CN209195332U - Polished rod seal blowout prevention box - Google Patents
Polished rod seal blowout prevention box Download PDFInfo
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- CN209195332U CN209195332U CN201821527245.XU CN201821527245U CN209195332U CN 209195332 U CN209195332 U CN 209195332U CN 201821527245 U CN201821527245 U CN 201821527245U CN 209195332 U CN209195332 U CN 209195332U
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Abstract
The utility model discloses a kind of polished rod seal blowout prevention boxes, belong to polished rod seal technical field.The polished rod seal blowout prevention box includes: regulating device, positioning device and packing box, and regulating device includes pedestal, support base, universal ball end and the first locking nut.In the utility model, after polished rod sequentially passes through pedestal, support base, universal ball end, the first locking nut, positioning device and packing box from the bottom to top, first packing is set in packing box, and be fixedly connected with the top of positioning device, to adjust the distance between center line and the center line of polished rod of the first packing by positioning device.Later, universal ball end, positioning device and packing box is fixed as an entirety, rotation universal ball end is overlapped with the center line for guaranteeing universal ball end with the center line of polished rod, and then the first locking nut is fixedly connected with pedestal again, to be limited to universal ball end and support base, to guarantee that the center line of the first packing is overlapped with the center line of polished rod, avoid polished rod that eccentric wear occurs.
Description
Technical field
The utility model relates to polished rod seal technical field, in particular to a kind of polished rod seal blowout prevention box.
Background technique
In the development process of oil/gas well, it is easy to because oil/gas well wellbore out of plumb or oil/gas well well head weld
Misoperation when flange, the production tree for causing oil/gas well well head to be installed glance off, and in turn result in the disk of production tree top setting
The center line of root box is not overlapped with the center line of polished rod.In this way, polished rod is easy to and packing box in the production process of oil/gas well
The packing for sealing of interior installation rubs, so that there is a phenomenon where polished rod eccentric wears.After polished rod long-time eccentric wear, not only
It will cause packing to wear and then lead to oil/gas well theres is a phenomenon where hydrojet, it is also possible to polished rod be caused to cause polished rod to be sent out in turn because wearing
Raw de- phenomenon of breaking.Therefore, a kind of polished rod seal blowout prevention box that can be avoided polished rod and eccentric wear occurs is needed.
Utility model content
The problem of the utility model provides a kind of polished rod seal blowout prevention box, can solve the polished rod eccentric wear of oil/gas well.Institute
It is as follows to state technical solution:
The utility model provides a kind of polished rod seal blowout prevention box, and the polished rod seal blowout prevention box includes: regulating device, determines
Position device and packing box, the regulating device include pedestal, support base, universal ball end and the first locking nut；
The pedestal, the support base, the universal ball end and first locking nut are cylindrical in shape structure, the bottom
The bottom end of seat is used to be tightly connected with the wellhead assembly of oil/gas well, and the bottom end of the pedestal is provided with the first turn edge；The branch
Support seat is located in first turn edge, and the top of the support base is provided with the first spherical joint, the universal ball end
Bottom end is provided with the second spherical joint, and second spherical joint is located on first spherical joint, and the multi-directional ball
Head can rotate relative to the support base, the first locking screw mother set on the universal ball end, and with the bottom
Seat is fixedly connected, and first locking nut can limit the universal ball end and the support base；
The bottom end of the positioning device is fixedly connected with the top of the universal ball end, the top of the positioning device and institute
It states packing box to be fixedly connected, first packing of the inside of the packing box for setting, the positioning device is described for adjusting
The distance between center line and the center line of polished rod of first packing.
In one possible implementation, the positioning device includes: connecting cylinder, and is set along the radial direction of the connecting cylinder
The multiple positioning mechanisms set；
One end of the connecting cylinder is fixedly connected with the top of the universal ball end, the other end of the connecting cylinder with it is described
Packing box is fixedly connected, and the multiple positioning mechanism is connected to the connecting cylinder respectively.
