CN205349277U - There is pole beam -pumping unit well head sealing device - Google Patents
There is pole beam -pumping unit well head sealing device Download PDFInfo
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- CN205349277U CN205349277U CN201620018396.7U CN201620018396U CN205349277U CN 205349277 U CN205349277 U CN 205349277U CN 201620018396 U CN201620018396 U CN 201620018396U CN 205349277 U CN205349277 U CN 205349277U
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Abstract
The utility model discloses a contain the there is pole beam -pumping unit well head sealing device of flexonics unit, it still contains prevents spouting unit, closing well unit, rights rectify unit and lubricated unit. Wherein, the flexonics unit sets up between well head and packing box, including lower flexible sealing cover, down flexible sealing cover shell, sealed steel loop, go up the flexible sealing cover, the flexonics unit is whole constantly along with the polished rod swing with top to realize that the packing is coaxial with the polished rod developments, can thoroughly solve the packing problem of grinding partially. And, when can also solving static coaxial and lubricated problem and polished rod between polished rod and packing and take off absolutely, the device prevents the problem of spouting.
Description
Technical field
The present invention relates to a kind of rod beam-pumping unit well head sealing apparatus, particularly relate to the flexible connection unit of rod beam-pumping unit well head sealing apparatus.
Background technology
International major part oil field adopts sucker rod pumping equipment, and sucker rod drives oil well pump to pump in oil pipe, oil is risen to ground, is delivered to upper level system by pipeline.At well head oil pipeline well mouth sealing device installed above.Usual well mouth sealing device includes blowout prevention unit, closing well unit, righting correction unit, packing box, and the most crucial part of its work is packing box, realizes the rod pumping mouth of duty is sealed by compressing the packing in packing box.The effect of well mouth sealing device is to ensure that sucker rod pumping machine wellhead sealing in working order, when changing packing state, disconnected bar state.
The sealing mechanism of rod beam-pumping unit well head sealing apparatus is: be filled in by packing in the annular space that polished rod and packing box are formed, and gland is pressed down against packing makes it produce deformation, increases polished rod, pressure between packing box inwall and packing, reaches sealing wellhead purpose.
Rod beam-pumping unit well head sealing apparatus mainly includes with lower unit:
Blowout prevention unit: daily do not affect sucker rod pumping machine normal operation, the action component of blowout prevention unit rapid automatic plugging well head under the impact of liquid when sucker rod pumping machine light rod-broken.
Closing well unit: daily do not affect sucker rod pumping machine normal operation, when sucker rod pumping machine is shut down, and changes packing in packing box, manual operation closing well unit makes its internal packing be squeezed generation deformation, closes well head.
Righting correction unit: under closing well state, operate this unit, makes packing and polished rod static coaxial, reaches the righting to packing box and rectify a deviation.
Packing box: multiple packings are put into packing box, by being pressed down against packing so that it is produce deformation reach sucker rod pumping machine in working order time wellhead sealing.Ideally, packing box must keep and polished rod dynamic coaxial (here by packing box or packing group and polished rod moment keeping parallelism, concentric be called dynamic coaxial), ensures there is sufficient lubrication between packing and polished rod, it is to avoid the eccentric wear of packing and dry grinding simultaneously.
In production practices; km is gone up at least due to oil well depth; several kms at most, the well head of oil well can not keep and polished rod dynamic coaxial, and its reason has be static error at two: one: i.e. the not coaxial produced error of well head and polished rod during sucker rod pumping machine stopped status.The Engineering Error that it includes underground, ground construction brings, and the error accumulation that a period of time geological transformation, weather, environmental change etc. produce.Two is dynamic error: i.e. the not coaxial produced error of well head during sucker rod pumping machine duty and polished rod.It includes the error during work of bar oil pumper caused by the shake of polished rod, bending etc.；The error produced in the change procedures such as geology, weather, environment.
Owing to closing well unit position of polished rod under switch two states changes, so operating existing righting correction unit, cannot to realize the static state of packing and polished rod coaxial, existing well mouth sealing device does not possess dynamic righting deviation-correcting function, and then causing when existing sucker rod pumping machine works, packing is in and polished rod dynamic out-of-alignment eccentric wear (packing is called eccentric wear by polished rod uneven wear) state all the time.
