CN103122852B - Reversal control device of screw pump - Google Patents
Reversal control device of screw pump Download PDFInfo
- Publication number
- CN103122852B CN103122852B CN201310025938.4A CN201310025938A CN103122852B CN 103122852 B CN103122852 B CN 103122852B CN 201310025938 A CN201310025938 A CN 201310025938A CN 103122852 B CN103122852 B CN 103122852B
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- ratchet
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- brake
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- 230000003139 buffering effect Effects 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
What the present invention relates to is reversal control device of screw pump, this reversal control device of screw pump comprises ratchet, pawl disk, friction buffer braking mechanism, friction buffer braking mechanism is made up of outer ratchet, friction plate, friction disk, outer ratchet and pawl disk are fixedly installed togather, the outside correspondence of outer ratchet is provided with friction disk, friction disk and friction plate drive fit, friction plate again with ratchet drive fit.The present invention, when screw pump holddown is shut down and spirit is vowed in brake, efficiently solves the problem that ratchet card does not live, has and can effectively block and safe release function.
Description
One, technical field:
The present invention relates to be the shutdown that screw pump well driving device uses time inversion energy braking and release control gear, what be specifically related to is reversal control device of screw pump.
Two, background technique:
When screw bolt well runs well, drive sucker rod rotary by surface drive, then drive subsurface progressive cavity by sucker rod.Due to the elongate rod that sucker rod is hundreds of or more than 1000 meter, itself will inevitably storage elasticity energy during transmitting torque, when screw bolt well maintenance or accidental power failure etc. are shut down, sucker rod reverses rapidly and discharges its energy stored, its rotating speed can up to more than 1000r/min, now the rotating speed of reducer pulley will reach nearly 5000r/min, far exceed the design boundary that conventional mechanical design maximum speed is 3000r/min, the centrifugal force that belt pulley not only can occur exceedes its internal force and the accident that fragmentation flies out, and also can cause great destruction to whole equipment, also can cause casualties accident simultaneously, so driving unit on screw pump is provided with anti-reverse mechanism.
Conventional screw pump sump drive unit is all adopt ratchet, ratchet machinery anti-reverse mechanism substantially; pawl disk is arranged on the transmission shaft of surface drive; ratchet is also arranged on the shell of equipment transmission shaft; ratchet is arranged in pawl disk; first be block reversion when equipment downtime; and then by slowly loosening brake tile release, the energy making sucker rod store discharges gradually until dead halt.This mechanism does not go wrong when just starting to apply, but along with increasing of screw pump number of applications, the prolongation of Applicative time, because reversion controls the frequency of bad generation runaway accident in continuous increase, the order of severity is improving constantly, main presentation is that reducer pulley entirety flies out or fragmentation flies out, reducer pulley fragmentation together with motor pulley flies out, reducer input shaft all gets rid of and polished rod gets rid of curved or flies out after fractureing, sometimes also damaged by motor, more serious also there occurs surfaceman's casualty accident.
The malfunctioning accident of click anti-reverse mechanism occurred from scene, the main cause had an accident is as follows:
1, ratchet does not block ratchet: due to pawl axis blocked by foreign matter, by freezing live, the reason such as ratchet spring damage causes ratchet not block ratchet, causes drive unit high speed reverse rotation accident.
2, reversion release safety control: after ratchet blocks ratchet, owing to operating inconvenience, improperly not having again other control device during manual release, cause drive unit high speed reverse rotation accident.
Three, summary of the invention:
The object of this invention is to provide reversal control device of screw pump, it controls insecure problem for solving the reversion when shutting down of existing screw bolt well.
The technical solution adopted for the present invention to solve the technical problems is: this reversal control device of screw pump comprises ratchet, pawl disk, friction buffer braking mechanism, friction buffer braking mechanism is made up of outer ratchet, friction plate, friction disk, outer ratchet and pawl disk are fixedly installed togather, the outside correspondence of outer ratchet is provided with friction disk, friction disk and friction plate drive fit, friction plate again with ratchet close contact.
