CN213450311U - Anti-back-buckling locking device for hoop of rotary blowout preventer - Google Patents
Anti-back-buckling locking device for hoop of rotary blowout preventer Download PDFInfo
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- CN213450311U CN213450311U CN202022585866.7U CN202022585866U CN213450311U CN 213450311 U CN213450311 U CN 213450311U CN 202022585866 U CN202022585866 U CN 202022585866U CN 213450311 U CN213450311 U CN 213450311U
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Abstract
The utility model discloses a locking device is prevented back-off by rotatory preventer clamp relates to rotatory preventer and connects locking part technical field, has solved being connected and fixed between present rotatory preventer assembly and the casing, adopts the mode of clamp and bolt usually, nevertheless because rocking of well head vibrations and equipment, appears becoming flexible easily between bolt and the nut, and leads to the clamp locking to become invalid, has the problem of great potential safety hazard, and its technical scheme main points are: the clamp comprises two clamp main bodies which are rotationally connected, wherein the other ends of the two clamp main bodies are rotationally connected with locking pin lugs, the left locking pin lug is fixedly connected with a left locking rod, and the right locking pin lug is fixedly connected with a right locking rod; the right locking rod is movably connected with a locking nut, and the locking nut is limited by the right locking rod and cannot be separated; a locknut which is sleeved with the locking rod on the left side is also arranged between the locknut and the locking pin lug on the right side; the effect of reducing the potential safety hazard in the drilling process is achieved.
Description
Technical Field
The utility model relates to a locking part technical field is connected to rotatory preventer, and more specifically says that it relates to a locking device is prevented back-off by rotatory preventer clamp.
Background
The blowout preventer is used for closing a wellhead in the operation processes of oil testing, well workover, well completion and the like to prevent blowout accidents, integrates the full sealing function and the half sealing function into a whole, has the characteristics of simple structure, easy operation, high pressure resistance and the like, and is a well mouth safety sealing device for preventing blowout, which is commonly used in oil fields; the types of the blowout preventer include a common blowout preventer, a universal blowout preventer and a rotary blowout preventer, and the rotary blowout preventer can realize simultaneous blowout and simultaneous drilling operation.
At present, the known connection and fixation between the rotary blowout preventer assembly and the shell usually adopt a clamp and a bolt mode, the clamp of the rotary blowout preventer is often locked by adopting a manual locking mode due to the limitation of cost and the height of an operation field, the simplest manual locking mode adopts a bolt and nut mode to lock the clamp, but the looseness easily occurs between the bolt and the nut due to the vibration of a wellhead and the shaking of equipment, so that the clamp locking is failed, and great potential safety hazards exist. Therefore, how to design the anti-back-buckling locking device of the hoop of the rotary blowout preventer is a problem which is urgently needed to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a locking device is prevented back-off by rotatory preventer clamp, simple structure, convenient to use can carry out locking connection fast, can prevent effectively again that the clamp is not hard up, reduces the potential safety hazard of well drilling in-process.
The above technical purpose of the present invention can be achieved by the following technical solutions: the clamp comprises two clamp main bodies which are rotationally connected, wherein the other ends of the two clamp main bodies are rotationally connected with locking pin lugs, the locking pin lug on the left side is fixedly connected with a left locking rod, and the locking pin lug on the right side is fixedly connected with a right locking rod; the right locking rod is movably connected with a locking nut, and the locking nut is limited by the right locking rod and cannot be separated; the outer wall of the left locking rod is provided with an external thread, and the inner wall of the end part of the locking nut close to the left locking rod is provided with an internal thread matched with the external thread; and a locknut which is sleeved with the left locking rod is also arranged between the locking nut and the right locking pin lug.
By adopting the technical scheme, when the device is used for connecting and fixing the rotary blowout preventer assembly and the shell, the threads between the locking nut which can freely rotate and slightly swing and the locking rod on the right side are screwed on the locking rod to lock the clamp, and the locking nut is reversely buckled at the rear part of the locking nut to carry out limiting, locking and anti-loosening, even if the device is vibrated and shaken in the locking process, the locking nut cannot be reversely buckled and loosened due to the thread limitation of the reversely buckled locking nut, so that the situation that the clamp locking fails due to the fact that the conventional locking bolt and the nut are easy to loosen and the potential safety hazard is caused is effectively avoided; this structural design is simple, easily assembles and maintains, because there is certain clearance between lock nut and the right side check lock lever, even there is slight disalignment in the check lock lever in left side, also can guide smoothly to connect and detain on, can effectively avoid the clamp ear because processing and exist about the disalignment in the use and the problem that the locking screw that causes is connected the difficulty with the nut.
