CN204899862U - Downhole safety valve - Google Patents
Downhole safety valve Download PDFInfo
- Publication number
- CN204899862U CN204899862U CN201520723940.3U CN201520723940U CN204899862U CN 204899862 U CN204899862 U CN 204899862U CN 201520723940 U CN201520723940 U CN 201520723940U CN 204899862 U CN204899862 U CN 204899862U
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- CN
- China
- Prior art keywords
- outer sleeve
- central tube
- top connection
- valve plate
- center tube
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Abstract
The utility model discloses a downhole safety valve, including top connection, lower clutch and the center tube of connection between top connection and lower clutch, still include the spring coil and cup joint in the outside outer sleeve of center tube that the center tube upper end is cup jointed in the outside of top connection, the lower extreme of center tube and lower clutch upper end sealing connection, screw thread sealing connection is passed through with the top connection in the outer sleeve upper end, the lower extreme and the lower clutch of outer sleeve pass through thread sealing and are connected, the spring snare is equipped with on the center tube and supports the portion of holding with the spring coil counterbalance is held on the center tube, is equipped with on the outer sleeve inner wall to be used for limited spring circle annular spacing of line position down, synthetic hydraulic pressure chamber is enclosed on the inner wall and the top of top connection outer wall and center tube of outer sleeve upper end, is equipped with the feed liquor pipe on the hydraulic pressure chamber, the lower clutch is equipped with the valve plate with the center tube junction, and the lower extreme of outer sleeve is equipped with the control, and the valve plate is through selling the assembly of axle and torsional spring and disk seat together. The utility model discloses can prevent that sealed face is dead by the card, guarantee long -term sealed reliably.
Description
Technical field
The utility model relates to oil underground mining safety means technical field, is specifically related to a kind of storm valve, for marine petroleum exploitation, downhole petroleum exploitation and Well Completion Engineering of Oil Reservoirs etc.
Background technology
Storm valve is that one is contained in Oil/gas Well, when production facility generation fire alarm, line fracture, the irresistible natural calamity of generation (as earthquake, ice condition, violent typhoon etc.) abnormal condition, energy emergency cut-off, prevents blowout, ensures the downhole tool of Oil/gas Well measure, production safety.
Because storm valve is a kind of downhole safety instrument, its safety is most important.Existing storm valve adopts seal soft seal, along with the lengthening of service time, there will be problem: 1. the sand and dust of down-hole can enter into sealing surface and cause stuck; 2. opening and closing can cause sealing part abrasion or the aging sealing performance that causes to decline repeatedly.Therefore, in order to ensure that its security performance just must change seal, the sealing performance of this storm valve that not only needs to keep one's eyes open, also can increase use cost.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of storm valve, and sealing surface can be prevented to be stuck, and ensures that long term seal is reliable.
For solving the problem, the technical scheme that the utility model adopts is as follows:
A kind of storm valve, the central tube comprising top connection, lower contact and be connected between top connection and lower contact, this storm valve also comprises turn and is socketed on the outer sleeve of central tube outside, described central tube upper end is socketed in the outside of top connection, lower end and the lower contact upper end of central tube are tightly connected, outer sleeve upper end is riffled tube, one section of outer wall that top connection is positioned at above central tube is provided with the external screw thread matched with this riffled tube, and outer sleeve is connected by thread seal with top connection; The lower end of outer sleeve is male-pipe, and one section of outer wall that lower contact is positioned at below central tube is provided with the internal thread matched with described male-pipe, and the lower end of outer sleeve is connected by thread seal with lower contact; Described turn is enclosed within central tube, and the central tube of turn upper end is provided with the support division offseted with turn, and the outer sleeve inwall of turn bottom is provided with the annular stop platform for restraining spring circle downstream position; The inwall of described outer sleeve upper end and the top of top connection outer wall and central tube enclose hydraulic cavities, and hydraulic cavities is provided with the feed tube with this hydraulic chamber into communication; Described lower contact and central tube junction are provided with the valve plate for cutting off with conducting central tube and lower contact, and the lower end inner wall of described outer sleeve is provided with valve seat and controls the control member of valve plate folding, together with valve plate to be assembled with valve seat by bearing pin and torsion spring.
