CN217813386U - Blowout prevention polish rod sealer - Google Patents
Blowout prevention polish rod sealer Download PDFInfo
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- CN217813386U CN217813386U CN202222221709.7U CN202222221709U CN217813386U CN 217813386 U CN217813386 U CN 217813386U CN 202222221709 U CN202222221709 U CN 202222221709U CN 217813386 U CN217813386 U CN 217813386U
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- barrel
- packing
- upper barrel
- cavity
- branch pipe
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Abstract
The utility model relates to a polished rod sealer field specifically discloses a blowout prevention polished rod sealer, including upper barrel and lower barrel that can dismantle and link together, upper barrel and lower barrel are equipped with the polished rod passageway of axial intercommunication, be equipped with the packing chamber in the upper barrel, the packing has been placed in the packing chamber, be equipped with blowout prevention mechanism on the upper barrel; the blowout prevention mechanism comprises a branch pipe which is positioned on one side of the upper barrel and communicated with the upper barrel, an end cover is detachably connected to the outer side of the branch pipe, a sealing ball is placed in the branch pipe, a supporting spring is arranged between the sealing ball and the end cover, a sealing sleeve with a horn-shaped opening is arranged on the portion, located above the branch pipe, in the cavity of the upper barrel, and when the sealing ball is pushed into the upper barrel by the supporting spring, the sealing ball is matched with the sealing sleeve to seal a polished rod channel. The utility model discloses not only solve the problem of preventing spouting, can also avoid because the problem of the seepage that the sealed not tight leads to.
Description
Technical Field
The utility model relates to a polished rod sealing ware technical field, concretely relates to prevent spouting polished rod sealing ware.
Background
When the polished rod of the pumping unit works, the polished rod needs to reciprocate up and down in the polished rod sealer, sliding seal is formed between the polished rod sealer and the polished rod, when the polished rod breaks accidentally, oil in a well can gush out from a polished rod channel in the polished rod sealer, potential safety hazards are brought to surrounding operating personnel and later-period maintenance personnel, and meanwhile, the sprayed oil pollutes the surrounding environment;
publication No.: CN104405325A, which discloses a multifunctional polish rod sealer for pumping well, the working principle is to plug the polish rod channel by a seal body sliding horizontally;
however, in practical use, the structure discovers that the sealing body is in surface contact with the working cavity of the sealing body, the friction force is large, a certain gap is needed between the sealing body and the working cavity of the sealing body to ensure the transverse sliding smoothness of the sealing body, and the gap is a channel for oil liquid seeping out from the well.
Disclosure of Invention
The utility model aims at providing a to the defect that prior art exists, provide a prevent spouting polished rod sealing device, this structure when polished rod break off polished rod sealing device that meets accident, can take the initiative carry out closely shutoff with polished rod passage in the polished rod sealing device, this not only can prevent the fluid splash, can also effectually avoid because the problem of the sealed seepage that does not lead to strictly.
The technical scheme of the utility model is that:
a blowout prevention polish rod sealer comprises an upper cylinder body and a lower cylinder body which are detachably connected together, wherein the upper cylinder body and the lower cylinder body are provided with polish rod channels which are axially communicated;
a packing cavity is arranged in the upper barrel body, a packing is placed in the packing cavity, the packing is fixed in the packing cavity through the bottom of the upper barrel body, and a blowout prevention mechanism is arranged on the upper barrel body;
the blowout prevention mechanism comprises a branch pipe which is positioned on one side of the upper barrel and is communicated with the upper barrel, the outer side of the branch pipe is detachably connected with an end cover, a sealing ball is placed in the branch pipe, and a supporting spring is arranged between the sealing ball and the end cover;
the part of the cavity of the upper barrel body, which is positioned above the branch pipe, is provided with a sealing sleeve with a horn-shaped opening, and when the sealing ball is pushed into the upper barrel body by the supporting spring, the sealing ball is matched with the sealing sleeve to seal the polished rod channel.
Preferably, the lower cylinder is of a reducing structure with the inner diameter of the upper cavity larger than that of the lower cavity, and the upper cavity is the packing cavity.
