CN103993850A - Packing box - Google Patents
Packing box Download PDFInfo
- Publication number
- CN103993850A CN103993850A CN201310379136.3A CN201310379136A CN103993850A CN 103993850 A CN103993850 A CN 103993850A CN 201310379136 A CN201310379136 A CN 201310379136A CN 103993850 A CN103993850 A CN 103993850A
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- CN
- China
- Prior art keywords
- packing box
- sealed packing
- seal
- telescopic
- polished rod
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Abstract
The invention provides a packing box. The packing box comprises an upper fixed seal part, a lower connector and a retractable sleeve, the upper fixed seal part is fixed to a polished rod and comprises a seal packing box, seal packing and a pressing cap, wherein the polished rod can be sleeved with the seal packing box, the seal packing is arranged in the seal packing box, and the pressing cap can be used for pressing the seal packing into the seal packing box so that the seal packing and the polished rod can be fixedly sealed. The lower connector is used for being connected with a Christmas tree. The retractable sleeve can retract and stretch between the upper fixed seal part and the lower connector so that the distance between the upper fixed seal part and the lower connector can be changed. The first end of the retractable sleeve is connected with the seal packing box in a sealed mode, and the second end of the retractable sleeve is connected with the lower connector in a sealed mode. According to the packing box, a sliding seal part is not needed, the packing box will not be abraded, and therefore the service life of the packing box is greatly prolonged. Meanwhile, the labor amount of workers is reduced, and while the faults of an oil pumping system are reduced, a lot of oil pumping machine electric energy is saved.
Description
Technical field
The present invention relates to oil extraction in oil field well head accessory technical field, relate in particular to a kind of non-maintaining packing box that has wellhead sealing in bar oil recovery process.
Background technology
Packing box is a kind of pumping unit well mouth polish rod sealing device, plays the effect of the annular space between sealing oil pipe and polished rod in oil well course of normal operation.In the trouble-free situation of rod-pumped well, the problem that production wellhead is prone to is most exactly packing box leakage of oil.Although engineers and technicians have researched and developed various aligning packing boxes, along with oil pumper drives polished rod motion repeatedly up and down, polished rod and sealed packing long term wear, also will miss after packing box a period of time, need tighten again packing pressure cap.Owing to repeatedly tightening, the frictional force between sealed packing and polished rod strengthens, and oil pumper has been wasted a large amount of electric energy and removed to overcome the idle work that this frictional force produces.In addition, after tightening to a certain extent, tighten again inoperatively, at this moment need the oil pumper that stops, change sealed packing, increased workload.Main, stopping in well process, in the output oil in oil pipe, contained sand will sink, be sunken between oil pumping barrel and oil pump plunger piston, while starting for twice after more finishing changing packing box, card or wax card accident tend to shake out, whole oil well just need to trip out maintenance, and maintenance cost further strengthens.
Summary of the invention
The object of this invention is to provide a kind of packing box, when can greatly having extended the application life of packing box, alleviate workman's amount of labour, when reducing oil pumping system fault, also saved a large amount of oil pumper electric energy.
Technical scheme provided by the present invention is as follows:
A kind of packing box, described packing box comprises:
For fixing to the upper fixing seal portion on polished rod, fixed sealing comprises the sealed packing box that can be sheathed on polished rod, is arranged at the sealed packing in described sealed packing box and described sealed packing can be pressed in described sealed packing box, to make the fixing pressure cap of described sealed packing and polished rod seal;
For the lower contact being connected with well head production tree;
And, can between fixed sealing and described lower contact, stretch, to change the telescopic of distance between fixed sealing and described lower contact, the first end of described telescopic and described sealed packing box are tightly connected, and the second end and the described lower contact of described telescopic are tightly connected.
Further, the inside of described sealed packing box has one for holding the packing chamber of described sealed packing, the first end of described sealed packing box has an opening, and described sealed packing is arranged in described packing chamber, and described pressure cap is arranged at the opening part of described sealed packing box.
Further, described telescopic is the elastic tube of inner hollow, the edge of the surrounding outer rim of the first end port of described telescopic and the second end of described sealed packing box is tightly connected, and the surrounding outer rim of the second end port and the surrounding outer fringe seal of the first end of described lower contact of described telescopic are connected.
Further, described telescopic is ripple bourdon tube.
Further, the second end of described lower contact be can with the direct-connected tubing thread structure of production tree.
