CN207673311U - In-pipe composite sealing mechanism - Google Patents
In-pipe composite sealing mechanism Download PDFInfo
- Publication number
- CN207673311U CN207673311U CN201721712171.2U CN201721712171U CN207673311U CN 207673311 U CN207673311 U CN 207673311U CN 201721712171 U CN201721712171 U CN 201721712171U CN 207673311 U CN207673311 U CN 207673311U
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- China
- Prior art keywords
- sealing mechanism
- sealing
- central tube
- compound
- elastic metallic
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- 238000007789 sealing Methods 0.000 title claims abstract description 69
- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title abstract 4
- 150000001875 compounds Chemical class 0.000 claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract 5
- 230000009466 transformation Effects 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010016766 flatulence Diseases 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model discloses an intraductal composite seal mechanism, including the center tube, the middle part of this center tube has been seted up along its axial and has been led the pressure seam, the both ends difference cover of this center tube is equipped with top connection and lower clutch, middle part suit has the elastic metal seal cover, and between elastic metal seal cover and top connection and the center tube, and all overlap between elastic metal seal cover and lower clutch and the center tube and be equipped with the support ring, the outside of every support ring all is provided with an annular axle, every annular axle equal swing joint has a protective sheath that is used for compressing tightly elastic metal seal cover both ends, in addition, form annular distribution's hydraulic pressure chamber between center tube and elastic metal seal cover. The composite sealing mechanism in the pipe is designed with the composite sealing mechanism, so that the sealing reliability can be ensured, and the repeated sealing performance of the sealing tool is improved. The utility model provides a pair of intraductal compound seal mechanism has sealed reliable, characteristics such as easy and simple to handle, can be used to oil, gas field transformation technical process intraductal demand that seals at a distance from.
Description
Technical field
The utility model belongs to petroleum-gas fiedl renovation technique field, and in particular to compound sealing mechanism in a kind of pipe.
Background technology
Currently, packer body is based on rubber seal mechanism in oil, casing, by adjusting rubber hardness, realize to oil, set
Sealing in pipe.It has many advantages, such as that mechanism maturation, sealed reliable, cost are relatively low.But with the hair of petroleum-gas fiedl wellbore technologies
Exhibition repeats leakproofness and is difficult to meet field demand, and when sealing is repeated several times, sealing performance is insufficient, easily causes mistake envelope；Sealing is not
Same position seals again after mobile, easily leads to rubber breakage, falls off, causes the operating risks such as bit freezing.
Therefore, it is necessary to provide compound sealing mechanism in a kind of new pipe, drawbacks described above is overcome.
Utility model content
The purpose of this utility model is to provide compound sealing mechanisms in a kind of pipe, can be realized in operation process
Sealing mechanism repeatedly effectively seals, abatement mechanism breakage risk.
In order to achieve the above objectives, the utility model is realized using following technical proposal：
The middle part of compound sealing mechanism in a kind of pipe, including central tube, the central tube offers pilot seam along its axial direction, should
The both ends of central tube are respectively installed with top connection and lower contact, and middle part is set with elastic metallic sealing shroud, and elastic metallic seals
It is set with support ring between set and top connection and central tube and between elastic metallic sealing shroud and lower contact and central tube,
It is respectively provided on the outside of each support ring there are one annular shaft, each annular shaft be flexibly connected that there are one be used to compress elastic metallic
The protective case at sealing shroud both ends, in addition, forming the hydraulic cavities of annular spread between central tube and elastic metallic sealing shroud.
The utility model, which further improves, to be, the quantity of pilot seam has 6, and along circumferential uniform point of central tube
Cloth.
The utility model, which further improves, to be, if offering dry seal in the external circumferential of elastic metallic sealing shroud
Slot, and it is respectively provided with that there are one sealing rings in each seal groove.
The utility model, which further improves, to be, when work, compound sealing mechanism is arranged in casing in the pipe.
The utility model, which further improves, to be, the slit width of pilot seam is less than 0.335mm.
The utility model, which further improves, to be, the length of pilot seam is less than the length 100mm of elastic metallic sealing shroud.
The utility model has following advantageous effect：
1, the utility model compound sealing mechanism is used through hydraulic starting, has position limiting structure, eliminates sealing element interference
Damage, and reset easy to operate.
2, the utility model compound sealing mechanism seal process is simple, and repetition workability is strong,
3, the utility model compound sealing mechanism uses elastic metallic and the difunctional sealing of sealing ring, sealed reliable.
Description of the drawings
Fig. 1 is the structural profile illustration of compound sealing mechanism in a kind of pipe of the utility model.
The structural schematic diagram of pipe centered on Fig. 2.
Fig. 3 is the side view of Fig. 2.
Fig. 4 is that compound sealing mechanism insulates schematic diagram in a kind of pipe of the utility model.
In figure：1- top connections, 2- annular shafts, 3- protective cases, 4- elastic metallic sealing shrouds, 5- sealing rings, 6- pilots seam, 7-
Central tube, 8- support rings, 9- lower contacts, 10- casings.
