CN210422549U - Suspension device for underwater wellhead seal assembly - Google Patents
Suspension device for underwater wellhead seal assembly Download PDFInfo
- Publication number
- CN210422549U CN210422549U CN201921105770.7U CN201921105770U CN210422549U CN 210422549 U CN210422549 U CN 210422549U CN 201921105770 U CN201921105770 U CN 201921105770U CN 210422549 U CN210422549 U CN 210422549U
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- spring
- mounting
- shear pin
- lug
- ring
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Abstract
The utility model belongs to the technical field of offshore oil drilling equipment, in particular to an underwater wellhead seal assembly suspension device, which comprises a main body part and a suspension unit, wherein the suspension unit comprises a shearing pin, a baffle ring, a spring and a connecting screw; one end of the spring is fixed on the spring mounting seat, and the other end of the spring is inserted into the inner cavity of the shearing pin; the baffle ring is arranged on the baffle ring seat and is fixedly connected with the main body part through a screw; the shear pin is placed through the mounting groove, arbitrary translation and rotation of the shear pin are limited through the limiting groove, and after the limiting lug is in contact with the semi-annular groove, the shear pin can rotate clockwise by 180 degrees. The utility model discloses simple structure, stability is high, and each spare part is changed conveniently, has improved the availability factor, has reduced the unnecessary operation.
Description
Technical Field
The utility model belongs to the technical field of the marine oil drilling equipment, a sealed assembly linkage of underwater wellhead is related to.
Background
Along with the rapid development of China on the exploration and development of marine oil and gas resources, the research and production of marine oil and gas drilling and production equipment are vital, an underwater wellhead sealing assembly is an important component of an underwater wellhead system and seals a high-pressure wellhead and a casing hanger annular space, and a suspension device of the underwater wellhead sealing assembly is an indispensable part in the lowering process of the sealing assembly and is required to be ensured not to be separated in the lowering process, and after the lowering is finished, the suspension device and the sealing assembly can be quickly and smoothly separated.
At present, the underwater wellhead seal assembly mainly has two suspension modes, namely pin block connection and shearing pin connection, the pin block connection stability is good, the influence of other loads is small, but the suspension release process is complex, and the suspension release failure is easy to occur; the shear pins are convenient to connect, the hanging-off mode is quick, but the influence of other loads is large, and the phenomenon that the shear pins cannot be simultaneously sheared off easily occurs during hanging-off.
Disclosure of Invention
The utility model aims at: the utility model provides an underwater wellhead seals assembly linkage realizes that underwater wellhead seals assembly's quick suspension hangs with separating, and its technical scheme is as follows:
a suspension device for an underwater wellhead seal assembly comprises a main body part and a suspension unit, wherein the suspension unit comprises a shear pin, a baffle ring, a spring and a connecting screw, and is distributed at an interval of 45 degrees; the baffle ring is placed on the baffle ring seat and is fixedly connected with the main body part through a screw; the shear pin is placed through the mounting groove to restrict its rotation through the spacing groove, after spacing lug and semi-annular groove contact, but shear pin square clockwise rotation 180, when the device hangs the unhook under water, the mounting groove can be regarded as liquid circulation passageway again.
Further, be provided with the spring mounting inner chamber of installation spring on the spring mount pad, keep off the ring and lay the inner chamber is laid to the fender ring that is provided with on the ring laying seat and lays the fender ring of fender ring, shear pin one end have with sealed assembly shrinkage pool be connected 45 inclined planes, the other end have with spring coupling's inner chamber and with keep off ring mounting groove complex lug, there is the spacing lug with fender ring spacing groove complex at shear pin middle part.
Furthermore, the three mounting lugs of the shear pin are a first lug, a second lug and a third lug which are distributed at an interval of 120 degrees, the two limiting lugs are arranged on the same bus as the first mounting lug, and the limiting lugs are higher than the first mounting lug.
Furthermore, three mounting grooves penetrating through the whole retaining ring are formed in the inner cavity of the retaining ring and distributed at intervals of 120 degrees, the limiting grooves are divided into two sections, the depth of the limiting grooves is different from the inner end face to the middle part and is overlapped with the mounting grooves, the depth of the limiting grooves is different from the outer end face to the middle part, and the intervals of the two sections of limiting grooves are 180 degrees; the middle part of the inner cavity of the baffle ring is provided with a semi-annular groove which is connected with two sections of limiting grooves and is in clearance fit with the limiting lug, and the shearing pin can rotate 180 degrees clockwise in the inner cavity of the baffle ring along the semi-annular groove.
