A splash-proof coupling device used in a pry bar type minor repair work automation device

Abstract

The present application relates to well repair equipment technical field, disclose a kind of splash-proof make-up device for use in pry block type minor repair operation automation equipment, it is arranged in wellhead platform inside close to manipulator side or automatic hydraulic tong side, including fixed column, rotary reducer, outer sleeve, inner sleeve, hydraulic cylinder, spring, first connecting rod, second connecting rod and core fixing cylinder;Core fixing cylinder includes left half cylinder and right half cylinder which can realize folding and separation;The front end of inner sleeve is equipped with mounting block, the front of mounting block is hinged with left half cylinder and right half cylinder respectively by first hinged shaft, the two ends of first connecting rod are hinged with second connecting rod on both sides by second hinged shaft, and second connecting rod is hinged with left half cylinder and right half cylinder respectively by third hinged shaft.The present application fundamentally solves the problem that pry block type minor repair operation automation equipment is large in size and gravity is deviated to one side, facilitates installation in the narrow space of cluster well group, and ensures the safety of wellhead and surrounding personnel.

Description

Technical Field

[0001] This invention relates to the field of well workover equipment technology, and more specifically to a splash-proof buckle device used in skid-mounted minor workover automation equipment. Background Technology

[0002] Existing skid-mounted automated maintenance equipment has the splash guard and automatic hydraulic tongs arranged on the same side, resulting in a large size. Moreover, because the splash guard and automatic hydraulic tongs are installed as a whole and close to the wellhead, the center of gravity is significantly biased towards the automatic hydraulic tongs side relative to the wellhead. Therefore, when performing automated maintenance operations in the confined space of a cluster well group, the existing skid-mounted automated maintenance equipment is not only inconvenient to install, but also, during the high torque operation of the tubing string or the automatic hydraulic tongs, the overturning moment generated by the eccentric load may exceed the overturning resistance of the base, causing the entire machine to tilt towards the automatic hydraulic tongs side or even overturn. Summary of the Invention

[0003] To address the technical problems of large size and skewed center of gravity in skid-mounted automated minor repair equipment, this invention provides a splash-proof locking device for skid-mounted automated minor repair equipment, the technical solution of which is as follows: A splash-proof locking device is used in a skid-mounted automated minor repair equipment. The skid-mounted automated minor repair equipment includes a wellhead platform, a robotic arm, and an automatic hydraulic clamp. The splash-proof locking device is arranged inside the wellhead platform near either the robotic arm or the automatic hydraulic clamp, and includes a fixed column, a rotary reducer, an outer sleeve, an inner sleeve, a hydraulic cylinder, a spring, a first connecting rod, a second connecting rod, and a core fixing cylinder. The lower part of the fixed column is fixed to the wellhead platform, and the upper part of the fixed column is equipped with a rotary reducer via a base plate. The outer sleeve is fixed above the rotary reducer via a mounting base. The inner sleeve freely passes through the inside of the outer sleeve, and the rear end of the inner sleeve has an outer sleeve limiting block larger than the outer diameter of the outer sleeve. The sleeve has an installation block at the front end; the core fixing cylinder includes a left half cylinder and a right half cylinder that can be closed and separated; the front of the installation block is hinged to the left half cylinder and the right half cylinder respectively through a first hinge shaft, and a support seat is provided above the installation block, with a through hole on the support seat; the two ends of the first connecting rod are hinged to the second connecting rods on both sides through a second hinge shaft, and the second connecting rods are hinged to the left half cylinder and the right half cylinder respectively through a third hinge shaft; the hydraulic cylinder is installed above the sleeve, and the front part of the piston rod of the hydraulic cylinder freely passes through the through hole and is hinged to the middle part of the first connecting rod through the front hinge ear, and an annular protrusion is provided in the middle part of the piston rod, with a spring sleeved on the piston rod and located between the support seat and the annular protrusion.

[0004] Furthermore, the splash-proof buckle device also includes a limiting mechanism, which is fixed to the base plate by bolts to limit the rotation reducer.

[0005] Furthermore, the limiting mechanism includes a set screw, a threaded limiting fixing plate, and a nut. The set screw passes through the threaded limiting fixing plate and is fastened with the nut.

[0006] Furthermore, the rear end of the hydraulic cylinder is hinged to the upper part of the outer casing.

[0007] Furthermore, when the core-fixing cylinder is in the snap-fit ​​state, a core-fixing element is installed on its inner side.

[0008] Furthermore, the patch core is installed via a patch core quick-change shaft.

[0009] Furthermore, the quick-change core replacement shaft is equipped with a locking pin.

[0010] Furthermore, when the core fixing cylinder is in the splash-proof state, the core is replaced with a splash-proof cylinder and its inner seal.

[0011] Furthermore, the splash-proof cylinder is fixed to the core fixing cylinder by bolts.

[0012] Compared with the prior art, the present invention has the following main advantages: 1. This invention fundamentally solves the problems of large size and unilateral center of gravity in skid-mounted automated minor repair equipment by moving the splash-proof locking device from the front of the hydraulic clamp to a designed position, especially... Figure 1 The proposed solution moves the splash-proof locking device to the opposite side of the hydraulic clamp, allowing the hydraulic clamp to move towards the wellhead and shifting the equipment's center of gravity towards the wellhead. This facilitates installation in confined spaces within a cluster of wells and ensures the safety of personnel at and around the wellhead.

[0013] 2. This invention uses the power of a hydraulic cylinder to achieve two actions: closing the wellhead position of the splash-proof locking device and avoiding obstacles, which is simple and efficient.

[0014] 3. This invention operates with precision and produces high-quality results.

[0015] 4. The anti-splash fastening device of the present invention can be arranged in two different positions as appropriate, which is highly flexible. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the layout of the skid-mounted automated minor repair equipment (robotic arm side) according to the present invention; Figure 2 This is a schematic diagram of the layout of the skid-mounted automated minor repair equipment (automatic hydraulic clamp side) according to the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram showing the position of the core in the snap-fit ​​state according to the present invention; Figure 5 This is a schematic diagram showing the positions of the splash-proof cylinder and the sealing element in the splash-proof state of the present invention; Figure 6This is a schematic diagram illustrating the splash-proof locking device at the wellhead position of the present invention. Figure 7 This is a schematic diagram of the wellhead anti-splash coupling device of the present invention being opened; Figure 8 This is a schematic diagram of the wellhead anti-splash coupling device of the present invention being closed; Figure 9 This is a schematic diagram of the limit switch for the rotary reducer of the present invention; In the diagram: 1-Wellhead platform, 2-Manipulator, 3-Splash-proof coupling device, 4-Automatic hydraulic clamp, 5-Oil pipe, 6-Fixing column, 7-Limiting mechanism, 8-Rotary reducer, 9-Outer outer limiting block, 10-Outer outer sleeve, 11-Hydraulic cylinder, 12-Inner sleeve, 13-Spring, 14-Filling core, 15-First connecting rod, 16-Second connecting rod, 17-Filling core fixing cylinder, 18-Filling core quick-change shaft, 19-Pin shaft, 20-First hinge shaft, 21-Second hinge shaft, 22-Third hinge shaft, 23-Base plate, 24-Mounting base, 25-Mounting block, 26-Support seat, 26.1-Through hole, 27-Annular protrusion, 28-Piston rod, 29-Front hinge lug, 30-Seal, 31-Splash-proof cylinder, 32-Top screw, 33-Limiting fixing plate. Detailed Implementation

[0017] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. Example 1

[0018] See Figures 1 to 9A splash-proof locking device for use in a skid-mounted automated minor repair equipment, the skid-mounted automated minor repair equipment including a wellhead platform 1, a robotic arm 2, and an automatic hydraulic clamp 4; the splash-proof locking device is arranged inside the wellhead platform 1 near the robotic arm 2 or the automatic hydraulic clamp 4, and includes a fixed column 6, a rotary reducer 8, an outer sleeve 10, an inner sleeve 12, a hydraulic cylinder 11, a spring 13, a first connecting rod 15, a second connecting rod 16, and a core fixing cylinder 17; the lower part of the fixed column 6 is fixed to the wellhead platform 1, the upper part of the fixed column 6 is mounted on the rotary reducer 8 through a base plate 23, the outer sleeve 10 is fixed above the rotary reducer 8 through a mounting base 24, the inner sleeve 12 freely passes through the inside of the outer sleeve 10, the rear end of the inner sleeve 12 is provided with an outer sleeve limiting block 9 larger than the outer diameter of the outer sleeve 10, and the front end of the inner sleeve 12 is provided with There is an mounting block 25; the core fixing cylinder 17 includes a left half cylinder and a right half cylinder that can be closed and separated; the front of the mounting block 25 is hinged to the left half cylinder and the right half cylinder respectively through the first hinge shaft 20; a support seat 26 is provided above the mounting block 25, and the support seat 26 is provided with a through hole 26.1; the two ends of the first connecting rod 15 are hinged to the second connecting rods 16 on both sides through the second hinge shaft 21; the second connecting rods 16 are hinged to the left half cylinder and the right half cylinder respectively through the third hinge shaft 22; the hydraulic cylinder 11 is installed above the outer sleeve 10; the front part of the piston rod 28 of the hydraulic cylinder 11 freely passes through the through hole 26.1 and is hinged to the middle part of the first connecting rod 15 through the front hinge ear 29; the middle part of the piston rod 28 is provided with an annular protrusion 27; the spring 13 is fitted on the piston rod 28 and is located between the support seat 26 and the annular protrusion 27. Example 2

[0019] See Figures 1 to 9 A splash-proof locking device for use in a skid-mounted automated minor repair equipment, based on the technical solution described in Embodiment 1, further includes a limiting mechanism 7, which is fixed to the base plate 23 by bolts to limit the rotation reducer 8. The limiting mechanism 7 includes a set screw 32, a threaded limiting fixing plate 33, and a nut. The set screw 32 passes through the threaded limiting fixing plate 33 and is tightened with the nut. When the splash-proof locking device rotates to the wellhead, the set screw 32 presses against the vertical part of the mounting base 24 below the outer sleeve 10 to prevent it from rotating. Since the rotation reducer 8 and the mounting base 24 operate together, the rotation reducer 8 can also be limited to continue rotating, thus achieving the purpose of accurately centering the wellhead. Example 3

[0020] See Figures 1 to 9 A splash-proof fastening device for use in skid-type automated minor repair equipment, based on the technical solution described in Embodiment 1, wherein the rear end of the hydraulic cylinder 11 is hinged to the upper part of the outer sleeve 10. Example 4

[0021] See Figures 1 to 9A splash-proof fastening device for use in skid-mounted minor repair automated equipment, based on the technical solution described in Embodiment 1, wherein when the core fixing cylinder 17 is in the fastening state, a core 14 is installed on its inner side; the core 14 is installed via a core quick-change shaft 18; the core quick-change shaft 18 is provided with a locking pin 19; when the core fixing cylinder 17 is in the splash-proof state, the core 14 is replaced with a splash-proof cylinder 31 and its inner sealing element 30; the splash-proof cylinder 31 is fixed to the core fixing cylinder 17 by bolts.

[0022] To enable those skilled in the art to better understand the present invention, its basic working principle is briefly described below: When the rotary reducer 8 drives the outer sleeve 10, the manifold 14, and other components to rotate to the wellhead position, the limiting mechanism 7 acts as a limit. Different models of manifold 14 are used for different tubing types 5. During the coupling process: the anti-splash coupling device 3 is driven by the rotary reducer 8 to rotate from the initial position to the wellhead position. At this time, the wellhead position anti-splash coupling device 3 is in the avoidance state, avoiding interference with the tubing 5. The limiting mechanism 7 plays a mechanical limiting function to ensure accurate positioning. The piston rod 28 of the hydraulic cylinder 11 extends, and the outer limiting block 9 contacts the outer sleeve 10 to form a mechanical limit, forming the wellhead position anti-splash coupling device 3 in the open state. The piston rod 28 continues to extend, compressing the spring 13. At this time, the inner sleeve 12 does not move. The piston rod 28 pushes the first connecting rod 15, and the first connecting rod 15 pushes the second connecting rod 16, so that the second connecting rod 16 moves with the first connecting rod 15 while rotating around the second hinge axis 21. The second connecting rod 16 is connected to the core fixing cylinder 17 through the third hinge axis 22, pushing the core fixing cylinder 17 to rotate inward around the first hinge axis 20. When the piston rod 28 is fully extended, the wellhead position anti-splash coupling device 3 is in the closed state. When the wellhead anti-splash coupling device 3 is closed, spring 13 is compressed. The compression force of spring 13 is always greater than the friction force between inner sleeve 12 and outer sleeve 10. The piston rod 28 of hydraulic cylinder 11 retracts, and inner sleeve 12 remains stationary. At this time, the wellhead anti-splash coupling device 3 is in the open state. The piston rod 28 continues to retract, and the front hinge lug 29 contacts the support seat 26, causing inner sleeve 12 to retract. At this time, the device moves from the open state to the avoidance state. The rotary reducer 8 rotates back to the initial position. When replacing the core 14, simply keep the anti-splash coupling device 3 in the open state, pull out pin 19, then pull out quick-change shaft 18, and then pull out core 14 for replacement. The anti-splash coupling device 3 has two functions: anti-splash and coupling. When the water well is being pulled up, the core 14 needs to be removed and replaced with the sealing element 30 and the anti-splash cylinder 31. The liquid in the tubing 5 flows through the anti-splash coupling device 3 to the wellhead platform 1 for collection.

Claims

1. A splash-proof locking device for use in a skid-mounted automated minor repair equipment, the skid-mounted automated minor repair equipment comprising a wellhead platform, a robotic arm, and an automatic hydraulic clamp, characterized in that... The splash-proof locking device is arranged inside the wellhead platform near the manipulator or the automatic hydraulic clamp. It includes a fixed column, a rotary reducer, an outer sleeve, an inner sleeve, a hydraulic cylinder, a spring, a first connecting rod, a second connecting rod, and a core-filling fixing cylinder. The lower part of the fixed column is fixed to the wellhead platform, and the upper part of the fixed column is equipped with the rotary reducer via a base plate. The outer sleeve is fixed above the rotary reducer via a mounting base. The inner sleeve freely passes through the inside of the outer sleeve. The rear end of the inner sleeve has an outer sleeve limiting block larger than the outer diameter of the outer sleeve, and the front end of the inner sleeve has an mounting block. The core-filling fixing cylinder includes components that enable closing and opening / closing. The mounting block consists of a left and a right half-cylinder; the front of the mounting block is hinged to the left and right half-cylinders respectively via a first hinge shaft; a support seat is provided above the mounting block, and a through hole is provided on the support seat; the two ends of the first connecting rod are hinged to the second connecting rods on both sides via a second hinge shaft, and the second connecting rods are hinged to the left and right half-cylinders respectively via a third hinge shaft; the hydraulic cylinder is mounted above the outer sleeve, and the front part of the piston rod of the hydraulic cylinder freely passes through the through hole and is hinged to the middle part of the first connecting rod via a front hinge lug; an annular protrusion is provided in the middle part of the piston rod, and a spring is fitted on the piston rod and is located between the support seat and the annular protrusion.

2. The splash-proof fastening device for use in skid-mounted minor repair automated equipment according to claim 1, characterized in that, The splash-proof buckle device also includes a limiting mechanism, which is fixed to the base plate by bolts to limit the rotation reducer.

3. A splash-proof fastening device for use in skid-mounted minor repair automated equipment according to claim 2, characterized in that, The limiting mechanism includes a set screw, a threaded limiting fixing plate, and a nut. The set screw passes through the threaded limiting fixing plate and is fastened with the nut.

4. The splash-proof fastening device for use in skid-type automated minor repair equipment according to claim 1, characterized in that, The rear end of the hydraulic cylinder is hinged to the upper part of the outer casing.

5. A splash-proof fastening device for use in skid-mounted minor repair automated equipment according to claim 1, characterized in that, When the core-fixing cylinder is in the snap-fit ​​state, a core-fixing element is installed on its inner side.

6. A splash-proof fastening device for use in skid-mounted minor repair automated equipment according to claim 5, characterized in that, The patch core is installed via a patch core quick-change shaft.

7. A splash-proof fastening device for use in skid-mounted minor repair automated equipment according to claim 6, characterized in that, The quick-change shaft for the core is equipped with a locking pin.

8. A splash-proof fastening device for use in skid-type automated minor repair equipment according to claim 5, characterized in that, When the core fixing cylinder is in the splash-proof state, the core is replaced with the splash-proof cylinder and its inner seal.

9. A splash-proof fastening device for use in skid-mounted minor repair automated equipment according to claim 8, characterized in that, The splash guard is fixed to the core fixing cylinder by bolts.

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