CN206458393U - Blowout preventer for broken oil pumping unit polish rod - Google Patents
Blowout preventer for broken oil pumping unit polish rod Download PDFInfo
- Publication number
- CN206458393U CN206458393U CN201621477103.8U CN201621477103U CN206458393U CN 206458393 U CN206458393 U CN 206458393U CN 201621477103 U CN201621477103 U CN 201621477103U CN 206458393 U CN206458393 U CN 206458393U
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- China
- Prior art keywords
- polished rod
- blowout
- closure
- hole
- dropping
- 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.)
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Links
- 238000005086 pumping Methods 0.000 title abstract description 6
- 230000002265 prevention Effects 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 3
- 235000019198 oils Nutrition 0.000 description 15
- 238000012856 packing Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000003129 oil well Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The utility model discloses a blowout preventer is taken off absolutely to beam-pumping unit polished rod, this blowout preventer include the tubulose connector of going up, go up the connector and include the main part and set up the anti-blowout cover in the main part bottom, the middle part of preventing blowout cover is provided with the first polished rod through-hole that is linked together with the main part, but is provided with tilting's sealed lid on the bottom surface of preventing blowout cover for open or the first polished rod through-hole of shutoff. The bottom wall of the sealing cover and the bottom surface of the blowout prevention cover are respectively connected with two ends of the torsion spring. The top wall of the sealing cover is provided with a roller, the side wall of the roller is provided with an arc-shaped groove along the axial direction, and the arc-shaped groove is consistent with the radian of the side wall of the polished rod of the pumping unit. The blowout preventer further comprises a tubular lower connecting body arranged at the bottom of the blowout preventer cover, and the sealing cover is arranged in an inner cavity of the lower connecting body. The utility model provides a blowout preventer is taken off absolutely to beam-pumping unit polished rod, the wearability is strong, and convenient to use is suitable for the scale and popularizes and applies.
Description
Technical field
The utility model is related to well recovery field, more particularly to a kind of dropping blowout preventer for polished rod of beam unit.
Background technology
Sucker rod is the important force transferring part in oil pumper, and its upper end connection polished rod, lower end connection oil well pump passes through oil pumping
The up and down motion of polished rod is transferred to oil well pump by bar, and drives oil well pump to carry out oil producing operation.Taped the latent power dynamics however as oil field
Continuous increase, the depth of oil well pump is continuously increased so that increasingly serious the problems such as sucker rod aging, inclined shaft eccentric wear, corrosion, leads
The interruption of sucker rod and polished rod is caused to take off number of times increase, the risk increase that oily OIH, water spray from well head easily causes blowout etc.
Accident, while being polluted to environment.Therefore it provides a kind of device for preventing from causing blowout when oil-extractor polish-rod is disconnected de- is very
Important.
Prior art provides a kind of Multifunctional blowout-prevention packing kit for oil extraction well, and the device is Split type structure, including upper
Packing box and lower packing box, the effect of upper packing box essentially consists in antitheft, and the effect of lower packing box is to prevent light rod-broken from making
Into blowout.Lower packing box is in cylinder, and top is that the circle for passing through polished rod is provided with the middle part of blowout prevention lid, blowout prevention lid
Hole, blowout prevention lid lower surface is provided with rotatable conical blowout prevention valve, and blowout prevention valve is connected torsion spring respectively with blowout prevention lid lower surface
Pulley is installed on two ends, the roof of blowout prevention valve.In use, the device is sleeved on into production wellhead, polished rod is set to pass through upper packing
The circular hole that box and lower packing box blowout prevention are covered, the pulley that now blowout prevention valve is on open mode, its roof connects with polished rod
Touch.When polished rod moves up and down, pulley carrys out back rotation with polished rod, does not interfere with the motion of polished rod.When polished rod and sucker rod occur
When disconnected de-, polished rod departs from the circular hole of blowout prevention lid, and blowout prevention valve is rotated up in the presence of torsion spring, and blocks the circle that blowout prevention is covered
Hole, so as to prevent the oil in oil well, water etc. from being sprayed along circular hole, it is to avoid the pollution of production wellhead.