The utility model discloses further set up to: the inner wall of the locknut is in threaded fit with the outer wall of the right locking rod, and the locknut can move left and right on the right locking rod.
Through adopting above-mentioned technical scheme to locknut moves on the right side locking lever, thereby so that support lock nut tightly.
The utility model discloses further set up to: the inner wall of the end part of the locking nut close to the right locking pin lug protrudes inwards to form a limiting boss, and the end part of the right locking rod in the locking nut is provided with a limiting lug which is tightly abutted against the limiting boss.
Through adopting above-mentioned technical scheme to realize lock nut can free rotation and slight swing on the right side check lock lever, thereby be convenient for lock nut and the threaded connection of left side check lock lever.
The utility model discloses further set up to: the outer walls of the locking nut and the anti-loose nut are of regular hexagon structures.
Through adopting above-mentioned technical scheme to in lock nut and locknut's rotation and with the left side locking lever and the connection of right side locking lever, improve the usability.
The utility model discloses further set up to: and hard alloy layers are arranged on the outer walls of the locking nut and the locknut.
Through adopting above-mentioned technical scheme to improve the hardness of lock nut and locknut outer wall.
The utility model discloses further set up to: and the outer wall of the locknut is provided with a through threaded hole extending along the radial direction of the locknut.
Through adopting above-mentioned technical scheme to when locknut is inconvenient to twist, insert the through thread hole with the help of the foreign object, thereby be convenient for twist.
The utility model discloses further set up to: and a non-metal ring is arranged at the end part of the locking nut close to the locknut.
Through adopting above-mentioned technical scheme to lock nut and locknut's conflict improves mechanical strength.
To sum up, the utility model discloses following beneficial effect has: when the device is used for connecting and fixing the rotary blowout preventer assembly and the shell, the threads between the locking nut which can freely rotate and slightly swing and the locking rod on the left side are screwed on the locking rod on the right side to lock the hoop, and the locking nut is reversely buckled at the rear part of the locking nut to carry out limiting, locking and looseness prevention; this structural design is simple, easily assembles and maintains, because there is certain clearance between lock nut and the right side check lock lever, even there is slight disalignment in the check lock lever in left side, also can guide smoothly to connect and detain on, can effectively avoid the clamp ear because processing and exist about the disalignment in the use and the problem that the locking screw that causes is connected the difficulty with the nut.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of the left locking lever and the locking nut separated in the embodiment of the present invention;
fig. 2 is a schematic structural view of the left locking lever and the locking nut locked in the embodiment of the present invention;
FIG. 3 is an exploded view of the connecting components of the embodiment of the present invention;
fig. 4 is a schematic view of the structure of fig. 3 taken along line B-B.
In the figure: 11. a clamp main body; 12. locking the pin lug; 13. a left side locking lever; 14. a right locking lever; 15. locking the nut; 16. a locknut; 17. a limiting boss; 18. and a limiting bump.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example (b): a locking device for preventing a hoop of a rotary blowout preventer from being buckled reversely is shown in figures 1, 2, 3 and 4 and comprises two hoop main bodies 11 which are rotatably connected, the other ends of the two hoop main bodies 11 are rotatably connected with locking pin lugs 12, the locking pin lug 12 on the left side is fixedly connected with a left locking rod 13, and the locking pin lug 12 on the right side is fixedly connected with a right locking rod 14; the right locking rod 14 is movably connected with a locking nut 15, and the locking nut 15 is limited by the right locking rod 14 and cannot be separated; the outer wall of the left locking rod 13 is provided with an external thread, and the inner wall of the end part of the locking nut 15 close to the left locking rod 13 is provided with an internal thread matched with the external thread; a locknut 16 sleeved with the left locking rod 13 is further arranged between the locking nut 15 and the right locking pin lug 12. When the device is used for connecting and fixing a rotary blowout preventer assembly and a shell, on the right locking rod 14, the locking nut 15 which can rotate freely and swing slightly is screwed with the threads between the left locking rod 13 to lock a hoop, and the left locking rod 13 is locked in a limiting way by the left-hand locking nut 16 at the rear part of the locking nut 15, so that even if the device is vibrated and shaken in the locking process, the locking nut 15 cannot be reversely buckled and loosened due to the thread limitation of the left-hand locking nut 16, and the situation that the hoop is locked and fails due to the fact that the looseness easily occurs between the conventional locking bolt and the nut is effectively avoided, and the potential safety hazard is caused; this structural design is simple, easily assembles and maintains, because there is certain clearance between lock nut 15 and the right side check lock lever 14, even there is slight disalignment left side check lock lever 13, also can guide smoothly to connect and detain on, can effectively avoid the clamp ear because processing and exist about the disalignment in use and the locking screw that causes is connected the problem of difficulty with the nut.
