CN211115907U - Bearing assembly of rotary blowout preventer - Google Patents
Bearing assembly of rotary blowout preventer Download PDFInfo
- Publication number
- CN211115907U CN211115907U CN201921935000.5U CN201921935000U CN211115907U CN 211115907 U CN211115907 U CN 211115907U CN 201921935000 U CN201921935000 U CN 201921935000U CN 211115907 U CN211115907 U CN 211115907U
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- bearing
- angular contact
- deep groove
- assembly
- groove ball
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 45
- 238000000926 separation method Methods 0.000 claims description 14
- 230000003068 static effect Effects 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 9
- 238000005553 drilling Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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Abstract
The utility model relates to a bearing combination of rotatory assembly of rotatory preventer belongs to the inside bearing field of rotatory assembly of rotatory preventer, the utility model provides a pair of bearing combination of rotatory assembly of rotatory preventer, include: a deep groove ball bearing; an angular contact bearing set paired by a plurality of angular contact bearings; interior spacer, interior spacer establish in deep groove ball bearing with between the angular contact bearing group top, the utility model discloses an axial dimension and the terminal surface roughness who contacts of spacer and interior spacer ring in the adjustment, guarantee that the upper bearing combination becomes a whole, possessed the function that bears axial load and radial rightting simultaneously.
Description
Technical Field
The utility model belongs to the rotary assembly inner bearing field of rotatory preventer, concretely relates to bearing assembly of rotatory preventer.
Background
At present, in the field use process of a rotating assembly of a rotating blowout preventer, due to the fact that a bearing assembly is unreasonably designed, poor radial centering often occurs, and the up-down moving sealing assembly is severely eccentrically worn, so that the rotating assembly is subjected to sealing failure due to poor radial centering; due to the fact that the bearing assembly is not designed reasonably, even after the deep groove ball bearing bears the load axially, the steel ball of the deep groove ball bearing is seriously deformed or even broken, and therefore the rotating assembly fails due to the fact that the axial load is not stressed reasonably.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bearing assembly of a rotary blowout preventer, aiming at solving the problems that the radial strengthening is not good and the vertical moving sealing assembly is seriously eccentric due to the unreasonable design of the bearing assembly, thereby causing the sealing failure of the rotary assembly caused by the poor radial strengthening; due to the fact that the bearing assembly is unreasonable in design, even after the deep groove ball bearing bears the load axially, the steel ball of the deep groove ball bearing is seriously deformed or even broken, and therefore the problem that the rotating assembly fails due to the fact that the axial load is unreasonable in stress is caused.
In order to achieve the above object, the utility model adopts the following technical scheme:
a bearing assembly of a rotating blowout preventer swivel assembly, comprising:
a deep groove ball bearing;
an angular contact bearing set paired by a plurality of angular contact bearings;
the inner separation barrel is arranged between the deep groove ball bearing and the top end of the angular contact bearing group, and an inner ring of the deep groove ball bearing is connected with an inner ring of the angular contact bearing group through the inner separation barrel;
the outer separation barrel is arranged between the deep groove ball bearing and the top end of the angular contact bearing group, and the outer ring of the deep groove ball bearing is connected with the outer ring of the angular contact bearing group through the inner separation barrel;
the inner ring of the deep groove ball bearing is integrally connected with the inner ring of the angular contact bearing group through an inner separation cylinder, and the outer ring of the deep groove ball bearing is integrally connected with the outer ring of the angular contact bearing group through an outer separation cylinder.
Outer spacer rings and inner spacer rings are arranged among a plurality of angular contact bearings of the angular contact bearing group, inner rings of the angular contact bearings are connected into a whole in a pairwise mode through the inner spacer rings, and outer rings of the angular contact bearings are connected into a whole in a pairwise mode through the inner spacer rings.
The outer spacer ring and the inner spacer ring are in static friction connection with the contact surfaces of the angular contact bearings.
The angular contact bearing group comprises a first tapered roller bearing and a second tapered roller bearing, and the second tapered roller bearing and the first tapered roller bearing are arranged back to back; or
The second tapered roller bearing and the first tapered roller bearing are arranged in a face-to-face manner; or
The second tapered roller bearing and the first tapered roller bearing are arranged in the same direction.
The angular contact bearings of the angular contact bearing set are provided with at least one third angular contact bearing, and the third angular contact bearing is in face-to-face contact with any one angular contact bearing; or
The third angular contact bearing is back to back with any one angular contact bearing.