Also be provided with centrifugal-block outside ratchet in such scheme, centrifugal-block closes and is buckled in outside ratchet, and is stuck on ratchet, and in centrifugal-block surrounds by brake shell, centrifugal-block, brake shell form centrifugal automatic brake mechanism.
In such scheme, pawl disk arranged outside has manual ratchet, and with Ka Ya or groove on pawl disk, manual ratchet may be stuck on Ka Ya or groove, and the other end of manual ratchet connects manual ratchet adjustable lever.
Also be provided with manual brake outside ratchet in such scheme, manual brake is filled the span of a man's arms outside ratchet, and manual brake is provided with manual brake adjustable lever.
The such scheme middle friction tray inner ring position relative with ratchet is with buffering fixture block, also with buffering fixture block on ratchet, after rotating under the drive of friction disk inner ring ratchet outside, when after damped rotation several angle, when running to the buffering fixture block place on ratchet, buffering fixture block in friction disk inner ring snaps on the buffering fixture block of ratchet, thus pawl disk is stopped operating, and prevents outer ratchet from causing damage because of excessively strong impact.
Beneficial effect:
1, the present invention is when screw pump holddown is shut down and spirit is vowed in brake, and surface drive can reverse, but owing to there being centrifugal self-actuating brake, so also can not runaway accident be there is.
2, the present invention's problem of adopting three ratchets to efficiently solve ratchet card not live, concrete condition has: during the non-artificial shutdown such as holddown, if the malfunctioning outer ratchet of ratchet can realize blocking function more reliably than ratchet again; During artificial shutdown, if the malfunctioning manual ratchet of ratchet can realize blocking function more reliably than ratchet again, if ratchet and manual ratchet all malfunctioning time, outer ratchet can realize blocking function again.Manual ratchet just can check whether handy when surface drive runs, effectively ensure that artificial safety of shutting down.
3, the invention solves release control safety problem, concrete condition has; When manual release control improper cause speed reversal too fast time, along with rotating speed increases, centrifugal self-actuating brake moment of torsion on ratchet also can be increasing, and can rotating speed be controlled within the scope of safe speed of rotation, operator has ample time and readjusts manual brake in this process, guarantees that release rate within the limits prescribed.
Four, accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view in Fig. 1;
Fig. 3 is the B-B sectional view in Fig. 1;
Fig. 4 is the C-C sectional view in Fig. 1;
Fig. 5 is the D partial enlarged drawing in Fig. 1,
Fig. 6 is the partial sectional view in Fig. 5.
The manual ratchet of 1-; 2-ratchet; 3-pawl disk; The outer ratchet of 4-; 5-friction disk; 6-friction plate; 7-buffering brake platen; 8-centrifugal-block; 9-centrifugal brake shell; 10-manual brake; 11-manual brake adjustable lever; The manual ratchet adjustable lever of 12-; 13-ratchet; 14-drive unit rotatingshaft; 15-cushions fixture block; 16-cushions fixture block.
Five, embodiment:
Below in conjunction with accompanying drawing, the present invention is described further:
As shown in Figure 1, this reversal control device of screw pump comprises ratchet 13, pawl disk 3, friction buffer braking mechanism, pawl disk 3 is arranged on surface drive transmission shaft 14, ratchet 13 is arranged on the shell of drive unit transmission shaft 14, ratchet 2 is arranged in pawl disk 3, ratchet 2 blocks principle: ratchet 2 outwards opens because suffered centrifugal force can overcome spring force when surface drive operates, ratchet 13 is blocked in effect resilience when surface drive is out of service due to spring force, and ratchet 2 inwardly unidirectionally can only block ratchet 13.
