Wellhead blowout prevention pipe locking device

Abstract

The utility model discloses a wellhead blowout prevention pipe locking device which comprises a supporting seat and a blowout prevention pipe body, and two self-resetting axial sliding limiting devices which are oppositely arranged are arranged on the supporting seat. The supporting base is provided with a containing assembly between the two self-resetting axial sliding limiting devices, the containing assembly can be connected with the self-resetting axial sliding limiting devices through movable limiting devices, and the blowout prevention pipe body can be placed on the containing assembly. A limiting ring is arranged in the self-resetting axial sliding limiting device, and an assembly ring matched with the inner wall of the limiting ring is arranged on the outer wall of the blowout prevention pipe body. The blowout prevention pipe body can be locked and limited more stably in the transportation process, operation is convenient, and the stability of the blowout prevention pipe body in the transportation process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum equipment transportation, in particular to a wellhead blowout preventer locking device. Background Art

[0002] The lubricant preventer is a safety device used in oil drilling to prevent the eruption of oil, gas and other substances from the wellhead. It is usually connected to the drill pipe through a specific connection method. During transportation, the lubricant preventers are often simply stacked in batches. During transportation, the lubricant preventers may experience certain rolling collisions or even forward and backward collisions, causing them to be damaged or scattered. Therefore, a wellhead lubricant preventer locking device is needed to solve the above problems.

[0003] Publication (Announcement) No.: CN220466163U discloses a vertical transport skid for a blowout preventer. By adding a guide assembly and a clamping mechanism, the blowout preventer can be stably placed upright during transportation and can be directly hoisted when in use, reducing the amount of work on the well, lowering the work intensity, and shortening the work cycle.

[0004] Publication (Announcement) No. CN203682161U discloses a lubricant pipe storage and transportation rack. Lubricant pipes are mounted on the rack, with their lower ends inserted into positioning posts and their upper ends resting against clamping grooves, arranged in a matrix. During transportation, the rack folds to one side under the action of a hydraulic cylinder. At this point, the clamping grooves of the front and rear racks tightly clamp the lubricant pipes, automatically securing them for easier storage and transportation.

[0005] Publication (Announcement) No.: CN220504988U discloses a transport skid combining a lubricant preventer and long outriggers. By installing the lubricant preventer in a vertical position, it is convenient to lift and connect the threaded buckles one by one, reducing the labor intensity required in the traditional operation process of converting the horizontal position to the vertical position; the long outriggers are integrated on the back side of the lubricant preventer, and the use and disassembly of the long outriggers do not affect each other and save equipment space; the skid can be transported separately or integrated into vehicle-mounted equipment as a module for transportation.

[0006] The above-mentioned existing technologies are all transport frames. In order to allow the lubricant preventer to be smoothly loaded into the transport frame, it is necessary to provide a larger assembly space at the installation position so that there is still a collision gap for the lubricant preventer during transportation. Although it will not scatter, the problem of collision damage still exists.

[0007] In short, the technical solutions of the above-disclosed technologies, the technical problems to be solved and the beneficial effects produced are all different from those of the present utility model. Regarding the more technical features, technical problems to be solved and the beneficial effects of the present utility model, the above-disclosed technical documents do not provide any technical inspiration. Utility Model Content

[0008] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a wellhead blowout preventer locking device.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A wellhead blowout preventer locking device includes a support seat and a blowout preventer body, the support seat has two oppositely arranged self-resetting axial sliding limit devices; the support seat is provided with a placement assembly between the two self-resetting axial sliding limit devices, the placement assembly can be connected to the self-resetting axial sliding limit device through a movable limit device, and the blowout preventer body can be placed on the placement assembly; a limiting ring is provided in the self-resetting axial sliding limit device, and the outer wall of the blowout preventer body is provided with an assembly ring that cooperates with the inner wall of the limiting ring.

[0011] Furthermore, the self-resetting axial sliding limit device further includes a guide groove and a self-resetting sliding support device;

[0012] Specifically, a guide groove is provided on the support seat, a self-resetting sliding support device is provided in the guide groove, the self-resetting sliding support device and the placement component can be connected through a movable limiting device, and a limiting ring is provided on the self-resetting sliding support device.

[0013] Furthermore, the self-resetting sliding support device includes a moving rod;

[0014] Specifically, the head of the movable rod is provided with a plug, and a limit groove is provided on the plug. The movable limit device can be inserted into the limit groove. Two self-resetting axial sliding limit devices are arranged opposite to each other so that the plugs of the two movable rods face each other.

[0015] Specifically, a guide block is connected to the lower part of the tail of the moving rod, and the guide block is slidably arranged in the guide groove. A first elastic component is connected to the side of the guide block facing the plug, and the other end of the first elastic component is connected to the inner wall of the guide groove;

[0016] Specifically, the upper end surface of the moving rod is connected to the limiting ring.