The Chinese utility model patent that publication number is CN201024953Y discloses a kind of Multi-functional automatic deviation adjustment nude pole sealer, and including sealing device, automatically deviation-adjusting device, sealing device therein is made up of packing, pressure ring, packing pressure cap, hands handle；Automatically deviation-adjusting device by adjusting ball, adjust pressure cap, supporting positive cover, "○" type circle, main body are constituted.Former sealing instrument is improved by this utility model, will adjust ball and adjustment pressure cap, supporting positive cover, "○" type circle composition one in automatically deviation-adjusting device；Being designed as spherical by body top inner surface, middle part is taper, and bottom is tubular, and body top is all dynamic with polished rod with the binding site of bottom with the binding site at middle part and middle part to be coordinated, and tapered middle is equipped with sealed ball float；Shut-in well rubber valve is installed in the bottom of main body.Sealer after improvement can solve the problem of the sealing ring eccentric wear owing to the skew of light rod axis and sealed body axis causes, leakage crude oil, and can automatic deflection adjusting；When polished rod comes off, automatic closing well, is convenient for changing packing.
Closing well unit is under closing well state, it is necessary to assure packing box and light-rod coaxial, in order to the replacing of packing, reduces the damage to packing, polished rod and operator.And the rubber valve formula of above-mentioned patent disclosure and existing rotary extrusion type spinning closing well unit all cannot realize.Under sucker rod pumping machine stopped status, adjust righting correction unit and must assure that packing box and light-rod coaxial.And existing flange ball and eccentric ball righting correction unit are all because being subject to the interference of closing well unit, execute-in-place is difficult to adjust perfect condition.
The Chinese utility model patent that publication number is CN200985764Y discloses a kind of rod pump oil recovery well head blowout preventer, from top to bottom by oil cap, dust ring, pressure cap, righting train, coupling sleeve, spring, cone-type spiral packing, seal bulb, lower contact is constituted, it is characterized in that righting train is by upper, lower two set righting trains are constituted, upper righting train is by oil cap, dust ring, pressure cap is pressed on the top of coupling sleeve, lower righting train seat is in the bottom sealing bulb, coupling sleeve passes through thread connection with sealing bulb, bulb pressure cap is placed on bulb top and passes through thread connection with lower contact, cone-type spiral packing is by upper, lower two fabric become, upper group of cone-type spiral packing seat is in the cone of coupling sleeve, lower group of Screw disk-seal tube seat is in the lower Screw disk-seal tube seat top sealing bulb inner chamber, on, lower two groups of Screw disk-seal tubes are by upper, lower spring set passes through spring top clamping.
During with bar oil pumper normal operation, sealings ball and existing ball sealer in baffle-type blowout prevention structure, baffle plate that this patent adopts are affected by abrasion in various degree, so existing majority blowout prevention unit do not have blowout prevention effect when light rod-broken.
Owing to existing well mouth sealing device is all without the eccentric wear and the lubrication problem that thoroughly solve rod pumping packing and polished rod, so, all there is following defect in existing well mouth sealing device；One, the service life of packing and polished rod is short, and packing dismounting difficulty is big.Two, evaporating, emitting, dripping or leaking of liquid or gas randomness is high, contaminated environment, it is necessary to workman's patrol every day checks, production run cost is high.Three, packing major part area is excessive to pressure and the frictional force of polished rod, thus causing that oil pumper energy consumption is too high.
Summary of the invention
It is desirable to provide one realizes dynamic coaxial between polished rod (7) and packing (9), thoroughly solves the polished rod (7) rod beam-pumping unit well head sealing apparatus to packing (9) eccentric wear problem.This sealing device can also solve the static coaxial and lubrication problem between polished rod (7) with packing (9).Meanwhile, the present invention also solves blowout prevention problem when polished rod (7) breaks de-.
The rod beam-pumping unit well head sealing apparatus of the present invention includes flexible connection unit, this flexible connection unit is arranged between well head and packing box, the flexible connection unit above section entirety moment swings with polished rod (7), thus realizing packing (9) and polished rod (7) dynamic coaxial, thoroughly solve packing (9) eccentric wear problem.
Further, the rod beam-pumping unit well head sealing apparatus of the present invention also includes flexible connection unit, wherein, flexible connection unit includes: lower flexible gland (37), lower flexible gland shell (12), sealing steel ring (11), upper flexible gland (10).
Further, the rod beam-pumping unit well head sealing apparatus of the present invention also includes packing box, wherein, packing box includes: (4), pressure bearing (2), packing box pressing cap (1) under (3), oscillating bearing on packing (9), packing outer sleeve (8), packing pressure ring (5), oscillating bearing.