Further, control member described in the utility model comprise for fixing valve plate valve plate fixed bar and under stress to valve plate apply elastic force to open the spring leaf of valve plate.
Further, sealing ring is provided with below turn described in the utility model and between annular stop platform.
Further, the support division on central tube described in the utility model and be provided with Internal baffle, ring spring and insert seal ring from top to bottom successively between spigot outer wall.
Further, feed tube upper end described in the utility model is provided with pipeline interface.
Compared to existing technology, the beneficial effects of the utility model are:
1. be threaded connection between outer sleeve and upper and lower joint in storm valve described in the utility model and realize firmly sealing, ensure that long term seal is reliable;
2. storm valve described in the utility model by upper lower contact, connect can effectively prevent sealing surface to be stuck by socket mode between outer tube and central tube.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is storm valve structural representation described in the utility model;
Fig. 2 is storm valve top connection part-structure schematic diagram described in the utility model;
Fig. 3 is storm valve lower contact part-structure schematic diagram described in the utility model;
Wherein, each Reference numeral is: 1, top connection; 2, lower contact; 3, central tube; 4, turn; 5, outer sleeve; 6, annular stop platform; 7, hydraulic cavities; 8, feed tube; 9, valve plate; 10, sealing ring; 11, pipeline interface.
Detailed description of the invention
As Fig. 1, Fig. 2, shown in Fig. 3, in embodiment 1, storm valve described in the utility model, comprise top connection 1, lower contact 2 and the central tube 3 be connected between top connection 1 and lower contact 2, this storm valve also comprises turn 4 and is socketed on the outer sleeve 5 of central tube 3 outside, described central tube 3 upper end is socketed in the outside of top connection 1, lower end and lower contact 2 upper end of central tube 3 are tightly connected, outer sleeve 5 upper end is riffled tube, one section of outer wall that top connection 1 is positioned at above central tube 3 is provided with the external screw thread matched with this riffled tube, outer sleeve 5 is connected by thread seal with top connection 1, the lower end of outer sleeve 5 is male-pipe, and one section of outer wall that lower contact 2 is positioned at below central tube 3 is provided with the internal thread matched with described male-pipe, and the lower end of outer sleeve 5 is connected by thread seal with lower contact, described turn 4 is enclosed within central tube 3, and the central tube 3 of turn 4 upper end is provided with the support division offseted with turn 4, and outer sleeve 5 inwall of turn 4 bottom is provided with the annular stop platform 6 for restraining spring circle 4 downstream position, the described inwall of outer sleeve 5 upper end and the top of top connection outer wall and central tube enclose hydraulic cavities 7, and hydraulic cavities 7 is provided with the feed tube 8 with this hydraulic chamber into communication, described lower contact 2 and central tube 3 junction are provided with for cutting off and the valve plate 9 of conducting central tube 3 with lower contact 2, the lower end inner wall of described outer sleeve 5 is provided with valve seat (not indicating in figure) and controls the control member (not indicating in figure) of valve plate 9 folding, together with valve plate 9 is assembled with valve seat by bearing pin (not indicating in figure) and torsion spring (not indicating in figure).
In embodiment 2, comprise all features of embodiment 1, further, control member described in the utility model comprise for fixing valve plate valve plate fixed bar (not indicating in figure), under stress to valve plate apply elastic force to open the spring leaf (not indicating in figure) of valve plate.
In embodiment 3, comprise all features of embodiment 1, further, below turn 4 described in the utility model and between annular stop platform 6, be provided with sealing ring 10.This feature is also applicable to embodiment 2.