Designer has found that prior art at least has following technical problem：
Prior art provide device in, the contact surface between pulley and polished rod is smaller, pulley with polished rod move up and down by
Abrasion is more serious, it is necessary to often change, and the work for adding operating personnel is born.
Utility model content
The utility model embodiment technical problem to be solved is that there is provided one kind is wear-resisting and can prevent oil pumper
Light rod-broken causes the dropping blowout preventer for polished rod of beam unit of blowout, and concrete technical scheme is as follows：
The utility model embodiment provides a kind of dropping blowout preventer for polished rod of beam unit, and the preventer includes tubular structure
Upper connector, the upper connector includes main body and is arranged on the blowout prevention lid of the bottom part body, the middle part of the blowout prevention lid
It is provided with the first polished rod through hole being connected with the main body, the bottom surface of the blowout prevention lid and is provided with the sealing that can be rotated upwardly and downwardly
Lid, for opening or blocking the first polished rod through hole, the bottom wall of the closure and blowout prevention base face respectively with torsion spring
Two ends connection.Be provided with the roof of the closure it is axially disposed on roller, the side wall of the roller have arc groove,
The arc groove is used for the side wall for accommodating polished rod；The preventer also includes the tubular structure for being arranged on blowout prevention base portion
Lower connector, the closure be located at the lower connector inner chamber in.
Specifically, preferably, being provided with connecting seat on the face of the blowout prevention base, set on two side walls of the connecting seat
It is equipped with the first relative connecting hole；The end of the closure is extended to be provided with two linking arms, two linking arms
The second relative connecting hole；Bearing pin is arranged in first connecting hole and second connecting hole, make the blowout prevention lid with
The closure is rotatably connected.
Specifically, preferably, the closure opening when, between the capping of the closure and blowout prevention base face
Angle be at least 85 °.
Specifically, preferably, being provided with the sealing lid top wall in roller groove, the roller groove along length side
To roller shaft is provided with, the roller housing can be rotated on the roller shaft around the roller shaft.
Specifically, preferably, the lower connector includes the annular seal space for being used to accommodate the closure, and it is arranged on institute
The connecting cavity of annular seal space lower end is stated, it is positioned inwardly in a radial direction between the annular seal space and the connecting cavity to have dividing plate, the dividing plate
On be provided with the second polished rod through hole.
Specifically, preferably, the diameter of the annular seal space is more than the diameter of the connecting cavity, the second polished rod through hole
Diameter be more than the first polished rod through hole diameter.
Specifically, preferably, being radially provided with connecting plate at the top of the annular seal space, the connecting plate with it is described
Blowout prevention lid is detachably connected.
Specifically, preferably, being detachably connected the connecting plate and the blowout prevention lid using bolt assembly.
Specifically, preferably, external screw thread is provided with the body outer wall of the upper connector, for connecting top
Pipeline.
Specifically, preferably, internal thread is provided with the inwall of the connecting cavity, for connecting lower pipelines.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The dropping blowout preventer for polished rod of beam unit that the utility model embodiment is provided, is rolled by being set on the roof of closure
Take turns, and be provided for accommodating the arc groove of polished rod side wall on wheels side wall, to increase the contact surface between roller and polished rod
Product, the point between prior art middle pulley and polished rod is contacted, the face of roller and polished rod in the utility model embodiment is changed into
Contact, so that the excessive wear of roller and polished rod contact portion is avoided, on the basis of ensureing that polished rod up and down motion is unaffected,
The wearability of roller is improved, extends the service life of roller.Meanwhile, by setting connector under tubulose in blowout prevention base portion, it is
Closure provides receiving space and protection, and is easy to be attached with other pipelines by lower connector, is easy to oil-extractor polish-rod
The use of disconnected de- preventer.It can be seen that, the dropping blowout preventer for polished rod of beam unit that the utility model embodiment is provided, wearability is strong, makes
With convenient, suitable for large-scale promotion application.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation for the dropping blowout preventer for polished rod of beam unit that the utility model embodiment is provided；
Fig. 2 is the structural representation for the closure that the utility model embodiment is provided；
Fig. 3 is the schematic diagram of upper connector and closure bonding state that the utility model embodiment is provided.