Further, the rod beam-pumping unit well head sealing apparatus of the present invention also includes righting correction unit and closing well unit, and wherein, righting correction unit includes: righting correction base (25), righting correction base sealing ring (42), correction sealing ring (23), sealing ring (45) on correction sealing ring, correction sealing ring lower seal (46), be flexible coupling set (22), double, two hemisphere centralizers (20), horizontal pressure ring (21), sealing ring (41) on horizontal pressure ring, horizontal pressure ring lower seal (43), righting correction pressure cap (44), righting correction pressure cap pin (24), wherein, closing well unit includes: closing well device base (18), closing well packing (19), closing well packing pressure ring (15), sealing ring (38) on closing well packing pressure ring, closing well packing pressure ring lower seal (40), closing well packing pressure ring mentions pin (39), half tapered polished rod locating piece (16), non-return oil collecting ring (14), closing well device pressure cap (13), closing well device pressure cap pin (17).
Further, the rod beam-pumping unit well head sealing apparatus of the present invention also includes going back lubrication unit, solid lubrication device is installed between packing (9) and well mouth sealing device top continue, kollag (35) is quantitatively provided, wherein, solid lubrication device includes: U-shaped connector (31), waterproof grommet (36), kollag shell (32), kollag (35), compression spring (34), plug (33), non-return oil collecting ring (14) is installed between packing box and well head, continue, there is provided oil as fluid lubricant, wherein, non-return oil collecting ring (14) is to have certain thickness cyclic spring reticulate body, internal diameter is suitable with polished rod (7) diameter, oil-water mixture individual event can pass through this net entrance top cavity, and not easily pass through this net and flow out cavity.
Further, the rod beam-pumping unit well head sealing apparatus of the present invention also includes blowout prevention unit, wherein, blowout prevention unit includes: wellhead collar clamp joint (26), wellhead collar clamp joint sealing circle (47), support spring (30), lower supporting ring (29), upper bracket (28), spray-proof ball (48), spray-proof ball balancing weight (49), righting correction base (25), righting correction base pin (27).
The present invention realizes the dynamic coaxial between polished rod (7) and packing (9), fundamentally solves polished rod (7) to packing (9) eccentric wear problem；Continue quantitative filling kollag (35) while realizing self-lubricating, solve the problem of dry grinding between packing (9) and polished rod they (7)；Thus reaching the service life extending polished rod (7) with packing (9), four indices safe and environment-friendly, energy-conservation, efficient all reaches unprecedented height.
1, safe efficient: first, greatly extend polished rod (7) and packing (9) service life, packing (9) improves decades of times service life, decrease the replacing number of times of packing (9), originally do not change packing (9) tens times to tens times every year not etc., for the sake of assurance, use apparatus of the present invention, packing (9) replacement cycle can be decided to be 1 year；Secondly, under closing well state, packing (9) group is static with polished rod (7) coaxial, and dismounting packing (9) is easy；Therefore, while reducing labor strength, improving production efficiency, also objective guarantee is provided for safety in production.
2, energy-saving and environmental protection: the present invention realizes the dynamic coaxial between polished rod (7) and packing (9), quantitative filling kollag (35) is continued while self-lubricating, when above two aspects ensure that sucker rod pumping machine normal operation, packing (9) is minimum to the frictional force of polished rod (7), oil pumper energy consumption significantly reduces, energy-saving effect is obvious, the theoretical calculation according to Duo Jia scientific research institution, and minimum energy-conservation about 5%；The blowout prevention cellular construction of apparatus of the present invention is simple, reliable in action, conscientiously plays blowout prevention effect, protects environment；Apparatus of the present invention have stopped the random generation of well head evaporating, emitting, dripping or leaking of liquid or gas, in installation, use, maintenance, the disconnected de-failure process of bar, well head surrounding is pollution-free.
Accompanying drawing explanation
Fig. 1 is rod beam-pumping unit well head sealing apparatus front view；
Fig. 2 is the flexible connection unit front view of rod beam-pumping unit well head sealing apparatus；
Fig. 2-1 is flexible gland in flexible connection unit；
Fig. 2-2 is flexible gland under flexible connection unit；
Fig. 3 is the rod beam-pumping unit well head sealing apparatus front view including packing box, flexible connection unit, lubrication unit；
Fig. 4 is the closing well unit of rod beam-pumping unit well head sealing apparatus, righting correction unit front view；
Fig. 5 is blowout prevention unit blowout prevention state front view；
Fig. 6 is lubricator front view.
