CN201144659Y - Polished rod sealing device for rod oil pumping - Google Patents
Polished rod sealing device for rod oil pumping Download PDFInfo
- Publication number
- CN201144659Y CN201144659Y CNU2007201573167U CN200720157316U CN201144659Y CN 201144659 Y CN201144659 Y CN 201144659Y CN U2007201573167 U CNU2007201573167 U CN U2007201573167U CN 200720157316 U CN200720157316 U CN 200720157316U CN 201144659 Y CN201144659 Y CN 201144659Y
- Authority
- CN
- China
- Prior art keywords
- packing
- box
- gland
- sealing
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to a rod-oil-production polished-rod sealer which consists of four parts from the top to the bottom including a packing box, a sealing box, a blowout control mechanism, and an angle deflection adjusting mechanism. A polished rod passes through the whole equipment and realizes the connection with a well head through a collar clamp. The sealing is an axisymmetric structure, and the main structure is shaped like a cylinder or a barrel; and all mechanisms are connected by threads or bolts. The sealer uses an ordinary transmission V belt as a sealing packing. In the structure, the packing box and the angle deflection adjusting mechanism are added; and the other end of the packing wound and placed in the packing box is wound in the sealing cavity of the sealing box without disconnection. The sealer can install and detach the packing conveniently and can replace the packing without stopping the oil production. The blowout control mechanism arranged in the sealer has a simple structure and can be operated conveniently to play the roles of the sealing and blowout control. The sealer also can eliminate the eccentric wear by adjusting the angle deflection.
Description
Technical field
The utility model relates to the sealing device of production wellhead in a kind of petroleum industry, be applicable to the wellhead polish rod sealing in the bar oil production equipment, especially can realize oil pumper do not stop production add packing, sealing device the angle tuningout tiltedly and the polish rod seal device of blowout prevention function.
Technical background
Along with the continuous development of recovering the oil in China oil field, the most of oil field of China has entered the mechanical oil recovery phase at present, and used capital equipment is a sucker rod pumping equipment in mechanical oil recovery.For sucker rod pumping equipment, the quality of wellhead polish rod sealing device performance directly has influence on the efficient and the output of oil pumper.The packing of the conventional polish rod seal device that generally adopt in current oil field is to rely on the gland axial compression to realize its sealing function, by regulating screw mandrel two semicircle sealing rings are snapped on the polished rod, control blowout, design adjusting deviation device simultaneously, realize a certain amount of tuningout on the horizontal direction.But in use find to have following defective: the shape of sealing ring and material are selected for use unreasonable, and be anti-extrusion, antiwear property is relatively poor, and sealing effectiveness is not satisfactory; Sealing ring installation and removal are inconvenient, when changing sealing ring, must stop well, unload whole production tree, thus rate when having reduced the oil extraction operation of pumping unit; Tuningout transfers oblique mechanism can not realize that the angle tuningout is oblique, and the crash rate of sealing ring is still higher; Prevent spraying mechanism or though anti-spraying mechanism is arranged, mechanism's complexity, troublesome poeration.
Summary of the invention
In order to overcome the deficiency of existing well mouth sealing device, the purpose of this utility model is that a kind of novel bar oil recovery polish rod seal device that has will be provided, and the sealing device adopts new encapsulant as sealed packing; Design brand-new hermetically-sealed construction, improve the service behaviour of sealing device; The installation and removal of sealing ring are convenient; Realize the oil pumper replacing packing that do not stop production; The angle tuningout of realizing sealing device is oblique, eliminates eccentric wear; Also design has anti-spraying mechanism simple in structure to realize sealing and blowout prevention function.
The technical scheme that its technical problem that solves the utility model adopts is:
The sealing device is connected and composed by packing box, seal box, anti-spraying mechanism, the oblique mechanism of angle tuningout from top to bottom successively.