Reference is represented respectively：
Connector on 1,
101 main bodys,
102 blowout prevention lids,
1021 first polished rod through holes,
1022 connecting seats,
2 closures,
201 rollers,
2011 arc grooves,
202 roller shafts,
203 linking arms,
3 torsion springs,
4 times connectors,
401 annular seal spaces,
4011 connecting plates,
402 connecting cavities,
403 dividing plates,
4031 second polished rod through holes,
5 bolt assemblies,
6 bearing pins,
7 polished rods.
Embodiment
, below will be to the utility model embodiment party to make the purpose of this utility model, technical scheme and advantage clearer
Formula is described in further detail.
The utility model embodiment provides a kind of dropping blowout preventer for polished rod of beam unit, and as shown in Figure 1, preventer includes
The upper connector 1 of tubular structure, upper connector 1 includes main body 101 and is arranged on the blowout prevention lid 102 of the bottom of main body 101, blowout prevention lid
102 middle part be provided with the first polished rod through hole 1021 being connected with main body 101, the bottom surface of blowout prevention lid 102 be provided with can on
The closure 2 of lower rotation, for opening or blocking the first polished rod through hole 1021, bottom wall and the bottom surface of blowout prevention lid 102 point of closure 2
Two ends not with torsion spring 3 are connected.As shown in Figure 2, it is provided with the roof of closure 2 on roller 201, the side wall of roller 201
Axially disposed to have arc groove 2011, arc groove 2011 is used for the side wall for accommodating polished rod 7.The preventer also includes being arranged on
The lower connector 4 of the tubular structure of the bottom of blowout prevention lid 102, closure 2 is located in the inner chamber of lower connector 4.
The operation principle for the dropping blowout preventer for polished rod of beam unit that the utility model embodiment is provided is as described below：
In polished rod normal operating conditions, upper connector 1 and lower connector 4 are sleeved on the polished rod 7 of oil pumper simultaneously, and
Between packing box and rubber gate, now closure 2 is in roller 201 and polished rod on open mode, the roof of closure 2
7 are in contact.When polished rod 7 normally moves up and down, roller 201 can be rolled along polished rod 7, be used to hold due to being provided with roller 201
Receive the arc groove 2011 of the side wall of polished rod 7, connect the point point between prior art middle pulley and polished rod 7 by arc groove 2011
Touch, it is plane-plane contact to be changed into the utility model embodiment between roller 201 and polished rod 7, so as to add roller 201 and light
Contact area between bar 7, it is to avoid roller 201 and the excessive wear of polished rod 7 contact portion, is ensureing that polished rod 7 moves up and down
On the basis of unaffected, the wearability of roller 201 is improved, the service life of roller 201 is extended.When polished rod 7 and oil pumping
When bar occurs disconnected de-, polished rod 7 departs from the first polished rod through hole 1021 and simultaneously deviate from along upper connector 1, now, roller 201 no longer with light
Bar 7 is contacted, i.e., closure 2 loses the supporting role of polished rod 7, and now closure 2 turns upwards under the rebound effect of torsion spring 3
It is dynamic, so as to block the first polished rod through hole 1021, it is to avoid oil, water in oil well etc. spray at the first polished rod through hole 1021, are beneficial to
Follow-up repairing work is carried out, and effectively prevent the disconnected de- gas blowout accident caused of oil-extractor polish-rod 7, the dirt of production wellhead is prevented
Dye.Meanwhile, the preventer by the bottom of blowout prevention lid 102 set tubulose under connector 4, be closure 2 provide receiving space and
Protection, and be easy to be attached by lower connector 4 and other pipelines, it is easy to the use of dropping blowout preventer for polished rod of beam unit.Can
See, the dropping blowout preventer for polished rod of beam unit that the utility model embodiment is provided, wearability is strong, easy to use, is pushed away suitable for scale
Wide application.
