CN203796211U - Well sealing device - Google Patents
Well sealing device Download PDFInfo
- Publication number
- CN203796211U CN203796211U CN201420040124.8U CN201420040124U CN203796211U CN 203796211 U CN203796211 U CN 203796211U CN 201420040124 U CN201420040124 U CN 201420040124U CN 203796211 U CN203796211 U CN 203796211U
- Authority
- CN
- China
- Prior art keywords
- self
- sealing
- sealing core
- core
- gland
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 210000004907 gland Anatomy 0.000 claims abstract description 23
- 239000011148 porous material Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model discloses a well sealing device which comprises a shell, a self-sealing core, a lower backing ring, a gland and an upper backing ring. A vertically-through inner cavity is formed in the shell and provided with an upper step and a lower step. A flange is arranged at the lower end of the exterior of the shell. The self-sealing core made of rubber is located in the inner cavity and provided with a vertically-through core cavity with the two ends thick and the middle thin. A gap is formed between the outer side of the middle of the self-sealing core and the side wall of the inner cavity. A sealing step is arranged outside the upper portion of the self-sealing core. The lower backing ring is located between the lower end face of the self-sealing core and the lower step. The lower end face of the lower backing ring is in seal fit with the lower step. A communicating hole for communicating the inner cavity with the gap is formed in the side wall of the lower backing ring. The gland is screwed at the upper portion of the shell. The upper backing ring is located between the gland and the self-sealing core and matched with the upper end face of the self-sealing core. The well sealing device has the advantages of being easy to install, low in cost, good in sealing effect and free of external pressure sources.
Description
Technical field
The present invention relates to oil well rig technical field, especially relate to a kind of well-sealing device.
Background technology
Conventionally, oil field oil, well operation device under pressure adopt annular preventer or the ram preventer also lower oil tube with pressure of shunt in a well, and that these two kinds of modes are installed is loaded down with trivial details, cost is higher, and sealing effectiveness is poor, and need to rely on hydraulic system as pressure source.
Summary of the invention
The object of this invention is to provide a kind of well-sealing device, it has, and installation is simple, cost is lower, good sealing effect, and without the feature by external pressure source.
The technical solution adopted in the present invention is: well-sealing device, and described well-sealing device comprises:
---housing, this housing has upper and lower penetrating inner chamber, and this inner chamber has gets out of a predicament or an embarrassing situation and tops bar, and the outside lower end of this housing is provided with flange;
---be arranged in self-sealing core prepared by the rubber of this inner chamber, this self-sealing core has upper and lower penetrating and thick middle thin fuse chamber, two ends, and between outside, the middle part of this self-sealing core and the sidewall of this inner chamber, have space, meanwhile, the upper outside of this self-sealing core is provided with a sealed step;
---the lower gasket ring between this self-sealing core lower surface and this are got out of a predicament or an embarrassing situation, the lower surface of this lower gasket ring and this are got out of a predicament or an embarrassing situation and are sealed and matched, and the sidewall of this lower gasket ring is provided with the intercommunicating pore that is communicated with this inner chamber and this space;
---be bolted in the gland on this housing top;
---the upper gasket ring between this gland and this self-sealing core, on this, the upper surface of gasket ring and this self-sealing core matches;
And sealing step is topped bar and is matched with this.
The edge grip of described gland is tightened auxiliary rod.
The advantage that compared to the prior art the present invention had is: install simple, cost is lower, good sealing effect, without by external pressure source.Well-sealing device of the present invention is installed on the top of operation device under pressure standing part, and while initially installing, the internal diameter of its self-sealing core can be prepared as the external diameter that is greater than oil pipe, thereby very easily installs.Secondly, this gland of manual adjustments repeatedly after these self-sealing core wearing and tearing, can compensate rubber wearing part thereby this gland pushes the top of this self-sealing core.That is, extend the application life of this self-sealing core, and change conveniently as the self-sealing core of main consumptive material, cheap.Moreover, its lower gasket ring lateral opening hole, screwing this gland, compress this self-sealing core and embrace after oil pipe, profit in OIH pipe can enter by the intercommunicating pore on lower gasket ring in the space between this self-sealing core and this intracavity sidewall, thereby by well, press the sidewall of this self-sealing core is compressed, again seal this oil pipe.This process relies on the pressure of profit completely, without by ambient pressure source.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is that the master of embodiments of the invention looks sectional view.