Optionally, each positioning mechanism in the multiple positioning mechanism includes positioning tube, positioning cover, locating shaft
It holds, bearing slider, bearing jackscrew and pressure cap；
The first end of the positioning tube and the radially secure connection of the connecting cylinder, the second end of the positioning tube with it is described
The first end for positioning cover is tightly connected；
The positioning bearing and the bearing slider are located at the inside of the positioning tube, the positioning bearing and the bearing
The first end of sliding block is hinged, the central axis of axial direction and the polished rod where the positioning bearing, and the positioning bearing
Close to the first end of the positioning tube；
The bearing jackscrew is peripherally disposed first boss, and the first end of the bearing jackscrew passes through the positioning
Cover, and limited by the first boss, the first end of the bearing jackscrew and the second end spiral shell of the bearing slider
Line connection, the bearing slider can drive the positioning bearing along the axial direction of the positioning tube when rotating the bearing jackscrew
It is mobile；
The pressure cap covers in the first boss along the second end of the bearing jackscrew, and the with the positioning cover
Two ends are tightly connected.
Optionally, the second end of the positioning cover is axially disposed second boss annular in shape, and described first is convex
Platform is located at the inside of the second boss, and the pressure cap and the second boss are tightly connected.
Optionally, the multiple positioning mechanism is generally aligned in the same plane, and is uniformly distributed along the circumferencial direction of the connecting cylinder.
Optionally, the packing box includes the first packing cabin and the first packing baffle；
First packing cabin is cylindrical in shape structure, and the top in first packing cabin is provided with the second turn edge, and described
The bottom end in one packing cabin is fixedly connected with the top of the positioning device；
The first packing baffle is annular in shape, and the outer diameter of the first packing baffle is greater than the hole of second turn edge
Diameter, the first packing baffle is between second turn edge and first packing.
Optionally, the packing box further includes the second locking nut；
Second locking nut is located at the lower section in first packing cabin, and fixes and connect with the top of the positioning device
It connects, second locking nut can limit first packing cabin.
Optionally, the polished rod seal blowout prevention box further includes sealing device；
It is fixedly connected between the top of the universal ball end and the bottom end of the positioning device by the sealing device, institute
The inside for stating sealing device is located at the top of the universal ball end for the second packing, second packing to be arranged.
Optionally, the sealing device includes the second packing cabin and the second packing baffle；
Second packing cabin is cylindrical in shape structure, and the top in second packing cabin is provided with third turn edge, and described
The bottom end in two packing cabins is fixedly connected with the top of the universal ball end；
The second packing baffle is annular in shape, and the outer diameter of the second packing baffle is greater than the hole of the third turn edge
Diameter, the second packing baffle is between the third turn edge and second packing.
Optionally, the sealing device further includes third locking nut；
The third locking nut is located at the lower section in second packing cabin, and fixes and connect with the top of the universal ball end
It connects, the third locking nut can limit second packing cabin.
The beneficial effect of technical solution provided by the utility model includes at least:
In the utility model, polished rod sequentially pass through from the bottom to top pedestal, support base, universal ball end, the first locking nut,
After positioning device and packing box, the wellhead assembly of pedestal and oil/gas well is tightly connected, support base and universal ball end are successively sat
It falls in pedestal, and by the first locking screw mother set on universal ball end.First packing, and and positioning device are set in packing box
Top be fixedly connected after, the center line and the distance between center line of polished rod of the first packing are adjusted by positioning device, with
The center line for guaranteeing the first packing is overlapped with the center line of polished rod.Later, by the top of the bottom end of positioning device and universal ball end
It is fixedly connected, universal ball end, positioning device and packing box, which are fixed, becomes an entirety, universal ball end is rotated further by, to guarantee
The center line of universal ball end is overlapped with the center line of polished rod, and then is again fixedly connected with the first locking nut with pedestal, to ten thousand
It is limited to bulb and support base, to guarantee that the center line of the first packing is overlapped with the center line of polished rod, is avoided in oil gas
Eccentric wear occurs for polished rod in well production process.In addition, when the first locking nut is fixedly connected with pedestal, moreover it is possible to promote in first
It turns edge and forms sealing between the bottom end of support base and between the first spherical joint and the second spherical joint, to avoid sending out
Raw leakage.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of the schematic diagram of the section structure of polished rod seal blowout prevention box provided by the embodiment of the utility model；
Fig. 2 is a kind of the schematic diagram of the section structure of positioning mechanism provided by the embodiment of the utility model；
Fig. 3 is the schematic diagram of the section structure of another polished rod seal blowout prevention box provided by the embodiment of the utility model.