Detailed description of the invention
Embodiment one:
Righting correction unit (realizes static coaxial): in order to overcome existing righting deviation correcting technology to be difficult to the problem operating and judging, the present invention devises a kind of righting correction unit with closing well unit co-operating.
Wherein, righting correction unit is as shown in Figure 4, base (25) of righting being rectified a deviation is threadeded with the wellhead collar clamp joint (26) of blowout prevention unit, sealed by wellhead collar clamp joint sealing circle (47), by horizontal pressure ring (21), righting correction pressure cap (44) is enclosed within double, two hemisphere centralizer (20), double, two hemisphere centralizers (20) and closing well device base (18) coaxial welding, sealing ring (45) correction sealing ring lower seal (46) on correction sealing ring is embedded correction sealing ring (23), sealing ring (41) horizontal pressure ring lower seal (43) on horizontal pressure ring is embedded horizontal pressure ring (21), from the bottom to top successively by correction sealing ring (23), double, two hemisphere centralizers (20), horizontal pressure ring (21) is freely placed in righting correction base (25) of activity space, the set (22) that will be flexible coupling is enclosed within horizontal pressure ring (21) and correction sealing ring (23), righting correction pressure cap (44) is threaded connection with righting correction base (25), fix with righting correction pressure cap pin (24), the set (22) that is flexible coupling is by correction sealing ring (23), double, two hemisphere centralizers (20), horizontal pressure ring (21) links into an integrated entity, both can ensure that correction sealing ring (23), double, two hemisphere centralizers (20), horizontal pressure ring (21) moves integrally, do not affect again the realization of righting function.
Wherein, closing well unit is as shown in Figure 4, from the bottom to top successively by closing well packing (19), half tapered polished rod locating piece (16), with closing well packing pressure ring (15) of sealing ring (38) and closing well packing pressure ring lower seal (40) on closing well packing pressure ring, non-return oil collecting ring (14) puts into closing well unit base (18), when two and half tapered polished rod locating pieces (16) merge, its profile matches with closing well packing pressure ring (15) lower chamber completely, a circular hole is formed between two and half tapered polished rod locating pieces (16), its internal diameter and polished rod (7) equal diameters, closing well device pressure cap (13) is threadeded with closing well unit base (18), fixed by closing well device pressure cap pin (17), sealed by sealing ring (38) on closing well packing pressure ring between closing well device pressure cap (13) and closing well packing pressure ring (15), sealed by closing well packing pressure ring lower seal (40) between closing well packing pressure ring (15) and closing well unit base (18), during closing well, closing well packing pressure ring (15) moves downward, drive in the two and half tapered polished rod locating pieces (16) cone space automatically into closing well packing pressure ring (15), by placed in the middle by force for polished rod (7) and locking while closing well, the problem that existing righting deviation correcting technology is difficult to judge whether to put in place is solved by this simple operations, when driving a well, closing well packing pressure ring (15) is mentioned pin (39) by closing well packing pressure ring and is mentioned, two and half tapered polished rod locating pieces (16) leave the cone space of closing well packing pressure ring (15) naturally, half tapered polished rod locating piece (16) is freely movable between closing well packing (19) and closing well packing pressure ring (15), two and the half tapered polished rod locating pieces (16) placed in closing well unit, when normal operation not frayed, while closing well packing (19) being compressed when closing well, by placed in the middle by force for polished rod (7) and locking.
Closing well unit realizes static righting correction with righting correction unit co-operating, concrete operation step is as follows: screw closing well device pressure cap (13), closing well packing pressure ring (15) moves downward, drive in the two and half tapered polished rod locating pieces (16) cone space automatically into closing well packing pressure ring (15), by placed in the middle by force for polished rod (7) and locking while closing well, now polished rod (7) has deviateed natural place, then righting of suitably outwarding winding correction pressure cap (44), decontrol oil pumper parking brake, polished rod (7) is allowed to drive double, two hemisphere centralizer (20) to move upward by closing well unit, tension parking brake, continue righting correction pressure cap (44) of suitably outwarding winding, thoroughly release the constraint that unit action component that righting is rectified a deviation is overall, rock several lower polished rod (7), righting correction unit action component is driven to move integrally correct position while making polished rod (7) return to natural place, realize correction, screw rapidly righting correction pressure cap (44) subsequently, righting correction unit is locked while realizing righting, then closing well device is opened, polished rod is in the raw, position does not change, when without artificially judging, static righting is rectified a deviation, and unit is automatic accurate to be adjusted in place, realize packing static with polished rod coaxial.