As shown in fig. 1, 2, 3 and 4, the inner wall of the locknut 16 is screw-engaged with the outer wall of the right lock bar 14, and the locknut 16 is allowed to move left and right on the right lock bar 14. So that the locknut 16 moves on the right-hand locking bar 14 in order to tighten the locknut 15.
As shown in fig. 3 and 4, the inner wall of the end portion of the locking nut 15 close to the right locking lug 12 protrudes inwards to form a limiting boss 17, and the end portion of the right locking rod 14 located in the locking nut 15 is provided with a limiting protrusion 18 which abuts against the limiting boss 17. So that the lock nut 15 can freely rotate and slightly swing on the right lock lever 14, thereby facilitating the threaded connection of the lock nut 15 with the left lock lever 13. In this embodiment, lock nut 15's inner chamber is the different through-going face of cylinder of two diameters, and the great face of cylinder of left side diameter sets up the screw thread with left side check lock lever 13 looks adaptation, and the less cylinder in right side is plane or inclined plane with the intersection surface of screw thread cylinder, and the diameter of small cylindrical surface is less than the path of screw thread cylinder, and the left end of lock nut 15's outer wall is equilateral hexagonal structure, and the right-hand member is the face of cylinder, and the external diameter of face of cylinder equals or is less than the inscription circle diameter of hexagonal.
As shown in fig. 1, 2, 3 and 4, the right locking lever 14 has a cylindrical structure with two cylindrical surfaces with different diameters, the left end of the right locking lever is a cylindrical surface with a larger diameter, the right end of the right locking lever is a cylindrical surface with a smaller diameter, the left end surface of the cylinder has a threaded surface with a certain length, and the transition surface of the two cylindrical surfaces is a plane or an inclined surface and is matched with the inner cavity transition surface of the locking nut 15. The thread direction of the locking device is opposite to the direction of the right thread cylindrical surface of the left locking rod 13, the outer diameter of the left end cylindrical surface of the right locking rod 14 is slightly larger than the inner diameter of the right cylindrical surface of the inner cavity of the locking nut 15 and slightly smaller than the small diameter of the left thread cylindrical surface of the inner cavity of the locking nut 15, the outer diameter of the right end cylinder of the right locking rod 14 is smaller than the inner diameter of the right cylindrical surface of the inner cavity of the locking nut 15, the locking nut 15 is arranged on the left end cylindrical surface of the right locking rod 14 in the right-to-left direction, and the locking nut 15 is limited by.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the inner cavity of the locknut 16 is two through cylindrical surfaces with different diameters, the left side is a cylindrical surface with a larger diameter, the right side is a threaded cylindrical surface matched with the right end thread of the right locking rod 14, the left end of the outer wall of the locknut 16 is a cylindrical surface, the right end of the outer wall of the locknut 16 is an equilateral hexagonal structure, the outer diameter of the cylindrical surface is equal to or smaller than the inner circle diameter of the hexagonal, the locknut 16 is arranged on the threaded cylindrical surface of the right locking rod 14, the right locking rod 14 moves left along the axial direction through the threads, the left end surface of the locknut contacts with the right end surface of.
As shown in fig. 1, 2, 3 and 4, the locking lug 12 is a locking lug 12 structure having a locking groove and a locking hole, and is used for connecting the locking lugs on two sides of the clamp, and the locking lug 12 is connected with the right locking rod 14 and the left locking rod 13 through threads, or is fixed in position through welding or gluing.
As shown in fig. 1, 2, 3 and 4, the outer walls of the lock nut 15 and the locknut 16 are regular hexagonal structures. So that the lock nut 15 and the locknut 16 can be rotated and connected with the left and right lock bars 13 and 14, thereby improving usability. The outer walls of the lock nut 15 and the locknut 16 are both provided with hard alloy layers. So as to increase the hardness of the outer walls of the lock nut 15 and the locknut 16. The outer wall of the locknut 16 is provided with a through threaded hole extending in the radial direction thereof. So that when the locknut 16 is not twisted, it is inserted into the through threaded hole by means of a foreign object, thereby facilitating the twisting. The end of the locknut 15 close to the locknut 16 is provided with a non-metallic ring. So that the lock nut 15 interferes with the locknut 16, and the mechanical strength is improved.
