CN207686657U - Well mouth sealing device - Google Patents
Well mouth sealing device Download PDFInfo
- Publication number
- CN207686657U CN207686657U CN201721650843.1U CN201721650843U CN207686657U CN 207686657 U CN207686657 U CN 207686657U CN 201721650843 U CN201721650843 U CN 201721650843U CN 207686657 U CN207686657 U CN 207686657U
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- China
- Prior art keywords
- sealing device
- mouth sealing
- well mouth
- main road
- accommodating chamber
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Abstract
The utility model provides a kind of well mouth sealing device, and well mouth sealing device is arranged on the pit shaft at well head, after light rod-broken in pit shaft, well mouth sealing device for blocking pit shaft, including：Shell, shell have main road cavity and branch accommodating chamber, wherein main road cavity is connected to pit shaft, and for being passed through for polished rod, the first end of branch accommodating chamber is connected to main road cavity with main road cavity；End is blocked, end is blocked and the second end in branch accommodating chamber is set；Element and elastic element are blocked, closure element and elastic element are arranged in branch accommodating chamber, wherein between elastic element is located at closure element and blocks end, so that it is contacted setting with polished rod to compress closure element；After light rod-broken, blocks element and main road cavity is entered by branch accommodating chamber under the pressure effect of elastic element and realizes the closure to pit shaft.After the utility model solves the light rod-broken of pumping unit in the prior art, can there are problems that seal failure at well head.
Description
Technical field
The utility model is related to corollary equipment technical fields of recovering the oil, in particular to a kind of well mouth sealing device.
Background technology
At the scene of recovering the oil, the polished rod of pumping unit moves in the pit shaft at well head, polished rod because of its working environment not
The uncertainty of certainty and stress, during the work time, it may occur that disconnected de- phenomenon, polished rod take off once breaking, Bian Huizao
At the seal failure at well head, the phenomenon that the oil liquid leakage at well head occur and pollute environment, or even it will appear serious blowout
Accident, there are certain production safety hidden danger.
Utility model content
The main purpose of the utility model is to provide a kind of well mouth sealing devices, to solve pumping unit in the prior art
Light rod-broken after, can there are problems that seal failure at well head.
To achieve the goals above, the utility model provides a kind of well mouth sealing device, and well mouth sealing device setting exists
On the pit shaft at well head, after light rod-broken in pit shaft, well mouth sealing device for blocking pit shaft, including：Shell, shell
Body has main road cavity and branch accommodating chamber, wherein main road cavity is connected to pit shaft, and main road cavity is propped up for being passed through for polished rod
The first end of road accommodating chamber is connected to main road cavity；End is blocked, end is blocked and the second end in branch accommodating chamber is set；It blocks
Element and elastic element, block element and elastic element is arranged in branch accommodating chamber, wherein elastic element, which is located at, blocks element
And between blocking end, it is set to contact setting with polished rod to compress closure element；After light rod-broken, element is blocked in elasticity
Main road cavity is entered by branch accommodating chamber and realizes the closure to pit shaft under the pressure effect of element.
Further, the hardness for blocking element closure element spherical in shape and spherical in shape is less than the hardness of polished rod.
Further, shell includes：Valve storehouse；Valve seat, valve seat are arranged on valve storehouse, and positioned at the remote of valve storehouse
One end from pit shaft, wherein valve storehouse and valve seat are spliced to form main road cavity, and valve storehouse has branch accommodating chamber.
Further, valve seat is removably disposed on valve storehouse.
Further, the inner surface of valve seat, which protrudes above, is provided with limiting section, and limiting section has central through hole, central through hole
Aperture be less than block element diameter.
Further, the surface of limiting section being located at central through hole is adapted with the outer surface for blocking element.
Further, valve storehouse towards the helicitic texture being provided on the inner wall of main road cavity for being connect with pit shaft,
Helicitic texture is located at one end of the separate valve seat in valve storehouse.
Further, well mouth sealing device further includes baffle plate, and baffle plate is arranged in main road cavity, and baffle plate is located at
The side of the close well head of main road cavity and the intersection point of branch accommodating chamber, baffle plate have center via, the aperture of center via
Less than the diameter for blocking element.