Packing box is used for storing packing, for seal box provides packing.Packing box mainly comprises box body, lid, axis of rotation and four parts of rolling bearing.Box body is a cylindrical shape, is used for storing packing; Lid is connected with box body with screw thread, airtight box body, and the protection packing also stops external impurities; Rotary sleeve and connects with box body by rolling bearing on polished rod, and packing twines around the axis of rotation delamination helix; When rolling bearing is used for reducing axis of rotation and rotates and the friction between the box body.The adjacent seal box of whole packing box mechanism, the box body lower end has the groove of annular, packing in the packing box enters seal box by this groove, directly is wrapped in the annular seal space of seal box, is used for sealing, packing and the sealed packing in the seal box in hence one can see that the packing box are same packing, middle uninterrupted, therefore when changing packing, directly remove the old sealed packing of experience wear, extract new packing then from packing box out, being wrapped in the annular seal space is replaceable packing.And needn't adopt the mode of routine replacement sealing ring, and must the whole production tree of unloading, be inserted in new packing from polished rod.Can realize that thus not stopping production of oil pumper adds packing, rate when having improved oil extraction operation.
Seal box is the main body of whole sealing device, is used for realizing sealing function.Seal box overlaps several parts at the bottom of mainly comprising gland, upper strata handle, body, last gland and packing.Gland links together packing box and seal box by screw thread; The upper strata handle connects with gland by bolt, and rotation upper strata handle can be regulated the screw thread between gland and the body; Body is cylindrical, and the design of place, axle center, top has columniform annular seal space, and place, axle center, bottom is provided with cylindrical cavity, and the cavity inscribe has internal thread, and by screw thread, the body upper end connects packing box, and the lower end connects anti-spraying mechanism; Last gland is designed to cylindrical shape, insert in the annular seal space, hold and compress sealed packing in it by last gland, oil pressure in the well is blocked in the following wellhead assembly of seal box, realize the sealing of seal box, go up the interior top of chamber of gland in addition and have trapezoidal notch, by this notch the packing in the packing box is directly entered in the cavity of gland, and be spirally wound on the polished rod; Be enclosed within on the polished rod at the bottom of the packing, the bottom is a cylindrical shape, top is cut into spiralling tubular construction, and the end of tubular construction links together by the end of Screw and sealed packing, sealed packing can be spirally wound on the polished rod around polished rod rotating disc foundation cover; O-ring seals is used for realizing the sealing between gland and the annular seal space; After sealing device work a period of time, packing is impaired, only needs this moment rotation upper strata handle that the screw thread of gland is screwed certain angle, compresses sealed packing by last gland, can recover the sealability of seal box.When the sealed packing serious wear can not continue to use, only need to unscrew the gland screw thread by handle, open seal box, gland in the taking-up, promptly replaceable packing; By cover at the bottom of the packing novel sealing packing is spirally wound on the polished rod then, uses gland newer packing is inserted in the annular seal space, cover gland at last, screw the replacing that screw thread can be realized packing.The dismounting and the installation process that this shows packing are convenient, time saving and energy saving, can further improve oil recovery efficiency.
Anti-spraying mechanism is positioned at below the seal box, is used for realizing the blowout prevention function.Anti-spraying mechanism mainly comprises connector and following gland.Connector is cylindrical, and place, axle center, top is columniform blowout prevention annular seal space, and place, axle center, bottom is that the cavity of sphere, outer end, bottom are discoid flange, and the connector upper end is connected with seal box by screw thread, and the lower end is connected with the oblique mechanism of angle tuningout by bolt; Press down the sheathed cylindrical shape of counting, insert in the annular seal space, its underpart is placed with the blowout prevention sealing ring, by pressing down the tight seal of casing pressure, produces the power of axially holding tightly, realizes the sealing of mechanism; O-ring seals is used for realizing the sealing between body and the connector.During the sealing device operate as normal, the sealing ring in this mechanism is in the free state of " suspension " fully, and the friction between polished rod is very little.When changing packing at every turn or blowout occurring, only need rotation lower floor handle screw connecting thread, compress the blowout prevention sealing ring, realize sealing, the control blowout by following gland.
The oblique mechanism of angle tuningout is positioned at below the anti-spraying mechanism, is used for realizing that the angle tuningout of sealing device is oblique, eliminates eccentric wear.The main part of this mechanism is a base, and base top is the spheroidal structure, and the middle part is cylindrical, the outer end is discoid flange, and the base bottom is a shaft collar, and this structure is with reference to the well head type design, directly be connected by clip, thereby whole sealing device is installed on the well head with well head; O-ring seals is used for realizing the sealing between connector and the base.During oil pumper work, the polished rod center produces randomness and directionality beat to the well head center, for avoiding the sealed packing extrusion abrasion, design has the oblique mechanism of angle tuningout between anti-spraying mechanism and well head mechanism, base top in this mechanism contacts with connector bottom sphere, attachment bolt on the end flange also adopts spherical washer, therefore when polished rod and well head generation off-centre, by the bolt around adjusting, rely on this mechanism of lateral force of polished rod eccentric wear face to adjust voluntarily, polished rod pumps and just can reach the purpose of adjusting concentric several times voluntarily like this, thereby it is oblique to realize that sealing device carries out the angle tuningout within the specific limits, eliminate beat, avoid packing to be extruded wearing and tearing.