Appended drawing reference:
1: regulating device；11: pedestal；12: support frame；13: universal ball end；14: the first locking nuts；
2: positioning device；21: connecting cylinder；22: positioning mechanism；23: positioning tube；24: positioning cover；25: positioning bearing；
26: bearing slider；27: bearing jackscrew；28: pressure cap；
3: packing box；31: the first packing cabins；32: the first packing baffles；33: the second locking nuts；
4: sealing device；41: the second packing cabins；42: the second packing baffles；43: third locking nut.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Fig. 1 illustrates a kind of structural schematic diagram of polished rod seal blowout prevention box of the utility model embodiment.Such as 1 institute of attached drawing
Show, polished rod seal blowout prevention box includes: regulating device 1, positioning device 2 and packing box 3, and regulating device 1 includes pedestal 11, support base
12, universal ball end 13 and the first locking nut 14.Pedestal 11, support base 12, universal ball end 13 and the first locking nut 14 are in
Tubular structure, the bottom end of pedestal 11 are used to be tightly connected with the wellhead assembly of oil/gas well, and the bottom end of pedestal 11 is provided in first
It turns edge；Support base 12 is located in the first turn edge, and the top of support base 12 is provided with the first spherical joint, universal ball end 13
Bottom end is provided with the second spherical joint, and the second spherical joint is located on the first spherical joint, and universal ball end 13 can be opposite
It rotates in support base 12, the first 14 sets of locking nut is fixedly connected on universal ball end 13, and with pedestal 11, the first locking
Nut 14 can limit universal ball end 13 and support base 12；The bottom end of positioning device 2 and the top of universal ball end 13 are solid
Fixed connection, the top of positioning device 2 are fixedly connected with packing box 3, first packing of the inside of packing box 3 for setting, positioning
Device 2 is for adjusting the distance between center line and center line of polished rod of the first packing.
In the utility model embodiment, polished rod sequentially pass through from the bottom to top pedestal 11, support base 12, universal ball end 13,
After first locking nut 14, positioning device 2 and packing box 3, the wellhead assembly of pedestal 11 and oil/gas well is tightly connected, will be supported
Seat 12 and universal ball end 13 are successively located in pedestal 11, and by 14 sets of the first locking nut on universal ball end 13.In packing
First packing is set in box 3, and after being fixedly connected with the top of positioning device 2, is adjusted in the first packing by positioning device
The distance between heart line and the center line of polished rod, to guarantee that the center line of the first packing is overlapped with the center line of polished rod.Later, will
The bottom end of positioning device is fixedly connected with the top of universal ball end 13, and universal ball end 13, positioning device 2 and packing box 3 are consolidated
Surely become an entirety, be rotated further by universal ball end 13, to guarantee that the center line of universal ball end 13 is overlapped with the center line of polished rod, into
And be again fixedly connected with the first locking nut 14 with pedestal 11, to be limited to universal ball end 13 and support base 12, to protect
The center line for demonstrate,proving the first packing is overlapped with the center line of polished rod, avoids the polished rod in oil/gas well production process that eccentric wear occurs.In addition,
When the first locking nut 14 is fixedly connected with pedestal 11, additionally it is possible to promote the first turn edge and support base 12 bottom end it
Between and the first spherical joint and the second spherical joint between formed sealing, to avoid revealing.
In addition, by pumping unit to oil/gas well carry out production process in, if pumping unit ground occur sink or
The horse head of pumping unit will drive polished rod after glancing off and glance off, and the radial forces of polished rod deflection can act at this time
On polished rod seal blowout prevention box, to avoid the first packing being arranged in polished rod and packing box 3 that eccentric wear occurs.Further, polished rod
Metering device for measuring active force can be installed, in order to be able to which it is inclined to read polished rod by metering device on sealed blowout preventing box
Oblique radial forces.When the radial forces of polished rod deflection are larger, operator can be leveled pumping unit, thus
Avoid the damage caused by polished rod seal blowout prevention box.In addition, the reading of metering device can be passed through when rotating universal ball end 13
Determine whether the center line of universal ball end 13 is overlapped with the center line of polished rod.Since operator can be according to the reading of metering device
Number determines the skew direction of pumping unit or the skew direction of universal ball end 13, and therefore, operator can be based on metering device
Reading quickly determine pumping unit leveling direction or quickly determine universal ball end 13 rotation direction.
Wherein, the bottom end of pedestal 11 can be set turns edge outside, and the bottom end of such pedestal 11 can be between wellhead assembly
It is achieved a fixed connection by way of clamp connection.Certainly, the bottom end of pedestal 11 can be set to other modes, pedestal 11 and well
It realizes and is tightly connected by other means between mouth device, for example, the side being connected through a screw thread between pedestal 11 and wellhead assembly
Formula realizes connection.