Further, it blocks end and shell is detachably connected, and the junction of the two is provided with sealing ring.
Further, elastic element is spring.
Further, branch accommodating chamber is perpendicular to main road cavity.
Using the technical solution of the utility model, the wellhead sealing by the way that the application is arranged on the pit shaft at well head fills
It sets, in this way after the light rod-broken of pumping unit, blocks element and master is entered by branch accommodating chamber under the pressure effect of elastic element
Road cavity blocks element and realizes to can block element top pressure in main road cavity by the fluid of Downhole jetting to well head
Closure to main road cavity to avoid fluid from continuing upper spray realizes the closure of pit shaft, not only avoids at well head and occurs
Oil liquid leakage and pollute environment, additionally it is possible to be effectively prevented the generation of gas blowout accident, greatly improved the safety of oil producing operation
Property.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
In the accompanying drawings：
Fig. 1 shows a kind of well mouth sealing device with part polished rod of alternative embodiment according to the present utility model
Internal structure schematic diagram；
Fig. 2 shows the main view schematic cross-sectional views of the well mouth sealing device with part polished rod in Fig. 1.
Wherein, above-mentioned attached drawing includes the following drawings label：
1, polished rod；10, shell；11, main road cavity；12, branch accommodating chamber；13, valve storehouse；131, helicitic texture；14, all
That seat；20, end is blocked；30, element is blocked；40, elastic element；50, limiting section；51, central through hole；60, baffle plate；61、
Center via.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to this practicality
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
There is the every other embodiment obtained under the premise of making creative work, shall fall within the protection scope of the present invention.
There can be seal failure at well head after light rod-broken in order to solve the problem of pumping unit in the prior art, this
Utility model provides a kind of well mouth sealing device.
As depicted in figs. 1 and 2, well mouth sealing device is arranged on the pit shaft at well head, when the polished rod 1 in pit shaft is disconnected
After de-, well mouth sealing device includes shell 10, blocks end 20, blocks 30 and of element for blocking pit shaft, well mouth sealing device
Elastic element 40, shell 10 have main road cavity 11 and branch accommodating chamber 12, wherein main road cavity 11 is connected to pit shaft, main road
For being passed through for polished rod 1, the first end of branch accommodating chamber 12 is connected to cavity 11 with main road cavity 11, is blocked the setting of end 20 and is being propped up
The second end of road accommodating chamber 12, blocks element 30 and elastic element 40 is arranged in branch accommodating chamber 12, wherein elastic element 40
Between blocking element 30 and blocking end 20, it is set to contact setting with polished rod 1 to compress closure element 30, when polished rod 1
After disconnected de-, block element 30 and main road cavity 11 is entered by branch accommodating chamber 12 under the pressure effect of elastic element 40 and is realized pair
The closure of pit shaft.
By the way that the well mouth sealing device of the application is arranged on the pit shaft at well head, in this way when the polished rod of pumping unit 1 is disconnected de-
Afterwards, it blocks element 30 and main road cavity 11 is entered by branch accommodating chamber 12 under the pressure effect of elastic element 40, to by underground
30 top pressure of element can will be blocked in main road cavity 11 by being ejected into the fluid at well head, and blocking element 30 realizes to main road cavity
11 closure realizes the closure of pit shaft to avoid fluid from continuing upper spray, not only avoid at well head there is oil liquid leakage and
Pollute environment, additionally it is possible to be effectively prevented the generation of gas blowout accident, greatly improve the safety of oil producing operation.
In the alternative embodiment of the application diagram, the hard of the closure element 30 spherical in shape and spherical in shape of element 30 is blocked
Hardness of the degree less than polished rod 1.In this way, due to polished rod 1 with block element 30 contact, closure element 30 spherical in shape can roll
It is dynamic, to reduce when polished rod 1 moves block the frictional resistance between element 30, the smaller as best one can generation of abrasion, and
And since the hardness of closure element 30 spherical in shape is less than the hardness of polished rod 1, in this way, blocking element 30 is used as wear-out part, and light
Bar 1 will not be worn, and ensure that polished rod 1 can be moved steadily and realize and successfully recover the oil.
