CN201620800U - Wellhead sealing device - Google Patents
Wellhead sealing device Download PDFInfo
- Publication number
- CN201620800U CN201620800U CN2010201067519U CN201020106751U CN201620800U CN 201620800 U CN201620800 U CN 201620800U CN 2010201067519 U CN2010201067519 U CN 2010201067519U CN 201020106751 U CN201020106751 U CN 201020106751U CN 201620800 U CN201620800 U CN 201620800U
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- elastic component
- sealing device
- well mouth
- mouth sealing
- going
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- Expired - Fee Related
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Abstract
The utility model relates to a wellhead sealing device, which comprises a sealing body and a deviation adjusting device connected with the sealing body. The sealing body comprises a shell. Glands for penetrating a polished rod, a supporting ring, an upper elastic piece and a lower elastic piece matched with the upper elastic piece are arranged in the shell. The internal part of the upper elastic piece and the lower elastic piece is a cavity in which the supporting ring is arranged. Moreover, the upper elastic piece and the lower elastic piece are arranged in a crossing way and are arranged between the two glands. By adopting the wellhead sealing device, not only the device can use the pressure of wellhead liquid for sealing compensation, but also the supporting ring can effectively protect an elastic body. Besides, since the friction coefficient of the supporting ring is small, the generated heat and the wear are ensured to be low, the overall service life of packing is prolonged to the ultimate extent when the energy is saved, the overall structure is simple and the reliability is high.
Description
Technical field
The utility model relates to sealing device, relates in particular to a kind of oil pumper well head in the oil recovery field, oil field and the sealing device of polished rod.
Background technology
Packing box is the sealing device of a kind of oil pumper well head and polished rod, plays the effect of sealing oil pipe and polished rod annular space in the oil well normal productive process.At present, the packing of using on the well mouth sealing device commonly used is old-fashioned rubber packing, perhaps uses the V-belt to seal.Its shortcoming is: on the one hand, in process of production, because frequent tight packing inevitably causes packing at the unbalance stress of polished rod on week, the situation that especially adds the V-belt is even more serious.This packing contacts with the inhomogeneous of polished rod, causes the generation of eccentric wear situation, the phenomenon of a side leakage oil occurs.And this oil leakage phenomenon is once occur, will be more and more obvious, and, even also can not get improving by frequent stepping up; On the other hand, because present packing material major part all is the material of rubber or class rubber, this makes that the contact friction force of packing and polished rod is bigger, and this friction directly translates into a large amount of frictional heats and generates.And a large amount of heat can make and the too fast wearing and tearing of packing, aging causes too early inefficacy at last, and in addition, this superheating phenomenon also has a negative impact to the overlay coating of polished rod simultaneously, shortens the life-span of polished rod.
The utility model content
The technical problems to be solved in the utility model provide a kind of simple in structure, good airproof performance, not easy to wear, reliability is high, can effectively overcome the well mouth sealing device that eccentric wear causes oily vapour leakage phenomenon, can effectively prolong the application life of polished rod.
Goal of the invention of the present utility model is achieved through the following technical solutions:
A kind of well mouth sealing device, it comprises seal and the deviation correcting device that is connected with described seal.Described seal comprises shell, is provided with pressure cap, the support ring that supplies polished rod to wear, the following elastic component of going up elastic component and mating with described upward elastic component in the described shell.Wherein, described elastic component and the following elastic component hollow of going up is provided with described support ring in it, and, described last elastic component and following elastic component cross arrangement, be arranged between two pressure caps.
Above-mentioned well mouth sealing device, wherein: the described axial section of going up elastic component and following elastic component is down " eight " font.
Above-mentioned well mouth sealing device, wherein: the described elastic component of going up is respectively equipped with stepped through hole with following elastic component, and described support ring is arranged at the maximum diameter of hole part of this through hole, and described polished rod is arranged at the minimum-value aperture part of this through hole.
Above-mentioned well mouth sealing device, wherein: described support ring and described elastic component, the following elastic component interference fit of going up.
Above-mentioned well mouth sealing device, wherein: described polished rod and described elastic component, the following elastic component interference fit of going up.
Above-mentioned well mouth sealing device, wherein: described upward elastic component, following elastic component are rubber.
Above-mentioned well mouth sealing device, wherein: the center line of described support ring, last elastic component, following elastic component, polished rod, pressure cap overlaps.
Above-mentioned well mouth sealing device, wherein: also comprise the loam cake that is connected with cover top portion.
Above-mentioned well mouth sealing device, wherein: described gap of going up elastic component and following elastic component also is filled with the butter of the coefficient of reducing friction.