Specific implementation mode
The utility model is made further instructions below in conjunction with attached drawing.
Refering to fig. 1 to Fig. 4, compound sealing mechanism in a kind of pipe provided by the utility model, including top connection 1, annular shaft
2, protective case 3, elastic metallic sealing shroud 4, sealing ring 5, pilot seam 6, central tube 7, support ring 8 and lower contact 9.Support ring 8 is right
Claim the annular shaft 2, sealing ring 5 and the elastic metallic sealing shroud 4 that are installed on compound sealing mechanism both ends.
The slit width of pilot seam 6 is less than 0.335mm, prevents sand grains from entering hydraulic cavities.The length of pilot seam 6 is less than elastic metallic
The length 100mm or more of sealing shroud 4 ensures sealing performance.5 unilateral interference of sealing ring 0.55.
Typical seal is using nitrile rubber (hydrogenation nitrile rubber), and 150 DEG C of heatproof is hereinafter, shore hardness 70-90, tension
Intensity 30MPa or so.It must be provided with rubber protection mechanism when sealing, it is higher for sealing mechanism design requirement, and rubber exists
It is poor to repeat leakproofness, easy situations such as damaging.Elastic metallic can tolerate high temperature, and tensile strength is up to 200MPa or more, tool
There is preferable elasticity, wear-resisting property is better than rubber, and the utility model is using elastic metallic sealing and rubber seal double containment
Design, structure design is simple, and sealing performance is more reliable.
The operation principle of compound sealing mechanism is as follows in a kind of pipe provided by the utility model：
Tube fluid enters the hydraulic cavities of compound sealing mechanism by pilot seam 6, and elastic metallic sealing shroud 4 is by fluid compression
Radially outer tympanites, while protective case 3 turns up along annular shaft 2 to top connection 1 and 9 direction of lower contact, is connect until reaching
First 1 and lower contact 9 limit end face.Elastic metallic sealing shroud 4 continues radially outer tympanites, until 5 Seal Oil of sealing ring, set
Inside pipe wall completes the difunctional sealing operation of elastic metallic sealing shroud 4 and sealing ring 5.After the completion of operation, interior pressure release, hydraulic pressure are managed
Cavity fluid self-conductance tooled joint 6 flows out, and compound sealing mechanism is reset to initial position.
Claims (6)
1. compound sealing mechanism in a kind of pipe, which is characterized in that including central tube (7), the middle part of the central tube (7) is along its axial direction
Pilot seam (6) is offered, the both ends of the central tube (7) are respectively installed with top connection (1) and lower contact (9), and middle part is set with bullet
Property metallic sleeve gasket (4), and between elastic metallic sealing shroud (4) and top connection (1) and central tube (7) and elastic metallic is close
It is set with support ring (8) between big envelope (4) and lower contact (9) and central tube (7), is respectively provided on the outside of each support ring (8)
There are one annular shaft (2), each annular shaft (2) be flexibly connected that there are one be used to compress elastic metallic sealing shroud (4) both ends
Protective case (3), in addition, forming the hydraulic cavities of annular spread between central tube (7) and elastic metallic sealing shroud (4).
2. compound sealing mechanism in a kind of pipe according to claim 1, which is characterized in that the quantity of pilot seam (6) has 6
It is a, and be uniformly distributed along the circumferential direction of central tube (7).
3. compound sealing mechanism in a kind of pipe according to claim 1, which is characterized in that elastic metallic sealing shroud (4)
It offers several seal grooves in external circumferential, and is respectively provided with that there are one sealing rings (5) in each seal groove.
4. compound sealing mechanism in a kind of pipe according to claim 1, which is characterized in that compound close in the pipe when work
Sealing mechanism setting is in casing (10).
5. compound sealing mechanism in a kind of pipe according to claim 1, which is characterized in that the slit width of pilot seam (6) is less than
0.335mm。
6. compound sealing mechanism in a kind of pipe according to claim 1, which is characterized in that the length of pilot seam (6) is less than
The length 100mm of elastic metallic sealing shroud (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721712171.2U CN207673311U (en) | 2017-12-11 | 2017-12-11 | In-pipe composite sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721712171.2U CN207673311U (en) | 2017-12-11 | 2017-12-11 | In-pipe composite sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207673311U true CN207673311U (en) | 2018-07-31 |
Family
ID=62967707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721712171.2U Active CN207673311U (en) | 2017-12-11 | 2017-12-11 | In-pipe composite sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207673311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916908A (en) * | 2017-12-11 | 2018-04-17 | 中国石油天然气股份有限公司 | In-pipe composite sealing mechanism |
-
2017
- 2017-12-11 CN CN201721712171.2U patent/CN207673311U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107916908A (en) * | 2017-12-11 | 2018-04-17 | 中国石油天然气股份有限公司 | In-pipe composite sealing mechanism |
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