Specifically, the upper connector 1 of the preventer includes main body 101 and is arranged on the blowout prevention lid 102 of the bottom of main body 101,
The part of main body 101 is used to be connected with other pipelines, and provides abundant exercise space for polished rod 7.It is provided with blowout prevention lid 102
The the first polished rod through hole 1021 matched with the diameter of polished rod 7, for make polished rod 7 by and be normally carried out move up and down, the first light
The diameter of rod through-hole 1021 be not required to it is excessive, with reduce polished rod 7 it is disconnected de- when the amount of oil water mixture that may spray, reduce producing well
The risk of blowout.Closure 2 on the bottom surface of blowout prevention lid 102 is used to, when polished rod 7 is disconnected de-, block the first polished rod through hole 1021.Enter
One step, as shown in accompanying drawing 2 and accompanying drawing 3, connecting seat 1022, two sides of connecting seat 1022 are provided with the bottom surface of blowout prevention lid 102
The first relative connecting hole, equivalent to two engaging lugs of two side walls, for making blowout prevention lid 102 and closure 2 are provided with wall
Bearing pin is connected.The end of closure 2, which is extended, is provided with the second relative connection on two linking arms 203, two linking arms 203
Hole, bearing pin 6 is arranged in the first connecting hole and the second connecting hole, blowout prevention lid 102 is rotatably connected with closure 2, sealing
Lid 2 can be rotated upwardly and downwardly in perpendicular, to open or block the first polished rod through hole 1021.Meanwhile, the bottom wall of closure 2 is with preventing
Two ends of spray lid 102 bottom surface respectively with torsion spring 3 are connected, and when closure 2 is in open mode, torsion spring 3 is compressed, and accumulates elastic potential
Can, when polished rod 7 and disconnected de- sucker rod generation, closure 2 loses the support of polished rod 7, the elastic potential energy now accumulated in torsion spring 3
It is released, torsion spring 3 promotes closure 2 to rotate rapidly upward, realizes the automatic plugging of the first polished rod through hole 1021, it is to avoid producing well
The ejection of middle oil, water etc..
When polished rod 7 is in normal operating conditions, closure 2 is in the arc groove 2011 on open mode, roller 201
Just it is in contact with polished rod 7, because roller 201 axially has certain length, so arc groove 2011 also has necessarily
Length, and it is consistent with the radian of polished rod 7, so that the point contact between prominent in the prior art pulley and polished rod 7 is changed into recessed
The roller 201 entered is contacted with the face between polished rod 7, is avoided the excessive wear of roller 201 by changing contact angle and mode, is prolonged
The replacement cycle of long wheel 201, mitigate the work load of operating personnel.Meanwhile, its capping and blowout prevention lid when closure 2 is opened
Angle between 102 bottom surfaces is at least 85 °, and the up and down motion to avoid polished rod 7 is saved by the stop of closure 2 while trying one's best
Save closure 2 to be taken up space, make the dexterousr practicality of whole preventer.
As shown in Figure 2, it is provided with to reduce on the frictional force between closure 2 and polished rod 7, the roof of closure 2
Roller shaft 202 is provided with roller groove, roller groove along its length, roller 201 is sleeved on roller shaft 202, and can be around
Roller shaft 202 carries out 360 ° of rotations, so that roller 201 can be rolled freely when polished rod 7 moves up and down, polished rod 7 is not influenceed
Normal work.The material of roller 201 is preferably brass, further to reduce the frictional force between roller 201 and polished rod 7, is reduced
The abrasion of roller 201, extends the service life of roller 201.
For the ease of the closure of the first polished rod through hole 1021, the bottom of the first polished rod through hole 1021 is provided with chamfering, sealing
Corresponding chamfering is also equipped with the roof of lid 2, so that closure 2 is fitted close with the first polished rod through hole 1021, is prevented effectively from
Oil, water in producing well spray.