[0017] Furthermore, the plug of the movable rod is an inclined surface, the guide block is set to be T-shaped, and the shape of the guide groove is adapted to the shape of the guide block.

[0018] Furthermore, the first elastic component is a first spring, and the first spring is always in a stretched state.

[0019] Furthermore, the assembly ring of the blowout preventer body is a threaded ring, and the limiting ring is composed of a threaded barrel, a sealing gasket, and a limiting extrusion ring from the inside to the outside. The limiting extrusion ring is connected to the moving rod, and the threaded ring is used to cooperate with the threaded barrel;

[0020] Specifically, the threaded barrel and the sealing gasket are fixedly connected, and the sealing gasket and the limiting extrusion ring are tapered.

[0021] Furthermore, the placement assembly includes a limiting seat and a placement plate, the upper end of the limiting seat is provided with a vertical rod, and the top end of the vertical rod is connected to the placement plate;

[0022] Specifically, the placement plate is an arc-shaped plate, and the axis of the arc-shaped surface of the placement plate coincides with the axis of the limiting ring;

[0023] Specifically, a movable limiting device is provided on the upper wall of the limiting seat. When the plug of the movable rod is inserted into the limiting seat, the movable limiting device is inserted into the limiting groove.

[0024] Furthermore, the movable limiting device includes a guide sleeve, the guide sleeve is provided through the upper wall of the limiting seat, a limiting column is slidably provided in the guide sleeve, the top end of the limiting column is connected to a circular plate, and the lower end of the limiting column can be inserted into the limiting groove;

[0025] Specifically, a second elastic component is provided on the outer sleeve of the limiting column, the upper end of the second elastic component contacts the lower end surface of the circular plate, and the lower end of the second elastic component contacts the upper end surface of the guide sleeve.

[0026] Furthermore, the second elastic component is a second spring, and the second spring is always in a compressed state.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The wellhead lubricant locking device is provided with a limiting extrusion ring, a sealing gasket, a threaded barrel, a threaded ring, a guide block and a guide groove. The limiting extrusion ring can move along the guide groove, making it convenient to insert the two limiting extrusion rings into the threaded barrel outside the lubricant body. The inclined surface of the inner wall of the limiting extrusion ring contacts the inclined part of the outer side of the sealing gasket, thereby achieving a certain degree of extrusion on the sealing gasket. The limiting extrusion ring has a tighter extrusion contact with the threaded barrel, ensuring that the locking and limiting of the lubricant body during transportation is more stable and easy to operate, thereby ensuring its stability during transportation.

[0029] 2. The wellhead blowout preventer locking device is equipped with a limit seat, a limit column, a guide sleeve, a second elastic component and a limit groove. The inclined surface of the moving rod will squeeze the limit column to move upward. After the limit column corresponds to the limit groove position, the second elastic component controls the limit column to move downward and insert it into the limit groove, cooperating with the limit seat to achieve a stable connection with the moving rod, making the connection and assembly of the moving rod and the limit extrusion ring convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural diagram of a wellhead blowout preventer locking device of the utility model;

[0031] Figure 2 This is a schematic structural diagram of the blowout preventer body in the utility model;

[0032] Figure 3 This is a schematic structural diagram of the threaded barrel in the utility model;

[0033] Figure 4 This is a schematic structural diagram of the position-limiting extrusion ring in the utility model;

[0034] Figure 5 It is a structural diagram of the movable limiting device in the utility model.

[0035] In the figure: 1. support seat; 2. blowout preventer body; 3. guide groove; 4. sliding support device; 41. moving rod; 42. limiting groove; 43. guide block; 44. first elastic component; 5. limiting extrusion ring; 6. sealing gasket; 7. threaded ring; 8. threaded cylinder; 9. limiting seat; 10. movable limiting device; 101. guide sleeve; 102. limiting column; 103. circular plate; 104. second elastic component; 11. vertical rod; 12. placement plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1:

[0038] See also Figures 1 to 5 The utility model provides a wellhead blowout preventer locking device, including a support seat 1 and a blowout preventer body 2. A guide groove 3 is provided on the support seat 1, and a placement component is provided on the support seat 1. A self-resetting sliding support device 4 is provided in the guide groove 3. The self-resetting sliding support device 4 and the placement component can be connected through a movable limiting device 10. A limiting ring is provided on the self-resetting sliding support device 4. The outer wall of the blowout preventer body 2 is provided with an assembly ring that cooperates with the inner wall of the limiting ring. The blowout preventer body 2 can be placed on the placement component.