Preferably, a diameter of 50mm of closure element 30 spherical in shape.
As depicted in figs. 1 and 2, shell 10 includes valve storehouse 13 and valve seat 14, and valve seat 14 is arranged on valve storehouse 13,
And one end of the separate pit shaft positioned at valve storehouse 13, wherein valve storehouse 13 and valve seat 14 are spliced to form main road cavity 11, valve
Storehouse 13 has branch accommodating chamber 12.In this way, convenient for the replacement to carrying out cleaning and its internal structural element in shell 10, simultaneously
It is also convenient for well mouth sealing device to connect with extraneous structural detail, improves the practicability of well mouth sealing device.
Optionally, in order to make easily assemble between valve seat 14 and valve storehouse 13, valve seat 14 is removably set
It sets on valve storehouse 13.
Preferably, main road cavity 11 is cylindric, a diameter of 75mm of main road cavity 11, and branch accommodating chamber 12 is cylinder
Shape, a diameter of 60mm of branch accommodating chamber 12.
As depicted in figs. 1 and 2, the inner surface of valve seat 14, which protrudes above, is provided with limiting section 50, and limiting section 50 has center
Through-hole 51, the aperture of central through hole 51 are less than the diameter for blocking element 30.In this way, after polished rod 1 is disconnected de-, blocks element 30 and enter
Main road cavity 11, and be compressed on limiting section 50 under the pressure effect of the fluid risen in pit shaft, it blocks element 30 and blocks
Firmly central through hole 51, to realize the sealing to well head.
Optionally, the surface of limiting section 50 being located at central through hole 51 is adapted with the outer surface for blocking element 30.
Preferably, it is in 45 degree of angles that the surface of limiting section 50 being located at central through hole 51, which is with the axis of central through hole 51,
Cyclic annular lozenges.
As shown in Fig. 2, valve storehouse 13 towards the screw thread being provided on the inner wall of main road cavity 11 for being connect with pit shaft
Structure 131, helicitic texture 131 are located at one end of the separate valve seat 14 in valve storehouse 13.In this way, further improving wellhead sealing
The convenience that device is connect with pit shaft.
As depicted in figs. 1 and 2, well mouth sealing device further includes baffle plate 60, and baffle plate 60 is arranged in main road cavity 11,
And baffle plate 60 is located at the side of the close well head of main road cavity 11 and the intersection point of branch accommodating chamber 12, baffle plate 60 has center
Via 61, the aperture of center via 61 are less than the diameter for blocking element 30.In this way, baffle plate 60 is played to blocking element 30
Backstop action avoids and blocks what first time of the element 30 after entering main road cavity 11 moved downward under gravity
Displacement is excessive, and well mouth sealing device is made to lose sealing function.
In the diagram embodiment of the application, for the ease of the maintenance or more to blocking element 30 and elastic element 40
It changes, blocks end 20 and shell 10 is detachably connected, and the junction of the two is provided with sealing ring.
Optionally, elastic element 40 is spring.
As depicted in figs. 1 and 2, branch accommodating chamber 12 is perpendicular to main road cavity 11.In this way, shell 10 is T-shaped, it is easy to process
Manufacture.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, attached shown in the drawings each
The size of a part is not to be drawn according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding
Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar
Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with
It need not be further discussed in attached drawing afterwards.
In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings
Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality
Do not indicate that and imply that signified device or element must have a particular orientation or with specific azimuth configuration and operation, because
This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself
Wide is inside and outside.