Embodiment two:
With bar oil pumper in running, the movement locus of polished rod (7) is straight line scarcely, but the moment with vibration and swings, and namely has transverse motion components, thus causing packing (9) eccentric wear；All without the objective requirement considering that dynamic righting is rectified a deviation in the well mouth sealing device design of prior art.The rod beam-pumping unit well head sealing apparatus of the present invention includes flexible connection unit, as shown in Figure 2, lower flexible gland (37) is put into lower flexible gland shell (12) inner, sealing steel ring (11) is downwardly in lower flexible gland (37), upper flexible gland (10) is embedded packing outer sleeve (8) bottom, freely it is placed on sealing steel ring (11), sealing steel ring (11), closing well device pressure cap (13) all passes through boss and upper flexible gland (10), lower flexible gland (37) connects, with satisfied honey envelope requirement, as shown in Figure 3, sealing steel ring (11), sufficient space is left to meet Operations Requirements between lower flexible gland shell (12) and closing well device pressure cap (13), when sucker rod pumping machine works, flexible connection unit and packing (9) linkage, under the drive of packing (9), flexible connection unit entirety follows polished rod (7) swing, this flexible connection unit is arranged between well head and packing box, the flexible connection unit above section entirety moment swings with polished rod (7), thus realizing packing (9) and polished rod (7) dynamic coaxial, thoroughly solve prior art adopts between packing box and well head to be rigidly connected, packing cannot follow the motion of polished rod and packing (9) the eccentric wear problem that causes.Upper flexible gland (10) is characterised by that the first half is inverted cone cylinder, is conducive to the sealing between packing outer sleeve (8), and its lower half is the cylinder with a groove, is stuck on packing outer sleeve (8) by groove；Lower flexible gland (37) is characterised by that the cylinder of reducing is arranged at bottom, be conducive to and the combination of lower flexible gland shell (12), prevent the excessive flexible gland at present of pressure (37) from removing from lower flexible gland shell (12), upper flexible gland (10) and lower flexible gland (37) are extraordinary organic material, it is possible to realize dynamic seal (packing).
The rod beam-pumping unit well head sealing apparatus of the present invention also includes the parts such as packing box, as shown in Figure 3, packing (9) is put into packing outer sleeve (8), packing pressure ring (5) is inserted packing outer sleeve (8), successively by (4) under oscillating bearing, on oscillating bearing (3), pressure bearing (2), packing box pressing cap (1) is enclosed within packing pressure ring (5), packing box pressing cap (1) is connected with closing well device pressure cap (13) by screw thread, do not contact between packing outer sleeve (8) with packing box pressing cap (1) and have laterally movable space, when sucker rod pumping machine works, polished rod (7) drives packing (9), flexible connection unit, under oscillating bearing (4), on oscillating bearing (3), pressure bearing (2) freely-movable, thus realizing packing (9) and polished rod (7) dynamic coaxial.
Embodiment three:
In order to overcome prior art blowout prevention unit misoperation and the defect being failure to actuate, the present invention adopts the principle of globe valve completely, as shown in Figure 5, spring (30) will be supported from the bottom to top successively, lower supporting ring (29), wellhead collar clamp joint (26) cavity freely put into by upper bracket (28), spray-proof ball (48) rotates axle and freely puts into upper bracket groove, wellhead collar clamp joint (26) is connected with righting correction base (25) by screw thread and is fixed by righting correction base pin (27), wellhead collar clamp joint (26) is sealed with righting correction base (25) by wellhead collar clamp joint sealing circle (47).Spray-proof ball (48) has the circular hole with its diameter for axis appropriate size, spray-proof ball (48) side has the closure hemisphere that proportion is less, relative opposite side has the spray-proof ball balancing weight (49) that proportion is bigger, when oil pumper is properly functioning, polished rod (7) this circular hole of traverse, the closure hemisphere of spray-proof ball (48) is in standing state, without any abrasion, spray-proof ball balancing weight (49) side hemisphere lower limb inwall touches with polished rod (7) all the time, spray-proof ball balancing weight (49) and closure hemisphere are in and polished rod almost perpendicular level, judge polished rod (7) existence, gather the disconnected de-signal of polished rod (7)；When oil-extractor polish-rod (7) breaks de-, spray-proof ball (48) is under the effect of spray-proof ball balancing weight (49), moment rotates and closure hemisphere is pushed into upper pipeline place, as long as liquid has pressure effectively to block, overcome blowout prevention unit misoperation and the double risks being failure to actuate.