Above-mentioned well mouth sealing device, wherein: described deviation correcting device comprises joint, the gland that is connected with described joint screw thread, order is placed on upper sealing ring, bulb body and the lower sealing ring in the described gland; One end of described bulb body stretches out described gland, is connected with outer casing bottom.
Well mouth sealing device of the present utility model by last elastic body, following cooperating between elastic body and the support ring, has both guaranteed that this device can utilize the well head fluid pressure to carry out sealing compensation, has realized that again support ring is to elastomeric effective protection.In addition, because the low-friction coefficient of support ring has guaranteed the generation of low-heat and the generation of low wearing and tearing, the prolongation packing whole service life of maximum in energy-conservation, the while effectively prolongs the application life of polished rod.Whole device overall structure is simple, and the reliability height can effectively overcome eccentric wear and cause oily vapour leakage phenomenon, has exempted the problem that the well head packing need frequently compress and change up hill and dale, has reached energy-conservation and the non-maintaining purpose of well head.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is the sectional structure schematic diagram of well mouth sealing device of the present utility model.
The specific embodiment
Figure 1 shows that the sectional structure schematic diagram of well mouth sealing device of the present utility model.This well mouth sealing device comprises seal and the deviation correcting device that is connected with seal.Wherein, seal comprises shell 10, and shell 10 tops are connected with loam cake 11, is provided with the pressure cap 12, the support ring 13 that wear for polished rod 20, the following elastic component 15 of going up elastic component 14 and mating with last elastic component 14 in the shell 10.In the utility model embodiment, last elastic component 14 and following elastic component 15 hollows are provided with this support ring 13 in it, and, last elastic component 14 and following elastic component 15 cross arrangements, be arranged between two pressure caps 12.
Specifically, last elastic component 14 is down " eight " font with the axial section of following elastic component 15; Adopt the elastomeric design of " eight " font, the week that makes thrust can be evenly distributed in polished rod 20 makes progress, and is stressed even.That is,, vertical pressure evenly is converted into the peripheral force of level from the mechanics angle analysis.Simultaneously, also utilized the fluid pressure of well head to carry out the self compensation adjusting: fluid pressure acts on down below " eight " font elastic body, the effect of this pressure at right angle can be converted into the peripheral force of level by falling " eight " font elastic body, reaches and circumferentially the holding tightly of polished rod.
Again, last elastic component 14 is respectively equipped with stepped through hole with following elastic component 15.Support ring 13 is arranged at the maximum diameter of hole part of this through hole, and polished rod 20 is arranged at the minimum-value aperture part of this through hole.In the utility model embodiment, support ring 13 and last elastic component 14, following elastic component 15 interference fit; Polished rod 20 and last elastic component 14, following elastic component 15 interference fit; Adopt the structure of interference fit, help improving sealing effectiveness.In addition, last elastic component 14, following elastic component 15 are rubber.Utilized the spring function of rubber, simultaneously, also utilized lower friction number of support ring and wear-resisting characteristic, made in the maximum simultaneously prolongation of the effect that reaches sealing the life-span of packing.
In the utility model embodiment, the center line of support ring 13, last elastic component 14, following elastic component 15, polished rod 20, pressure cap 12 overlaps.In addition, the gap of last elastic component 14 and following elastic component 15 also is filled with the butter of the coefficient of reducing friction (indicating among the figure), plays the protection packing, reduces the effect that rubs, weares and teares.
Deviation correcting device comprises joint 30, the gland 31 that is threaded with joint 30, and order is placed on upper sealing ring 32, bulb body 33 and the lower sealing ring 34 in the gland 31.Wherein, an end of bulb body 33 stretches out gland 31, is connected with shell 10 bottoms, and deviation correcting device and weather strip are integrated.Bulb body 33 is used for seal is carried out the tuningout of certain limit: utilize the universal structure of bulb body 33, make seal to move within the specific limits with moving of polished rod 20, realized the function of imitative eccentric wear.In the utility model embodiment, bulb body 33 is fixing by being threaded with shell 10.
The assembling of the well mouth sealing device of the utility model embodiment is as follows: at first carry out the assembling of deviation correcting device, lower sealing ring 34 is contained in the top of joint 30, put bulb body 33 and upper sealing ring 32 successively, at last gland 31 is connected with joint 30 by screw thread, finish the installation of deviation correcting device; Secondly, carry out the assembling of seal, support ring 13 and last elastic body 14 are assembled into one group with following elastic body 15, again at the upper/lower terminal configuration pressure cap 12 of three groups of assemblies of this structure that assembles, and in the shell 10 of together packing into, connect with shell 10 by loam cake 11 then, finish the installation of seal; At last, the seal that assembles and the deviation correcting device screw thread by bulb body 33 is connected and fixed.During application, only need polished rod 20 is passed this well mouth sealing device, again well mouth sealing device is connected with the oil pumper well head, can normally move.