Except the third angular contact bearing, other angular contact bearings in the angular contact bearing group are in the same direction.
In the angular contact bearing group, the number of the angular contact bearings is more than three, one end of the angular contact bearing clamped between the angular contact bearings is connected with one bearing back to back, and the other end of the angular contact bearing is connected with the other bearing face to face.
The inner partition cylinder is provided with a first rough surface positioned on the top surface and a second rough surface positioned on the bottom surface, the bottom surface of an inner ring of the deep groove ball bearing is provided with a third rough surface, the top surface of the inner ring of the angular contact bearing group is provided with a fourth rough surface, the first rough surface and the third rough surface are in static friction connection, and the second rough surface and the fourth rough surface are in static friction connection;
the outer separating cylinder is provided with a fifth rough surface positioned on the top surface and a sixth rough surface positioned on the bottom surface, the bottom surface of the outer ring of the deep groove ball bearing is provided with a seventh rough surface, the top surface of the outer ring of the angular contact bearing group is provided with an eighth rough surface, the fifth rough surface and the seventh rough surface are in static friction connection, and the sixth rough surface and the eighth rough surface are in static friction connection.
In the angular contact bearing group, a single angular contact bearing is a tapered roller bearing or a deep groove ball bearing.
The beneficial effects of the utility model are that, the utility model discloses an axial dimension and the terminal surface roughness that contacts of spacer cylinder and inside and outside spacer ring in the adjustment guarantee that the upper bearing combination becomes a whole, have possessed the function that bears axial load and radially right simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of a bearing assembly of a rotary blowout preventer assembly according to the present invention.
Labeled as: 1. an upper seal box; 2. an upper shaft sleeve; 3. a deep groove ball bearing; 4. an outer separating cylinder; 5. an inner partition cylinder; 6. a first tapered roller bearing; 7. an outer spacer ring; 8. an inner spacer ring; 9. a central shaft; 10. a rotating assembly housing; 11. a lower shaft sleeve; 12. a lower seal box; 13. and a second tapered roller bearing.
Detailed Description
The bearing assembly of the rotary blowout preventer assembly according to embodiments of the present invention will be described in detail with reference to several specific embodiments.
Example 1
Referring to fig. 1, a schematic structural diagram of a bearing assembly of a rotating assembly of a blowout preventer according to an embodiment of the present invention is shown, the bearing assembly of the rotating assembly of the blowout preventer including:
a deep groove ball bearing 3;
an angular contact bearing set paired by a plurality of angular contact bearings;
the inner isolation cylinder 5 is arranged between the deep groove ball bearing 3 and the top end of the angular contact bearing group, and an inner ring of the deep groove ball bearing 3 is connected with an inner ring of the angular contact bearing group through the inner isolation cylinder 5;
the outer separating cylinder 4 is arranged between the deep groove ball bearing 3 and the top end of the angular contact bearing group, and the outer ring of the deep groove ball bearing 3 is connected with the outer ring of the angular contact bearing group through the inner separating cylinder 5;
the inner ring of the deep groove ball bearing 3 is integrally connected with the inner ring of the angular contact bearing group through an inner separation barrel 5, and the outer ring of the deep groove ball bearing 3 is integrally connected with the outer ring of the angular contact bearing group through an outer separation barrel 4.
In the above embodiment, the angular contact bearing assembly is disposed at the center for receiving the radial force transmitted by the central shaft 9, the deep groove ball bearing 3 is disposed at the lower end of the upper seal box 1, and does not receive or slightly receives the axial force from the central shaft 9, the inner ring of the deep groove ball bearing 3 and the inner ring of the angular contact bearing assembly are connected by the inner spacer 5 between the angular contact bearing assembly and the deep groove ball bearing 3, the outer ring of the deep groove ball bearing 3 and the outer ring of the angular contact bearing assembly are connected by the outer spacer 4, and after receiving the axial force from the central shaft 9, the angular contact bearing assembly transmits the axial component force to the deep groove ball bearing 3 through the inner spacer 5 and the outer spacer 4, and transmits the radial component force to the rotation assembly housing 10.