Embodiment four:
In sucker rod pumping machine running, owing to polished rod (7) runs through packing box, open to the outside world in packing box two ends, in order to overcome in prior art fluid lubricant can not in packing box long-term mass storage, a difficult problem for uncontrollable fluid lubricant weight feed constantly again, the rod beam-pumping unit well head sealing apparatus of the present invention is provided with lubrication unit, for continuing between polished rod (7) and packing (9), kollag (35) and fluid lubricant are quantitatively provided, this unit includes solid lubrication device and non-return oil collecting ring (14), as shown in Figure 3, rainwater diversion pipe (6) is connected (5) with packing pressure ring by screw thread, U-shaped connector (31) is inserted in the circular hole of packing pressure ring (5), and fix with pin, as shown in Figure 6, waterproof grommet (36) embeds in U-shaped connector (31), U-shaped connector (31) is connected with kollag shell (32) by screw thread, successively by kollag (35), compression spring (34), plug (33) puts kollag shell (32) into, compression spring (34) promotes the light press polish bar (7) of kollag (35), during oil pumper work, polished rod (7) ceaselessly adheres to kollag (35), and constantly form accumulation at the contact surface of packing (9) Yu polished rod (7), continue for providing between packing (9) and polished rod (7), kollag (35) is quantitatively provided, as shown in Figure 4, non-return oil collecting ring (14) is installed between closing well device pressure cap (13) and closing well packing pressure ring (15), non-return oil collecting ring (14) is to have certain thickness cyclic spring reticulate body, internal diameter is suitable with polished rod (7) diameter, its remote supersteel ferrum of adsorptivity to crude oil, the materials such as rubber；During oil pumper upstroke, oil-water mixture with pressure passes through this net, enter in the cavity of more than non-return oil collecting ring (14), during oil pumper down stroke, crude oil major part remains in cavity, and fraction flows out cavity together with water, and this process constantly repeats, full crude oil will be stored up in cavity, overcome High water cut rod pumping and take out the problem of packing (9) unlubricated friction of well.
Embodiment five: change packing
After rod beam-pumping unit well head sealing apparatus installation and operation 1 year, generally should regularly replace packing (9), first shut down when changing packing, screw closing well device pressure cap (13) closing well, open packing box pressing cap (1), by packing pressure ring (5) and be fixed on polished rod eye with upper-part, suitably height upwards elected by packing outer sleeve (8) by both hands, again packing outer sleeve (8) is retracted downwards original position, packing (9) and on to flexibly connect sealing shroud (10) naturally exposed outside, do not use any instrument to replace with and flexibly connect sealing shroud (10), under flexibly connect sealing shroud (37) and packing (9), screw packing box pressing cap (1)；Change packing each time and all must carry out static righting correction, to eliminate the static error of early stage accumulation, righting of suitably outwarding winding correction pressure cap (44), decontrol oil pumper parking brake, polished rod (7) is allowed to drive double, two hemisphere centralizer (20) to move upward by closing well unit, tension parking brake, continue righting correction pressure cap (44) of suitably outwarding winding, rock several lower polished rod (7), screw rapidly righting correction pressure cap (44) subsequently, finally open closing well device pressure cap (13) to drive a well, start oil pumper, the degree that screws of packing box upper pressing cap (1) is not generated heat with polished rod (7) and is advisable without oil.
Although given embodiment is described; but these embodiments are used only for illustrating; its protection domain being not intended to limit the present invention; in fact; the embodiment that description is recorded can be implemented with various modes of texturing; namely above-described embodiment can be made the deformation such as various omission, replacement and change based on the spirit of the present invention, and claims include these deformation or amendment, thus they will fall into protection scope of the present invention.
Claims (23)
1. connecting a unit, this connection unit is arranged between well head and packing box, can be used for rod pumping mouth and seals, it is characterised in that: this connection unit is flexible connection unit.
2. connect unit as claimed in claim 1, it is characterised in that: time not coaxial between polished rod and the packing in packing box in sucker rod pumping machine work process, described flexible connection unit links with packing, makes packing reach dynamic coaxial with polished rod motion.
