Bleeder
Technical field the utility model relates to oil field, the bleeder that a kind of pumpingh well is used.When pumpingh well is safeguarded and produced specifically, the liquid in the above oil pipe of oil well pump is leaked into a kind of instrument in the well.
Background technology is present, and having that the used bleeder of the pumpingh well of China Petroleum oil extraction system adopts always is following several.1, impacting type bleeder 2, the formula that builds the pressure bleeder 3, sleeve type are let out sliding device.And their unfolding mode is respectively, 1, impacting type is that sucker rod in the well and piston are all proposed, and adopts the mode of throwing bar from ground, the hollow pin of oil well pump bottom bleeder is severed, and make oil pipe be communicated with the draining work of finishing with sleeve pipe.But its deficiency is: when deposit was too much when rod parting, when piston is stuck or in the oil pipe, bleeder just can't be opened.2, the formula that builds the pressure also is that sucker rod in the well and piston are all proposed, and the mode that ground adopts pump truck to suppress is suppressed out bleeder, and oil pipe is communicated with sleeve pipe, finishes draining work.Weak point: the oil pipe in the well and the pump truck on instrument and ground all must satisfy the pressure requirement.When OIH pipe and instrument because of easily oil pipe and instrument are suppressed when aging appears in long-term the use, cause down-hole accident, increase maintenance cost.3, sleeve type: its unfolding mode is that exoneration device G.I.H is installed on sucker rod, and in the last process of carrying sucker rod, the exoneration device is opened the bleeder sliding sleeve, makes oil pipe be communicated with the draining work of finishing with sleeve pipe during maintenance.Weak point: when rod parting, or during exoneration device serious wear, just can't open bleeder.More than three kinds of bleeders under situation about can't open, also can cause oil in the oil pipe that blowout easily takes place during construction and flow into the well site and cause environment pollution.Also easy breaking out of fire accident when blowout takes place.And they also can show some problems in normal productive process, as: " impacting type bleeder " often causes the fixed screw of pin loosening because oil well pump is wriggled in well for a long time, and pin is come off, and bleeder is opened, and forces oil well to stop production." formula that builds the pressure bleeder " because of artificial destruction or work mistake, causes in the well to build the pressure, and makes bleeder open oil well and stops production." sleeve type is let out sliding device " do not keep off because of adjusting dead space, and the too high exoneration device of carrying that easily makes is opened sliding sleeve, causes oil well to stop production.All there are a lot of drawbacks in existing in a word various bleeders.The purpose of this utility model is a kind ofly improved the existing deficiency with bleeder with regard to being to design, to fill up the new tool of prior art blank.
The summary of the invention the purpose of this utility model is achieved in that it is by top connection (1), sleeve (3), positive and negative suspension joint (8), O RunddichtringO (2) (6) (9), connect to form the outside locking device of bleeder with the pin thread of cone (10); Connect to form drainage device by the draining hole (7) on suspension box cupling (4), central tube (5) and the central tube and the box of cone (10); Box by cone (10) bottom is connected with lower contact (14), in the slip groove on slips (11) (19) connection slip spider (12) and the cone of packing into (10), slip spider (12) is connected with slip ring (13), wiper block (22) is housed on the slip ring, the length track is arranged in the slip ring, and cover is gone up the bracing or strutting arrangement three parts of forming with the track pin (21) in the lower contact (14) and is formed.
The utility model compared with prior art, and is reasonable in design, has the following advantages: still bleeder can be opened when deposit is too much in rod parting, seizure of piston or the oil pipe in well; In the work bracing or strutting arrangement opened the wriggling that to avoid oil pipe and oil well pump; Prolong the application life of oil pipe and oil well pump; Also can not influence the operate as normal of bleeder because of work mistake or artificial destruction.Can enhance productivity, reduce cost of production again, of the present utility model normally opening stopped the pollution of greasy dirt to environment.It is a kind of new tool that high practical value and promotional value are arranged.
Appended drawings 1 is the utility model surface structure schematic diagram, and accompanying drawing 2 is the bracing or strutting arrangement sectional drawing, and accompanying drawing 3 is the erection device sectional drawing.
