CN104022616B - Tube type linear electric motors power-driven impactor at the bottom of a kind of hole - Google Patents
Tube type linear electric motors power-driven impactor at the bottom of a kind of hole Download PDFInfo
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- CN104022616B CN104022616B CN201410282793.0A CN201410282793A CN104022616B CN 104022616 B CN104022616 B CN 104022616B CN 201410282793 A CN201410282793 A CN 201410282793A CN 104022616 B CN104022616 B CN 104022616B
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Abstract
The present invention relates to tube type linear electric motors power-driven impactor at the bottom of a kind of hole, including motor urceolus, permanent magnetism bar, linear ball bearing, mover, mover stalloy, mover coil。Motor urceolus is the shell of linear electric motors, and permanent magnetism bar is fixed on motor urceolus, and permanent magnetism bar is as the stator of linear electric motors；Mover is done relative motion by linear ball bearing and permanent magnetism bar；It is inlaid with the iron core being made up of mover stalloy inside mover, iron core has groove, in groove, have mover coil；Coil adopts three-phase alternating current winding, is used for accessing three-phase symmetrical alternating current, produces the travelling-magnetic-field consistent with the mover direction of motion；It is additionally provided with two damping springs for bumper and absorbing shock。This impacter adopts moving-coil structure, and namely permanent magnetism bar and iron core are fixed, coil movement。Between mover and base, devise buffering spacer simultaneously improve the anti-fatigue life of impacter。This impacter simple in construction is firm, manufactures maintenance cost low, and impact stroke speed, frequency can easily be accommodated, and efficiency is high, can be used for deep drilling。
Description
Technical field
The present invention relates to a kind of design of electrical motor technology, concretely relate to tube type linear electric motors power-driven impactor at the bottom of a kind of hole, the impacter of the present invention can be widely applied in geology equipment, geology, oil drilling engineering, drilling engineering, alternative existing hydraulic impacter and pneumatic dth hammer。
Background technology
Current have two big classes at geology, the conventional impacter of oil drilling engineering: hydraulic impacter and pneumatic dth hammer, and this two classes impacter in use all has following problems:
1) running parameter cannot down-hole adjust, remote control difficulty, it is impossible to adapt to drilling equipment THE TRENDS OF DEVELOPMENT IN AUTOMATION。Traditional surge or pneumatic dth hammer impact stroke frequency regulates difficulty, start to impact only in pre-adjusted ballistic work and frequency of impact after generally going into the well, it is impossible to according to different stratum, impact parameter made suitable adjustment。Earth's surface slush pump or air compressor operate at the beginning, impacter and in running order, and after starting working in down-hole, table controls impenetrably；Run into emergency when need to quit work, it is necessary to close slush pump or air compressor, it is possible to cause the accidents such as the burning of bits。For be likely to occur as sky beat, water route blocks, impacter card is waited indefinitely situation, it is impossible to make accurate analysis, identification, can only by staff on earth's surface subjective judgment by rule of thumb。It is not well positioned to meet drilling equipment now and automaticity has been required higher needs。
2) needing high-power affiliated facility, efficiency is low, and energy consumption is big。Surge or air hammer needs to be equipped with special equipment, such as relatively high power slush pump or air compressor。Sometimes excessive mud flow rate can bring the counter productives such as hole wall unstability；The sand content etc. of drilling fluid is also had strict demand by hydraulic impacter。Due to many-sided reason such as liquids and gases seepage, surging and pneumatic transmission efficiency is more much lower than machine driving, this is one the fact that be difficult to change。
3) some special circumstances drilling condition cannot be met。By the impact of the factors such as drilling fluid gravity, surge or pneumatic dth hammer application in horizontal drilling, directional drilling has certain restriction。Simultaneously because the dependence to drilling fluid, it may not apply to creep into occasion without the special type of the circulatory mediators such as drilling fluid。