The working principle is as follows: this device is when using being connected and fixed between rotatory preventer assembly and the casing, on right side check lock lever 14, but the screw thread that freely rotates and slightly wobbling lock nut 15 and left side check lock lever 13 between closes soon and carries out the clamp locking, and rely on lock nut 15 rear portion left-hand thread locknut 16 to carry out spacing locking, even the device receives vibrations and rocks in locking process, because left-hand thread locknut 16's screw thread restriction, the condition that the back-off pine takes off can not appear in lock nut 15, it is not hard up to have effectively avoided appearing between conventional lock bolt and the nut easily, and lead to clamp locking inefficacy, thereby the condition of taking place the potential safety hazard.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a locking device is prevented back-off by rotatory preventer clamp, includes two clamp main parts (11) of rotating the connection, the other end of two clamp main parts (11) all rotates and is connected with locking round pin ear (12), characterized by: the left locking pin lug (12) is fixedly connected with a left locking rod (13), and the right locking pin lug (12) is fixedly connected with a right locking rod (14); the right locking rod (14) is movably connected with a locking nut (15), and the locking nut (15) is limited by the right locking rod (14) and cannot be separated; the outer wall of the left locking rod (13) is provided with an external thread, and the inner wall of the end part of the locking nut (15) close to the left locking rod (13) is provided with an internal thread matched with the external thread; and a locknut (16) sleeved with the left locking rod (13) is further arranged between the locking nut (15) and the right locking pin lug (12).
2. The anti-back-buckling locking device of the hoop of the rotary blowout preventer as claimed in claim 1, wherein: the inner wall of the locknut (16) is in threaded fit with the outer wall of the right locking rod (14), and the locknut (16) can move left and right on the right locking rod (14).
3. The anti-back-buckling locking device of the hoop of the rotary blowout preventer as claimed in claim 2, wherein: the inner wall of the end part of the locking nut (15) close to the right locking pin lug (12) protrudes inwards to form a limiting boss (17), and the end part of the right locking rod (14) in the locking nut (15) is provided with a limiting lug (18) which is tightly abutted against the limiting boss (17).
4. A rotary blowout preventer clamp anti-back-buckling locking device according to claim 3, wherein: the outer walls of the locking nut (15) and the locknut (16) are of regular hexagon structures.
5. The anti-back-buckling locking device of a hoop of a rotary blowout preventer as claimed in claim 4, wherein: and hard alloy layers are arranged on the outer walls of the locking nut (15) and the locknut (16).
6. The anti-back-buckling locking device of a hoop of a rotary blowout preventer as claimed in claim 5, wherein: the outer wall of the locknut (16) is provided with a through threaded hole extending along the radial direction of the locknut.
7. The anti-back-buckling locking device of a hoop of a rotary blowout preventer as claimed in claim 6, wherein: and a nonmetal ring is arranged at the end part of the locking nut (15) close to the locknut (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022585866.7U CN213450311U (en) | 2020-11-10 | 2020-11-10 | Anti-back-buckling locking device for hoop of rotary blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022585866.7U CN213450311U (en) | 2020-11-10 | 2020-11-10 | Anti-back-buckling locking device for hoop of rotary blowout preventer |
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| Publication Number | Publication Date |
|---|---|
| CN213450311U true CN213450311U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022585866.7U Active CN213450311U (en) | 2020-11-10 | 2020-11-10 | Anti-back-buckling locking device for hoop of rotary blowout preventer |
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| CN (1) | CN213450311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889520A (en) * | 2022-05-07 | 2022-08-12 | 华信唐山石油装备有限公司 | Four-ram blowout preventer transportation pry adaptable to various specifications and transportation method |
-
2020
- 2020-11-10 CN CN202022585866.7U patent/CN213450311U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889520A (en) * | 2022-05-07 | 2022-08-12 | 华信唐山石油装备有限公司 | Four-ram blowout preventer transportation pry adaptable to various specifications and transportation method |
| CN114889520B (en) * | 2022-05-07 | 2023-12-08 | 华信唐山石油装备有限公司 | Four-ram blowout preventer transportation pry capable of adapting to various specifications and transportation method |
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