3. connect unit as claimed in claim 2, it is characterised in that: described flexible connection unit includes lower flexible gland (37), lower flexible gland shell (12), sealing steel ring (11), upper flexible gland (10).
4. connect unit as claimed in claim 3, it is characterised in that: the upper flexible gland first half is inverted cone cylinder, and its lower half is the cylinder with a groove, is stuck on packing outer sleeve (8) by groove.
5. connect unit as claimed in claim 3, it is characterised in that: the cylinder of reducing is arranged at lower flexible gland (37) bottom.
6. one kind includes just like the rod beam-pumping unit well head sealing apparatus connecting unit described in claim 1-5, it is characterised in that: described flexible connection unit may be provided at the optional position between well head and packing box.
7. one kind includes the rod beam-pumping unit well head sealing apparatus connecting unit as claimed in claim 6, it is characterised in that: this sealing device also includes blowout prevention unit, closing well unit and righting correction unit.
8. rod beam-pumping unit well head sealing apparatus as claimed in claim 7, it is characterized in that: described blowout prevention unit includes spray-proof ball (48), spray-proof ball (48) has the circular hole with its diameter for axis appropriate size, this circular hole of polished rod (7) traverse during sucker rod pumping machine normal operation.
9. rod beam-pumping unit well head sealing apparatus as claimed in claim 8, it is characterized in that: spray-proof ball (48) side has the closure hemisphere that proportion is less, relative opposite side has the spray-proof ball balancing weight (49) that proportion is bigger, sucker rod pumping machine normal operation, spray-proof ball balancing weight (49) side hemisphere lower limb inwall touches with polished rod (7) all the time, spray-proof ball (48) is in warming up state, when oil-extractor polish-rod (7) breaks de-, spray-proof ball (48) is under the effect of spray-proof ball balancing weight (49), after rotation, closure hemisphere is pushed into upper pipeline place.
10. rod beam-pumping unit well head sealing apparatus as claimed in claim 9, it is characterized in that: spring (30) will be supported from the bottom to top successively, lower supporting ring (29), wellhead collar clamp joint (26) cavity freely put into by upper bracket (28), spray-proof ball (48) rotates axle and freely puts into upper bracket (28) groove, wellhead collar clamp joint (26) is connected with righting correction base (25) by screw thread and is fixed by righting correction base pin (27), wellhead collar clamp joint (26) is sealed with righting correction base (25) by wellhead collar clamp joint sealing circle (47).
11. rod beam-pumping unit well head sealing apparatus as claimed in claim 7, it is characterised in that: correction sealing ring (23), double; two hemisphere centralizer (20), horizontal pressure ring (21) are linked into an integrated entity by described righting correction unit by the set (22) that is flexible coupling.
12. rod beam-pumping unit well head sealing apparatus as claimed in claim 11, it is characterised in that: described righting correction unit also includes righting correction base (25) and righting correction pressure cap pin (24).
13. rod beam-pumping unit well head sealing apparatus as claimed in claim 12, it is characterized in that: from the bottom to top successively will with the correction sealing ring (23) of sealing ring (45) and correction sealing ring lower seal (46) on correction sealing ring, double, two hemisphere centralizers (20), freely it is placed in righting correction base (25) of activity space with the horizontal pressure ring (21) of sealing ring (41) and horizontal pressure ring lower seal (43) on horizontal pressure ring, the set (22) that will be flexible coupling is enclosed within horizontal pressure ring (21) and correction sealing ring (23), righting correction pressure cap (44) is threaded connection with righting correction base (25), fix with righting correction pressure cap pin (24).
14. rod beam-pumping unit well head sealing apparatus as claimed in claim 7, it is characterised in that: described closing well unit includes positioner.
15. rod beam-pumping unit well head sealing apparatus as claimed in claim 7, it is characterised in that: the positioner of described closing well unit includes half tapered polished rod locating piece (16).
16. rod beam-pumping unit well head sealing apparatus as claimed in claim 15, it is characterised in that: described closing well unit include successively from the bottom to top closing well packing (19), two and half tapered polished rod locating pieces (16), with closing well packing pressure ring (15) of sealing ring (38) and closing well packing pressure ring lower seal (40), non-return oil collecting ring (14) and closing well unit base (18) on closing well packing pressure ring.
17. rod beam-pumping unit well head sealing apparatus as claimed in claim 16, it is characterised in that: during closing well, two and half tapered polished rod locating pieces (16) are by placed in the middle by force for polished rod (7) and locking；During normal operation, two and half tapered polished rod locating pieces (16) are automatically left polished rod (7) and are not worn.