It should be noted that the lengths of the inner and outer spacers 5 and 4 need to be in close contact with the deep groove ball bearing 3 and the angular contact bearing set, and the inner and outer spacers 5 and 4 combine the deep groove ball bearing 3 and the angular contact bearing set into a whole, and after being installed on the central shaft 9, no matter any part of the upper bearing set is rotated by hand, all the outer rotating parts must be rotated synchronously, and if necessary, the inner and outer spacers 5 and 4 can be in interference fit with the deep groove ball bearing 3 and the angular contact bearing set.
Example 2
Further, please refer to fig. 1, according to another embodiment of the bearing assembly of the rotating blowout preventer of the present invention, an outer spacer ring 7 and an inner spacer ring 8 are disposed between a plurality of angular contact bearings of the angular contact bearing set, inner rings of the angular contact bearings are connected together by the inner spacer ring 8, and outer rings of the angular contact bearings are connected together by the inner spacer ring 8.
In the above embodiment, no matter any part of the upper bearing assembly is rotated by hand, all the outer rotating parts must be rotated synchronously, and at the same time, the angular contact bearing assembly composed of a plurality of angular contact bearings is integrated by the outer spacer ring 7 and the inner spacer ring 8, and at this time, no matter any part of the upper bearing assembly is rotated by hand, the deep groove ball bearing 3 and the inner rings of all the bearings in the angular contact bearing assembly are integrated, and the outer ring is also integrated. After the axial and radial clearances are adjusted by the combination of the deep groove ball bearing 3 and the upper bearing composed of the angular contact bearing group, the deep groove ball bearing 3 is radially righted, and the angular contact bearing group bears the axial load. Severe eccentric wear of the seal assembly is avoided.
Example 3
Further, referring to fig. 1, in another embodiment of the bearing assembly of the rotating blowout preventer according to the present invention, the outer spacer ring 7 and the inner spacer ring 8 are in static friction connection with the contact surfaces of the angular contact bearings.
In the above embodiment, in order to integrate the plurality of angular contact bearings into one body by the outer spacer 7 and the inner spacer 8, all the contact surfaces are made to have roughness by polishing the top surfaces and the lower surfaces of the outer spacer 7 and the inner spacer 8 and the contact surfaces of the plurality of angular contact bearings with the outer spacer 7 and the inner spacer 8, so that the plurality of angular contact bearings are integrally connected after the plurality of angular contact bearings are connected by using the outer spacer 7 and the inner spacer 8.
Example 4
Further, referring to fig. 1, in another embodiment of the bearing assembly of the rotating blowout preventer according to the present invention, the angular contact bearing assembly includes a first tapered roller bearing 6 and a second tapered roller bearing 13, and the second tapered roller bearing 13 and the first tapered roller bearing 6 are disposed back to back; or
The second tapered roller bearing 13 is disposed facing the first tapered roller bearing 6; or
The second tapered roller bearing 13 is provided in the same direction as the first tapered roller bearing 6.
In the above embodiment, the angular contact bearing sets may be combined back to back, face to face, or in the same direction, and may be reasonably matched when bearing forces in different directions.
Example 5
Further, referring to fig. 1, in another embodiment of a bearing assembly of a rotating assembly of a rotary blowout preventer according to the present invention, a plurality of angular contact bearings of the angular contact bearing assembly have at least one third angular contact bearing, and the third angular contact bearing is in face-to-face relation with any one of the angular contact bearings; or
The third angular contact bearing is back to back with any one angular contact bearing.
Except the third angular contact bearing, other angular contact bearings in the angular contact bearing group are in the same direction.
In the above embodiments, the plurality of angular contact shafts may have more than three, a triad of angular contact bearings may function better, a triple configuration, a post-designation DBD (70000/DBD), and a triple configuration, which may be capable of withstanding both radial and 2 axial loads. When the DBD rotates at a high speed, the internal load of the single-row bearing is increased, so that the bearing is possibly damaged, and therefore, the DBD is not suitable for rotating at a high speed, and the main form of triple pairing is as follows: TBT type, TFT type, TT type.
Example 6
Further, the present invention provides another embodiment of a bearing assembly for a rotary blowout preventer assembly, wherein the number of the angular contact bearings is greater than three, one end of the angular contact bearing sandwiched between the two bearings is connected with one bearing back to back, and the other end of the angular contact bearing sandwiched between the two bearings is connected with the other bearing face to face.
In the above embodiment, the plurality of angular contact bearings are arranged face to face and back to back in sequence, and can bear larger axial compliance more uniformly.