Preferably, the top opening of barrel is equipped with the internal thread down, the bottom of going up the barrel is equipped with the external screw thread with the internal thread adaptation.
Preferably, the packing set is of a belt-shaped structure, and is spirally wound in the packing set cavity.
Preferably, a positioning column matched with the inner diameter of the supporting spring is coaxially arranged in the end cover.
Compared with the prior art, the utility model, have following advantage:
the utility model discloses when the polished rod breaks away from the polished rod sealing device that meets accident, can take the initiative carry out the shutoff with polished rod sealing device interior polished rod passageway, its inside horn shape open-ended seal cover structure, be convenient for guide ball sealer gets into the intracavity of seal cover, the outer peripheral face of the ball sealer of still being convenient for simultaneously and the inseparable laminating of inner wall of seal cover, sealed effect is better, not only solve the problem of preventing spouting, can also solve because the sealed seepage that does not lead to seriously, effectively avoid causing the problem to environmental pollution.
Through barrel and lower barrel threaded connection in the rotation to can produce pressure to the packing through last barrel bottom, thereby can the compaction packing, can adjust the frictional force between packing and the polished rod simultaneously, and this structure can also be applicable to the packing of different shapes or not unidimensional.
The end cover is internally and coaxially provided with a positioning column matched with the inner diameter of the supporting spring, and the supporting spring, the end cover and the sealing ball can be kept coaxially arranged by adding the positioning column, so that the supporting spring is prevented from being stressed and inclined in the branch pipe to generate the torsional deformation.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the present invention with a partially cut-away structure;
in the figure: 1. polished rod, 2, last barrel, 3, lower barrel, 4, bleeder, 5, end cover, 6, reference column, 7, supporting spring, 8, sealed ball, 9, packing, 10, seal cover.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1
Referring to fig. 1 and 2, the blowout-preventing polish rod sealer comprises an upper barrel body 2 and a lower barrel body 3 which are detachably connected together, wherein the upper barrel body 2 and the lower barrel body 3 are provided with polish rod 1 channels which are axially communicated.
Be equipped with the packing chamber in the last barrel 2, packing 9 has been placed to the packing intracavity to fix packing 9 in the packing intracavity through 2 bottoms of last barrel, be equipped with on the last barrel 2 and prevent spouting the mechanism.
The blowout prevention mechanism comprises a branch pipe 4 which is positioned on one side of the upper barrel body 2 and communicated with the upper barrel body 2, an end cover 5 is detachably connected to the outer side of the branch pipe 4, a sealing ball 8 is placed in the branch pipe 4, and a supporting spring 7 is arranged between the sealing ball 8 and the end cover 5.
The part of the cavity of the upper cylinder 2, which is positioned above the branch pipe 4, is provided with a sealing sleeve 10 with a horn-shaped opening, and when the supporting spring 7 pushes the sealing ball 8 into the upper cylinder 2, the sealing ball 8 is matched with the sealing sleeve 10 to seal the channel of the polish rod 1.
The working principle is as follows:
when the polish rod 1 normally works, the polish rod 1 is positioned in a polish rod 1 channel in the upper barrel 2 and the lower barrel 3 to do up-and-down reciprocating motion, a sliding seal is formed between the packing 9 and the polish rod 1, the sealing ball 8 is contacted with the polish rod 1 under the action of the supporting spring 7, the sealing ball 8 is in point contact with the polish rod 1, the friction force generated between the sealing ball and the polish rod 1 is very small, and the problem that the polish rod 1 is abraded due to the fact that the contact surface between a sealing body and the polish rod 1 in a traditional structure is large is solved;
when the polish rod 1 is broken, the polish rod 1 is separated from the channel of the polish rod 1, the supporting spring 7 is elastically extended to push the sealing ball 8 into the cavity of the upper cylinder body 2, then the sealing ball 8 is pushed upwards into the sealing sleeve 10 by oil liquid gushing upwards from the channel of the polish rod 1, and the sealing ball 8 is matched with the sealing sleeve 10 to plug the channel of the polish rod 1, so that the function of active plugging and blowout prevention when the polish rod 1 is broken is realized.