Shown in composition graphs 2, friction buffer braking mechanism is made up of outer ratchet 4, friction plate 6, friction disk 5, outer ratchet 4 is fixedly installed togather with pawl disk 3, the outside correspondence of outer ratchet 4 is provided with friction disk 5, friction disk 5 and friction plate 6 drive fit, friction plate 6 is again by buffering brake platen 7 and ratchet 13 close contact, and friction disk 5 is in the middle of ratchet 13 and buffering brake platen 7 and compressed by stage clip, adjustment stage clip and the friction torque between adjustable friction disk 7 and ratchet 13.In addition, consult Fig. 5, Fig. 6, the inner ring of friction disk 5 position relative with ratchet with buffering fixture block 15, with buffering fixture block 16 on ratchet.
Outer ratchet 4 blocks principle: outer ratchet 4 when surface drive operates because suffered spring force is greater than suffered centrifugal force all the time and inoperative, when surface drive is out of service and generation ratchet 2 could not block ratchet 13, reversion can occur surface drive and speed reversal is more and more higher, when speed reversal reaches certain rotating speed, centrifugal force suffered by outer ratchet 4 just can overcome spring force and outwards open and block friction disk 5, after damped rotation several angle, buffering fixture block 15 on friction disk 5 blocks the buffering fixture block 16 on ratchet 13, outer ratchet 4 outwards unidirectionally can only block friction disk 5.
Shown in composition graphs 1, Fig. 4, centrifugal-block 8 is also provided with outside ratchet 13 of the present invention, centrifugal-block 8 closes and is buckled in outside ratchet 13, and be stuck on ratchet 13, centrifugal-block 8 outer surface is stained with brake block, in centrifugal-block 8 and brake block surround by brake shell 9, centrifugal-block 8, brake shell 9 form centrifugal automatic brake mechanism.
Centrifugal self-actuating brake principle: centrifugal-block 8 closes and is buckled on the external cylindrical surface of ratchet 13, blocked at circumferencial direction can only radially move by ratchet 13, when surface drive reverses, ratchet 13 will drive centrifugal-block 8 to rotate together, simultaneously centrifugal-block 8 under the influence of centrifugal force radially mobile with and produce friction catch moment of torsion with centrifugal brake shell 9, rotating speed is higher, that presses is tighter, the friction torque produced is larger, reverse reduces, after rotating speed reduces, friction torque reduces, equipment starts again to accelerate reversion, friction torque starts to increase, rotating speed starts again to reduce, go round and begin again like this and just achieve the object of release inversion energy automatically.
Pawl disk 3 arranged outside of the present invention has manual ratchet 1, and with Ka Ya or groove on pawl disk 3, manual ratchet 1 may be stuck on Ka Ya or groove, and the other end of manual ratchet 1 connects manual ratchet adjustable lever 12.Manual ratchet 1 blocks principle: when equipment needs manual stoppage; because manual ratchet 1 is unidirectional clamping mechanism; do not affect the normal operation of surface drive; so can first manual ratchet adjustable lever be unclamped before shutting down; manual ratchet 1 is pressed on pawl disk 3 under spring force; if ratchet 2 is malfunctioning after shutting down, when pawl disk 3 forwards certain position to, manual ratchet 1 just can block ratchet 13.Whether manual ratchet 1 just can find handy in operation, as existing problems can not shutdown maintenance, guarantees to block the safety with site operation personnel.
Also be provided with manual brake 10 outside ratchet 13 of the present invention, shown in composition graphs 3, manual brake 10 is filled the span of a man's arms outside ratchet 13, and manual brake is provided with manual brake adjustable lever 11.Manual brake 10 installs two semicircle brake shoe on ratchet 13, embracing brake shoe one end outward for these two is fixed on centrifugal brake shell 9 by bearing pin, the other end is provided with manual brake adjustable lever 11, regulate manual brake adjustable lever 11 i.e. adjustable manual brake 10 to hold the intensity of ratchet 13 tightly, centrifugal brake shell 9 is arranged on drive unit housing.