Beneficial effect of the present invention is as follows:
Packing box provided by the present invention can be installed on well head, polished rod is through upper seal holder part and lower contact, upper seal holder part and polished rod fixing seal, lower contact is connected with well head production tree, in the time that oil pumper drives polished rod repeatedly to move, telescopic can stretch and change the distance between upper seal holder part and lower contact, thereby can not slide between sealed packing and polished rod, without sliding seal, packing box can not wear and tear, greatly extend the application life of packing box, simultaneously, alleviate workman's amount of labour, when reducing oil pumping system fault, also a large amount of oil pumper electric energy have been saved.
Brief description of the drawings
Fig. 1 is the structural representation of packing box provided by the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, the invention provides a kind of packing box, described packing box comprises:
For fixing to the upper fixing seal portion 100 on polished rod 10, fixed sealing 100 comprises the sealed packing box 101 that can be sheathed on polished rod 10, is arranged at the sealed packing 102 in described sealed packing box 101 and described sealed packing 102 can be pressed in described sealed packing box 101, to make described sealed packing 102 seal fixing pressure cap 103 with polished rod 10;
For the lower contact 200 being connected with well head production tree;
And, can between fixed sealing 100 and described lower contact 200, stretch, to change the telescopic 300 of distance between fixed sealing 100 and described lower contact 200, the first end of described telescopic 300 and described sealed packing box 101 are tightly connected, and the second end and the described lower contact 200 of described telescopic 300 are tightly connected.
Packing box provided by the present invention, fixing seal portion 100 on it, lower contact 200 is sealed connected together by telescopic 300, upper fixing seal portion 100 is by pressure cap 103, sealed packing 102 and sealed packing box 101 form, when use, this packing box is arranged on to well head top, polished rod 10 is successively through lower contact 200, telescopic 300 and upper fixing seal portion 100, utilize pressure cap 103 that sealed packing 102 is pressed in sealed packing box 101, and sealed packing 102 and polished rod 10 are compressed, so that fixing seal portion 100 on this is positioned on polished rod 10, lower contact 200 is directly connected with well head production tree.In the time that oil pumper drives polished rod 10 up stroke, telescopic 300 extends; In the time that oil pumper drives polished rod 10 down stroke, telescopic 300 shortens, and back and forth carries out thus.
Due in the time that oil pumper drive polished rod 10 moves repeatedly, telescopic 300 can stretch, to change the distance between upper seal holder part and lower contact 200, thereby can not slide between sealed packing 102 and polished rod 10, without sliding seal, packing box can not wear and tear, miss, greatly extend the application life of packing box, meanwhile, alleviated workman's amount of labour, when reducing oil pumping system fault, a large amount of oil pumper electric energy are also saved.
As shown in Figure 1, in the present embodiment, preferred, the inside of described sealed packing box 101 has one for holding the packing chamber of described sealed packing 102, the first end of described sealed packing box 101 has an opening, and the second end of described sealed packing box 101 is offered the through hole for passing for polished rod 10; Described sealed packing 102 is arranged in described packing chamber, and described pressure cap 103 is arranged at the opening part of described sealed packing box 101, and the middle part of described sealed packing 102 and described pressure cap 103 also all has the hole of passing through for passing for polished rod 10.
It should be noted that, in actual applications, the structure of sealed packing box 101, sealed packing 102 and pressure cap 103 can be not limited in this, can be also other structures, will not enumerate at this.
In addition, in the present embodiment, preferably, the elastic tube that described telescopic 300 is inner hollow, the edge of the surrounding outer rim of the first end port of described telescopic 300 and the second end of described sealed packing box 101 is tightly connected, and the surrounding outer rim of the second end port and the surrounding outer fringe seal of the first end of described lower contact 200 of described telescopic 300 are connected.
Further preferred, described telescopic 300 be one can be flexible ripple bourdon tube.It should be noted that, in actual applications, telescopic 300 also can adopt the sleeve pipe structure that other can be flexible, can also be sleeve structure being formed by soft elastic body etc. such as telescopic 300, will not enumerate at this.
In addition, also it should be noted that, consider the bearing capacity of ripple bourdon tube, packing box provided by the present invention is particularly useful for the aboveground use of single tank of insufficient pressure 0.1Mpa, and the safety of its sealing is very reliable.In addition, consider freezed in winter, can in the inner chamber of ripple bourdon tube, fill stop-leak compound.