In figure: 10, housing, 11, inner chamber, 12, get out of a predicament or an embarrassing situation, 13, top bar, 14, flange, 15, space; 20, self-sealing core, 21, fuse chamber, 22, sealed step; 30, lower gasket ring, 31, intercommunicating pore; 40, gland; 50, upper gasket ring; 60, tighten auxiliary rod.
The specific embodiment
Embodiment, as shown in Figure 1: well-sealing device, comprising: housing 10, self-sealing core 20, lower gasket ring 30, gland 40, upper gasket ring 50.Concrete:
This housing 10 has upper and lower penetrating inner chamber 11, and this inner chamber 11 has gets out of a predicament or an embarrassing situation 12 and top bar 13, and the outside lower end of this housing 10 is provided with for connecting the flange 14 of the top standing part of apparatus for work.
This self-sealing core 20 is rubber preparation, and is arranged in this inner chamber 11.This self-sealing core 20 has upper and lower penetrating and thick middle thin fuse chamber 21, two ends, between the outside, middle part of this self-sealing core 20 and the sidewall of this inner chamber 11, has space 15.Meanwhile, the upper outside of this self-sealing core 20 is provided with a sealed step 22.
This lower gasket ring 30 is got out of a predicament or an embarrassing situation between 12 in these self-sealing core 20 lower surfaces and this, and the lower surface of this lower gasket ring 30 and this are got out of a predicament or an embarrassing situation and 12 be sealed and matched.That is, this lower gasket ring 30 is limited in its top by this self-sealing core 20.Meanwhile, the sidewall of this lower gasket ring 30 is provided with the intercommunicating pore 31 that is communicated with this inner chamber 11 and this space 15.That is, in this inner chamber 11, having the profit of certain pressure can be in this intercommunicating pore 31 enters this space 15.
This gland 40 is bolted in the top of this housing 10.
On this, gasket ring 50 is between this gland 40 and this self-sealing core 20, and on this, the upper surface of gasket ring 50 and this self-sealing core 20 matches.That is, screw after this gland 40, this gland 40 compresses this self-sealing core 20 by gasket ring on this 50.
Now, sealing step 22 and this are topped bar and 13 are matched.That is, sealing step 22 and this 13 close contacts of topping bar form sealing.
Optimize, for the ease of this gland 40 of turn, the edge grip of this gland 40 is tightened auxiliary rod 60.
Operating principle of the present invention: during use, this self-sealing core 20 is had oil pipe in arms, and after this gland 40 of turn, this gland 40 compresses gasket ring 50 on this downwards, thereby this self-sealing core 20 is compressed on above-below direction, and then this fuse chamber 21 is held closely this oil pipe tightly this oil pipe has been carried out to good sealing.Meanwhile, in this inner chamber 11, there is the profit of pressure in this intercommunicating pore 31 enters this space 15, thereby the sidewall of this self-sealing core 20 is subject to the pressure of this profit, and then inwardly shrinks, again compress this oil pipe, this oil pipe has been implemented to further sealing.Once this self-sealing core 20 has wearing and tearing, can compensate by further screwing the part of 40 pairs of these self-sealing cores of this gland, 20 wearing and tearing.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes manual of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (2)
1. well-sealing device, is characterized in that: described well-sealing device comprises:
---housing (10), this housing (10) has upper and lower penetrating inner chamber (11), and this inner chamber (11) has gets out of a predicament or an embarrassing situation (12) and top bar (13), and the outside lower end of this housing (10) is provided with flange (14);
---be arranged in self-sealing core (20) prepared by the rubber of this inner chamber (11), this self-sealing core (20) has upper and lower penetrating and thick middle thin fuse chamber (21), two ends, and there is space (15) between outside, the middle part of this self-sealing core (20) and the sidewall of this inner chamber (11), meanwhile, the upper outside of this self-sealing core (20) is provided with a sealed step (22);
---be positioned at this self-sealing core (20) lower surface and this lower gasket ring (30) of getting out of a predicament or an embarrassing situation between (12), the lower surface of this lower gasket ring (30) and these get out of a predicament or an embarrassing situation (12) are sealed and matched, and the sidewall of this lower gasket ring (30) is provided with the intercommunicating pore (31) that is communicated with this inner chamber (11) and this space (15);
---be bolted in the gland (40) on this housing (10) top;
---be positioned at the upper gasket ring (50) between this gland (40) and this self-sealing core (20), the upper surface of gasket ring on this (50) and this self-sealing core (20) matches;
And sealing step (22) and this top bar (13) match.