Example 7
Further, in another embodiment of a bearing assembly for a rotary blowout preventer swivel assembly of the present invention, the inner spacer 5 has a first rough surface on a top surface and a second rough surface on a bottom surface, the inner race bottom surface of the deep groove ball bearing 3 has a third rough surface, the inner race top surface of the angular contact bearing set has a fourth rough surface, the first rough surface and the third rough surface are in stiction connection, and the second rough surface and the fourth rough surface are in stiction connection;
the outer separating cylinder 4 is provided with a fifth rough surface positioned on the top surface and a sixth rough surface positioned on the bottom surface, the bottom surface of the outer ring of the deep groove ball bearing 3 is provided with a seventh rough surface, the top surface of the outer ring of the angular contact bearing set is provided with an eighth rough surface, the fifth rough surface and the seventh rough surface are in static friction connection, and the sixth rough surface and the eighth rough surface are in static friction connection.
In the above embodiment, the angular contact bearing assembly is connected with the deep groove ball bearing 3 through the inner separation cylinder 5 and the outer separation cylinder 4 in a static friction manner, so that it is ensured that the rotating component of the angular contact bearing assembly or the deep groove ball bearing 3 is rotated at any time, when the load of the central shaft 9 is borne, the rotating angular contact bearing assembly can disperse the axial force to the deep groove ball bearing 3 and send the axial force to the rotating assembly housing 10, and it is ensured that the deep groove ball bearing 3 only needs to bear the axial force, and the deep groove ball bearing 3 is ensured to be in a normal working state when being righted.
Example 8
Further, another embodiment of a bearing assembly for a rotating assembly of a rotary blowout preventer according to the present invention is an angular contact bearing assembly in which the single angular contact bearing is a tapered roller bearing or a deep groove ball bearing.
In the above embodiment, the combination mode of the angular contact bearing assembly may be that a pure tapered roller bearing is combined, and in some cases, a deep groove ball bearing may be arranged in the middle of the angular contact bearing assembly, so that the centering effect of the angular contact bearing assembly is more obvious.
Example 9
Further, referring to fig. 1, according to another embodiment of the bearing assembly of the rotating blowout preventer, a second deep groove ball bearing is disposed at a lower end of the angular contact bearing set, the second deep groove ball bearing is coaxial with the angular contact bearing set, and a distance is provided between the second deep groove ball bearing and the angular contact bearing set;
the top of the deep groove ball bearing 3 is provided with an upper shaft sleeve 2, the bottom of the second deep groove ball bearing is provided with a lower shaft sleeve 11, the upper shaft sleeve 2 is integrally connected with the inner ring of the deep groove ball bearing 3, and the lower shaft sleeve 11 is integrally connected with the inner ring of the second deep groove ball bearing.
In the embodiment, when the rotary assembly is processed and applied on site after the design mode is finished, when the rotary assembly is eccentric due to the non-concentricity of the drilling tool, radial centering can be performed through the deep groove ball bearing which is far away from the upper part and the lower part, so that the upper sealing assembly and the lower sealing assembly of the rotary assembly are well protected, and the serious eccentric wear of the upper movable sealing assembly and the lower movable sealing assembly is avoided. When pressure-controlled drilling is carried out, axial load caused by high pressure of a wellhead is transmitted to a shell of the rotary assembly through the back-to-back upper end single-row tapered roller bearings, and then transmitted to a shell of the rotary blowout preventer to be offset. When the drilling tool is pressed downwards, axial downward force is freely allocated on site through back-to-back, face-to-face or by persons in the field, and the axial force is transmitted to the shell of the rotating assembly by the single-row tapered roller bearing at the lower end and then transmitted to the shell of the rotating blowout preventer to be counteracted. The outer ring of the lower independent deep groove ball bearing 3 is not contacted with the lower step of the rotating assembly shell 10 and the end part of the lower sealing box 12, and is designed to be axially floating, and the main function of the outer ring is to eliminate the axial movement of the rotating part.
