CN202031520U - Joint device for underwater dry-type Christmas tree sealed cabin - Google Patents
Joint device for underwater dry-type Christmas tree sealed cabin Download PDFInfo
- Publication number
- CN202031520U CN202031520U CN2011200944518U CN201120094451U CN202031520U CN 202031520 U CN202031520 U CN 202031520U CN 2011200944518 U CN2011200944518 U CN 2011200944518U CN 201120094451 U CN201120094451 U CN 201120094451U CN 202031520 U CN202031520 U CN 202031520U
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- China
- Prior art keywords
- pipe
- steel ball
- pipeline
- round pipe
- joint
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- Expired - Lifetime
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Abstract
The utility model relates to a joint device for an underwater dry-type Christmas tree sealed cabin, which is characterized by comprising a sealed joint and an operation joint, wherein the sealed joint is connected onto the top end of the sealed cabin; the operation joint is connected to the lower end of a drill stem; the sealed joint comprises a first round pipe; the upper part of the first round pipe is provided with an internal thread so as to form a female buckle; the middle part of the pipeline of the round pipe is provided with a check valve formed by a steel ball and a spring; the diameter of the pipeline at the upper part of the steel ball is less than that of the steel ball; the diameter of the pipeline at the lower part of the steel ball is greater than that of the steel ball; the operation joint comprises a second round pipe; the lower part of the second round pipe is provided with an external thread so as to form a male buckle; a limit step is arranged in the pipeline of the second round pipe; the pipe wall of the second round pipe is provided with at least one lateral channel communicated with the pipeline of the second round pipe; the inlet of the lateral channel is located above the limit step; a tubular valve core of which the upper end is closed is glidingly arranged in the second round pipe located below the limit step; and the pipe wall of the valve core is provided with at least one through hole. The joint device for the underwater dry-type Christmas tree sealed cabin comprises a simple structure and reliable working performance and is capable of conveniently communicating the drill stem with the underwater dry-type Christmas tree sealed cabin.
Description
Technical field
The utility model relates to a kind of seal nipple device, piecing devices of using about a kind of underwater dry-type production tree sealed compartment particularly, and these piecing devices can conveniently be realized the connection of drilling rod and underwater dry-type production tree sealed compartment.
Background technology
At present, the production tree that China marine drilling engineering is used mainly contains two kinds: platform production tree and wet-type christmas tree under water, and the platform production tree is that well head and production tree are placed on the platform, is dry type tree; Wet-type christmas tree then is that well head and production tree are placed under water under water, the complete and contact with sea water of production tree.Device of the present utility model then is to be used for the underwater dry-type production tree, and just production tree is placed in the sealed compartment, and sealed compartment is placed under water, still adopts underwater well head, but production tree is a dry type tree.The advantage that adopts this device is that production tree itself can be adopted common dry type tree, but again offshore platform needn't be set.
Adopt the underwater dry-type production tree must solve a problem---the maintenance of production tree.When production tree is keeped in repair under water, must first the sealed compartment enclosing cover be risen to more than the water surface, this just need be provided with a joint outer the covering of sealed compartment, and this joint can have convenience and be connected with drilling rod, bears certain pulling force, and can seal under water; Simultaneously also require drilling rod conveniently to be connected with this joint.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides the piecing devices that a kind of underwater dry-type production tree sealed compartment is used, and these piecing devices can conveniently be realized the connection of drilling rod and underwater dry-type production tree sealed compartment.
For achieving the above object, the utility model is taked following technical scheme: the piecing devices that a kind of underwater dry-type production tree sealed compartment is used is characterized in that: it comprises that one is connected the seal nipple on sealed compartment top and the operation joint of a jointed rod lower end; Described seal nipple comprises first pipe, institute first states pipe top and internal thread is set to form box, the pipeline of described first pipe middle part is provided with an one way valve of being made up of steel ball and spring, and the pipe diameter on described steel ball top is less than described steel ball size, and the pipe diameter of described steel ball bottom is greater than described steel ball size; Described operation joint comprises second pipe, and the bottom of described second pipe is provided with external screw thread to form pin thread, is provided with a limited step in the pipeline of described second pipe; The tube wall of described second pipe is provided with at least one side line that is communicated with the pipeline of described second pipe, and the import of described side line is positioned at described limited step top; Described second pipe that is positioned at described limited step below slides and is provided with the tubulose spool of a upper end closed, and the tube wall of described spool is provided with at least one through hole.
Be positioned on the described spool outer wall of described through hole top and circumferentially be provided with a groove, be provided with a sealing ring in the described groove.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model adopts the pin thread of operation joint and the box of seal nipple to be connected, button is gone up in the drilling rod rotation, makes convenient connection the between underwater sealing cabin and the drilling rod, does not need extra operation.2, be provided with the one way valve that one way valve one is made up of steel ball and spring in the seal nipple of the present utility model, drilling rod be connected with sealed compartment put in place before one way valve be in closed condition, guaranteed that seawater can not enter in drilling rod runner and the sealed compartment.3, the utility model is simple in structure, and reliable working performance can conveniently realize the connection of drilling rod and underwater dry-type production tree sealed compartment.