It can be set between first turn edge and support base 12 and between the first spherical joint and the second spherical joint
Sealing ring, in order to after the first locking nut 14 is fixedly connected with pedestal 11, can to the first turn edge and support base 12 it
Between and the first spherical joint and the second spherical joint between the sealing ring that is arranged formed and squeeze, to improve sealing effect.Into
One step, on the end face of bottom end and the end face of the first spherical joint of the upper surface and/or support base 12 of the first turn edge
The sealed groove to match with sealing ring can be set, to avoid between the first turn edge and support base 12 and first
Sealing ring is displaced during squeezing between spherical joint and the second spherical joint, while being avoided in rotation universal ball end 13
When sealing ring be displaced.It should be noted that in order to guarantee that universal ball end 13 can relatively rotate with support base 12, the
The internal diameter of one locking nut 14 is greater than the outer diameter of universal ball end 13.
Due to needing through the first locking nut 14 to multi-directional ball after the first locking nut 14 is fixedly connected with pedestal 11
First 13 and support base 12 limited, therefore, external screw thread has can be set in the first locking nut 14, and the top of pedestal 11 is provided with
Internal screw thread, the mode being connected through a screw thread between the first locking nut 14 and pedestal 11 at this time achieve a fixed connection.In addition, first
The end face on the top of locking nut 14 can be in polygon, pass through the first locking nut of tool clamping to facilitate operation personnel
14, realization is fixedly connected with pedestal 11.
The 4th turn edge has can be set in the top of positioning device 2, in order to can be by the 4th turn edge to packing box 3
First packing of interior setting is limited.In this way, when the wall thickness on the top of positioning device is relatively thin, screw packing box 3 with
During the top of positioning device 2, it can be overflowed to avoid the first packing along the lower end in the first packing cabin.
In the utility model embodiment, as shown in Fig. 1, positioning device 2 may include: connecting cylinder 21, and along connecting cylinder
The 21 multiple positioning mechanisms 22 being arranged radially；One end of connecting cylinder 21 is fixedly connected with the top of universal ball end 13, connecting cylinder
21 other end is fixedly connected with packing box 3, and multiple positioning mechanisms 22 are connected to connecting cylinder 21 respectively.
Wherein, the outer diameter of the one end being fixedly connected on connecting cylinder 21 with packing box 3 can be less than the top with universal ball end 13
The outer diameter of the one end being fixedly connected is held, certainly, the outer diameter at 21 both ends of connecting cylinder can also be equal, and the utility model embodiment is to this
Without limitation.Multiple positioning mechanisms 22 include at least three positioning mechanisms 22, in order to be able to adjust the first disk along any direction
The distance between center line and the center line of polished rod of root.Multiple positioning mechanisms 22 can be generally aligned in the same plane, and along connecting cylinder
21 circumferencial direction is uniformly distributed.For example, when multiple positioning mechanisms 22 include three positioning mechanisms 22, three positioning mechanisms 22
Angle of circumference between two positioning mechanisms 22 of middle arbitrary neighborhood is 120 degree.Alternatively, when multiple positioning mechanisms 22 include four positioning
When mechanism 22, the angle of circumference in four positioning mechanisms 22 between two positioning mechanisms 22 of arbitrary neighborhood is 90 degree.
Wherein, it is being adjusted by multiple positioning mechanisms 22 at a distance between center line of the center line of first packing with polished rod
When, as shown in Fig. 2, each positioning mechanism 22 in multiple positioning mechanisms 22 includes positioning tube 23, positioning cover 24, positioning
Bearing 25, bearing slider 26, bearing jackscrew 27 and pressure cap 28；The first end of positioning tube 23 and the radially secure company of connecting cylinder 21
It connects, the second end of positioning tube 23 and the first end of positioning cover 24 are tightly connected；Bearing 25 and bearing slider 26 are positioned positioned at fixed
The inside of position cylinder 23, positions bearing 25 and the first end of bearing slider 26 is hinged, the axial direction and polished rod where positioning bearing 25
Central axis, and bearing 25 is positioned close to the first end of positioning tube 23；Bearing jackscrew 27 is peripherally disposed have it is first convex
Platform, the first end of bearing jackscrew 27 passes through positioning cover 24, and is limited by first boss, the first end of bearing jackscrew 27
It is threadedly coupled with the second end of bearing slider 26, bearing slider 26 can drive positioning 25 edge of bearing in swivel bearing jackscrew 27
The axial movement of positioning tube 23；Pressure cap 28 covers in first boss along the second end of bearing jackscrew 27, and with positioning cover 24
Second end is tightly connected.