The utility model has the advantages that: the utility model relates to an underwater wellhead seal assembly suspension device, the shear pin adopts installation lug and spacing lug structure, the retaining ring has mounting groove, spacing groove and semi-annular groove, semi-annular groove and spacing lug clearance fit, the shear pin can do 180 degrees of rotation in retaining ring inner chamber, and need not take out the retaining ring just can carry out the change of shear pin, convenient and fast; the utility model relates to an underwater wellhead seals assembly linkage has higher interchangeability, in case linkage's part takes place wearing and tearing or fracture, only needs to change corresponding spare part, has not only reduced the manufacturing cost of enterprise, still accords with the requirement of low carbon environmental protection at present.
Drawings
FIG. 1 is a front view of an underwater wellhead seal assembly suspension of the present invention;
FIG. 2 is a cross-sectional view of an underwater wellhead seal assembly suspension of the present invention;
FIG. 3 is a partial view of an underwater wellhead seal assembly suspension of the present invention;
fig. 4 is an isometric view of a retaining ring of an underwater wellhead seal assembly suspension device of the present invention;
fig. 5 is a top view of a shear pin of a suspension device for an underwater wellhead seal assembly of the present invention;
fig. 6 is an isometric view of a shear pin of an underwater wellhead seal assembly suspension device of the present invention;
in the figure, 1-the main body part, 2-the suspension unit, 3-the shear pin cavity, 4-the spring, 5-the shear pin, 6-the baffle ring, 7-the connecting screw, 8-the first limit groove, 9-the spring installation cavity, 10-the baffle ring seat, 11-the installation groove, 12-the screw hole, 13-the installation convex block two, 14-the limit convex block, 15-the installation convex block one, 16-the installation convex block three, 17-the baffle ring cavity, 18-the spring seat, 19-the limit groove two, 20-the semi-ring groove.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, fig. 2, fig. 3, the utility model relates to an underwater wellhead seals assembly linkage, including main part 1 and suspension unit 2, suspension unit 2 includes shear pin 5, fender ring 6, spring 4 and connecting screw 7, spring 4 one end is fixed on spring mount 18, keep off ring 6 and lay on keeping off ring mount 10 to be connected fixedly together through connecting screw 7 and main part 1, shear pin 5 lays through mounting groove 11 to restrict its rotation through spacing groove 8.
The shear pin 5 is provided with three mounting convex blocks which are a first mounting convex block 15, a second mounting convex block 13 and a third mounting convex block 16 at intervals of 120 degrees, the limiting convex blocks 14 are arranged on the same bus as the first mounting convex block 15, and the limiting convex blocks 14 are higher than the first mounting convex blocks 15.
The inner cavity 17 of the baffle ring is provided with three mounting grooves 11 penetrating through the whole baffle ring and distributed at intervals of 120 degrees, the limiting groove 8 is divided into two sections, one section is different from the inner end surface to the middle part and is superposed with the mounting grooves 11 at different depths, the other section is different from the outer end surface to the middle part, and the two sections of limiting grooves are spaced at intervals of 180 degrees; the middle part of the inner cavity 17 of the baffle ring is provided with a semi-annular groove 20 which is connected with two sections of limiting grooves and is in clearance fit with the limiting lug 14, and the shearing pin 5 can rotate 180 degrees clockwise in the inner cavity 17 of the baffle ring.
The utility model relates to an underwater wellhead seals assembly linkage's concrete working process as follows:
firstly, one end of a spring 4 is fixedly installed on a spring installation seat 18, then a baffle ring 6 is arranged on a baffle ring installation seat 10, a limiting groove II 19 is arranged at the upper end, then the baffle ring 6 is connected with a main body part 1 through a connecting screw 7, finally, a first bump 15 on a shearing pin 5 is aligned with a second limiting groove 19 and horizontally pushed in, when the limiting bump 14 is in contact with a semi-annular groove 20, because the limiting bump 14 is higher than the first installation bump 15, the installation groove 11 limits the axial movement of the limiting bump 14, at the moment, the limiting bump 14 rotates clockwise 180 degrees along the semi-annular groove 20, the inclined surface of the shearing pin 5 is arranged at the lower part, and the suspension unit 2 is completely installed.