Therefore, well mouth sealing device of the present utility model by last elastic body, following cooperating between elastic body and the support ring, has both guaranteed that this device can utilize the well head fluid pressure to carry out sealing compensation, has realized that again support ring is to elastomeric effective protection.In addition, because the low-friction coefficient of support ring has guaranteed the generation of low-heat and the generation of low wearing and tearing, the prolongation packing whole service life of maximum in energy-conservation, the while effectively prolongs the application life of polished rod.Whole device overall structure is simple, and the reliability height can effectively overcome eccentric wear and cause oily vapour leakage phenomenon, has exempted the problem that the well head packing need frequently compress and change up hill and dale, has reached energy-conservation and the non-maintaining purpose of well head.
The specific embodiment of the above is a better embodiment of the present utility model; be not to limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this specific embodiment, and the equivalence that all shapes according to the utility model, structure are done changes and all comprises in the protection domain of the present utility model.
Claims (10)
1. well mouth sealing device, it comprises seal and the deviation correcting device that is connected with described seal, it is characterized in that described seal comprises shell, be provided with pressure cap, the support ring that supplies polished rod to wear, the following elastic component of going up elastic component and mating in the described shell with described upward elastic component; Wherein, described elastic component and the following elastic component hollow of going up is provided with described support ring in it, and, described last elastic component and following elastic component cross arrangement, be arranged between two pressure caps.
2. well mouth sealing device according to claim 1 is characterized in that, the described axial section of going up elastic component and following elastic component is down " eight " font.
3. well mouth sealing device according to claim 1 is characterized in that, the described elastic component of going up is respectively equipped with stepped through hole with following elastic component, and described support ring is arranged at the maximum diameter of hole part of this through hole, and described polished rod is arranged at the minimum-value aperture part of this through hole.
4. well mouth sealing device according to claim 3 is characterized in that, described support ring and described elastic component, the following elastic component interference fit of going up.
5. well mouth sealing device according to claim 3 is characterized in that, described polished rod and described elastic component, the following elastic component interference fit of going up.
6. well mouth sealing device according to claim 1 is characterized in that, described upward elastic component, following elastic component are rubber.
7. well mouth sealing device according to claim 1 is characterized in that, the center line of described support ring, last elastic component, following elastic component, polished rod, pressure cap overlaps.
8. well mouth sealing device according to claim 1 is characterized in that, also comprises the loam cake that is connected with cover top portion.
9. well mouth sealing device according to claim 1 is characterized in that, described gap of going up elastic component and following elastic component also is filled with the butter of the coefficient of reducing friction.
10. according to any described well mouth sealing device of claim 1 to 9, it is characterized in that described deviation correcting device comprises joint, the gland that is connected with described joint screw thread, order is placed on upper sealing ring, bulb body and the lower sealing ring in the described gland; One end of described bulb body stretches out described gland, is connected with outer casing bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201067519U CN201620800U (en) | 2010-01-28 | 2010-01-28 | Wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201067519U CN201620800U (en) | 2010-01-28 | 2010-01-28 | Wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201620800U true CN201620800U (en) | 2010-11-03 |
Family
ID=43024256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201067519U Expired - Fee Related CN201620800U (en) | 2010-01-28 | 2010-01-28 | Wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201620800U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104583498A (en) * | 2012-07-06 | 2015-04-29 | 达科兹法国公司 | Device for covering a pipeline from a wellbore |
| CN108708684A (en) * | 2018-05-25 | 2018-10-26 | 淮安市井神钻采机具有限公司 | Do not stop to be drawn from dynamic compensation polished rod sealer |
-
2010
- 2010-01-28 CN CN2010201067519U patent/CN201620800U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104583498A (en) * | 2012-07-06 | 2015-04-29 | 达科兹法国公司 | Device for covering a pipeline from a wellbore |
| CN104583498B (en) * | 2012-07-06 | 2016-12-21 | 达科兹法国公司 | For covering the device of the pipeline from well |
| CN108708684A (en) * | 2018-05-25 | 2018-10-26 | 淮安市井神钻采机具有限公司 | Do not stop to be drawn from dynamic compensation polished rod sealer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20120128 |