CN106014320A - Follow-up type structure of wellhead sealer - Google Patents
Follow-up type structure of wellhead sealer Download PDFInfo
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- CN106014320A CN106014320A CN201610553436.2A CN201610553436A CN106014320A CN 106014320 A CN106014320 A CN 106014320A CN 201610553436 A CN201610553436 A CN 201610553436A CN 106014320 A CN106014320 A CN 106014320A
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- polished rod
- packing box
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- 238000007789 sealing Methods 0.000 claims abstract description 108
- 238000012856 packing Methods 0.000 claims abstract description 86
- 239000003921 oil Substances 0.000 claims abstract description 27
- 239000010687 lubricating oil Substances 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- 241000168254 Siro Species 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 6
- 238000013519 translation Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005461 lubrication Methods 0.000 abstract description 12
- 239000010865 sewage Substances 0.000 abstract description 9
- 239000004576 sand Substances 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000008393 encapsulating agent Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009469 supplementation Effects 0.000 description 2
- 206010017389 Frotteurism Diseases 0.000 description 1
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The invention provides a follow-up type structure of a wellhead sealer and belongs to the technical field of oil field machinery. The follow-up type structure of the wellhead sealer comprises a sealing cover, a sealing outer shell, an upper follow-up platform, a follow-up packing box, a lower follow-up platform, a sealing base, a protective cover and a connecting piece, wherein the follow-up packing box is in close contact with a polished rod and completes parallel translation in any direction in the horizontal plane by virtue of the upper follow-up platform and the lower follow-up platform; the protective cover is arranged above the sealing cover and is in close contact with the polished rod, freely translates in the horizontal plane along with the polished rod and adopts an umbrella-type structure, so that rainwater, sewage or sand is effectively prevented from entering; and a ring cavity composed of a retaining ring of the sealing cover and the sealing outer shell is filled with lubricating oil, so that continuous lubrication and oil seal are provided for the upper follow-up platform and the lower follow-up platform. The follow-up type structure of the wellhead sealer is simple, low in cost, convenient to mount and maintain and good in lubrication and seal, and eccentric wear of the polished rod can be effectively prevented, so that the service lives of the packing box and the polished rod are greatly prolonged, and the energy-saving effect can be realized.
Description
Technical field
The present invention relates to the packing box that oil pumping machine well head seals, the trailing type structure of a kind of wellhead sealing device, belong to oilfield machinery technical field.
Background technology
In the production process of oil-field oil pumper, packing box is to a kind of sealing device sealed between well head and polished rod.Yet with recovering the oil, scene oil pumping hole condition is complicated, usually makes oil-extractor polish-rod mill partially, and then shortens the service life of packing box.When there is the phenomenon such as scuffing, corrosion on polished rod surface, more accelerates the abrasion of packing box, thus cause oil well to run oil, cause leakage of oil, leakage vapour, pollute environment.
The function of tradition polish rod sealing is, polished rod is implemented " locking " seals by compressing wear resistant packing, prevent the band force feed in oil well, gas and water from emerging with the reciprocating motion of polished rod well head.This problem existed that seals is mainly manifested in the following aspects: (1) causes Heavy environmental pollution: " locking " seals and necessarily cause packing_seal circle to wear and tear, the oil field gas atmosphere pollution that abrasion gap leakage goes out；After may wear to a certain degree, crude oil and high salinity surface water will leak ground, cause the severe contamination of ground surface environment.(2) labor strength is big: oil recovery workman must make an inspection tour well site every day, tightens packing gland, and within every 2 weeks, must stop production and change new packing, and these two ongoing operations are huge burden for workman, especially oil field, the north in winter.(3) energy consumption is increased: polished rod is in the state held tightly by packing all the time, adds the resistance of motion, thus adds the energy consumption of oil pumper.(4) damaging polished rod: polished rod is in the Frotteurism held tightly by packing all the time, and frictional dissipation makes polished rod from the coarse to fine, and fatigue stress makes to crack inside polished rod, dual function substantially reduces polished rod service life.(5) sucker rod partial wear is easily caused: be in rigidity oppression state all the time due to polished rod, when its motion departs from oil well axis, following sucker rod deviation oil well axis will be driven to move, cause sucker rod partial wear, thus increase oil pumper power consumption, and easily cause disconnected bar accident, make oil well be forced to stop production.