Through flared opening's seal cover 10 structure, be convenient for guide sealing ball 8 gets into the intracavity of seal cover 10, the inseparable laminating of the outer peripheral face of the sealing ball 8 of still being convenient for simultaneously and the inner wall of seal cover 10, sealed effect is better, not only solves the problem of preventing spouting, can also solve because the seepage that the sealed not tight leads to effectively avoids causing environmental pollution's problem.
Example 2
The embodiment is further optimized on the basis of the embodiment 1, and specifically comprises the following steps:
the lower barrel 3 is of a reducing structure with the inner diameter of the upper cavity larger than that of the lower cavity, and the upper cavity is a packing cavity, and the reducing part forms a step surface at the bottom of the bearing tray root 9.
An internal thread is arranged at the opening at the top of the lower barrel 3, an external thread matched with the internal thread is arranged at the bottom of the upper barrel 2, when the upper barrel 2 is screwed into the lower barrel 3, the bottom of the upper barrel 2 can enter the cavity of the lower barrel 3, so that the packing 9 can be compacted, and the structure can be suitable for packing 9 in different shapes or sizes;
in addition, the pressure generated by the bottom of the upper barrel 2 on the packing 9 can be adjusted by rotating the upper barrel 2, so that the friction force between the packing 9 and the polish rod 1 can be adjusted.
Example 3
The embodiment is further optimized on the basis of the embodiment 1 or the embodiment 2, and specifically comprises the following steps:
the end cover 5 is internally coaxially provided with a positioning column 6 matched with the inner diameter of the supporting spring 7, and the supporting spring 7, the end cover 5 and the sealing ball 8 can be kept coaxially arranged by adding the positioning column 6, so that the supporting spring 7 is prevented from being stressed and inclined in the branch pipe 4 to generate torsional deformation.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the spirit of the present invention, and the changed contents still belong to the protection scope of the present invention.
Claims (5)
1. The utility model provides a prevent spouting polish rod sealing ware, includes can dismantle last barrel and lower barrel that links together, it is equipped with the polish rod passageway of axial intercommunication, its characterized in that to go up the barrel and be equipped with down the barrel:
a packing cavity is arranged in the upper barrel body, a packing is placed in the packing cavity, the packing is fixed in the packing cavity through the bottom of the upper barrel body, and a blowout prevention mechanism is arranged on the upper barrel body;
the blowout prevention mechanism comprises a branch pipe which is positioned on one side of the upper barrel and is communicated with the upper barrel, the outer side of the branch pipe is detachably connected with an end cover, a sealing ball is placed in the branch pipe, and a supporting spring is arranged between the sealing ball and the end cover;
the part of the cavity of the upper barrel body, which is positioned above the branch pipe, is provided with a sealing sleeve with a horn-shaped opening, and when the sealing ball is pushed into the upper barrel body by the supporting spring, the sealing ball is matched with the sealing sleeve to seal the polished rod channel.
2. The blowout preventing rod sealer of claim 1, wherein: the lower cylinder is of a reducing structure with the inner diameter of the upper cavity larger than that of the lower cavity, and the upper cavity is the packing cavity.
3. The blowout preventing rod sealer of claim 1, wherein: the top opening part of barrel is equipped with the internal thread down, the bottom of going up the barrel is equipped with the external screw thread with the internal thread adaptation.
4. The blowout preventing rod sealer of claim 1, wherein: the packing is of a belt-shaped structure and is spirally wound in the packing cavity.
5. The blowout preventing polished rod sealer of claim 1, wherein: and a positioning column matched with the inner diameter of the supporting spring is coaxially arranged in the end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222221709.7U CN217813386U (en) | 2022-08-23 | 2022-08-23 | Blowout prevention polish rod sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222221709.7U CN217813386U (en) | 2022-08-23 | 2022-08-23 | Blowout prevention polish rod sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217813386U true CN217813386U (en) | 2022-11-15 |
Family
ID=83976197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222221709.7U Active CN217813386U (en) | 2022-08-23 | 2022-08-23 | Blowout prevention polish rod sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217813386U (en) |
-
2022
- 2022-08-23 CN CN202222221709.7U patent/CN217813386U/en active Active
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