When equipment runs well; ratchet 2 outwards opens and separates with ratchet 13 under centrifugal action, and during shutdown, ratchet 2 is stuck on ratchet 13 under the action of the spring, because manual brake adjustable lever 11 is in the state of tightening; manual brake 10 is stopped dead ratchet 13, and reversion is stuck.During release reversion, slow adjustment adjustable lever, in under reaction torque effect, ratchet 2 drives ratchet 13, centrifugal-block 8 starts reversion, centrifugal-block 8 is radially separated with ratchet 13 under the influence of centrifugal force (be all the time block centrifugal-block 8 at circumferencial direction ratchet 13) and produce with brake shell 9 braking torque that rubs, rotating speed is higher, that presses is tighter, the friction torque produced is larger, reverse reduces, after rotating speed reduces, friction torque reduces, equipment starts again to accelerate reversion, friction torque starts to increase, rotating speed starts again to reduce, go round and begin again like this and just achieve the object of release moment of torsion automatically.
When equipment downtime; ratchet 2 could not block ratchet 13 because of a variety of causes; surface drive will reverse and speed reversal is more and more higher; when speed reversal reaches certain rotating speed; outer ratchet 4 opens under the influence of centrifugal force and is stuck on friction disk 5; friction disk 5 is after the buffering turned an angle; pawl disk is stuck; stop operating; now; regulate manual brake adjustable lever 11, drive ratchet 13 to rotate at the lower outside ratchet 4 of reaction torque effect, achieve so again the process that above-mentioned reversion is stuck or discharges.
After moment of torsion release terminates to shut down, down-hole roofbolt also likely remnant moment of torsion, this part moment of torsion also can discharge suddenly remaining moment of torsion under certain condition, produces threat to operator; So after moment of torsion discharges end shutdown automatically, regulate manual brake 10 that contingency can be avoided to occur.
In sum, the present invention has and effectively can block the reversal control device of screw pump with safe release function.
Above are only one embodiment of the present invention, if only do equal substituting, still within protection scope of the present invention to parts of the present invention.
Claims (4)
1. a reversal control device of screw pump, it is characterized in that: this reversal control device of screw pump comprises ratchet (13), pawl disk (3), friction buffer braking mechanism, friction buffer braking mechanism is made up of outer ratchet (4), friction plate (6), friction disk (5), outer ratchet (4) and pawl disk (3) are fixedly installed togather, the outside correspondence of outer ratchet (4) is provided with friction disk (5), friction disk (5) and friction plate (6) drive fit, friction plate (6) again with ratchet (13) drive fit; Described ratchet (13) outside is also provided with centrifugal-block (8), centrifugal-block (8) closes and is buckled in ratchet (13) outward, and being stuck on ratchet (13), in centrifugal-block (8) surrounds by brake shell (9), centrifugal-block (8), brake shell (9) form centrifugal automatic brake mechanism.
2. reversal control device of screw pump according to claim 1, it is characterized in that: described pawl disk (3) arranged outside has manual ratchet (1), with Ka Ya or groove on pawl disk (3), manual ratchet (1) may be stuck on Ka Ya or groove, and the other end of manual ratchet (1) connects manual ratchet adjustable lever (12).
3. reversal control device of screw pump according to claim 2, it is characterized in that: described ratchet (13) outside is also provided with manual brake (10), manual brake (10) is filled the span of a man's arms at ratchet (13) outward, and manual brake (10) is provided with manual brake adjustable lever (11).