[0039] The self-resetting sliding support device 4 includes a moving rod 41, a plug is provided at the head of the moving rod 41, a limiting groove 42 is provided on the plug, and the movable limiting device 10 can be inserted into the limiting groove 42, and a guide block 43 is connected to the lower tail of the moving rod 41, and the guide block 43 is slidably arranged in the guide groove 3. The guide block 43 is connected to a first elastic component 44 on the side facing the plug, and the other end of the first elastic component 44 is connected to the inner wall of the guide groove 3, and the upper end face of the moving rod 41 is connected to the limiting ring.

[0040] The plug is used to enable the moving rod 41 to be smoothly inserted into the limiting seat 9; preferably, the plug of the moving rod 41 is an inclined surface.

[0041] Among them, the guide groove 3 guides and limits the movement of the guide block 43 and the limiting ring, so that the guide block 43 and the limiting extrusion ring 5 will not move in the vertical direction; preferably, the guide block 43 is set to be T-shaped, and the shape of the guide groove 3 is adapted to the shape of the guide block 43.

[0042] Among them, after the limiting ring loses external pulling, the first elastic component 44 controls the reset action of the limiting ring; preferably, the first elastic component 44 is a first spring, and the first spring is always in a stretched state.

[0043] The assembly ring of the blowout preventer body 2 is a threaded ring 7, and the limiting ring is composed of a threaded barrel 8, a sealing gasket 6, and a limiting extrusion ring 5 from the inside to the outside. The limiting extrusion ring 5 is connected to the moving rod 41, and the threaded barrel 8 and the sealing gasket 6 are fixedly connected. The sealing gasket 6 and the limiting extrusion ring 5 are tapered so that the limiting extrusion ring 5 can press the sealing gasket 6. The threaded ring 7 is used to cooperate with the threaded barrel 8.

[0044] The limiting extrusion ring 5 can limit the position of the blowout preventer body 2 through the stable and tight contact between the sealing gasket 6 and the threaded barrel 8.

[0045] Among them, the threaded ring 7 and the threaded barrel 8 are used to facilitate assembly between the two, and the threaded ring 7 and the blowout preventer body 2 can be limited by limiting the threaded barrel 8 later.

[0046] Among them, the sealing gasket 6 and the limiting extrusion ring 5 are matched with each other in a tapered manner, and the contact of the inclined surface is used to make the limiting extrusion ring 5 squeeze the sealing gasket 6 to deform to a certain extent, and the sealing gasket 6 and the threaded tube 8 cannot be easily moved in the horizontal direction inside the limiting extrusion ring 5.

[0047] The placement assembly includes a limit seat 9 and a placement plate 12. A vertical rod 11 is provided at the upper end of the limit seat 9. The top end of the vertical rod 11 is connected to the placement plate 12. The placement plate 12 is an arc-shaped plate. The axis of the placement plate 12 coincides with the axis of the limit ring. A movable limit device 10 is provided through the upper wall of the limit seat 9 at the position corresponding to the self-resetting sliding support device 4.

[0048] The placement plate 12 is used to support and cushion the blowout preventer body 2 to prevent it from being damaged by direct contact with the ground.

[0049] The movable limiting device 10 includes a guide sleeve 101, which is arranged through the upper wall of the limiting seat 9. A limiting column 102 is slidably provided in the guide sleeve 101. The top of the limiting column 102 is connected to a circular plate 103. The lower end of the limiting column 102 can be inserted into the limiting groove 42. A second elastic component 104 is provided on the outer sleeve of the limiting column 102. The upper end of the second elastic component 104 contacts the lower end surface of the circular plate 103, and the lower end of the second elastic component 104 contacts the upper end surface of the guide sleeve 101.

[0050] The guide sleeve 101 is used to guide the movement of the limiting column 102 so that the limiting column 102 can stably move in the vertical direction.

[0051] The limiting groove 42 and the limiting column 102 are used to limit the horizontal direction of the moving rod 41 so that the moving rod 41 and the limiting seat 9 remain stable.

[0052] The second elastic component 104 is used to ensure stable contact between the limiting column 102 and the limiting groove 42; preferably, the second elastic component 104 is a second spring, and the second spring is always in a compressed state.

[0053] The guide groove 3, the self-resetting sliding support device 4, and the limiting ring constitute a self-resetting axial sliding limiting device. Two self-resetting axial sliding limiting devices are provided and arranged opposite to each other so that the plugs of the two moving rods face each other.

[0054] This arrangement can balance the force on the blowout preventer body and ensure a secure lock.