In addition, in the present embodiment, preferred, the second end of described lower contact 200 be can with the direct-connected tubing thread structure of production tree so that be connected with production tree.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a packing box, is characterized in that, described packing box comprises:
For fixing to the upper fixing seal portion on polished rod, fixed sealing comprises the sealed packing box that can be sheathed on polished rod, is arranged at the sealed packing in described sealed packing box and described sealed packing can be pressed in described sealed packing box, to make the fixing pressure cap of described sealed packing and polished rod seal;
For the lower contact being connected with production tree;
And, can between fixed sealing and described lower contact, stretch, to change the telescopic of distance between fixed sealing and described lower contact, the first end of described telescopic and described sealed packing box are tightly connected, and the second end and the described lower contact of described telescopic are tightly connected.
2. packing box according to claim 1, is characterized in that,
The inside of described sealed packing box has one for holding the packing chamber of described sealed packing, and the first end of described sealed packing box has an opening, and described sealed packing is arranged in described packing chamber, and described pressure cap is arranged at the opening part of described sealed packing box.
3. packing box according to claim 2, is characterized in that,
Described telescopic is the elastic tube of inner hollow, the edge of the surrounding outer rim of the first end port of described telescopic and the second end of described sealed packing box is tightly connected, and the surrounding outer rim of the second end port and the surrounding outer fringe seal of the first end of described lower contact of described telescopic are connected.
4. packing box according to claim 3, is characterized in that, described telescopic is ripple bourdon tube.
5. packing box according to claim 3, is characterized in that, the second end of described lower contact be can with the direct-connected tubing thread structure of production tree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379136.3A CN103993850A (en) | 2013-08-27 | 2013-08-27 | Packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379136.3A CN103993850A (en) | 2013-08-27 | 2013-08-27 | Packing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103993850A true CN103993850A (en) | 2014-08-20 |
Family
ID=51308158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310379136.3A Pending CN103993850A (en) | 2013-08-27 | 2013-08-27 | Packing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103993850A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503719A (en) * | 2017-09-29 | 2017-12-22 | 谢云琼 | A kind of nonpetroleum exploitation oil well pump |
| CN116717211A (en) * | 2023-08-10 | 2023-09-08 | 陕西斯锐明天智能设备有限公司 | Self-sealing packing box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066908U (en) * | 1990-04-28 | 1990-12-05 | 新疆石油管理局油田工艺研究所 | Polish rod sealing device for pumping machine without filling material |
| US20040051073A1 (en) * | 2000-11-07 | 2004-03-18 | Christian Estrems | Valve with sealed bellows and packing box for container transporting toxic fluids |
| CN101644148A (en) * | 2008-08-06 | 2010-02-10 | 大庆油田有限责任公司 | Non-smooth flexible rope corrugated pipe wellhead sealing device |
| CN201778723U (en) * | 2010-08-20 | 2011-03-30 | 中国石油天然气股份有限公司 | Deviation-regulating packing box moving with polish rod |
| CN203452717U (en) * | 2013-08-27 | 2014-02-26 | 托普威尔石油技术股份公司 | Packing box |
-
2013
- 2013-08-27 CN CN201310379136.3A patent/CN103993850A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066908U (en) * | 1990-04-28 | 1990-12-05 | 新疆石油管理局油田工艺研究所 | Polish rod sealing device for pumping machine without filling material |
| US20040051073A1 (en) * | 2000-11-07 | 2004-03-18 | Christian Estrems | Valve with sealed bellows and packing box for container transporting toxic fluids |
| CN101644148A (en) * | 2008-08-06 | 2010-02-10 | 大庆油田有限责任公司 | Non-smooth flexible rope corrugated pipe wellhead sealing device |
| CN201778723U (en) * | 2010-08-20 | 2011-03-30 | 中国石油天然气股份有限公司 | Deviation-regulating packing box moving with polish rod |
| CN203452717U (en) * | 2013-08-27 | 2014-02-26 | 托普威尔石油技术股份公司 | Packing box |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503719A (en) * | 2017-09-29 | 2017-12-22 | 谢云琼 | A kind of nonpetroleum exploitation oil well pump |
| CN116717211A (en) * | 2023-08-10 | 2023-09-08 | 陕西斯锐明天智能设备有限公司 | Self-sealing packing box |
| CN116717211B (en) * | 2023-08-10 | 2023-11-28 | 陕西斯锐明天智能设备有限公司 | Self-sealing packing box |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140820 |