Based on above-mentioned setting, since positioning cover 24 and pressure cap 28 pass through first boss and are limited bearing jackscrew 27
Position, so as to avoid bearing jackscrew 27 from moving along axial.It, can be in this way, in operator's swivel bearing jackscrew 27
Promote bearing slider 26 to relatively move in positioning tube 23 along axial, and then drives the positioning edge in positioning tube 23 of bearing 25
It is axial to move.Due to the axial direction of positioning bearing 25 and the central axis of polished rod, in this way in positioning 25 moving process of bearing
In, the surfaces of revolution of positioning bearing 25 can be contacted with polished rod, during polished rod pumps, positioning bearing 25
The surfaces of revolution can be moved synchronously with polished rod, so as to avoid the positioning resistance caused by polished rod of bearing 25.
Wherein, rotating handle can also be arranged in the second end of bearing jackscrew 27, to facilitate the operation of operator.Positioning
Bearing 25 can be deep groove ball bearing, position bearing 25 or other bearings certainly, the utility model embodiment to this not
It limits.The axially disposed symmetrical fixed-wing of a pair in the end face of the first end of bearing slider 26, it is fixed that the length of fixed-wing is greater than
The radius of position bearing 25, positioning bearing 25 are located between a pair of of fixed-wing, and by bearing wear pin sequentially pass through the first fixed-wing,
Bearing 25 and the second fixed-wing are positioned, is realized hinged between positioning bearing 25 and bearing slider 26.Certainly, the first fixed-wing and
Righting gasket can be set between positioning bearing 25 respectively in second fixed-wing, glances off to avoid positioning bearing 25.
The inner wall of positioning tube 23 is axially disposed sliding groove, and the limit to match with sliding groove is provided on bearing slider 26
Position boss, to guarantee that positive stop lug boss can be stuck in sliding groove, to avoid in swivel bearing jackscrew 27, bearing slider 26 is sent out
Raw synchronous rotary.
Sealed connection can be realized by welding between pressure cap 28 and the second end for positioning cover 24.Certainly, it presses
Sealed connection can also be realized by other means between cap 28 and the second end for positioning cover 24.Position the second end of cover 24
Axially disposed to have second boss annular in shape, first boss is located at the inside of second boss, and pressure cap 28 and second boss are close
Envelope connection is to realize the sealed connection between pressure cap 28 and the second end for positioning cover 24.Wherein, pressure cap 28 and second boss
Between can be connected through a screw thread mode and realize connection, further in order to improve the effect of the sealing between pressure cap 28 and second boss
Fruit, the inner wall of second boss is in step-like, and internal diameter of the second boss close to one end of positioning cover 24 is less than remotely located cylinder
The internal diameter of one end of lid 24, can be set gasket seal between pressure cap 28 and first boss, and gasket seal and first boss it
Between stop baffle can be set, Glan can be set between gasket seal and pressure cap 28.Wherein, the outer diameter of stop baffle is greater than the
The internal diameter of the small one end of internal diameter on two boss, such stop baffle can avoid gasket seal from contacting with first boss, to keep away
Exempt to form resistance in swivel bearing jackscrew 27.The outer diameter of Glan is less than the internal diameter of one end that internal diameter is big in second boss, in this way
Screwing pressure cap 28 and when second boss, can by Glan to gasket-like at extruding, to promote gasket that elasticity occurs
Deformation, and then realize the sealing between pressure cap 28 and second boss.Wherein, close in addition to being arranged between pressure cap 28 and first boss
Outside gasket, sealed packing etc. can also be set, and the utility model embodiment does not limit this.
In the utility model embodiment, as shown in Fig. 1, packing box 3 includes the first packing cabin 31 and the first packing baffle
32；First packing cabin 31 is cylindrical in shape structure, and the top in the first packing cabin 31 is provided with the second turn edge, the bottom in the first packing cabin 31
End is fixedly connected with the top of positioning device 2；First packing baffle 32 is annular in shape, and the outer diameter of the first packing baffle 32 is greater than the
The aperture of two turn edges, the first packing baffle 32 is between the second turn edge and the first packing.