[0055] Example 2:

[0056] This embodiment provides the working principle of the utility model, specifically:

[0057] When the blowout preventer body 2 needs to be locked, the two threaded barrels 8 are directly rotated outside the threaded ring 7, and then the two limiting extrusion rings 5 ​​are pulled away from each other, so that the first elastic component 44 is in a stretched state, and the blowout preventer body 2 is placed on the placement plate 12, with the blowout preventer body 2 located between the two limiting extrusion rings 5;

[0058] Then the limiting extrusion ring 5 is loosened, and the first elastic component 44 controls the guide block 43 and the moving rod 41 to move close to the limiting seat 9. The limiting extrusion ring 5 is sleeved on the outside of the sealing gasket 6. At the same time, the plug of the moving rod 41 moves into the limiting seat 9 and squeezes the limiting column 102 to move upward. When the moving rod 41 is stably inserted in the limiting seat 9, the second elastic component 104 controls the limiting column 102 to move downward and insert into the limiting groove 42, thereby completing the locking and limiting of the blowout preventer body 2.

[0059] All components not discussed in detail in this application and the connection methods of the components in this application are well-known technologies in the technical field and can be directly applied without further explanation.

[0060] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0061] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0062] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A wellhead lubricant prevention pipe locking device, comprising a support seat and a lubricant prevention pipe body, characterized in that: The support seat has two self-resetting axial sliding limit devices arranged opposite to each other; The support seat is provided with a placement component between the two self-resetting axial sliding limit devices, the placement component can be connected to the self-resetting axial sliding limit device through a movable limit device, and the lubricator body can be placed on the placement component; A limiting ring is provided in the self-resetting axial sliding limiting device, and an assembly ring that cooperates with the inner wall of the limiting ring is provided on the outer wall of the lubricator body.

2. A wellhead lubricant preventer locking device according to claim 1, characterized in that: The self-resetting axial sliding limit device also includes a guide groove and a self-resetting sliding support device; A guide groove is provided on the support seat, a self-resetting sliding support device is provided in the guide groove, the self-resetting sliding support device and the placement component can be connected through a movable limiting device, and a limiting ring is provided on the self-resetting sliding support device.

3. A wellhead lubricant preventer locking device according to claim 2, characterized in that: The self-resetting sliding support device includes a moving rod; The head of the moving rod is provided with a plug, and a limit groove is provided on the plug. The movable limit device can be inserted into the limit groove. Two self-resetting axial sliding limit devices are arranged opposite to each other so that the plugs of the two moving rods face each other; A guide block is connected to the lower portion of the tail of the moving rod, and the guide block is slidably arranged in the guide groove. A first elastic component is connected to the side of the guide block facing the plug, and the other end of the first elastic component is connected to the inner wall of the guide groove; The upper end surface of the moving rod is connected to the limiting ring.

4. A wellhead lubricant preventer locking device according to claim 3, characterized in that: The plug of the moving rod is an inclined surface, the guide block is set to be T-shaped, and the shape of the guide groove is adapted to the shape of the guide block.

5. The wellhead lubricant preventer locking device according to claim 3, characterized in that: The first elastic component is a first spring, and the first spring is always in a stretched state.

6. The wellhead lubricant preventer locking device according to claim 3, characterized in that: The assembly ring of the blowout preventer body is a threaded ring, and the limiting ring is composed of a threaded barrel, a sealing washer, and a limiting extrusion ring from the inside to the outside. The limiting extrusion ring is connected to the moving rod, and the threaded ring is used to cooperate with the threaded barrel; The threaded barrel and the sealing gasket are fixedly connected, and the sealing gasket and the limiting extrusion ring are tapered.

7. The wellhead lubricant preventer locking device according to claim 3, characterized in that: The placement assembly includes a limiting seat and a placement plate. The upper end of the limiting seat is provided with a vertical rod, and the top end of the vertical rod is connected to the placement plate. The placement plate is an arc-shaped plate, and the axis of the arc-shaped surface of the placement plate coincides with the axis of the limiting ring; A movable limiting device is provided on the upper wall of the limiting seat. When the plug of the moving rod is inserted into the limiting seat, the movable limiting device is inserted into the limiting groove.

8. The wellhead lubricant preventer locking device according to claim 7, characterized in that: The movable limiting device includes a guide sleeve, which is provided through the upper wall of the limiting seat, and a limiting column is slidably provided in the guide sleeve, the top end of the limiting column is connected to a circular plate, and the lower end of the limiting column can be inserted into the limiting groove; The limiting column outer sleeve is provided with a second elastic component, the upper end of the second elastic component contacts the lower end surface of the circular plate, and the lower end of the second elastic component contacts the upper end surface of the guide sleeve.

9. The wellhead lubricant preventer locking device according to claim 8, characterized in that: The second elastic component is a second spring, and the second spring is always in a compressed state.

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