As can be seen from the above analysis, oil pumper equipment not only itself is threatened by well mouth sealing device, and also environment and personal safety to surrounding cause serious threat.Therefore, for the reason of generation the problems referred to above, well mouth sealing device it is optimized and improves, becoming problem in the urgent need to address.
The research being at present correlated with the structure of well mouth sealing device and technology, but actual effect is not ideal enough, translation, servo-actuated, eccentric wear, seal or the aspect such as lubrication is still the key issue that solution is presently required.In order to solve the offset problem of polished rod, it is thus proposed that utilization multi-directional ball is adjusted, but multi-directional ball is merely able to adjust the inclination of polished rod, it is impossible to adjust the translation problem of polished rod, and polished rod translation is problem common in actual application；Also someone devises the packing box that can carry out manually adjusting polished rod skew, but it can not make, and packing box is servo-actuated along with the skew of polished rod to be offset.When polished rod occurs translation, can cause the infiltration of rainwater, sewage or sand and dust, this not only can make the abrasion of polished rod and packing box strengthen, and polished rod and packing box can be caused corrosion, has a strong impact on its service life.In order to solve polished rod eccentric wear problem, someone devises moveable packing box to hold polished rod tightly, but packing box is held tightly, and the state of polished rod makes their frictional force increase, the energy consumption of oil pumper increases the most accordingly.Lubrication property, in the structure of modification of wellhead sealing device, fails effectively to be applied so far.Therefore, for wellhead sealing device servo-actuated, seal and the aspect such as life-span, it is still necessary to the configuration aspects of well mouth sealing device is further improved.
By to background information analysis it can be seen that the trackability of wellhead sealing device is poor, eccentric wear is serious, seal the aspects such as poor, energy consumption height, life-span short, resistance to pressure reduction is problem in the urgent need to address, should also be and carry out, for its structure, the emphasis direction studying and solve.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, with low cost, convenient for installation and maintenance, eccentric abrasion prevention, good seal, the trailing type structure of wellhead sealing device of energy-conservation, life-span length.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of trailing type structure of wellhead sealing device, including sealing lid (1), sealing shell (2), upper compliant platform (3), servo-actuated packing box (4), lower compliant platform (5), sealing base (6), and all there is circular hole at middle part, polished rod (7) passes from circular hole, and can move up and down along the passage that circular hole in the middle part of above-mentioned each assembly is constituted.
Seal lid (1) and seal shell (2) top compact siro spinning technology, apart from adjustable, sealing between lid (1) and servo-actuated packing box (4) is upper compliant platform (3), it is lower compliant platform (5) between servo-actuated packing box (4) and sealing base (6), sealing base (6) and sealing shell (2) bottom compact siro spinning technology；Seal lid (1) with seal between shell (2) up and down apart from adjustable, in order to adjustment is to internal each parts, especially to upper compliant platform (3), servo-actuated packing box (4) and the compression degree of lower compliant platform (5).
Servo-actuated packing box (4) is in close contact with polished rod (7) by the packing at circular hole in the middle part of it, when polished rod (7) the most servo-actuated packing box (4) up and down motion work, play the effect that polished rod (7) is sealed, simultaneously, servo-actuated packing box (4) and polished rod (7) are geo-stationary in the horizontal direction, when polished rod (7) occurs eccentric, driving servo-actuated packing box (4), in support, compliant platform (3) and lower compliant platform (5) carry out horizontal plane, any direction moves in parallel.
The external diameter of servo-actuated packing box (4) is less than the internal diameter sealing shell (3), middle composition annular chamber (8), seal the internal diameter of middle part circular hole of lid (1) and sealing base (6) more than the external diameter of polished rod (7), thus move in parallel to any direction in the common horizontal plane of servo-actuated packing box (4) and polished rod (7) and provide space.
The present invention does not has special definition and requirement to the internal structure of servo-actuated packing box (4), although different packing box internal structures is different, but all it is dependent on internal packing and holds polished rod (7) tightly, while ensureing that polished rod (7) freely up and down moves, play the sealing function to polished rod (7).Therefore, as long as external structure meets the packing box of application claims, all can be as the servo-actuated packing box (4) in the present invention.
Seal the difference of the internal diameter of shell (2) and the external diameter of servo-actuated packing box (4), less than the difference of the external diameter of the internal diameter with polished rod (7) sealing the middle part circular hole covering (1) and sealing base (6).This structure can ensure when polished rod (7) occurs extreme eccentric situation, servo-actuated packing box (4) first touches the inner side sealing shell (2), translation cannot be produced further, polished rod (7) now will not come in contact with sealing circular hole in the middle part of lid (1) and sealing base (6), i.e. polished rod (7) will not be caused abrasion, also it is not result in, due to this fricative additional energy, also acting as energy-conserving action simultaneously.
Upper compliant platform (3) is fixed on sealing lid (1) or servo-actuated packing box (4), during to avoid translating, displacement occurs, and loses support, seals and lubrication.When being fixed on sealing lid (1) and being upper, upper compliant platform (3) is exactly static, servo-actuated packing box (4) its translation gliding relatively；When being fixed on servo-actuated packing box (4) and being upper, upper compliant platform (3) moves along with servo-actuated packing box (4) joint translation, and seals relative translation slip between lid (1).Certainly, upper compliant platform (3) is if include more than 1 assembly, and multiple assemblies can also be separately fixed on sealing lid (1) and servo-actuated packing box (4), as long as can guarantee that the normal translational motion of servo-actuated packing box (4).
Lower compliant platform (5) is fixed on sealing base (6) or servo-actuated packing box (4), identical with the situation of upper compliant platform (3).
Upper compliant platform (3) and lower compliant platform (5) can use corrosion resistant, have resilient annular packing material and constitute, act primarily as support, seal, reduce the effect of translational friction.Use resilient annular seal material, when adjusting the distance up and down sealed between lid (1) and sealing shell (2), it can be produced different pressure, thus cause different deformation, thus adjust seal degree and the size of translation frictional force.
Protection cap (9), is positioned at sealing lid (2) top, is in close contact with polished rod (7) by the circular hole in the middle part of it, and in carrying out horizontal plane with polished rod (7), any direction moves in parallel.Encapsulant can be used between protection cap (9) and polished rod (7), prevent rainwater or sewage from penetrating into, and can effectively prevent sand and dust from entering, it is to avoid sand and dust aggravate servo-actuated packing box (4) and the abrasion of polished rod (7).In can carrying out horizontal plane along with polished rod (7) due to protection cap (9), any direction moves in parallel, and when polished rod (7) occurs eccentric, eccentric wear will not occur.
Protection cap (9) is beveled structure, it is simple to rainwater or sewage are along the landing of beveled structure face.
Protection cap (9) bottom is connected for magnetic between lid (1) upper surface with sealing; can use and be partially submerged into Magnet realize at this; then protection cap (9) is attracted by the magnetic force and is sealing lid (1) upper surface; while not affecting protection cap (9) translational motion, it is unlikely to by polished rod (7) with moving up and down.
There is composition annular chamber (11) between retaining ring (10), and polished rod (7) on the top sealing lid (1), with oil refill.Then lubricating oil uniform and stable can provide lubrication for the packing in servo-actuated packing box (4) along with the up and down motion of polished rod (7), reduces abrasion, saves energy, raising service life；Meanwhile, along with the translational motion of servo-actuated packing box (4), uniform and stable provides lubrication for upper compliant platform (3), reduces eccentric wear, enhancing sealability, improves service life.
Annular chamber (11) herein, moreover it is possible to upper compliant platform (3) and polished rod (7) are played the effect of oil sealing, further enhances sealing effectiveness, prevent well head leakage of oil.
Additionally, the upper surface that retaining ring (10) can also effectively stop rainwater or sewage end count capping (1) enters annular chamber (11), it is to avoid corrode or affect lubricant effect.
There is tank filler sleeve (12) sealing on shell (2), close during normal work, when requiring supplementation with lubricating oil, in annular chamber (8), inject lubricating oil through tank filler sleeve (12).Along with the translational motion of servo-actuated packing box (4), uniform and stable provides lubrication for lower compliant platform (5), reduces eccentric wear, enhancing sealability, improves service life.
Annular chamber (8) herein, moreover it is possible to lower compliant platform (5) is played the effect of oil sealing, further enhances sealing effectiveness, prevent well head leakage of oil.
Connector (13) is arranged at the bottom of sealing base (6), can make screw thread, flange or thimble connector mode, be joined directly together with other wellhead assembly or well head.
Compared with prior art, present invention have the advantage that
Present configuration is simple, with low cost, convenient for installation and maintenance, servo-actuated packing box is used to rely on upper compliant platform and lower compliant platform to realize, along with polished rod, the structure that any direction in horizontal plane moves freely, and each radial dimension of matching design of parts, effectively solve eccentric wear problem, and can ensure polished rod seal effect, substantially increase the service life of packing box and polished rod, and energy-saving effect can be played.Protection cap translates along with polished rod, and uses beveled structure, effectively prevents rainwater, sewage or sand and dust from entering, substantially improves the working environment of servo-actuated packing box, extend service life, it is ensured that lubricant effect.Utilize and seal at lid retaining ring and seal the annular chamber constituted at shell with oil refill, can respectively go up compliant platform, lower compliant platform, and polished rod or even packing provide continuous lubrication and oil sealing, reduce radial and axial friction, simultaneously work as energy-conservation, seal, the multiple action such as increase the service life.
Accompanying drawing explanation
Fig. 1: overall sectional structure chart.
Fig. 2: maximum eccentric translation sectional structure chart.
In figure: 1 seal lid, 2 seal shells, compliant platform, 4 servo-actuated packing boxs, 5 times compliant platforms, 6 sealing bases, 7 polished rods, 8 annular chambers, 9 protection caps, 10 retaining rings, 11 annular chambers, 12 tank filler sleeves, 13 connectors on 3.
Detailed description of the invention
The present invention is further detailed explanation below in conjunction with the accompanying drawings:
Such as Fig. 1, overall sectional structure chart by sealing lid (1), sealing shell (2), upper compliant platform (3), servo-actuated packing box (4), lower compliant platform (5), sealing base (6), polished rod (7), annular chamber (8), protection cap (9), retaining ring (10), annular chamber (11), tank filler sleeve (12), connector (13) are constituted.
Seal and all have circular hole in the middle part of lid (1), sealing shell (2), upper compliant platform (3), servo-actuated packing box (4), lower compliant platform (5), sealing base (6), polished rod (7) passes from circular hole, and can move up and down along the passage that circular hole in the middle part of above-mentioned each assembly is constituted.
Seal lid (1) and seal shell (2) top compact siro spinning technology, apart from adjustable, sealing between lid (1) and servo-actuated packing box (4) is upper compliant platform (3), it is lower compliant platform (5) between servo-actuated packing box (4) and sealing base (6), sealing base (6) and sealing shell (2) bottom compact siro spinning technology；Seal lid (1) with seal between shell (2) up and down apart from adjustable, in order to adjustment is to internal each parts, especially to upper compliant platform (3), servo-actuated packing box (4) and the compression degree of lower compliant platform (5).
Servo-actuated packing box (4) is in close contact with polished rod (7) by the packing at circular hole in the middle part of it, when polished rod (7) the most servo-actuated packing box (4) up and down motion work, play the effect that polished rod (7) is sealed, simultaneously, servo-actuated packing box (4) and polished rod (7) are geo-stationary in the horizontal direction, when polished rod (7) occurs eccentric, driving servo-actuated packing box (4), in support, compliant platform (3) and lower compliant platform (5) carry out horizontal plane, any direction moves in parallel.
The external diameter of servo-actuated packing box (4) is less than the internal diameter sealing shell (3), middle composition annular chamber (8), seal the internal diameter of middle part circular hole of lid (1) and sealing base (6) more than the external diameter of polished rod (7), thus move in parallel to any direction in the common horizontal plane of servo-actuated packing box (4) and polished rod (7) and provide space.
Upper compliant platform (3) is fixed on sealing lid (1) or servo-actuated packing box (4), and lower compliant platform (5) is fixed on sealing base (6) or servo-actuated packing box (4), during to avoid translating, displacement occurs.
Protection cap (9) is positioned at sealing lid (2) top, is in close contact with polished rod (7) by the circular hole in the middle part of it, and in can carrying out horizontal plane with polished rod (7), any direction moves in parallel.Use encapsulant between protection cap (9) and polished rod (7), prevent rainwater or sewage from penetrating into, and can effectively prevent sand and dust from entering, it is to avoid sand and dust aggravate servo-actuated packing box (4) and the abrasion of polished rod (7).And protection cap (9) is beveled structure, it is simple to rainwater or sewage are along the landing of beveled structure face.
Seal and between top retaining ring (10) and the polished rod (7) of lid (1), constitute annular chamber (11), with oil refill.Retaining ring (10) can effectively stop that the upper surface of rainwater or sewage end count capping (1) enters annular chamber (11).Lubricating oil can be along with the up and down motion of polished rod (7), and uniform and stable provides lubrication for the packing in servo-actuated packing box (4)；Meanwhile, along with the translational motion of servo-actuated packing box (4), uniform and stable provides lubrication for upper compliant platform (3).Upper compliant platform (3) and polished rod (7) can also be played the effect of oil sealing by annular chamber (11), further enhance sealing effectiveness, prevent well head leakage of oil.
There is tank filler sleeve (12) sealing on shell (2), close during normal work, when requiring supplementation with lubricating oil, in annular chamber (8), inject lubricating oil through tank filler sleeve (12).Along with the translational motion of servo-actuated packing box (4), uniform and stable provides lubrication for lower compliant platform (5), lower compliant platform (5) can also play the effect of oil sealing simultaneously.
Connector (13) is arranged at the bottom of sealing base (6), can make screw thread, flange or thimble connector mode, be joined directly together with other wellhead assembly or well head.
When polished rod (7) occurs eccentric situation, such as Fig. 2, sealing lid (1), sealing shell (2), sealing base (6), retaining ring (10), tank filler sleeve (12), connector (13) are in fixing state all the time；And compliant platform (3) and lower compliant platform (5) are along with the most eccentric translation together with polished rod (7) in servo-actuated packing box (4) support; protection cap (9) is attracted by the magnetic force and is sealing lid (1) upper surface; also with polished rod (7) together the most eccentric translation; also ensure that when polished rod (7) moves up and down simultaneously, with servo-actuated packing box (4) and protection cap (9), eccentric wear will not occur.
It is additionally, since in the present invention difference of the internal diameter sealing shell (2) and the external diameter of servo-actuated packing box (4), less than the difference of the external diameter of the internal diameter with polished rod (7) sealing the middle part circular hole covering (1) and sealing base (6).Therefore, even there is the situation of extreme maximum eccentric, also it is that servo-actuated packing box (4) first touches the inner side sealing shell (2), thus stop polished rod (7) to produce translation further, then polished rod (7) will not come in contact with sealing circular hole in the middle part of lid (1) and sealing base (6), i.e. polished rod (7) will not be caused abrasion, also be not result in, due to this fricative additional energy, also acting as energy-conserving action simultaneously.
The foregoing is only the preferable embodiment of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. the trailing type structure of a wellhead sealing device, it is characterized in that: include sealing lid (1), sealing shell (2), upper compliant platform (3), servo-actuated packing box (4), lower compliant platform (5), sealing base (6), and middle part all has circular hole, polished rod (7) to pass from circular hole；
Seal lid (1) and seal shell (2) top compact siro spinning technology, apart from adjustable, sealing between lid (1) and servo-actuated packing box (4) is upper compliant platform (3), it is lower compliant platform (5) between servo-actuated packing box (4) and sealing base (6), sealing base (6) and sealing shell (2) bottom compact siro spinning technology；
Servo-actuated packing box (4) is in close contact with polished rod (7) by the packing at circular hole in the middle part of it, and in support, compliant platform (3) and lower compliant platform (5) carry out horizontal plane, any direction moves in parallel；
The external diameter of servo-actuated packing box (4) is less than the internal diameter of sealing shell (3), and middle composition annular chamber (8), the internal diameter of the middle part circular hole sealing lid (1) and sealing base (6) is more than the external diameter of polished rod (7).