18. rod beam-pumping unit well head sealing apparatus as claimed in claim 8, it is characterized in that: this well mouth sealing device is provided with lubrication unit, for providing kollag (35) and fluid lubricant between polished rod (7) and packing (9).
19. rod beam-pumping unit well head sealing apparatus as claimed in claim 18, it is characterized in that: described lubrication unit includes solid lubrication device, described solid lubrication device is arranged between packing (9) and well mouth sealing device top, makes kollag (35) light press polish bar (7) all the time by pressure apparatus.
20. rod beam-pumping unit well head sealing apparatus as claimed in claim 18, it is characterised in that: described lubrication unit includes the non-return oil collecting ring (14) that may be provided at optional position between well head and packing box.
21. rod beam-pumping unit well head sealing apparatus as claimed in claim 20, it is characterised in that: described non-return oil collecting ring (14) constantly can will play the effect of lubrication in crude storage above it cavity.
22. rod beam-pumping unit well head sealing apparatus as claimed in claim 8, it is characterized in that: the packing (9) of described packing box, can constantly follow polished rod (7) motion, thus realizing packing (9) and polished rod (7) dynamic coaxial.
23. rod beam-pumping unit well head sealing apparatus as claimed in claim 22, it is characterized in that: described packing box is: packing (9) is put into packing outer sleeve (8), packing pressure ring (5) is inserted packing outer sleeve (8), successively by (4) under oscillating bearing, on oscillating bearing (3), pressure bearing (2), packing box pressing cap (1) is enclosed within packing pressure ring (5), packing box pressing cap (1) is connected with closing well device pressure cap (13) by screw thread, do not contact between packing outer sleeve (8) with packing box pressing cap (1) and have laterally movable space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620018396.7U CN205349277U (en) | 2016-01-08 | 2016-01-08 | There is pole beam -pumping unit well head sealing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620018396.7U CN205349277U (en) | 2016-01-08 | 2016-01-08 | There is pole beam -pumping unit well head sealing device |
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| CN205349277U true CN205349277U (en) | 2016-06-29 |
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| CN201620018396.7U Active CN205349277U (en) | 2016-01-08 | 2016-01-08 | There is pole beam -pumping unit well head sealing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106639958A (en) * | 2017-01-10 | 2017-05-10 | 克拉玛依胜利高原机械有限公司 | Pithead steam injection anti-leakage sealing device |
| WO2017117837A1 (en) * | 2016-01-08 | 2017-07-13 | 于立成 | Wellhead sealing device of sucker-rod pumping machine |
| CN109488246A (en) * | 2017-09-12 | 2019-03-19 | 中国石油天然气股份有限公司 | Pumping unit blowout preventer and pumping unit |
| CN112746825A (en) * | 2021-01-29 | 2021-05-04 | 中国石油化工股份有限公司 | Well head environment-friendly device |
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2016
- 2016-01-08 CN CN201620018396.7U patent/CN205349277U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017117837A1 (en) * | 2016-01-08 | 2017-07-13 | 于立成 | Wellhead sealing device of sucker-rod pumping machine |
| CN106958430A (en) * | 2016-01-08 | 2017-07-18 | 于立成 | Rod beam-pumping unit well head sealing apparatus |
| CN106958430B (en) * | 2016-01-08 | 2019-10-18 | 于立成 | Rod beam-pumping unit well head sealing apparatus |
| US10760367B2 (en) | 2016-01-08 | 2020-09-01 | Licheng Yu | Wellhead sealing device of sucker-rod pumping machine |
| US11261687B2 (en) | 2016-01-08 | 2022-03-01 | Licheng Yu | Wellhead sealing device of sucker-rod pumping machine |
| CN106639958A (en) * | 2017-01-10 | 2017-05-10 | 克拉玛依胜利高原机械有限公司 | Pithead steam injection anti-leakage sealing device |
| CN109488246A (en) * | 2017-09-12 | 2019-03-19 | 中国石油天然气股份有限公司 | Pumping unit blowout preventer and pumping unit |
| CN109488246B (en) * | 2017-09-12 | 2023-09-26 | 中国石油天然气股份有限公司 | Blowout preventer of pumping unit and pumping unit |
| CN112746825A (en) * | 2021-01-29 | 2021-05-04 | 中国石油化工股份有限公司 | Well head environment-friendly device |
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