4) hydraulic impacter creeps in deep and there is also a lot of technical problem。Pneumatic dth hammer is not suitable for deep well drilling, and hydraulic impacter can creep into 3000 meters with deep boring。But when carrying out deep hole, superdeep holes operation, producing the relatively larger pressure loss (leakage) when carrying the fluid media (medium) of energy needed for hydraulic impacter by longer drill string, this phenomenon is especially apparent in superdeep holes drilling process。Hydraulic impacter service behaviour also can be impacted by the back pressure of body of backflowing in this external upright opening drilling process, may result in impacter and do not work time serious。Additionally, there may be such as inner casing and survey the problems such as passage is revealed, fluidic working life is short, because fluidic average life is 60-100h, have a strong impact on drilling efficiency。
Relative to tradition hydraulic impacter and pneumatic dth hammer, exploitation linear electric motors power-driven impactor has lot of advantages for geology, the oil drilling engineering existing hydraulic impacter of replacement and pneumatic dth hammer, can solve above existing problems, adapt to probing intellectuality at present and automatization, deep development trend。
Summary of the invention
Present invention aims to existing Problems existing, and it is firm to propose a kind of simple in construction, manufactures maintenance cost low, impact stroke speed, frequency can easily be accommodated, and efficiency is high, can be used for tube type linear electric motors power-driven impactor at the bottom of the hole of deep drilling。
To achieve these goals, the technical solution used in the present invention is: provide tube type linear electric motors power-driven impactor at the bottom of a kind of hole, including motor urceolus, permanent magnetism bar, linear ball bearing, mover outer ring, mover stalloy, mover coil, damping spring, buffering spacer and base, the described shell that motor urceolus is whole power-driven impactor, motor urceolus is for the connection with drilling tool；Described permanent magnetism bar is fixed on motor urceolus, and permanent magnetism bar is as linear motor stator electric；The permanent magnet outer layer covers of described permanent magnetism bar has a stainless steel layer, permanent magnet center to have one for the channel of chip removal of chip removal；Described channel of chip removal runs through whole power-driven impactor；The described mover that mover outer ring is linear electric motors, mover outer ring does sliding relative movement by linear ball bearing with the permanent magnetism bar as stator, and namely permanent magnetism bar and iron core as stator are fixed, and mover coil moves；Mover outer ring is as the supporting body of motor moving-coil simultaneously, is inlaid with the iron core being made up of mover stalloy inside mover outer ring, and iron core is provided with groove, is fixed with mover coil in groove；Described mover coil adopts three-phase alternating current winding, is used for accessing three-phase symmetrical alternating current, produces the travelling-magnetic-field consistent with the mover direction of motion；Described damping spring has two, i.e. damping spring A and damping spring B, it is separately mounted to permanent magnetism bar two ends, wherein damping spring A passes through step and upper end, the mover outer ring axial limiting of motor urceolus, one end of damping spring B is spacing by the thrust step on mover outer ring, and two damping springs are for shock absorbing effect that mover has been moved；Described base is fixed on mover outer ring by buffering spacer by screw, and described buffering spacer adopts the sandwich structure of folder aluminium flake in the middle of two-layer politef。
The permanent magnet outer layer covers of described permanent magnetism bar has a stainless steel layer, permanent magnet center to have one for the channel of chip removal of chip removal。
Described linear electric motors adopt moving-coil structure, and namely permanent magnetism bar and iron core as stator are fixed, and mover coil moves。Tube type linear electric motors power-driven impactor at the bottom of such hole operationally can prevent permanent magnetism bar and iron core loss of excitation in shock。
Described mover coil adopts monolayer pie winding, and copper factor is 72.7%。
Described buffering spacer adopts the sandwich structure of folder aluminium flake in the middle of two-layer politef。The present invention devises the sandwich structure of folder aluminium flake in the middle of two-layer politef between mover outer ring and base, tube type linear electric motors power-driven impactor at the bottom of hole can be solved preferably in the process crept into, power-driven impactor mover directly acts on impact anvil, reaches the effect of fractured rock to drill bit by transmitting impact stress。In the process impacted, impacter can be subject to complex stress effect。Buffering spacer ensure that the long-time normal operation of impacter, and reduces impacter subpart stress as far as possible, improves the anti-fatigue life of tube type linear electric motors power-driven impactor at the bottom of hole。Can significantly decay its stress wave on barycenter accelerating curve, reduce the spike of making a concerted effort of the two, and reduce the destruction of impact of reciprocating vibration, be greatly improved impacter key position fatigue life。
Tube type linear electric motors power-driven impactor at the bottom of a kind of hole of the present invention provides the benefit that:
1, the impacter of the present invention adopts similar magnetic artillery cartridge ejection principle, does work by electromagnetic force (or Lorentz force), electromagnetic energy is become kinetic energy, completes the acceleration to block stamp。
2, the coil of the impacter of the present invention adopts Electromagnetic Launching formula structure so that it is having electromagnetic force big, the feature that emission rate is fast, cylindrical linear is suitable for drill pipe bore space, and mover and stator length are not limited by a space, and impacter power can flexible design。
3, the coil of the impacter of the present invention adopts three-phase alternating current winding, passes into three-phase symmetrical alternating current, produces the travelling-magnetic-field consistent with the mover direction of motion。Owing to magnetic gap is generally constant in 0.5～1mm, the electromagnetic force of generation is constant and is maintained peak value always。Can very convenient control mover movement velocity by changing energising frequency and the forward and reverse frequency of switching。
4, the present invention devises the sandwich structure of folder aluminium flake in the middle of two-layer politef between mover outer ring and base, can significantly decay its stress wave on barycenter accelerating curve, reduce the spike of making a concerted effort of mover outer ring and both bases, and reduce the destruction of impact of reciprocating vibration, it is greatly improved impacter key position fatigue life。
5, the power-driven impactor impact velocity of the present invention, frequency, stroke are easy to regulate, directly utilize electric energy mechanical efficiency height, simple in construction is firm, physical dimension flexible design, manufactures maintenance cost low, can be used for interior use of holing, can effectively solve the shortcoming that common electric beater mechanism strength is little。The fields such as ground ore deposit, metallurgy, oil that can be widely used in realize geological prospecting and the resource exploitation of underground, are with a wide range of applications and practical value。
Accompanying drawing explanation
Fig. 1 is the surface structure schematic diagram of tube type linear electric motors power-driven impactor at the bottom of hole of the present invention。
Fig. 2 is the front-end architecture enlarged diagram of power-driven impactor of the present invention。
Fig. 3 is power-driven impactor rear end of the present invention partial structurtes enlarged diagram。
Fig. 4 is the principle schematic of the power-driven impactor employing moving-coil structure of the present invention。
The groove of Fig. 5 power-driven impactor of the present invention and toothing enlarged diagram。In figure, the dotted line of bottommost is the centrage of stator。
In above-mentioned figure: 1 motor urceolus；2 damping spring A；3 permanent magnetism bars；4 linear ball bearings；5 mover outer rings；6 mover stalloys；7 mover coils；8 damping spring B；9 thrust steps；10 buffering spacers；11 screws；12 bases；13 channel of chip removal；21 grooves；22 teeth；23 tooth feet；24 notches。
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail。
Embodiment 1: tube type linear electric motors power-driven impactor at the bottom of a kind of hole provided by the invention, its structure such as Fig. 1, 2, shown in 3, including motor urceolus 1, permanent magnetism bar 3, linear ball bearing 4, mover outer ring 5, mover stalloy 6, mover coil 7, damping spring, buffering spacer 10 and base 12, the described shell that motor urceolus 1 is whole power-driven impactor, motor urceolus 1 is for the connection with drilling tool, the permanent magnetism bar 3 of described linear electric motors is fixed on motor urceolus 1, permanent magnetism bar 3 is as the stator of linear electric motors, permanent magnetism bar 3 is a permanent magnet, it is enclosed with stainless steel layer in permanent magnet outer ring, permanent magnetism bar 3 center has one for the channel of chip removal 13 of chip removal, described channel of chip removal 13 runs through whole power-driven impactor；Described mover outer ring 5 is the mover of linear electric motors, and mover outer ring 5 does sliding relative movement by linear ball bearing 4 with the permanent magnetism bar 3 as stator；Mover outer ring 5 is as the supporting body of motor moving-coil simultaneously, and mover outer ring 5 is internal is inlaid with the iron core being made up of mover stalloy 6, and iron core is provided with groove 21, is fixed with mover coil 7 in groove 21；Described mover coil 7 adopts three-phase alternating current winding, is used for accessing three-phase symmetrical alternating current, produces the travelling-magnetic-field consistent with the mover direction of motion；Described damping spring has two to be separately mounted to permanent magnetism bar 3 two ends, wherein damping spring A2 passes through step and upper end, mover outer ring 5 axial limiting of motor urceolus 1, one end of damping spring B8 is spacing by the thrust step 9 on mover outer ring 5, and two damping springs are all for shock absorbing effect that mover has been moved；Described base 12 is fixed on mover outer ring 5 by screw 11 by buffering spacer 10。