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterized in that: seal the difference of the internal diameter of shell (2) and the external diameter of servo-actuated packing box (4), less than the difference of the external diameter of the internal diameter with polished rod (7) sealing the middle part circular hole covering (1) and sealing base (6).
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterized in that: upper compliant platform (3) is fixed on sealing lid (1) or servo-actuated packing box (4), and lower compliant platform (5) is fixed on close sealing base (6) or servo-actuated packing box (4).
The trailing type structure of a kind of wellhead sealing device the most according to claim 1; it is characterized in that: include protection cap (9); being positioned at sealing lid (2) top, be in close contact with polished rod (7) by the circular hole in the middle part of it, in carrying out horizontal plane with polished rod (7), any direction moves in parallel.
The trailing type structure of a kind of wellhead sealing device the most according to claim 4, it is characterised in that: protection cap (9) is beveled structure.
The trailing type structure of a kind of wellhead sealing device the most according to claim 4, it is characterised in that: protection cap (9) bottom is connected for magnetic between lid (1) upper surface with sealing.
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: there is composition annular chamber (11) between retaining ring (10), and polished rod (7) on the top sealing lid (1), with oil refill.
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: there is tank filler sleeve (12) sealing on shell (2), in annular chamber (8), inject lubricating oil through tank filler sleeve (12).
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: connector (13) is arranged at the bottom of sealing base (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610553436.2A CN106014320A (en) | 2016-07-14 | 2016-07-14 | Follow-up type structure of wellhead sealer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610553436.2A CN106014320A (en) | 2016-07-14 | 2016-07-14 | Follow-up type structure of wellhead sealer |
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| CN106014320A true CN106014320A (en) | 2016-10-12 |
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| CN201610553436.2A Pending CN106014320A (en) | 2016-07-14 | 2016-07-14 | Follow-up type structure of wellhead sealer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524420A (en) * | 2017-09-05 | 2017-12-29 | 青岛理工大学 | Follow-up centering two-stage has lever system sealing device |
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| CN101956539A (en) * | 2009-07-16 | 2011-01-26 | 南通市中庆机械厂 | Follow-up centering sealing device of pumping well head |
| CN202325357U (en) * | 2011-11-24 | 2012-07-11 | 上海大学 | Multifunctional pumping wellhead sealing device |
| CN204386540U (en) * | 2014-12-04 | 2015-06-10 | 李骥 | The servo-actuated dynamic sealing device of a kind of Novel wellhead |
| CN205743810U (en) * | 2016-07-14 | 2016-11-30 | 哈尔滨理工大学 | A kind of trailing type structure of wellhead sealing device |
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- 2016-07-14 CN CN201610553436.2A patent/CN106014320A/en active Pending
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| EP1104517B1 (en) * | 1998-08-21 | 2006-10-18 | The Advanced Products Company | Spring compression seal |
| CN2575291Y (en) * | 2002-09-17 | 2003-09-24 | 石油大学(华东) | Drilling well plugging leaks analog experiment apparatus |
| CN101956539A (en) * | 2009-07-16 | 2011-01-26 | 南通市中庆机械厂 | Follow-up centering sealing device of pumping well head |
| CN202325357U (en) * | 2011-11-24 | 2012-07-11 | 上海大学 | Multifunctional pumping wellhead sealing device |
| CN204386540U (en) * | 2014-12-04 | 2015-06-10 | 李骥 | The servo-actuated dynamic sealing device of a kind of Novel wellhead |
| CN205743810U (en) * | 2016-07-14 | 2016-11-30 | 哈尔滨理工大学 | A kind of trailing type structure of wellhead sealing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524420A (en) * | 2017-09-05 | 2017-12-29 | 青岛理工大学 | Follow-up centering two-stage has lever system sealing device |
| CN107524420B (en) * | 2017-09-05 | 2019-04-30 | 青岛理工大学 | Follow-up centering two-stage has lever system sealing device |
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Application publication date: 20161012 |