For ease of description, herein can with use space relative terms, as " ... on ", " in ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (be rotated by 90 ° or be in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Furthermore, it is necessary to which explanation, limits parts, it is only for be convenient for using the words such as " first ", " second "
Corresponding parts are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of utility model protection range.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or combination thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so that presently filed embodiment described herein can be in addition to illustrating herein
Or the sequence other than those of description is implemented.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (11)
1. a kind of well mouth sealing device, which is characterized in that the well mouth sealing device is arranged on the pit shaft at well head, when
Polished rod (1) in the pit shaft it is disconnected it is de- after, the well mouth sealing device for blocking the pit shaft, including：
Shell (10), the shell (10) have main road cavity (11) and branch accommodating chamber (12), wherein the main road cavity
(11) it is connected to the pit shaft, the main road cavity (11) is used to pass through for the polished rod (1), the branch accommodating chamber (12)
First end is connected to the main road cavity (11)；
It blocks end (20), second end of closure end (20) setting in the branch accommodating chamber (12)；
Element (30) and elastic element (40) are blocked, the closure element (30) and the elastic element (40) are arranged in the branch
In road accommodating chamber (12), wherein the elastic element (40) be located at the closure element (30) and the closure end (20) it
Between, so that it is contacted setting with the polished rod (1) to compress the closure element (30)；
It is described to block element (30) under the pressure effect of the elastic element (40) by described after the polished rod (1) is disconnected de-
Branch accommodating chamber (12) enters the main road cavity (11) and realizes the closure to the pit shaft.
2. well mouth sealing device according to claim 1, which is characterized in that the closure element (30) is spherical in shape, and is in
The hardness of the spherical closure element (30) is less than the hardness of the polished rod (1).
3. well mouth sealing device according to claim 2, which is characterized in that the shell (10) includes：
Valve storehouse (13)；
Valve seat (14), the valve seat (14) are arranged on the valve storehouse (13), and positioned at the remote of the valve storehouse (13)
One end from the pit shaft, wherein the valve storehouse (13) and the valve seat (14) are spliced to form the main road cavity (11),
The valve storehouse (13) has the branch accommodating chamber (12).
4. well mouth sealing device according to claim 3, which is characterized in that the valve seat (14) is removably disposed in
On the valve storehouse (13).
5. well mouth sealing device according to claim 3, which is characterized in that the inner surface of the valve seat (14) protrudes above
It is provided with limiting section (50), there is the limiting section (50) central through hole (51), the aperture of the central through hole (51) to be less than institute
State the diameter for blocking element (30).
6. well mouth sealing device according to claim 5, which is characterized in that the limiting section (50) is located at the center
Surface at through-hole (51) is adapted with the outer surface of the closure element (30).
7. well mouth sealing device according to claim 3, which is characterized in that the direction main road of the valve storehouse (13)
The helicitic texture (131) for being connect with the pit shaft is provided on the inner wall of cavity (11), the helicitic texture (131) is located at
One end far from the valve seat (14) of the valve storehouse (13).
8. well mouth sealing device according to claim 1, which is characterized in that the well mouth sealing device further includes baffle plate
(60), baffle plate (60) setting is in main road cavity (11), and the baffle plate (60) is located at the main road cavity (11)
With the intersection point of the branch accommodating chamber (12) close to the side of the well head, the baffle plate (60) has center via
(61), the aperture of the center via (61) is less than the diameter of the closure element (30).
9. well mouth sealing device according to claim 1, which is characterized in that the closure end (20) and the shell
(10) detachably connected, and the junction of the two is provided with sealing ring.
10. well mouth sealing device according to claim 1, which is characterized in that the elastic element (40) is spring.
11. well mouth sealing device according to claim 1, which is characterized in that the branch accommodating chamber (12) is perpendicular to institute
State main road cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721650843.1U CN207686657U (en) | 2017-11-30 | 2017-11-30 | Well mouth sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721650843.1U CN207686657U (en) | 2017-11-30 | 2017-11-30 | Well mouth sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207686657U true CN207686657U (en) | 2018-08-03 |
Family
ID=62999756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721650843.1U Active CN207686657U (en) | 2017-11-30 | 2017-11-30 | Well mouth sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207686657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886588A (en) * | 2018-09-11 | 2020-03-17 | 中国石油天然气股份有限公司 | Simple well mouth plugging tool for coal bed gas well |
-
2017
- 2017-11-30 CN CN201721650843.1U patent/CN207686657U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886588A (en) * | 2018-09-11 | 2020-03-17 | 中国石油天然气股份有限公司 | Simple well mouth plugging tool for coal bed gas well |
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