4. reversal control device of screw pump according to claim 3, it is characterized in that: described friction disk (5) the inner ring position relative with ratchet is with buffering fixture block (15), ratchet (13) is also with buffering fixture block, after rotating under the drive of friction disk inner ring ratchet (4) outside, when damped rotation several angle runs to buffering fixture block (16) place of ratchet, the buffering fixture block (15) of friction disk snaps on the buffering fixture block (16) of ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025938.4A CN103122852B (en) | 2013-01-08 | 2013-01-08 | Reversal control device of screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025938.4A CN103122852B (en) | 2013-01-08 | 2013-01-08 | Reversal control device of screw pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103122852A CN103122852A (en) | 2013-05-29 |
| CN103122852B true CN103122852B (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310025938.4A Expired - Fee Related CN103122852B (en) | 2013-01-08 | 2013-01-08 | Reversal control device of screw pump |
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| Country | Link |
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| CN (1) | CN103122852B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242545B (en) * | 2013-06-17 | 2016-10-12 | 北京超同步科技有限公司 | A kind of alternating current asynchronous screw pump direct driving device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202579173U (en) * | 2012-05-18 | 2012-12-05 | 张连山 | Reverse hydraulic brake mechanism for screw pump driving device |
| CN202612095U (en) * | 2012-06-28 | 2012-12-19 | 孙光胜 | Safety device for screw rod oil-well pump |
| CN202628511U (en) * | 2012-06-16 | 2012-12-26 | 中国石油天然气集团公司 | Double-inversion-prevention screw pump driving device |
| CN102853011A (en) * | 2012-09-28 | 2013-01-02 | 北京世通华奥油田化学技术有限公司 | Braking device with sucker rod and speed changing box separating automatically after halt of screw oil pump |
| CN203201789U (en) * | 2013-01-08 | 2013-09-18 | 大庆油田有限责任公司 | Reversal control device for screw pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001140769A (en) * | 1999-11-12 | 2001-05-22 | Heishin Engineering & Equipment Co Ltd | Eccentric screw pump with single shaft and buffering method for stopping rotation |
| RO119475B1 (en) * | 2000-11-08 | 2004-11-30 | Confind S.R.L. | Unit for driving screw plunger pumps for oil lifting |
| RU2253753C1 (en) * | 2003-10-02 | 2005-06-10 | Брот Александр Робертович | Surface drive of submersible screw pump |
| CN201650727U (en) * | 2010-01-25 | 2010-11-24 | 张成功 | Disk-type power head anti-reverse mechanism of screw-type oil pump |
-
2013
- 2013-01-08 CN CN201310025938.4A patent/CN103122852B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202579173U (en) * | 2012-05-18 | 2012-12-05 | 张连山 | Reverse hydraulic brake mechanism for screw pump driving device |
| CN202628511U (en) * | 2012-06-16 | 2012-12-26 | 中国石油天然气集团公司 | Double-inversion-prevention screw pump driving device |
| CN202612095U (en) * | 2012-06-28 | 2012-12-19 | 孙光胜 | Safety device for screw rod oil-well pump |
| CN102853011A (en) * | 2012-09-28 | 2013-01-02 | 北京世通华奥油田化学技术有限公司 | Braking device with sucker rod and speed changing box separating automatically after halt of screw oil pump |
| CN203201789U (en) * | 2013-01-08 | 2013-09-18 | 大庆油田有限责任公司 | Reversal control device for screw pump |
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| Publication number | Publication date |
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| CN103122852A (en) | 2013-05-29 |
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| ASS | Succession or assignment of patent right |
Owner name: DAQING OIL FIELD CO., LTD. Free format text: FORMER OWNER: DAQING KMIDCO OIL TECHNOLOGY + EQUIPMENT CO., LTD. Effective date: 20130904 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Ye Inventor after: Wang Fengshan Inventor after: Sun Yanan Inventor after: Liu Yongxin Inventor after: Lu Mingyan Inventor after: Wang Guoqing Inventor after: Wang Xinmin Inventor after: Fu Changsheng Inventor after: Chen Jinsong Inventor before: Fu Changsheng Inventor before: Chen Jinsong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 163316 DAQING, HEILONGJIANG PROVINCE TO: 163453 DAQING, HEILONGJIANG PROVINCE Free format text: CORRECT: INVENTOR; FROM: FU CHANGSHENG CHEN JINSONG TO: YANG YE WANG FENGSHAN SUN YANAN LIU YONGXIN LU MINGYAN WANG GUOQING WANG XINMIN FU CHANGSHENG CHEN JINSONG |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20130904 Address after: 163453 Heilongjiang city of Daqing province Xibinlu No. 9 Applicant after: Daqing Oil Field Co., Ltd. Address before: 163316 room 713, Chuangxin building, hi tech Zone, Heilongjiang, Daqing Applicant before: Daqing Kmidco Oil Production Complete Set Equipment Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20200108 |