Since the outer diameter of the first packing baffle 32 is greater than the aperture of the second turn edge, so as to guarantee the first packing cabin 31
First packing of interior setting is leaked out from the top in the first packing cabin 31.The bottom end in the first packing cabin 31 and the top of positioning device 2
Between the mode that can be connected through a screw thread realize sealed connection, can be right in this way, during screwing the first packing cabin 31
First packing, which is formed, to be squeezed, to guarantee the leakproofness between the first packing and polished rod.
Further, as shown in Fig. 1, packing box 3 can also include the second locking nut 33；Second locking nut 33
It is fixedly connected in the lower section in the first packing cabin 31, and with the top of positioning device 2, the second locking nut 33 can be to the first packing
Cabin 31 is limited.
Since the second locking nut 33 is located at the lower section in the first packing cabin 31, the first packing cabin 31 and positioning device are being screwed
After 2 top, the second locking nut 33 can be screwed, to guarantee that the second locking nut 33 can apply the first packing cabin 31
Upward active force, to realize the limit to the first packing cabin 31.Since the first packing cabin 31 is in the work of upward active force
Squeezed with lower formed between the external screw thread on the top of positioning device 2, thus further improve the first packing cabin 31 with
Leakproofness between positioning device 2.
In the utility model embodiment, such as shown in Fig. 3, polished rod seal blowout prevention box further includes sealing device 4；Multi-directional ball
It is fixedly connected between first 13 top and the bottom end of positioning device 2 by sealing device 4, the inside of sealing device 4 is for being arranged
Second packing, the second packing are located at the top of universal ball end 13.
Wherein, as shown in Fig. 3, sealing device 4 includes the second packing cabin 41 and the second packing baffle 42；Second packing
Cabin 41 is cylindrical in shape structure, and the top in the second packing cabin 41 is provided with third turn edge, the bottom end in the second packing cabin 41 and multi-directional ball
First 13 top is fixedly connected；Second packing baffle 42 is annular in shape, and the outer diameter of the second packing baffle 42 is greater than third turn edge
Aperture, the second packing baffle 42 is between third turn edge and the second packing.
Since the outer diameter of the second packing baffle 42 is greater than the aperture of third turn edge, so as to guarantee the second packing cabin 41
The second packing of interior setting is leaked out from the top in the first packing cabin 31.The bottom end in the second packing cabin 41 and the top of universal ball end 13 it
Between the mode that can be connected through a screw thread realize sealed connection, can be in this way, during screwing the second packing cabin 41
Two packings, which are formed, to be squeezed, to guarantee the leakproofness between the second packing and polished rod.Wherein, when screwing the second packing cabin 41,
If the wall thickness on the top of universal ball end 3 is relatively thin, in order to avoid the second packing is overflowed along the lower end in the second packing cabin 41, multi-directional ball
The 5th turn edge has can be set in first 13 top, to be limited by the 5th turn edge to the second packing.
Further, as shown in Fig. 3, sealing device 4 further includes third locking nut 43；Third locking nut 43 is located at
The lower section in the second packing cabin 41, and be fixedly connected with the top of universal ball end 13, third locking nut 43 can be to the second packing
Cabin 41 is limited.
In the normal productive process of oil/gas well, in order to avoid resistance that polished rod moves back and forth is larger, the second packing at this time
It may be at quasi- pressure condition, that is to say and elastic deformation does not occur.In order to guarantee that the second packing is in quasi- pressure condition, the second packing cabin
Connection between 41 and universal ball end 13 may loosen, at this point, in order to avoid universal ball end 13 and the second packing cabin 41
Between leak, between the second packing cabin 41 and universal ball end 13 connect after, third locking nut 43 can be screwed, with right
Second packing cabin 41 applies upward active force, to limit to the second packing cabin 41.Simultaneously as the second packing cabin 41
It is formed and is squeezed between the external screw thread on the top of universal ball end 13 under the action of upward active force, to improve the second disk
Leakproofness between root cabin 41 and universal ball end 13.
In the utility model embodiment, since in the normal productive process of oil/gas well, the second packing is in quasi- pressure condition,
Substantially the second packing will not be caused to wear during polished rod moves back and forth in this way.The effect generated due to polished rod by deflection
Power acts on positioning bearing 25, so as to reduce the abrasion between polished rod and the first packing, improves making for the first packing
Use the service life.