Description of drawings
Fig. 1 is the structural representation of the utility model seal nipple
Fig. 2 is the structural representation of the utility model operation joint
Fig. 3～Fig. 6 is a course of work schematic diagram of the present utility model
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1 and Figure 2, the utility model comprises that one is connected the seal nipple 1 on sealed compartment top and the operation joint 2 of a jointed rod lower end.
Operation joint 2 also comprises a pipe 21, and the bottom of pipe 21 is provided with external screw thread to form pin thread 22, is provided with a limited step 23 in the pipeline of pipe 21.The tube wall of pipe 21 is provided with at least one side line 24 that is communicated with the pipeline of pipe 21, and the import of side line 24 is positioned at limited step 23 tops.The pipe 21 that is positioned at limited step 23 belows slides and is provided with the tubulose spool 25 of a upper end closed, and the tube wall of spool 25 is provided with at least one through hole 26.When spool 25 during at lower position, spool 25 and side line 24 are not communicated with; When spool 25 was up to the position of limited step 23, the through hole 26 on the spool 25 was communicated with the outlet of side line 24, at this moment whole operation joint 2 up/down perforations.
In the foregoing description, be positioned on spool 25 outer walls of through hole 26 tops and circumferentially be provided with a groove, be provided with a sealing ring 27 in the groove, with the sealing function of the pipeline of 25 pairs of pipes 21 of better realization spool.
As Fig. 3～shown in Figure 6, the concrete course of work of the present utility model is as follows:
1, transfers behind the drilling rod attended operation joint 2;
2, transfer to the sealed compartment top, the pin thread 22 of operation joint 2 and the box 12 of seal nipple 1 are connected, and button is gone up in the drilling rod rotation, and sealed compartment is connected with drilling rod;
3, along with detaining on the drilling rod, spool 25 tops of operation joint 2 and the steel ball 13 of seal nipple 1 contact, and the spool 25 of operation joint 2 moves upward;
4, when the spool 25 of operation joint 2 moved upward to the position of limited step 23, spool 25 can't continue up, and spool 25 backs down the steel ball 13 of seal nipple 1, and at this moment the passage of seal nipple 1 and operation joint 2 is all opened, and drilling rod runner and sealed compartment are communicated with;
5, button tightens up to screw thread in the continuation.
Said process is when entering sealed compartment maintenance lift-off seal hatchcover, the connection procedure of drilling rod and plug hatch, on the contrary the process that maintenance finishes to transfer plug hatch is then.
When maintenance, connect by drilling rod, in the cabin, inject air, after maintenance finishes, can connect inert gas injecting in the cabin by drilling rod.
The utility model only describes with the foregoing description; the structure of each parts, the position is set and connects and all can change to some extent; on the basis of technical solutions of the utility model; all improvement and equivalents of individual component being carried out according to the utility model principle all should not got rid of outside protection domain of the present utility model.
Claims (2)
1. piecing devices that underwater dry-type production tree sealed compartment is used, it is characterized in that: it comprises that one is connected the seal nipple on sealed compartment top and the operation joint of a jointed rod lower end;
Described seal nipple comprises first pipe, institute first states pipe top and internal thread is set to form box, the pipeline of described first pipe middle part is provided with an one way valve of being made up of steel ball and spring, and the pipe diameter on described steel ball top is less than described steel ball size, and the pipe diameter of described steel ball bottom is greater than described steel ball size;
Described operation joint comprises second pipe, and the bottom of described second pipe is provided with external screw thread to form pin thread, is provided with a limited step in the pipeline of described second pipe; The tube wall of described second pipe is provided with at least one side line that is communicated with the pipeline of described second pipe, and the import of described side line is positioned at described limited step top; Described second pipe that is positioned at described limited step below slides and is provided with the tubulose spool of a upper end closed, and the tube wall of described spool is provided with at least one through hole.
2. the piecing devices that underwater dry-type production tree sealed compartment as claimed in claim 1 is used is characterized in that: be positioned on the described spool outer wall of described through hole top and circumferentially be provided with a groove, be provided with a sealing ring in the described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200944518U CN202031520U (en) | 2011-04-01 | 2011-04-01 | Joint device for underwater dry-type Christmas tree sealed cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200944518U CN202031520U (en) | 2011-04-01 | 2011-04-01 | Joint device for underwater dry-type Christmas tree sealed cabin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031520U true CN202031520U (en) | 2011-11-09 |
Family
ID=44893822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200944518U Expired - Lifetime CN202031520U (en) | 2011-04-01 | 2011-04-01 | Joint device for underwater dry-type Christmas tree sealed cabin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182418A (en) * | 2011-04-01 | 2011-09-14 | 中国海洋石油总公司 | Joint device for underwater dry-type Christmas tree sealed cabin |
-
2011
- 2011-04-01 CN CN2011200944518U patent/CN202031520U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182418A (en) * | 2011-04-01 | 2011-09-14 | 中国海洋石油总公司 | Joint device for underwater dry-type Christmas tree sealed cabin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111109 Effective date of abandoning: 20140402 |
|
| RGAV | Abandon patent right to avoid regrant |