Referring to Fig. 3, described buffering spacer 10 adopts the sandwich structure of folder aluminium flake in the middle of two-layer politef。According to stress wave reflection mechanism, adopt the design of machinery filtering, namely adopt the mode of three layers gasket construction to improve parts impact resistance。When Shock stress Wave is when by the separating surface of structural member and buffering spacer 10, part is reflected and is decayed, and it is not elastic buffer that buffering spacer 10 improves the main cause of protected part impact resistance, but machinery filtering。The present embodiment is by after the typical sandwich buffer structure of one 5mm politef+5mm aluminium flake+5mm politef of increase bottom impacter, Ansys emulation is adopted after obtaining employing buffering spacer 10, to impact general ability portion stress distribution cloud atlas and local diagram of strains, may indicate that impacter maximum stress is reduced to 523.78MPa by original 642.37MPa from cloud charts, and maximum stress place is not the key component of the mover coil at motor and mover stalloy。Maximum stress and strain appear in the parts of buffering spacer 10, mover coil 7 that linear electric motors impact and mover stalloy 6 part mean stress decline 231MPa, protect the armature key component of linear electric motors impacter so to greatest extent。After adopting buffering spacer 10, the key component life-span is by original 40.34 × 104H becomes 333.56 × 104H, improvement effect highly significant。
Referring to Fig. 4, linear electric motors of the present invention adopt moving-coil structure, and namely permanent magnetism bar 3 and iron core as stator are fixed, and move in mover outer ring 5。Tube type linear electric motors power-driven impactor at the bottom of such hole operationally can prevent permanent magnetism bar and iron core loss of excitation in shock。
Embodiment 2: tube type linear electric motors power-driven impactor at the bottom of a kind of hole provided by the invention, its structure is basic and embodiment 1 is identical。The cylindrical linear that the present invention adopts is suitable for drill pipe bore space, and mover and stator length are not limited by a space, and impacter power can flexible design so that it is have the feature of big electromagnetic force。
The tube type linear electric motors power-driven impactor key dimension of the present invention and electromagnetic parameter are shown in following table: in table, partial symbols is referring to Fig. 5。
From upper table: this impacter calculates according to impact stroke 30mm, mover quality 10kg, and with external diameter 62mm cylinder magneto for impacter, single-stroke time t ≈ 0.1s, α ≈ 3～9g, v ≈ 3～9m/s, one way ballistic work is about 45～135J。The performance indications of this impacter are suitable with 73mm external diameter hydraulic impacter performance parameter index。
The impacter work process of the present invention: be arranged in drilling tool by the impacter of the present invention, passes into three-phase symmetrical alternating current during work, produce the travelling-magnetic-field consistent with the mover direction of motion。Mover and base 12 initial position being connected to, move upward under electromagnetic force by anvil in bottom, and mover accelerates to reach exactly to when rising to limit superior the compression limit of damping spring A2, then start to accelerate directly to clash into anvil to gliding。Damping spring A2 plays the effect of buffer protection in upward stroke, in order to avoid mover direct collision upwards is to motor urceolus 1；Mover and the base 12 direct impact anvil being connected to during downward stroke, in order to prevent mover impact endurance test shock from rebounding on stator, the damping spring B8 of design plays the effect of protection magnetic steel of stator, and damping spring B8 avoids magnet steel can loss of excitation in impact。Owing to magnetic gap is generally constant in 0.5～1mm, the electromagnetic force of generation is constant and is maintained peak value always。Secondary mover movement velocity very convenient can be controlled by changing energising frequency and the forward and reverse frequency of switching。The impacter maximum thrust 670N of the present invention, power, up to 1280W, adapts to probing intellectuality at present and automatization, deep development trend。It is primarily applicable for wire line coring during deep well drilling to creep into, adopts power battery pack power supply mode, propose to change by set of cells together when extracting basket。
