CN203452717U - Packing box - Google Patents
Packing box Download PDFInfo
- Publication number
- CN203452717U CN203452717U CN201320526538.7U CN201320526538U CN203452717U CN 203452717 U CN203452717 U CN 203452717U CN 201320526538 U CN201320526538 U CN 201320526538U CN 203452717 U CN203452717 U CN 203452717U
- Authority
- CN
- China
- Prior art keywords
- packing box
- sealing
- sealed packing
- telescopic
- polished rod
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides a packing box, comprising an upper fixed sealing part which is fixed on a polished rod, a lower joint which is connected with a Christmas tree and a telescopic sleeve, wherein the upper fixed sealing part comprises a sealing packing box, a sealing packing and a pressing cap; the sealing packing box is capable of being sleeved on the polished rod; the sealing packing is arranged in the sealing packing box; the pressing cap is capable of pressing the sealing packing in the sealing packing box to fix the sealing packing and the polished rod in a sealing way; the telescopic sleeve is telescopic between the upper fixed sealing part and the lower joint so as to change the distance between the upper fixed sealing part and the lower joint; the first end of the telescopic sleeve is connected with the sealing packing box in a sealing way; the second end of the telescopic sleeve is connected with the lower joint in a sealing way. According to the packing box, a sealing piece does not need to be slidden, the packing box cannot be worn, the service life of the packing box is greatly prolonged, the labor amount of workers is relieved, the faults of an oil pumping system are reduced, and a great amount of electric energy of an oil pumping machine is saved.
Description
Technical field
The utility model relates to oil extraction in oil field well head accessory technical field, relates 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, packing box also will be missed after 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, in stopping 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.
Utility model content
The purpose of this utility model is to provide a kind of packing box, when can greatly extend the application life of packing box, alleviates workman's amount of labour, when reducing oil pumping system fault, has also saved a large amount of oil pumper electric energy.
Technical scheme provided by the utility model is as follows:
A 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, so that 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.
The beneficial effects of the utility model are as follows:
Packing box provided by the utility model 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, when 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 extended 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.
Accompanying drawing explanation
Fig. 1 is the structural representation of packing box provided by the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, the utility model provides a kind of packing box, and 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, so that the fixing pressure cap 103 of described sealed packing 102 and polished rod 10 sealings;
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 utility model, 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, during 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.When oil pumper drives polished rod 10 up stroke, telescopic 300 extends; When oil pumper drives polished rod 10 down stroke, telescopic 300 shortens, and back and forth carries out thus.
Due to when 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 have also been 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, at this, will not enumerate.
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, at this, will not enumerate.
In addition, also it should be noted that, consider the bearing capacity of ripple bourdon tube, packing box provided by the utility model 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 with 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 preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
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, so that 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 |
|---|---|---|---|
| CN201320526538.7U CN203452717U (en) | 2013-08-27 | 2013-08-27 | Packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320526538.7U CN203452717U (en) | 2013-08-27 | 2013-08-27 | Packing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203452717U true CN203452717U (en) | 2014-02-26 |
Family
ID=50132601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320526538.7U Expired - Lifetime CN203452717U (en) | 2013-08-27 | 2013-08-27 | Packing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203452717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993850A (en) * | 2013-08-27 | 2014-08-20 | 托普威尔石油技术股份公司 | Packing box |
-
2013
- 2013-08-27 CN CN201320526538.7U patent/CN203452717U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993850A (en) * | 2013-08-27 | 2014-08-20 | 托普威尔石油技术股份公司 | Packing box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203926221U (en) | Cushion cylinder | |
| CN203452717U (en) | Packing box | |
| CN103993850A (en) | Packing box | |
| CN208066654U (en) | A kind of fastening device for adhesive dispensing robot injection valve | |
| CN204240024U (en) | Energy-saving grease adding instrument | |
| CN103821479B (en) | The device of force feed layer function not while thering is well hot washing | |
| CN203297087U (en) | Efficient protective oil pumping device | |
| CN203362101U (en) | Blowout preventer for continuous sucker rod | |
| CN202970588U (en) | Pumping well polished rod sealing device enabling sealing piece to be conveniently taken out | |
| CN203978325U (en) | A kind of anti-sucker rod offset assembly | |
| CN202970592U (en) | Lubricated polish rod sealer | |
| CN202832349U (en) | Stuffing box | |
| CN204827326U (en) | Multistage packing box of beam -pumping unit | |
| CN202348202U (en) | Multifunctional polish rod sealer | |
| CN203729940U (en) | Follow-up type wellhead sealing device under pressure | |
| CN204113178U (en) | Oil pump energy-saving environment-protective sealing system | |
| CN205225157U (en) | Blowout preventer for long string | |
| CN203412543U (en) | Wellhead blowout control and antifouling device | |
| CN201826803U (en) | Lubricator for polish rod of pumping well | |
| CN201280907Y (en) | Polished rod lubricator of jack well | |
| CN204754851U (en) | Wear -resisting packing box of tuningout | |
| CN202391393U (en) | Novel bailing type barrel oil pump | |
| CN202690087U (en) | Hydraulic prop with long stroke | |
| CN201756941U (en) | Mechanical releasing shallow-shaft tubing plug | |
| CN203847035U (en) | Multifunctional wellhead protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |