999-04-20 | 2000-02-16 | 北京市斯佩思技术应用研究所 | Annular water-finding instrument flow concentrating device |
| CN1858399B (en) * | 2006-05-27 | 2010-05-12 | 东营市创世石油测试新技术开发有限责任公司 | Electric hydraulic packer for oil pipe |
| US20140027105A1 (en) * | 2012-07-30 | 2014-01-30 | Cyrus Aspi Irani | Apparatus and method for representative fluid sampling |
| CN203430470U (en) * | 2013-08-20 | 2014-02-12 | 长春市斯普瑞新技术有限责任公司 | Electric sealing section |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386249A (en) * | 2018-12-12 | 2019-02-26 | 四川省科学城久利电子有限责任公司 | A kind of full collector for oil pipeline |
| CN114970274A (en) * | 2022-06-01 | 2022-08-30 | 燕山大学 | Finite element/machine learning rubber ball collector structure optimization system and method |
| CN114970274B (en) * | 2022-06-01 | 2024-04-09 | 燕山大学 | Finite element/machine learning rubber ball current collector structure optimization system and method |
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| Publication number | Publication date |
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| CN105840177B (en) | 2019-05-21 |
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