The utility model discloses when the installation, the outer lane and the installation of rotatory assembly shell integral type of deep groove ball bearing 3 and angular contact bearing group.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the present embodiment are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
In addition, descriptions related to "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Technical solutions between various embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (9)
1. A bearing assembly of a rotary blowout preventer swivel assembly, comprising:
a deep groove ball bearing (3);
an angular contact bearing set paired by a plurality of angular contact bearings;
the inner isolation cylinder (5) is arranged between the deep groove ball bearing (3) and the top end of the angular contact bearing group, and an inner ring of the deep groove ball bearing (3) is connected with an inner ring of the angular contact bearing group through the inner isolation cylinder (5);
the outer separation barrel (4) is arranged between the deep groove ball bearing (3) and the top end of the angular contact bearing set, and the outer ring of the deep groove ball bearing (3) is connected with the outer ring of the angular contact bearing set through the inner separation barrel (5);
the inner ring of the deep groove ball bearing (3) is integrally connected with the inner ring of the angular contact bearing set through an inner separation cylinder (5), and the outer ring of the deep groove ball bearing (3) is integrally connected with the outer ring of the angular contact bearing set through an outer separation cylinder (4).
2. A bearing combination of a rotary assembly of a rotary blowout preventer according to claim 1, characterized in that between the angular contact bearings of the set there are an outer spacer ring (7) and an inner spacer ring (8), the inner rings of which are connected in pairs by the inner spacer ring (8) and the outer rings of which are connected in pairs by the inner spacer ring (8).
3. A bearing combination of a rotating assembly of a rotary blowout preventer according to claim 2, characterized in that the outer spacer ring (7) and the inner spacer ring (8) are in a static friction connection with the contact surfaces of the angular contact bearings.
4. A bearing combination of a rotary blowout preventer swivel assembly according to claim 1, characterized in that the angular contact bearing set comprises a first tapered roller bearing (6) and a second tapered roller bearing (13), the second tapered roller bearing (13) being arranged back to back with the first tapered roller bearing (6); or
The second tapered roller bearing (13) and the first tapered roller bearing (6) are arranged in a face-to-face manner; or
The second tapered roller bearing (13) is arranged in the same direction as the first tapered roller bearing (6).
5. The rotary blowout preventer swivel assembly bearing assembly according to claim 1, wherein the plurality of angular contact bearings of the angular contact bearing assembly comprise at least one third angular contact bearing in face-to-face relationship with any one of the angular contact bearings; or
The third angular contact bearing is back to back with any one angular contact bearing.
6. The bearing assembly of a rotary blowout preventer swivel assembly according to claim 5, wherein the angular contact bearings of the angular contact bearing assembly are co-directional except for the third angular contact bearing.
7. The bearing assembly of claim 1, wherein the number of angular contact bearings in the set is greater than three, and the sandwiched angular contact bearings are connected back-to-back with one bearing at one end and face-to-face with the other bearing at the other end.
8. A bearing combination for a rotary blowout preventer swivel assembly according to claim 1, characterized in that the inner spacer (5) has a first roughness surface on the top side and a second roughness surface on the bottom side, the inner ring bottom surface of the deep groove ball bearing (3) has a third roughness surface, the inner ring top surface of the angular contact bearing set has a fourth roughness surface, the first roughness surface and the third roughness surface are in stiction connection, the second roughness surface and the fourth roughness surface are in stiction connection;
the outer separating cylinder (4) is provided with a fifth rough surface positioned on the top surface and a sixth rough surface positioned on the bottom surface, the bottom surface of the outer ring of the deep groove ball bearing (3) is provided with a seventh rough surface, the top surface of the outer ring of the angular contact bearing set is provided with an eighth rough surface, the fifth rough surface and the seventh rough surface are in static friction connection, and the sixth rough surface and the eighth rough surface are in static friction connection.
9. The bearing assembly of a rotary blowout preventer swivel assembly of claim 1, wherein the individual angular contact bearings in the set of angular contact bearings are tapered roller bearings or deep groove ball bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921935000.5U CN211115907U (en) | 2019-11-11 | 2019-11-11 | Bearing assembly of rotary blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921935000.5U CN211115907U (en) | 2019-11-11 | 2019-11-11 | Bearing assembly of rotary blowout preventer |
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| Publication Number | Publication Date |
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| CN211115907U true CN211115907U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921935000.5U Active CN211115907U (en) | 2019-11-11 | 2019-11-11 | Bearing assembly of rotary blowout preventer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952948A (en) * | 2019-11-11 | 2020-04-03 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Bearing assembly of rotary blowout preventer |
-
2019
- 2019-11-11 CN CN201921935000.5U patent/CN211115907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952948A (en) * | 2019-11-11 | 2020-04-03 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Bearing assembly of rotary blowout preventer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201113 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: 710018 Shaanxi city of Xi'an province Weiyang District four road Fengcheng Changqing Technology Building Patentee before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right |