In order to when polished rod 7 occurs disconnected de-, temporary transient receiving space be provided to oil, water sprayed in producing well etc., and be
Closure 2 provides space, and the bottom of upper connector 1 is provided with lower connector 4, specifically, and lower connector 4 includes close for accommodating
The annular seal space 401 of capping 2, and it is arranged on the connecting cavity 402 of the lower end of annular seal space 401.The effect of annular seal space 401 is for closure
2 provide receiving space, and the effect of connecting cavity 402 is to connect other pipelines, may ejection in producing well in order to further stop
Oil, water etc., between annular seal space 401 and connecting cavity 402 it is positioned inwardly in a radial direction have be provided with second on dividing plate 403, dividing plate 403
Polished rod through hole 4031, annular seal space 401 is connected with connecting cavity 402 by the second polished rod through hole 4031, so that polished rod 7 is worn from top to bottom
Cross the preventer, it is ensured that the normal up and down motion of polished rod 7.
Further, the diameter of annular seal space 401 be more than connecting cavity 402 diameter, with by annular seal space 401 be closure 2
There is provided sufficient rotation space, the diameter of connecting cavity 402 is equal with the diameter of other connecting pipelines, in order to connecting cavity 402 and
The connection of other connecting pipelines, is easy to installation of the dropping blowout preventer for polished rod of beam unit between packing box and rubber gate.Meanwhile,
The diameter of second polished rod through hole 4031 is more than the diameter of the first polished rod through hole 1021, to be polished rod by the second polished rod through hole 4031
7 provide more fully space, make the up and down motion of polished rod 7 more flexible.
The top of annular seal space 401 is radially provided with connecting plate 4011, in order to lower connector 4 and upper connector 1
Connection.For the ease of the adjustment and maintenance of the installation of dropping blowout preventer for polished rod of beam unit, and closure 2, connecting plate 4011
Use and be detachably connected with blowout prevention lid 102.Connecting plate 4011 can pass through bolt assembly 5, steady pin, buckle with blowout prevention lid 102
Realize and be detachably connected etc. mode, by taking bolt assembly 5 as an example, bolt assembly 5 includes connecting bolt and fixing nut.In blowout prevention lid
Connecting hole is set on 102 positions relative with connecting plate 4011, by connecting bolt also cross connecting plate 4011 and blowout prevention lid 102
Connecting hole, and fixed by fixing nut, connecting plate 4011 is fixedly connected with blowout prevention lid 102.In use, can first will be upper
Connector 1 is sleeved on polished rod 7, behind the position for adjusting closure 2, then lower connector 4 is sleeved on polished rod 7, completes to take out
The installation of oil machine polished rod break-off blowout preventer, connecting plate 4011 is detachably connected mode with blowout prevention lid 102, oil-extractor polish-rod is broken
The easier for installation flexible of preventer is taken off, is easy to regulation.
Because dropping blowout preventer for polished rod of beam unit needs to be arranged between packing box and rubber gate, oil-extractor polish-rod is disconnected de-
Also need to connect other pipelines above and below preventer, for the ease of the connection between pipeline, the outer wall of main body 101 of upper connector 1
On be provided with external screw thread, internal thread is provided with upper pipeline, the inwall of connecting cavity 402 for connecting, for connecting lower tube
Line.Above-mentioned internal thread and external screw thread are adapted with the screw thread in connecting pipeline, in order to dropping blowout preventer for polished rod of beam unit
Install.
Preferred embodiment of the present utility model is the foregoing is only, not to limit protection domain of the present utility model,
It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this reality
Within new protection domain.
Claims (10)
1. a kind of dropping blowout preventer for polished rod of beam unit, the preventer includes the upper connector (1) of tubular structure, the upper connection
Body (1) includes main body (101) and is arranged in the blowout prevention lid (102) of the main body (101) bottom, the blowout prevention lid (102)
Portion is provided with the first polished rod through hole (1021) being connected with the main body (101), the bottom surface of the blowout prevention lid (102) and set
There is the closure (2) that can be rotated upwardly and downwardly, for opening or blocking the first polished rod through hole (1021), the closure (2)
Two ends of the bottom wall with blowout prevention lid (102) bottom surface respectively with torsion spring (3) are connected, it is characterised in that the top of the closure (2)
Being provided with wall axially disposed on roller (201), the side wall of the roller (201) has arc groove (2011), the arc
Groove (2011) is used for the side wall for accommodating polished rod (7)；
The preventer also includes the lower connector (4) for being arranged on the tubular structure of blowout prevention lid (102) bottom, the sealing
(2) are covered to be located in the inner chamber of the lower connector (4).