Among the figure: 1, top connection, 2, " O " type cushion rubber, 3, sleeve, 4, hang box cupling, 5, central tube, 6, " O " type cushion rubber, 7, the draining hole, 8, positive and negative suspension joint, 9, " O " type cushion rubber, 10, cone, 11, horizontal tooth slips, 12, slip spider, 13, slip ring, 14, lower contact, 15, slip ring sleeve, 16, pinning, 17, pinning, 18, slip ring sleeve, 19, perpendicular tooth slips, 20, pin, 21, track pin, 22, wiper block, 23, spring is positioned on the figure three.
Specific implementation method is referring in the accompanying drawing, and the utility model is connected to form the outside locking device of bleeder by top connection 1, sleeve 3, positive and negative suspension joint 8, " O " RunddichtringO 2,6,9 and cone 10, pin thread; By hanging box cupling 4, central tube 5, connecting to form drainage device with the box of draining hole 7 and cone 10 on the central tube; Box by cone 10 bottoms is connected with lower contact 14, in the slip groove on slips 11,19, connection slip spider 12 and the cone 10 of packing into, slip spider 12, form by two halves, the centre has two pinnings 21 locked, be connected with slip ring 13, wiper block 22 is housed on the slip ring, there is spring 23 to support wiper block 22 in the righting trough, wiper block 22 is fixed in the righting trough by the slip ring sleeve 15,18 at two ends, slip ring sleeve 15,18 is by pinning 16,17 lockings, long and short two bar track is arranged in the slip ring 13 and communicate, the track pin 21 in the lower contact 14 is in the short track.Top connection 1 connects oil pipe during use, and lower contact 14 connects oil well pump, G.I.H.When maintenance need be opened bleeder, on carry two to three meters in oil pipe, track pin 21 is up, it is motionless that slip ring 13 keeps under the effect of wiper block 22 frictional force, at this moment track pin 21 goes upward to the place that is communicated with of short track top and long track, and the right-hand rotation pipe is leant on the 3-4 circle, and track pin 21 is also leant on right-hand rotation with pipe, force slip ring 13 up and left-hand rotations along long track inclined-plane, track pin 21 is entered in the long track.At this moment it is descending along long track to transfer tubing string track pin 21, it is motionless that slip ring 13 keeps under the effect of wiper block 22 frictional force, lower contact 14 and cone more than 10 each one all descending, during cone 10 is descending, slips 11,19 is motionless under the effect of slip ring 13 with slip spider 12, and the relative displacement of maintenance and cone 10, this moment cone 10 inclined-planes and slips 11, the also relative displacement of 19 inclined-planes, horizontal diameter increases, cause the horizontal tooth that has angle on the slips 11, the internal surface of sleeve pipe of nipping, at this moment tubing string continues descending, until the slips 11 on the cone 10, with sleeve pipe stuck till, finish support works, at this moment ground sees that tensiometer stops to transfer when checking the decline 2KN left and right sides, continue the right-hand rotation tubing string, top connection 1 and sleeve 3 and positive and negative suspension joint 8, at the effect infradextroversion of external force, and central tube 5 keeps motionless with cone 10 under the effect of slips 19 perpendicular teeth, and the positive and negative suspension joint 8 of this moment is forced to release under the torsion of turning right with the left hand thread of the junction of cone 10, and positive and negative suspension joint 8 is separated with cone 10.The positive and negative suspension joint 8 of upper lifting pipe post produces displacement with cone 10, and expose in the draining hole 7 on the central tube 5, makes the oil in the oil pipe leak into sleeve pipe.On carry, positive and negative suspension joint 8 is subjected to displacement with suspension box cupling 4, suspension box cupling 4 lower surfaces are contacted with positive and negative suspension joint 8, forming one continues up, cone 10 is up under the effect of hanging box cupling 4 at central tube 5, slips 11,19 slip rings 13 produce displacement with cone 10, and draw under the effect on inclined-plane under the effect of wiper block 22 friction.Track pin 21 is up, forces slip ring 13 to produce dextrorotation, makes track pin 21 enter short track, and up with tubing string, at this moment whole draining work is finished.