The impacter simple in construction of the present invention is firm, impact electromagnetic force is big, manufactures maintenance cost low, and impact stroke speed, frequency can easily be accommodated, and efficiency is high, extensive use geology equipment, geology, oil drilling engineering, drilling engineering can substitute existing hydraulic impacter, pneumatic dth hammer。
Claims (2)
1. tube type linear electric motors power-driven impactor at the bottom of a hole, including motor urceolus, permanent magnetism bar, linear ball bearing, mover outer ring, mover stalloy, mover coil, damping spring, buffering spacer and base, it is characterized in that: the described shell that motor urceolus is whole power-driven impactor, motor urceolus is for the connection with drilling tool；Described permanent magnetism bar is fixed on motor urceolus, and permanent magnetism bar is as the stator of linear electric motors；The permanent magnet outer layer covers of described permanent magnetism bar has a stainless steel layer, permanent magnet center to have one for the channel of chip removal of chip removal；Described channel of chip removal runs through whole power-driven impactor；The described mover that mover outer ring is linear electric motors, mover outer ring does sliding relative movement by linear ball bearing with the permanent magnetism bar as stator, and namely permanent magnetism bar and iron core as stator are fixed, and mover coil moves；Mover outer ring is as the supporting body of motor moving-coil simultaneously, is inlaid with the iron core being made up of mover stalloy inside mover outer ring, and iron core is provided with groove, is fixed with mover coil in groove；Described mover coil adopts three-phase alternating current winding, is used for accessing three-phase symmetrical alternating current, produces the travelling-magnetic-field consistent with the mover direction of motion；Described damping spring has two, i.e. damping spring A and damping spring B, it is separately mounted to permanent magnetism bar two ends, wherein damping spring A passes through step and upper end, the mover outer ring axial limiting of motor urceolus, one end of damping spring B is spacing by the thrust step on mover outer ring, and two damping springs are for shock absorbing effect that mover has been moved；Described base is fixed on mover outer ring by buffering spacer by screw, and described buffering spacer adopts the sandwich structure of folder aluminium flake in the middle of two-layer politef。
2. tube type linear electric motors power-driven impactor at the bottom of hole according to claim 1, it is characterised in that: described mover coil adopts monolayer pie winding, and copper factor is 72.7%。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410282793.0A CN104022616B (en) | 2014-06-23 | 2014-06-23 | Tube type linear electric motors power-driven impactor at the bottom of a kind of hole |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410282793.0A CN104022616B (en) | 2014-06-23 | 2014-06-23 | Tube type linear electric motors power-driven impactor at the bottom of a kind of hole |
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| CN104022616A CN104022616A (en) | 2014-09-03 |
| CN104022616B true CN104022616B (en) | 2016-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3787163A3 (en) * | 2019-08-26 | 2021-04-21 | Nti Ag | Drive device with a tubular linear motor |
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| CN105863502B (en) * | 2016-04-12 | 2018-04-17 | 江苏苏盐阀门机械有限公司 | A kind of impact type oil exploration system with remote control function |
| CN108825122B (en) * | 2018-06-20 | 2019-12-27 | 郑州大学 | High-frequency impact linear permanent magnet motor system |
| CN109854164B (en) * | 2018-12-14 | 2024-05-17 | 中国科学院沈阳自动化研究所 | Drilling device and drilling method thereof |
| CN111474473B (en) * | 2019-01-23 | 2022-07-15 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Locked rotor test device for ultra-high-speed superconducting linear motor |
| CN109883858A (en) * | 2019-03-08 | 2019-06-14 | 颜士伟 | A kind of Hopkinson pressure bar test device of magnetic drive |
| CN110224515A (en) * | 2019-06-13 | 2019-09-10 | 张保龙 | Motor |
| CN110924916A (en) * | 2019-12-12 | 2020-03-27 | 龚大建 | Device for improving permeability of compact shale oil and gas reservoir |
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| CN101071095A (en) * | 2007-06-11 | 2007-11-14 | 重庆大学 | Linear motor accelerated impact spring fatigue test device |
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| JP3461622B2 (en) * | 1995-06-27 | 2003-10-27 | 古河機械金属株式会社 | Electromagnetic impact device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071095A (en) * | 2007-06-11 | 2007-11-14 | 重庆大学 | Linear motor accelerated impact spring fatigue test device |
Non-Patent Citations (1)
| Title |
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| 新型电动冲击钻具及其性能试验研究;刘力等;《矿山机械》;20100315;第38卷(第5期);全文 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3787163A3 (en) * | 2019-08-26 | 2021-04-21 | Nti Ag | Drive device with a tubular linear motor |
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