In embodiment 4, comprise all features of embodiment 1, further, the support division on central tube 2 described in the utility model and be provided with Internal baffle (not indicating in figure), ring spring (not indicating in figure) and insert seal ring (not indicating in figure) from top to bottom successively between spigot outer wall.This feature is equally applicable to embodiment 2 and 3.
In the utility model, further, described feed tube 8 upper end is provided with pipeline interface 11.The program is applicable to any one embodiment above-mentioned.
The operating principle of storm valve described in the utility model is as follows: the highly pressurised liquid on ground enters into hydraulic cavities by feed tube, under the pressure of gases at high pressure, descending and the extrusion spring circle of central tube, then the spring leaf of central tube lower end is extruded unseats valve plate, realize central tube and lower contact conducting, reach opening; Otherwise after ground highly pressurised liquid sidles, shell fragment resets, and valve plate is closed thereupon.
Above-mentioned embodiment is only preferred embodiment of the present utility model; can not limit the scope of the utility model protection with this, change and the replacement of any unsubstantiality that those skilled in the art does on basis of the present utility model all belong to the utility model scope required for protection.
Claims (5)
1. a storm valve, the central tube comprising top connection, lower contact and be connected between top connection and lower contact, it is characterized in that, this storm valve also comprises turn and is socketed on the outer sleeve of central tube outside, described central tube upper end is socketed in the outside of top connection, lower end and the lower contact upper end of central tube are tightly connected, outer sleeve upper end is riffled tube, one section of outer wall that top connection is positioned at above central tube is provided with the external screw thread matched with this riffled tube, and outer sleeve is connected by thread seal with top connection; The lower end of outer sleeve is male-pipe, and one section of outer wall that lower contact is positioned at below central tube is provided with the internal thread matched with described male-pipe, and the lower end of outer sleeve is connected by thread seal with lower contact; Described turn is enclosed within central tube, and the central tube of turn upper end is provided with the support division offseted with turn, and the outer sleeve inwall of turn bottom is provided with the annular stop platform for restraining spring circle downstream position; The inwall of described outer sleeve upper end and the top of top connection outer wall and central tube enclose hydraulic cavities, and hydraulic cavities is provided with the feed tube with this hydraulic chamber into communication; Described lower contact and central tube junction are provided with the valve plate for cutting off with conducting central tube and lower contact, and the lower end inner wall of described outer sleeve is provided with valve seat and controls the control member of valve plate folding, together with valve plate to be assembled with valve seat by bearing pin and torsion spring.
2. storm valve according to claim 1, is characterized in that, described control member comprise for fixing valve plate valve plate fixed bar and under stress to valve plate apply elastic force to open the spring leaf of valve plate.
3. storm valve according to claim 1, is characterized in that, is provided with sealing ring below described turn and between annular stop platform.
4. storm valve according to claim 1, is characterized in that, the support division on described central tube and be provided with Internal baffle, ring spring and insert seal ring from top to bottom successively between spigot outer wall.
5. storm valve according to claim 1, is characterized in that, described feed tube upper end is provided with pipeline interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723940.3U CN204899862U (en) | 2015-09-17 | 2015-09-17 | Downhole safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723940.3U CN204899862U (en) | 2015-09-17 | 2015-09-17 | Downhole safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204899862U true CN204899862U (en) | 2015-12-23 |
Family
ID=54922048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520723940.3U Active CN204899862U (en) | 2015-09-17 | 2015-09-17 | Downhole safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204899862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975354A (en) * | 2017-11-23 | 2018-05-01 | 中国海洋石油集团有限公司 | Pressure reversing arrangement |
-
2015
- 2015-09-17 CN CN201520723940.3U patent/CN204899862U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975354A (en) * | 2017-11-23 | 2018-05-01 | 中国海洋石油集团有限公司 | Pressure reversing arrangement |
| CN107975354B (en) * | 2017-11-23 | 2019-11-26 | 中国海洋石油集团有限公司 | Pressure reversing arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |