CN220868904U

CN220868904U - Wellhead protection device

Info

Publication number: CN220868904U
Application number: CN202322591048.1U
Authority: CN
Inventors: 张正华; 邓新建; 胡鹏宇; 曾治博
Original assignee: CCFEB Civil Engineering Co Ltd
Current assignee: CCFEB Civil Engineering Co Ltd
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2024-04-30
Anticipated expiration: 2033-09-22

Abstract

The utility model discloses a wellhead protection device, which comprises a protection cover for shielding a wellhead, a lifting mechanism arranged on the protection cover, arc plates in sliding connection with the protection cover and hinged rods with the lifting mechanism and the arc plates at two ends respectively, wherein a plurality of arc plates are driven by the lifting mechanism through the hinged rods and synchronously extend outwards along the radial direction of the protection cover, so that the arc plates are abutted against the inner wall of the wellhead, and the protection cover is positioned at the wellhead; the wellhead protection device disclosed by the utility model has a simple structure, can be suitable for wellheads with different sizes, can effectively ensure the safety of workers, prevents foreign objects from falling into the well, and has important practical value.

Description

Wellhead protection device

Technical Field

The utility model relates to the technical field of wellhead protection, in particular to a wellhead protection device.

Background

In municipal drainage, coal, underground construction, and other industries, it is often desirable to perform downhole operations. However, because the opening of the wellhead is large, workers can easily mistakenly enter the wellhead or fall into the well during operation, and personal injury is caused. In addition, foreign objects such as stones, earth and stones and the like are also easily dropped into the well, affecting the safety and efficiency of the downhole operation.

The existing wellhead protection device is generally characterized in that a plurality of protrusions are arranged on a wellhead, nylon flexible anti-falling nets are arranged on the protrusions, and although the anti-falling problem is solved, the flexible nylon nets are easy to corrode and damage, the reliability is poor, and certain safety risks exist for later anti-falling and underground operation. Therefore, the wellhead protection cover is designed, so that the safety of workers can be effectively guaranteed, foreign objects are prevented from falling into a well, and the wellhead protection cover has important practical value.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: how to provide a well head protector that can be applicable to not unidimensional well head, can effectively ensure workman's safety, prevent that the foreign object from falling into the well.

According to one aspect of the utility model, there is provided a wellhead protection device, comprising a protection cover for shielding a wellhead, a lifting mechanism arranged on the protection cover, an arc plate slidingly connected with the protection cover, and a hinged rod with two ends respectively hinged with the lifting mechanism and the arc plate, wherein a plurality of arc plates are driven by the lifting mechanism through the hinged rod and synchronously extend outwards along the radial direction of the protection cover, so that the arc plates are abutted against the inner wall of the wellhead, and the protection cover is positioned at the wellhead.

Further, elevating system include with the protection casing rotate the lead screw of being connected, with the lead screw rotates the lift post of being connected, arrange in be used for limiting on the protective cover lift post pivoted inserted bar and be used for the drive lead screw pivoted driving piece, the protection casing the lead screw reaches the lift post is coaxial to be laid, set up on the lift post and be used for passing the pole groove of inserted bar, the axis of pole groove with the axis of lift post is parallel, the both ends of articulated lever respectively with the lift post with the arc, the driving piece drive the lead screw rotates, so that the lift post is followed the axial direction of lead screw removes, thereby drive through the articulated lever the arc is followed the radial direction of protection casing removes.

Further, a plurality of first connecting plates used for connecting the hinging rods are uniformly distributed on the outer wall of the lifting column, the arc plates are distributed in one-to-one correspondence with the first connecting plates, second connecting plates used for connecting the hinging rods are distributed on the inner wall of the arc plates, and each first connecting plate is connected with the corresponding second connecting plate on the arc plates through at least one hinging rod.

Further, the arc plate and/or the second connecting plate are/is provided with a T-shaped sliding block, the protective cover is provided with a sliding groove matched with the T-shaped sliding block, and the sliding groove is arranged along the radial direction of the protective cover.

Further, a limiting plate is arranged at one end, far away from the protective cover, of the inserted link.

Further, a spring is sleeved on the inserted link, and two ends of the spring are respectively connected with the lifting column and the limiting plate.

Further, a nut is arranged in the center of the protective cover, an internal thread is arranged on the nut, and the screw rod is in threaded connection with the nut.

Further, the lifting column comprises a first lifting column and a second lifting column, first external threads and second external threads with different rotation directions are arranged on the screw rod, the first lifting column is in threaded connection with the first external threads, the second lifting column is in threaded connection with the second external threads, the driving piece drives the screw rod to rotate, so that the first lifting column and the second lifting column lift along the axial direction of the screw rod to synchronously move in opposite directions or back to drive the arc plate to move along the radial direction of the protective cover through the hinging rod.

Further, the driving piece comprises a rotary table arranged on the screw rod, and a handle is arranged on the rotary table.

Further, a connecting key is arranged on the bottom surface of the turntable, and a key slot matched with the connecting key is arranged on the top surface of the screw rod.

The utility model has the following beneficial effects:

According to the wellhead protection device, when the lifting mechanism moves up and down, the hinge rod is driven to move, and when the included angle between the axis of the hinge rod along the length direction and the radial section of the protective cover is reduced, the arc plate is pushed out by the hinge rod along the radial direction of the protective cover until the arc plate abuts against the inner wall of the wellhead, so that the protective cover is positioned at the wellhead; when the contained angle of articulated pole along its length direction's axis and the radial cross-section of protection casing increases, articulated pole pulling arc is retrieved along the radial direction of protection casing to take off the protection casing from the well head, simple structure can be applicable to not unidimensional well head, can prevent effectively that the workman from hanging into the well head, guarantee workman's personal safety can prevent simultaneously that the foreign object from falling into in the well, guarantees the safety and the efficiency of operation.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is one of the structural schematic views of a wellhead guard of a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the construction of the shield of the embodiment shown in FIG. 1;

FIG. 3 is a schematic view of the elevating mechanism of the embodiment shown in FIG. 1;

FIG. 4 is a second schematic illustration of the wellhead guard of the preferred embodiment of the present utility model;

FIG. 5 is a schematic view of the elevating mechanism of the embodiment shown in FIG. 4;

fig. 6 is a schematic view of the structure of the lifting column of the embodiment shown in fig. 5.

Legend description:

1. A protective cover; 11. a chute; 12. a nut; 2. a lifting mechanism; 22. a screw rod; 221. a key slot; 222. a first external thread; 223. a second external thread; 23. lifting columns; 231. a rod groove; 232. a first connection plate; 233. a first lifting column; 234. a second lifting column; 24. a rod; 25. a driving member; 251. a turntable; 252. a handle; 253. a connecting key; 26. a limiting plate; 27. a spring; 3. an arc-shaped plate; 31. a second connecting plate; 32. a T-shaped slider; 4. and a hinge rod.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be practiced in a number of different ways, as defined and covered below.

As shown in fig. 1, the wellhead protection device of the present embodiment includes a protection cover 1 for shielding a wellhead, a lifting mechanism 2 disposed on the protection cover 1, an arc plate 3 slidably connected with the protection cover 1, and a hinge rod 4 with two ends respectively hinged to the lifting mechanism 2 and the arc plate 3, wherein a plurality of arc plates 3 are driven by the lifting mechanism 2 through the hinge rod 4 and extend outwards synchronously along a radial direction of the protection cover 1, so that the arc plates 3 are abutted against an inner wall of the wellhead, and the protection cover 1 is positioned at the wellhead.

According to the wellhead protection device, when the lifting mechanism 2 moves up and down, the hinge rod 4 is driven to move, when the included angle between the axis of the hinge rod 4 along the length direction and the radial section of the protection cover 1 is reduced, the arc plate 3 is pushed out by the hinge rod 4 along the radial direction of the protection cover 1 until the arc plate 3 abuts against the inner wall of a wellhead, so that the protection cover 1 is positioned at the wellhead; when the contained angle of articulated pole 4 along its length direction's axis and the radial cross-section of protection casing 1 increases, articulated pole 4 pulls arc 3 and withdraws along the radial direction of protection casing 1 to take off protection casing 1 from the well head, simple structure can be applicable to not unidimensional well head, can prevent effectively that the workman from hanging into the well head, ensures workman's personal safety, can prevent simultaneously that the foreign object from falling into the well in, guarantees the safety and the efficiency of operation.

As shown in fig. 2, in this embodiment, the lifting mechanism 2 includes a screw rod 22 rotatably connected to the protection cover 1, a lifting column 23 rotatably connected to the screw rod 22, a plunger 24 disposed on the protection cover 1 and used for limiting rotation of the lifting column 23, and a driving member 25 used for driving rotation of the screw rod 22, where the protection cover 1, the screw rod 22, and the lifting column 23 are coaxially disposed, a rod slot 231 for passing through the plunger 24 is formed on the lifting column 23, an axis of the rod slot 231 is parallel to an axis of the lifting column 23, two ends of the hinge rod 4 are hinged to the lifting column 23 and the arc plate 3, respectively, and when in use, the driving member 25 drives the screw rod 22 to rotate, so that the lifting column 23 moves along an axial direction of the screw rod 22, and due to insertion of the plunger 24 in the rod slot 231, on one hand, rotation of the lifting column 23 along with the screw rod 22 can be avoided; on the other hand can make the reciprocates of lift post 23 more steady, can not control askew, and then drive through articulated rod 4 arc 3 is followed the radial direction of protection casing 1 removes, simple structure, convenient operation.

As shown in fig. 2, in this embodiment, a plurality of first connection plates 232 for connecting the hinge rods 4 are uniformly distributed on the outer wall of the lifting column 23, the arc plates 3 and the first connection plates 232 are distributed in a one-to-one correspondence, and second connection plates 31 for connecting the hinge rods 4 are distributed on the inner wall of the arc plates 3, each first connection plate 232 and the corresponding second connection plate 31 on the arc plates 3 are connected through two hinge rods 4, and the two hinge rods 4 are distributed in parallel, when in use, the forward rotating screw rod 22, the lifting column 23 moves downwards, and the hinge rods 4 push the arc plates 3 to push out along the radial direction of the protection cover 1 until the arc plates 3 are abutted against the inner wall of the wellhead, so that the protection cover 1 is positioned at the wellhead, the protection cover can be applicable to wellheads with different sizes, the safety of workers can be effectively ensured, and foreign objects are prevented from falling into the well; when the wellhead protection device needs to be taken down, the screw rod 22 is reversely rotated, the lifting column 23 moves upwards, the hinging rod 4 pulls the arc-shaped plate 3 to retract along the radial direction of the protective cover 1, and therefore the protective cover 1 is taken down from the wellhead, and the wellhead protection device is simple in structure and convenient to operate. It will be appreciated that the number of articulated bars 4 may be adjusted according to the requirements of use.

As shown in fig. 1 and fig. 3, in this embodiment, the arc plate 3 and/or the second connecting plate 31 is/are provided with a T-shaped slide block 32, the protection cover 1 is provided with a chute 11 adapted to the T-shaped slide block 32, and the chute 11 is arranged along the radial direction of the protection cover 1, so as to avoid the arc plate 3 falling due to gravity, and ensure that the arc plate 3 moves steadily along the radial direction of the protection cover 1.

In this embodiment, as shown in fig. 2, a limiting plate 26 is disposed on an end of the insert rod 24 away from the protection cover 1 to prevent the lifting column 23 from sliding off the insert rod 24.

In this embodiment, as shown in fig. 2, a spring 27 is sleeved on the insert rod 24, two ends of the spring 27 are respectively connected with the lifting column 23 and the limiting plate 26, and when the lifting column 23 moves down, the spring 27 is compressed; when the lifting column 23 moves upwards, the lifting column 23 can be assisted to reset.

As shown in fig. 2 and 3, in this embodiment, a nut 12 is disposed at the center of the protection cover 1, an internal thread is disposed on the nut 12, the screw rod 22 is screwed with the nut 12, and the screw rod 22 is rotationally connected with the top end of the lifting column 23, and when in use, the screw rod 22 is rotated to make the screw rod 22 move up and down relative to the axial direction of the nut 12, so as to drive the lifting column 23 to move up and down, and then drive the arc plate 3 to move along the radial direction of the protection cover 1 through the hinge rod 4.

As shown in fig. 4, 5 and 6, in this embodiment, the lifting column 23 includes a first lifting column 233 and a second lifting column 234, first external threads 222 and second external threads 223 with different rotation directions are disposed on the screw rod 22, the first lifting column 233 is screwed with the first external threads 222, the second lifting column 234 is screwed with the second external threads 223, the driving member 25 drives the screw rod 22 to rotate, so that the first lifting column 233 and the second lifting column 234 move in opposite directions or opposite directions in synchronization along the axial direction of the screw rod 22, so that the arcuate plate 3 is driven by the hinge rod 4 to move in the radial direction of the protective cover 1, the first connecting plate 232 on the first lifting column 233 is connected with the second connecting plate 31 on the left arcuate plate 3 through one hinge rod 4, and the first connecting plate 232 on the second lifting column 234 is connected with the second connecting plate 31 on the left arcuate plate 3 through another hinge rod 4, and the hinge rod 4 is connected with the second connecting plate 4 on the first lifting column 233 through the hinge rod 4; when the protective cover is used, the screw rod 22 is rotated forward, the first lifting column 233 and the second lifting column 234 are close to each other in opposite directions, the hinging rod 4 pushes the arc plate 3 to push out along the radial direction of the protective cover 1 until the arc plate 3 abuts against the inner wall of a wellhead, so that the protective cover 1 is positioned at the wellhead, and the protective cover is applicable to the wellheads with different sizes, can effectively ensure the safety of workers and prevent foreign objects from falling into the well; when the wellhead protection device needs to be taken down, the screw rod 22 is reversely rotated, the first lifting column 233 and the second lifting column 234 are away from each other, the hinging rod 4 pulls the arc plate 3 to retract along the radial direction of the protective cover 1, and therefore the protective cover 1 is taken down from the wellhead, and the wellhead protection device is simple in structure and convenient to operate.

As shown in fig. 6, in this embodiment, the driving member 25 includes a rotary table 251 disposed on the screw rod 22, and a handle 252 is disposed on the rotary table 251, so that when in use, a worker drives the screw rod 22 to rotate through the handle 252 on the rotary table 251, and the device has a simple structure, does not need an external power source, and is convenient to use. Alternatively, the driving member 25 may be a motor, and the screw 22 is driven to rotate by the motor, so that labor intensity of personnel can be reduced.

As shown in fig. 6, in this embodiment, a connection key 253 is disposed on the bottom surface of the turntable 251, and a key slot 221 adapted to the connection key 253 is disposed on the top surface of the screw 22; the connecting key 253 is inserted into the key groove 221, so that the screw rod 22 can be driven to rotate through the turntable 251; conversely, the turntable 251 can be taken down, and the structure is simple and the operation is convenient. Alternatively, the connection key 253 is a polygonal column and the key groove 221 is a prismatic groove.

In this embodiment, laid anti-slip structure on the arc 3 to increase the frictional force of arc 3 and well head internal wall, guarantee well head protector stable. Optionally, the anti-slip structure is an anti-slip stripe or bump.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A wellhead protection device is characterized in that,

Comprises a protective cover (1) for shielding a wellhead, a lifting mechanism (2) arranged on the protective cover (1), an arc-shaped plate (3) in sliding connection with the protective cover (1) and a hinged rod (4) with two ends respectively hinged with the lifting mechanism (2) and the arc-shaped plate (3),

The arc plates (3) are driven by the lifting mechanism (2) through the hinging rods (4) and synchronously extend outwards along the radial direction of the protective cover (1), so that the arc plates (3) are abutted against the inner wall of the wellhead, and the protective cover (1) is positioned at the wellhead.

2. The wellhead protection device of claim 1, wherein,

The lifting mechanism (2) comprises a screw rod (22) rotationally connected with the protective cover (1), a lifting column (23) rotationally connected with the screw rod (22), a plug rod (24) which is arranged on the protective cover (1) and used for limiting the rotation of the lifting column (23) and a driving piece (25) used for driving the screw rod (22) to rotate,

The protective cover (1), the screw rod (22) and the lifting column (23) are coaxially arranged, a rod groove (231) for penetrating through the inserted rod (24) is formed in the lifting column (23), the axis of the rod groove (231) is parallel to the axis of the lifting column (23),

The two ends of the hinging rod (4) are respectively hinged with the lifting column (23) and the arc plate (3), the driving piece (25) drives the screw rod (22) to rotate, so that the lifting column (23) moves along the axial direction of the screw rod (22), and the arc plate (3) is driven to move along the radial direction of the protective cover (1) through the hinging rod (4).

3. The wellhead protection device of claim 2, wherein,

A plurality of first connecting plates (232) for connecting the hinging rods (4) are uniformly distributed on the outer wall of the lifting column (23), the arc plates (3) are distributed in one-to-one correspondence with the first connecting plates (232), second connecting plates (31) for connecting the hinging rods (4) are distributed on the inner wall of the arc plates (3),

Each first connecting plate (232) is connected with the corresponding second connecting plate (31) on the arc-shaped plate (3) through at least one hinging rod (4).

4. A wellhead protection device according to claim 3, characterised in that,

T-shaped sliding blocks (32) are arranged on the arc-shaped plates (3) and/or the second connecting plates (31), sliding grooves (11) matched with the T-shaped sliding blocks (32) are formed in the protective cover (1), and the sliding grooves (11) are arranged along the radial direction of the protective cover (1).

5. The wellhead protection device of claim 4, wherein,

And a limiting plate (26) is arranged at one end, far away from the protective cover (1), of the inserted link (24).

6. The wellhead protection device of claim 5, wherein,

The inserting rod (24) is sleeved with a spring (27), and two ends of the spring (27) are respectively connected with the lifting column (23) and the limiting plate (26).

7. Wellhead protection device according to any of claims 2 to 6, characterised in that,

The center of the protective cover (1) is provided with a screw nut (12), the screw nut (12) is provided with an internal thread, and the screw rod (22) is in threaded connection with the screw nut (12).

8. The wellhead guard of claim 3 or 4, wherein,

The lifting column (23) comprises a first lifting column (233) and a second lifting column (234), a first external thread (222) and a second external thread (223) with different rotation directions are arranged on the screw rod (22), the first lifting column (233) is in threaded connection with the first external thread (222), the second lifting column (234) is in threaded connection with the second external thread (223),

The driving piece (25) drives the screw rod (22) to rotate, so that the first lifting column (233) and the second lifting column (234) synchronously move in opposite directions or back to back along the axial direction of the screw rod (22), and the arc-shaped plate (3) is driven to move along the radial direction of the protective cover (1) through the hinging rod (4).

9. The wellhead protection device of claim 2, wherein,

The driving piece (25) comprises a rotary table (251) arranged on the screw rod (22), and a handle (252) is arranged on the rotary table (251).

10. The wellhead protection device of claim 9, wherein the device comprises a housing,

A connecting key (253) is arranged on the bottom surface of the rotary table (251), and a key groove (221) matched with the connecting key (253) is formed in the top surface of the screw rod (22).