2. dropping blowout preventer for polished rod of beam unit according to claim 1, it is characterised in that blowout prevention lid (102) bottom surface
On be provided with connecting seat (1022), two side walls of the connecting seat (1022) and be provided with the first relative connecting hole；
The end of the closure (2) is extended to be provided with relatively on two linking arms (203), two linking arms (203)
The second connecting hole；
Bearing pin (6) is arranged in first connecting hole and second connecting hole, make the blowout prevention lid (102) with it is described close
Capping (2) is rotatably connected.
3. dropping blowout preventer for polished rod of beam unit according to claim 1, it is characterised in that when the closure (2) is opened,
Angle between the capping of the closure (2) and the blowout prevention lid (102) bottom surface is at least 85 °.
4. dropping blowout preventer for polished rod of beam unit according to claim 1, it is characterised in that on closure (2) roof
It is provided with roller groove, the roller groove and is provided with roller shaft (202) along its length, the roller (201) is sleeved on
On the roller shaft (202), and it can be rotated around the roller shaft (202).
5. dropping blowout preventer for polished rod of beam unit according to claim 1, it is characterised in that the lower connector (4) includes
For accommodating the annular seal space (401) of the closure (2), and it is arranged on the connecting cavity (402) of the annular seal space (401) lower end,
It is positioned inwardly in a radial direction between the annular seal space (401) and the connecting cavity (402) to have on dividing plate (403), the dividing plate (403)
It is provided with the second polished rod through hole (4031).
6. dropping blowout preventer for polished rod of beam unit according to claim 5, it is characterised in that the annular seal space (401) it is straight
Footpath is more than the diameter of the connecting cavity (402), and the diameter of the second polished rod through hole (4031) is more than the first polished rod through hole
(1021) diameter.
7. dropping blowout preventer for polished rod of beam unit according to claim 5, it is characterised in that at the top of the annular seal space (401)
Connecting plate (4011) is radially provided with, the connecting plate (4011) is detachably connected with the blowout prevention lid (102).
8. dropping blowout preventer for polished rod of beam unit according to claim 7, it is characterised in that make institute using bolt assembly (5)
State connecting plate (4011) and the blowout prevention lid (102) is detachably connected.
9. dropping blowout preventer for polished rod of beam unit according to claim 1, it is characterised in that the institute of the upper connector (1)
State and be provided with external screw thread on main body (101) outer wall, for connecting upper pipeline.
10. dropping blowout preventer for polished rod of beam unit according to claim 5, it is characterised in that the connecting cavity (402) it is interior
Internal thread is provided with wall, for connecting lower pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621477103.8U CN206458393U (en) | 2016-12-30 | 2016-12-30 | Blowout preventer for broken oil pumping unit polish rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621477103.8U CN206458393U (en) | 2016-12-30 | 2016-12-30 | Blowout preventer for broken oil pumping unit polish rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458393U true CN206458393U (en) | 2017-09-01 |
Family
ID=59697828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621477103.8U Active CN206458393U (en) | 2016-12-30 | 2016-12-30 | Blowout preventer for broken oil pumping unit polish rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673468A (en) * | 2022-05-11 | 2022-06-28 | 大庆智邦科技有限公司 | Stepless automatic sealing device for wellhead air pressure |
-
2016
- 2016-12-30 CN CN201621477103.8U patent/CN206458393U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673468A (en) * | 2022-05-11 | 2022-06-28 | 大庆智邦科技有限公司 | Stepless automatic sealing device for wellhead air pressure |
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