When the sealing assembly needs to be lowered, the suspension device is vertically lowered into an inner cavity of the sealing assembly, the inclined surface of the shearing pin 5 is in contact with a concave hole of the sealing assembly, the shearing pin 5 is subjected to a force for extruding the spring 4, the spring 4 is compressed along with the increase of the pressure, the shearing pin 5 translates inwards until the shearing pin 5 is completely inserted into the concave hole, and the lowering process is carried out after the sealing assembly is suspended.
After the sealing assembly is installed in the annular space between the wellhead and the casing hanger, the suspension device is lifted, the shearing pin 5 is sheared, and the suspension device and the sealing assembly are separated from each other to finish the one-time lowering process. The shear pin 5 needs to be replaced after the primary lowering process is completed, the sheared shear pin 5 rotates anticlockwise for 180 degrees through a tool, and the retainer ring 6 does not need to be taken out in the process.
The above is to the utility model discloses carry out the detailed description with the example mode, nevertheless the utility model discloses be not limited to above-mentioned example, the fan is in the impartial replacement and the improvement of doing on the basis of the utility model discloses all be within the protection scope.
Claims (4)
1. The utility model provides a sealed assembly linkage of underwater wellhead, includes main part and suspension unit, suspension unit includes shear pin, fender ring, spring and connecting screw, and 45 distributions in interval, its characterized in that spring one end is fixed on the spring mount pad, and the other end inserts shear pin inner chamber, keep off the ring and lay the inner chamber through keeping off the ring and lay on keeping off the ring and lay the seat to be connected fixedly together through screw and main part, shear pin lays through the mounting groove to restrict its arbitrary rotation through the spacing groove, spacing lug and semi-annular groove contact back, but shear pin square clockwise rotation 180, the device is hanging when separating the string under water, and the mounting groove can be as liquid circulation passageway again.
2. The suspension device for the underwater wellhead sealing assembly according to claim 1, wherein the spring mounting seat is provided with a spring mounting inner cavity for mounting a spring, the baffle ring mounting seat is provided with a baffle ring mounting inner cavity for mounting a baffle ring, one end of the shear pin is provided with a 45-degree inclined plane connected with the concave hole of the sealing assembly, the other end of the shear pin is provided with an inner cavity connected with the spring and a lug matched with the baffle ring mounting groove, and the middle part of the shear pin is provided with a limit lug matched with the baffle ring limit groove.
3. The suspension device for the underwater wellhead seal assembly according to claim 1 or 2, wherein the three mounting lugs of the shear pin are a first lug, a second lug and a third lug which are distributed at intervals of 120 degrees, the two limiting lugs are arranged on the same bus as the first mounting lug, and the limiting lugs are higher than the first mounting lug.
4. The suspension device for the sealing assembly of the underwater wellhead according to claim 1 or 2, wherein the retaining ring installation cavity is provided with three installation grooves penetrating through the whole retaining ring at intervals of 120 degrees, the limiting grooves are divided into two sections, one section is different from the inner end surface to the middle part and is superposed with the installation grooves at different depths, the other section is divided from the outer end surface to the middle part, the two sections of limiting grooves are separated by 180 degrees, the middle part of the inner cavity of the retaining ring is provided with a semi-annular groove connecting the two sections of limiting grooves and is in clearance fit with the limiting lug, and the shearing pin can rotate clockwise by 180 degrees in the inner cavity of the retaining ring along the semi-annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921105770.7U CN210422549U (en) | 2019-07-16 | 2019-07-16 | Suspension device for underwater wellhead seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921105770.7U CN210422549U (en) | 2019-07-16 | 2019-07-16 | Suspension device for underwater wellhead seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210422549U true CN210422549U (en) | 2020-04-28 |
Family
ID=70380820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921105770.7U Expired - Fee Related CN210422549U (en) | 2019-07-16 | 2019-07-16 | Suspension device for underwater wellhead seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210422549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116446811A (en) * | 2023-06-15 | 2023-07-18 | 威飞海洋装备制造有限公司 | Underwater wellhead annular sealing assembly running-in device |
-
2019
- 2019-07-16 CN CN201921105770.7U patent/CN210422549U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116446811A (en) * | 2023-06-15 | 2023-07-18 | 威飞海洋装备制造有限公司 | Underwater wellhead annular sealing assembly running-in device |
| CN116446811B (en) * | 2023-06-15 | 2023-10-24 | 威飞海洋装备制造有限公司 | Underwater wellhead annular sealing assembly running-in device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 Termination date: 20210716 |