When needing replacing the first packing, third locking nut 43 can be first unscrewed downwards, screws the second packing still further below
Cabin 41, to realize the sealing of polished rod by the second packing.It unscrews the second locking nut 33 downwards later, unscrew upwards and dismantles
One packing cabin 31, to be replaced to the first packing in the first packing cabin 31.After the completion, it is screwed down the first packing cabin 31 simultaneously
The second locking nut 33 is screwed upwards, realizes the sealing between the first packing cabin 31 and positioning device 2.Later, rotation upwards
Loose second packing cabin 41 turns pressure condition so that the second packing is in, and third locking nut 43 is being screwed upwards, to realize the second disk
Sealing between root cabin 41 and universal ball end 13.
It should be noted that term position involved in the utility model embodiment is attached to correspond in attached drawing 1 and attached drawing 3
Subject to orientation shown in figure, it is merely illustrative the structure of material-pouring device, and do not have the meaning limited.
In the utility model embodiment, pedestal, support base, universal ball end, the first lock are sequentially passed through from the bottom to top in polished rod
Tight nut, third locking nut, the second packing baffle, the second packing cabin, connecting cylinder, the second locking nut, the first packing baffle
Behind the first packing cabin, the wellhead assembly of pedestal and oil/gas well is tightly connected, support base and universal ball end are successively located at
In pedestal, and by the first locking nut and third locking screw mother set on universal ball end, by the top in the second packing cabin and connection
Cylinder is fixedly connected.First packing is set in the first packing cabin, and after the bottom end in the first packing cabin is fixedly connected with connecting cylinder,
The distance between center line and the center line of polished rod of the first packing are adjusted, by multiple positioning mechanisms to guarantee the first packing
Center line is overlapped with the center line of polished rod.Later, the second packing is set in the second packing cabin, and by the top of universal ball end with
The bottom end in the second packing cabin is fixedly connected, and universal ball end, the second packing cabin, connecting cylinder and the first packing cabin is fixed as one
A entirety, is rotated further by universal ball end, to guarantee that the center line of universal ball end is overlapped with the center line of polished rod, and then again by the first lock
Tight nut is fixedly connected with pedestal, to be limited by the first locking nut to universal ball end and support base, thus guarantee the
The center line of one packing is overlapped with the center line of polished rod, avoids the polished rod in oil/gas well production process that eccentric wear occurs.In addition, will
When first locking nut is fixedly connected with pedestal, additionally it is possible to promote between the first turn edge and the bottom end of support base and first
Sealing is formed between spherical joint and the second spherical joint, avoids that leakage phenomenon occurs.
The foregoing is merely the illustrative embodimentss of the utility model, are not intended to limit the utility model, all in this reality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the utility model
Within protection scope.
Claims (10)
1. a kind of polished rod seal blowout prevention box, which is characterized in that the polished rod seal blowout prevention box includes: regulating device (1), positioning dress
(2) and packing box (3) are set, the regulating device (1) includes pedestal (11), support base (12), universal ball end (13) and the first lock
Tight nut (14)；
The pedestal (11), the support base (12), the universal ball end (13) and first locking nut (14) are in cylinder
Shape structure, the bottom end of the pedestal (11) are used to be tightly connected with the wellhead assembly of oil/gas well, and the bottom end of the pedestal (11) is set
It is equipped with the first turn edge；The support base (12) is located in first turn edge, the top setting of the support base (12)
There is the first spherical joint, the bottom end of the universal ball end (13) is provided with the second spherical joint, and second spherical joint is located
On first spherical joint, and the universal ball end (13) can rotate relative to the support base (12), described
First locking nut (14) covers on the universal ball end (13), and is fixedly connected with the pedestal (11), first locking
Nut (14) can limit the universal ball end (13) and the support base (12)；
The bottom end of the positioning device (2) is fixedly connected with the top of the universal ball end (13), the top of the positioning device (2)
End is fixedly connected with the packing box (3), first packing of the inside of the packing box (3) for setting, the positioning device
(2) for adjusting the distance between center line and center line of polished rod of first packing.
2. polished rod seal blowout prevention box as described in claim 1, which is characterized in that the positioning device (2) includes: connecting cylinder
(21), and along the connecting cylinder (21) the multiple positioning mechanisms (22) being arranged radially；
One end of the connecting cylinder (21) is fixedly connected with the top of the universal ball end (13), the connecting cylinder (21) it is another
End is fixedly connected with the packing box (3), and the multiple positioning mechanism (22) is connected to the connecting cylinder (21) respectively.
3. polished rod seal blowout prevention box as claimed in claim 2, which is characterized in that each of the multiple positioning mechanism (22)
Positioning mechanism (22) includes positioning tube (23), positioning cover (24), positioning bearing (25), bearing slider (26), bearing jackscrew
(27) and pressure cap (28)；
The first end and the connecting cylinder (21) radially secure connection of the positioning tube (23), the second of the positioning tube (23)
End and the first end of positioning cover (24) are tightly connected；
Positioning bearing (25) and the bearing slider (26) are located at the inside of the positioning tube (23), the positioning bearing
(25) hinged with the first end of the bearing slider (26), the center of axial direction and the polished rod where positioning bearing (25)
Line is vertical, and positioning bearing (25) is close to the first end of the positioning tube (23)；
The bearing jackscrew (27) is peripherally disposed first boss, and the first end of the bearing jackscrew (27) passes through described
It positions cover (24), and is limited by the first boss, the first end of the bearing jackscrew (27) and the bearing are sliding
The second end of block (26) is threadedly coupled, and it is described fixed that the bearing slider (26) can drive when rotating bearing jackscrew (27)
Axial movement of the position bearing (25) along the positioning tube (23)；
The pressure cap (28) covers in the first boss along the second end of the bearing jackscrew (27), and with the positioning cover
(24) second end is tightly connected.
4. polished rod seal blowout prevention box as claimed in claim 3, which is characterized in that the second end of positioning cover (24) is along axis
To being provided with second boss annular in shape, the first boss is located at the inside of the second boss, the pressure cap (28) with
The second boss is tightly connected.
5. polished rod seal blowout prevention box as claimed in claim 2, which is characterized in that the multiple positioning mechanism (22) is located at same
Plane, and be uniformly distributed along the circumferencial direction of the connecting cylinder (21).
6. polished rod seal blowout prevention box as described in claim 1, which is characterized in that the packing box (3) includes the first packing cabin
(31) and the first packing baffle (32)；
First packing cabin (31) is cylindrical in shape structure, and the top in first packing cabin (31) is provided with the second turn edge, institute
The bottom end for stating the first packing cabin (31) is fixedly connected with the top of the positioning device (2)；
The first packing baffle (32) is annular in shape, and the outer diameter of the first packing baffle (32) is greater than second turn edge
Aperture, the first packing baffle (32) is between second turn edge and first packing.
7. polished rod seal blowout prevention box as claimed in claim 6, which is characterized in that the packing box (3) further includes the second locking
Nut (33)；
Second locking nut (33) is located at the lower section in first packing cabin (31), and the top with the positioning device (2)
End is fixedly connected, and second locking nut (33) can limit first packing cabin (31).
8. polished rod seal blowout prevention box as described in claim 1, which is characterized in that the polished rod seal blowout prevention box further includes sealing
Device (4)；
It is fixed by the sealing device (4) between the top of the universal ball end (13) and the bottom end of the positioning device (2)
Connection, the inside of the sealing device (4) are located at the universal ball end (13) for the second packing, second packing to be arranged
Top.
9. polished rod seal blowout prevention box as claimed in claim 8, which is characterized in that the sealing device (4) includes the second packing
Cabin (41) and the second packing baffle (42)；
Second packing cabin (41) is cylindrical in shape structure, and the top in second packing cabin (41) is provided with third turn edge, institute
The bottom end for stating the second packing cabin (41) is fixedly connected with the top of the universal ball end (13)；
The second packing baffle (42) is annular in shape, and the outer diameter of the second packing baffle (42) is greater than the third turn edge
Aperture, the second packing baffle (42) is between the third turn edge and second packing.
10. polished rod seal blowout prevention box as claimed in claim 8, which is characterized in that the sealing device (4) further includes third lock
Tight nut (43)；
The third locking nut (43) is located at the lower section in second packing cabin (41), and the top with the universal ball end (13)
End is fixedly connected, and the third locking nut (43) can limit second packing cabin (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527245.XU CN209195332U (en) | 2018-09-18 | 2018-09-18 | Polished rod seal blowout prevention box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821527245.XU CN209195332U (en) | 2018-09-18 | 2018-09-18 | Polished rod seal blowout prevention box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209195332U true CN209195332U (en) | 2019-08-02 |
Family
ID=67406278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821527245.XU Active CN209195332U (en) | 2018-09-18 | 2018-09-18 | Polished rod seal blowout prevention box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209195332U (en) |
-
2018
- 2018-09-18 CN CN201821527245.XU patent/CN209195332U/en active Active
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