Select for use unreasonablely at the sealed packing shape in the conventional sealing device and material, cause the unfavorable problem of sealing effectiveness, a kind of replacing packing easily is badly in need of in the oil field simultaneously, and the utility model adopts the common drive V-belt of oil pumper as packing.The composite structure of this driving-belt makes it satisfy good springiness, intensity height, anti-aging, the requirement of length in application life; This packing forms multistage oil ring between multistage packing when work simultaneously, plays self-lubricating preferably and liquid self sealing action.In addition, this packing obtains on the oil field extremely easily, new and old classical V-belt all can, can further reduce cost for oil production.
Need to prove that in addition the encapsulant in the anti-spraying mechanism adopts conventional formula teflin ring, the sealing circle has good working performance, and its unique cross sectional shape, makes it have good radial compensation ability.
The beneficial effects of the utility model are, adopt novel encapsulant as sealed packing, have greatly improved the lubricant effect and the sealing effectiveness of sealing device; Sealed packing installation and removal can realize the oil pumper replacing packing that do not stop production simultaneously easily; The oblique mechanism of tuningout of design spherical contact realizes that the angle tuningout of sealing device is oblique, eliminates eccentric wear, prolongs sealed packing application life; The blowout prevention mechanism structure is simple, and is easy to operate, can realize sealing and blowout prevention function.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the outside drawing of the sealing device that proposes according to the utility model.
Fig. 2 is the structural representation that first embodiment of bar oil recovery polish rod seal device is arranged that proposes according to the utility model.
Fig. 3 is the structural representation that second embodiment of bar oil recovery polish rod seal device arranged that proposes according to the utility model.
1. bases among the figure, 2. bolt, 3. nut, 4. spherical washer, 5.O shape sealing ring, 6. body, 7. conventional sealing ring, 8. cover, 9. felt collar at the bottom of the packing, 10. sealed packing, gland on 11., 12.O shape sealing ring, 13. glands, 14. upper strata handle 15. deep groove ball bearings, 16. axis of rotation, 17. box bodys, 18. lids, 19. packing, 20. bolts, 21. bolts, 22. lower floor's handles, 23.O the shape sealing ring, 24. times glands, 25. blowout prevention sealing rings, 26. connectors.
The specific embodiment
In embodiment illustrated in fig. 2, among the packing box I, box body 17 is a cylindrical shape, and memory length is the packing about 3000mm, and packing can be selected common drive V-belt for use; The top of box body 17 and lid 18 are used for protecting packing and stop external impurities by being threaded togather, and the lower end of box body 17 has the groove of two annulars, and the packing among the packing box I passes this groove and enters annular seal space among the seal box II, seals; Axis of rotation 16 is the axle series structure, and middle hollow is connected with box body 17 by rolling bearing 15, and packing 19 twines around its delamination helix; When rolling bearing 15 is used for reducing axis of rotation 16 and rotates and the friction between the box body 17.
Among the seal box II, gland 13 is a cylindrical shape, and gland 13 links together packing box I and seal box II by internal thread; Upper strata handle 14 is linked together by the outer wall of bolt 20 with gland 13; Body 6 is cylindrical, material selection 45 steel, and place, axle center, top holds gland 11 and sealed packing 10 for columniform annular seal space in the chamber, and place, axle center, bottom is provided with cylindrical cavity, and the chamber inscribe has internal thread; Enter annular seal space, the packing that seals is sealed packing 10, and the packing in sealed packing and the packing box is a same packing, and is middle uninterrupted; Last gland 11 is a cylindrical shape, be positioned in the annular seal space, accommodate sealed packing 10 in it, go up gland 11 interior top of chamber in addition and have the antiparallelogram notch, by this notch the packing among the packing box II is directly entered in the inner chamber of gland 11, and be spirally wound on the polished rod; Overlapping 8 bottoms at the bottom of the packing is cylindrical shape, and top is spiralling tubular construction, and the end of tubular construction links together by the end of Screw and sealed packing 10, sealed packing 10 can be spirally wound on the polished rod around polished rod rotating disc foundation cover 8; Adopt O-ring seals 12 to realize sealing between the annular seal space of last gland 11 and body 6; Rotation upper strata handle 14 screws the screw thread between gland 13 and the body 6, can compress sealed packing 10 by last gland 11, produces radial load, the sealing of implement device.
Among the anti-spraying mechanism III, lower floor's handle 22 is linked together by the bottom of bolt 21 with body 6 outer walls; Connector 26 is cylindrical, place, axle center, top is columniform blowout prevention annular seal space, hold in the chamber and press down cover 24 and blowout prevention sealing ring 25, end-grain cutting has external screw thread outside the top, place, axle center, bottom is the cavity of sphere, the outer end, bottom is discoid flange, 12 screws of flange upper edge circumference disposed at equal distance, and the screw thread by the connector outer end links together seal box II and anti-spraying mechanism III; Following gland 24 is a cylindrical shape, is positioned in the annular seal space, and its underpart is placed with blowout prevention sealing ring 25; Blowout prevention sealing ring 25 is conventional formula teflin ring; Adopt O-ring seals 23 to realize sealing between body 6 and the connector 26; Rotation lower floor handle 22 screws the screw thread between body 6 and the connector 26, can compress blowout prevention sealing ring 25 by following gland 24, produces the power of radially holding tightly, realizes sealing, reaches the purpose of blowout prevention.
Among the oblique IV of mechanism of angle tuningout, the top of base 1 is the spheroidal structure, contacts with the bottom sphere of connector 26, and adopts O-ring seals 5 to realize sealing, allows certain angular deflection between the two; The middle part of base 1 is cylindrical, the outer end is discoid flange, 12 screws of flange upper edge circumference disposed at equal distance, the aperture is identical with the connector screwhole diameter, realize the connection of base and connector flange, thereby will prevent that spraying mechanism III and angle tuningout biassed fabric IV link together by bolt 2, nut 3; The bottom of base 1 is a shaft collar, and this structure directly is connected with well head by clip, thereby whole sealing device is installed on the well head with reference to the well head type design; Bolt 2 and nut 3 all adopt spherical washer 4, can produce certain deflection between the axial line of assurance bolt and nut and the axial line of connector and base.
Claims (3)
1. one kind has bar oil recovery polish rod seal device, by packing box, seal box, anti-spraying mechanism and the oblique mechanism of angle tuningout are linked in sequence, polished rod is through whole sealing device, with clip whole sealing device and well head are linked together, the sealing device is an axially symmetric structure, main member be shaped as cylindrical or cylindrical shape, it is characterized in that: packing box comprises box body, lid, axis of rotation and rolling bearing, be positioned at the topmost of sealing device, be used for storing packing, for seal box provides packing, the box body bottom of packing box has the groove of annular, packing in the box enters seal box by this groove, packing box and seal box is linked together by screw thread with gland; Seal box overlaps at the bottom of comprising gland, upper strata handle, body, last gland and packing, upper part of body has columniform annular seal space, holds gland and sealed packing, and tapped cylindrical cavity is arranged at the bottom, body connects packing box by threaded upper end, and the lower end connects anti-spraying mechanism; Top of chamber has the isosceles trapezoid notch in the last gland, and packing directly enters in the inner chamber of gland by this notch; The top of cover is spiralling tubular construction at the bottom of the packing, and the end of tubular construction links together by the end of Screw and sealed packing, and the sealed packing that rotating disc foundation cover can will be gone up in the gland cavity is spirally wound on the polished rod; Anti-spraying mechanism is positioned at below the seal box, comprises connector and following gland, and connector top is columniform blowout prevention annular seal space, and the chamber is built-in with down gland and blowout prevention sealing ring, and place, axle center, bottom is the cavity of ball face, and the outer end, bottom is discoid flange; The base top of the oblique mechanism of angle tuningout is the spheroidal structure, contact with connector bottom sphere, allow certain angular deflection, the outer end, middle part is discoid flange, realize the connection of base and connector flange by bolt and nut, thereby will prevent that spraying mechanism and the oblique mechanism of angle tuningout link together.