2. well-sealing device according to claim 1, is characterized in that: the edge grip of described gland (40) is tightened auxiliary rod (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040124.8U CN203796211U (en) | 2014-01-22 | 2014-01-22 | Well sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040124.8U CN203796211U (en) | 2014-01-22 | 2014-01-22 | Well sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796211U true CN203796211U (en) | 2014-08-27 |
Family
ID=51378432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420040124.8U Expired - Lifetime CN203796211U (en) | 2014-01-22 | 2014-01-22 | Well sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796211U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295259A (en) * | 2014-10-13 | 2015-01-21 | 重庆中重石油机械有限公司 | Self-sealed joint |
| CN104329042B (en) * | 2014-10-13 | 2016-08-31 | 重庆中重石油机械有限公司 | A kind of self-sealing head glue core assembly |
| CN110886588A (en) * | 2018-09-11 | 2020-03-17 | 中国石油天然气股份有限公司 | Simple well mouth plugging tool for coal bed gas well |
-
2014
- 2014-01-22 CN CN201420040124.8U patent/CN203796211U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295259A (en) * | 2014-10-13 | 2015-01-21 | 重庆中重石油机械有限公司 | Self-sealed joint |
| CN104295259B (en) * | 2014-10-13 | 2016-08-31 | 重庆中重石油机械有限公司 | A kind of self-sealing head |
| CN104329042B (en) * | 2014-10-13 | 2016-08-31 | 重庆中重石油机械有限公司 | A kind of self-sealing head glue core assembly |
| CN110886588A (en) * | 2018-09-11 | 2020-03-17 | 中国石油天然气股份有限公司 | Simple well mouth plugging tool for coal bed gas well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203796211U (en) | Well sealing device | |
| CN204391667U (en) | Flat cable linear sealing box | |
| CN103573212B (en) | Composite bushing well cementation split plug device | |
| CN201457990U (en) | Vacuum compressed bag | |
| CN202252512U (en) | Novel pipe connection quick joint | |
| CN203686406U (en) | Pipe fitting joint structure | |
| CN202452002U (en) | Groove-type movable joint | |
| CN203656402U (en) | Pipe coupling | |
| CN105490243A (en) | Sealed isolation connector | |
| CN205190938U (en) | Prevent loss stem seal structure | |
| CN205190741U (en) | Sealing device who combines radial seal and axial seal | |
| CN204118676U (en) | Seal isolation joint | |
| CN205402039U (en) | Manifold pilot line high -speed joint hydraulic pressure connects | |
| CN210053184U (en) | Explosion-proof cable lead-in device | |
| CN203512347U (en) | Multifunctional vacuum-pumping joint | |
| CN105697904A (en) | Sealed connection device for compressed air aluminium alloy pipelines | |
| CN201196172Y (en) | Oil compensating cylinder | |
| CN205559843U (en) | High platform filler closing device of ball valve | |
| CN203836449U (en) | Self-locking type quick connecting device | |
| CN206290853U (en) | A kind of sealing device of fluidic structures | |
| CN203718107U (en) | Pressure reducing valve adopting large-area plastic diaphragm | |
| CN204828962U (en) | Manufacturing equipment and manufacturing equipment pipeline threading device thereof | |
| CN210623666U (en) | Convenient joint body of adjusting | |
| CN204127513U (en) | A kind of water tank joint | |
| CN204512732U (en) | The connecting head structure of new tube joint |
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: 20140827 |