2. according to claim 1 have a bar oil recovery polish rod seal device, it is characterized in that: sealed packing adopts new and old classical V-belt all can, packing in the packing box is connected by the groove of its box body bottom packing direct and in the seal box cylindrical cavity, and the sealed packing in packing box and the seal box is same packing.
3. according to claim 1 have a bar oil recovery polish rod seal device, it is characterized in that: the attachment bolt on the end flange in the oblique mechanism of angle tuningout adopts spherical washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201573167U CN201144659Y (en) | 2007-11-16 | 2007-11-16 | Polished rod sealing device for rod oil pumping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201573167U CN201144659Y (en) | 2007-11-16 | 2007-11-16 | Polished rod sealing device for rod oil pumping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144659Y true CN201144659Y (en) | 2008-11-05 |
Family
ID=40081535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201573167U Expired - Fee Related CN201144659Y (en) | 2007-11-16 | 2007-11-16 | Polished rod sealing device for rod oil pumping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201144659Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086759A (en) * | 2009-12-02 | 2011-06-08 | 刘庆敏 | Oil well polished rod sealer |
| CN103161421A (en) * | 2013-03-18 | 2013-06-19 | 张学海 | Oil pumping polished rod lubrication sealing device |
| CN110056324A (en) * | 2018-01-19 | 2019-07-26 | 银川塞昊橡胶有限公司 | Rubber packing is used in a kind of sealing of novel oilfield mouth of pumped oil well |
| CN110470132A (en) * | 2019-07-23 | 2019-11-19 | 北京航天环境工程有限公司 | A kind of rotary kiln burner sealing device of high-air-tightness and application |
-
2007
- 2007-11-16 CN CNU2007201573167U patent/CN201144659Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086759A (en) * | 2009-12-02 | 2011-06-08 | 刘庆敏 | Oil well polished rod sealer |
| CN103161421A (en) * | 2013-03-18 | 2013-06-19 | 张学海 | Oil pumping polished rod lubrication sealing device |
| CN103161421B (en) * | 2013-03-18 | 2016-04-06 | 张学海 | Oil pumping polish rod lubricating and sealing device |
| CN110056324A (en) * | 2018-01-19 | 2019-07-26 | 银川塞昊橡胶有限公司 | Rubber packing is used in a kind of sealing of novel oilfield mouth of pumped oil well |
| CN110470132A (en) * | 2019-07-23 | 2019-11-19 | 北京航天环境工程有限公司 | A kind of rotary kiln burner sealing device of high-air-tightness and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201144659Y (en) | Polished rod sealing device for rod oil pumping | |
| CN109751402B (en) | Vehicle-mounted coalbed methane drill power head reduction gearbox | |
| CN214118139U (en) | Multi-stage pneumatic wellhead sealing device | |
| CN201129297Y (en) | Double screw rod electric submersible pump | |
| CN210217681U (en) | Blowout prevention control tool for oil pumping unit wellhead | |
| CN101158277B (en) | Multifunctional polish rod sealing device | |
| WO2009039739A1 (en) | Wellhead assembly | |
| CN202531086U (en) | Lubricated type pumping unit wellhead polish rod sealing packing box | |
| CN201416409Y (en) | Omnidirectional offset packing box | |
| CN211008538U (en) | Oil well energy storage formula well head packing box | |
| CN201209586Y (en) | Mechanical sealing device for high-pressure water filling pump | |
| CN202215182U (en) | Double-seal lubrication type self-sealing packer box | |
| CN216588524U (en) | Multifunctional wellhead leakage-proof sealing device | |
| CN216741432U (en) | CO2 drives oil recovery well head sucker rod sealing device | |
| CN201269063Y (en) | Multifunctional blowout-prevention packing kit for oil extraction well | |
| CN201731064U (en) | Fastening type seal ring | |
| CN212296287U (en) | Packing box | |
| CN209041555U (en) | A kind of permanent magnet direct-driven mechanical seal driving device | |
| CN201723164U (en) | Bound sealing ring | |
| CN206608545U (en) | One kind can limit pretightning force and easy-disassembling-assembling packing seal structure | |
| CN202767935U (en) | Automatic blowout-prevention deviation-adjusting packer | |
| CN2908757Y (en) | Drive shafe device for screw drilling tool | |
| CN2576956Y (en) | Offsetting anti-theft radial polish rod sealing device | |
| CN111425161A (en) | Packing box | |
| CN2337311Y (en) | Multi-function well head blow-out preventing box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20091216 |