A new type of drill rig elevating bail pin

Abstract

The present invention relates to the technical field of locking devices for oil drilling rig elevators, and specifically to a new type of drilling rig elevator latch. The lower end of the short side of the latch handle is welded to the outer wall of the cylinder. The lifting ring is threadedly connected to the upper end of the short side of the latch handle. An anti-collision magnet is also embedded and connected to the upper end of the short side of the latch handle. An inductive sensor, a signal acquisition and wireless transmitter, and a lithium battery are connected inside the cylinder. The detection performance of the present invention is sensitive and reliable, eliminating the generation of false signals of mechanical contacts, and can effectively prevent the occurrence of "single lifting ring" accidents; it can meet different downhole operation requirements, save energy and protect the environment; the latch is explosion-proof as a whole, can meet the harsh environment of oil drilling rigs, and is treated with sealant after full welding, with the functions of waterproof, oil-proof and mud-proof, and has a high protection level; it is simple to install, the lower end of the latch handle has a chamfer for easy positioning, no other auxiliary equipment is required, and disassembly and maintenance are convenient; the on-site use effect is remarkable, the performance is reliable and stable, improving the drilling efficiency and protecting the safety of personnel.

Description

Technical Field

[0001] The present invention relates to the technical field of locking devices for elevators of oil drilling rigs, and particularly to a new type of elevator pin for a drilling rig. Background Art

[0002] During the processes of oil drilling and downhole operations, the driller and the wellhead personnel have a high labor intensity and are prone to fatigue, which can easily cause operational mistakes. Therefore, "single sling" accidents often occur, posing risks to the personal safety of wellhead personnel and causing serious economic losses.

[0003] Currently, in the existing sling pin technology, most determine whether the pin is inserted by whether the two induction contacts of the travel switch are in contact with the elevator. However, in the environment of an oil drilling rig, oil stains and mud will cover or freeze the contacts, making disassembly inconvenient and affecting the accuracy of detection, which may cause the single sling to be stressed, resulting in accidents such as the bending or breaking of the pipe string during the hoisting process and causing casualties and equipment damage. Summary of the Invention

[0004] The purpose of the present invention is to provide a new type of elevator pin for a drilling rig, which integrates the functions of insertion detection and wireless transmission, to prevent the occurrence of "single sling" accidents.

[0005] To solve the above technical problems, a new type of elevator pin for a drilling rig of the present invention includes a pin handle, a sling, and a cylinder. The pin handle is composed of a long side and a short side to form an L shape. The lower end of the short side of the pin handle is welded to the outer wall of the cylinder. The sling is threadedly connected to the upper end of the short side of the pin handle. A collision-proof magnet is also embedded and connected to the upper end of the short side of the pin handle. After the pin is inserted into the elevator, it is reliably fixed to the elevator by magnetic force and is not easily detached under high-altitude vibration.

[0006] Furthermore, an inductive sensor, a signal acquisition and wireless transmitter, and a lithium battery are connected inside the cylinder. The inductive sensor, the signal acquisition and wireless transmitter, and the lithium battery are electrically connected. A protective shell is connected inside the cylinder. The inductive sensor, the signal acquisition and wireless transmitter, and the lithium battery are fixedly connected inside the protective shell. The inductive sensor is arranged at the front end of the signal acquisition and wireless transmitter, the lithium battery is arranged at the rear end of the signal acquisition and wireless transmitter, and pads are connected between the inductive sensor, the signal acquisition and wireless transmitter, and the lithium battery in pairs.

[0007] Furthermore, the outer wall of the protective shell is closely attached to the inner wall of the cylinder. The front end of the protective shell is provided with a boss, and the boss at the front end of the protective shell is flush with the inner hole plane at the front end of the cylinder.

[0008] Furthermore, the inductive sensor is threadedly connected to the protective shell, and the inductive sensor sinks into the protective shell by 2 mm. Sinking into the boss of the protective shell by 2 mm can ensure the maximum detection distance.

[0009] Furthermore, a latch end cap is connected to the rear end of the cylinder. The latch end cap is threadedly connected to the cylinder, and a relaxation gasket is provided on the connection thread between the latch end cap and the cylinder. The latch end cap has a hollow structure. The hollow structure of the latch end cap minimizes the weight of the latch to the greatest extent possible.

[0010] Furthermore, the latch handle and the cylinder are fully welded by argon arc, and silicone is applied to the weld seam. The latch handle and the lifting ring are fully welded by argon arc, and silicone is applied to the weld seam. Silicone is applied to the weld seam. The argon arc full welding is required to be firmly welded, and the weld seam is uniform and smooth; it is convenient to connect to the high-altitude fall prevention device, and the silicone has the performance of sealing and waterproofing.

[0011] Furthermore, the material of the latch handle is stainless steel, the material of the lifting ring is stainless steel, the material of the cylinder is stainless steel, and the material of the latch end cap is stainless steel.

[0012] Furthermore, the material of the cushion block is polyoxymethylene, and the material of the protective shell is polyoxymethylene.

[0013] The latch handle 1 of the present invention is formed by one-time processing with a mold. The arc shape at the upper end is easy to take out the latch, and the chamfer at the lower end is easy to insert and position.

[0014] The beneficial effects of the present invention are as follows: It includes a latch handle, a lifting ring, and a cylinder. The lower end of the short side of the latch handle is welded to the outer wall of the cylinder. The lifting ring is threadedly connected to the upper end of the short side of the latch handle. A collision-proof magnet is also embedded and connected to the upper end of the short side of the latch handle. An inductive sensor, a signal acquisition and wireless transmitter, and a lithium battery are connected inside the cylinder. The inductive sensor, the signal acquisition and wireless transmitter, and the lithium battery are fixedly connected inside the protective shell. The detection performance of the present invention is sensitive and reliable, eliminating the generation of mechanical contact error signals, and effectively preventing the occurrence of "single lifting ring" accidents; the design of the long power supply duration of the lithium battery and the low energy consumption of the detection system can meet different downhole operation requirements, saving energy and being environmentally friendly; the latch is explosion-proof as a whole, can meet the harsh environment of oil drilling rigs, and is sealed with glue after full welding, having the functions of waterproofing, oil-proofing, and anti-mud, with a high protection level; it is simple to install, the lower end of the stainless steel latch handle has a chamfer for easy positioning, no other auxiliary equipment is required, and disassembly and maintenance are convenient; the on-site use effect is remarkable, the performance is reliable and stable, improving the drilling efficiency and protecting the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a top view of the structure of the present invention.

[0017] In the figure: 1. Bolt handle; 2. Anti-collision magnet; 3. Hoisting ring; 4. Cylinder; 5. Bolt end cap; 6. Lithium battery; 7. Signal acquisition and wireless transmitter; 8. Polyoxymethylene spacer; 9. Polyoxymethylene protective shell; 10. Inductive sensor. Detailed implementation mode

[0018] As Figure 1 - Figure 2 described, a new type of drilling rig elevating bail pin of the present invention includes a bolt handle 1, a hoisting ring 3 and a cylinder 4. The bolt handle 1 is composed of a long side and a short side to form an L shape. The lower end of the short side of the bolt handle 1 is welded to the outer wall of the cylinder 4. The hoisting ring 3 is threadedly connected to the upper end of the short side of the bolt handle 1. An anti-collision magnet 2 is also embedded and connected to the upper end of the short side of the bolt handle 1. After the bolt is inserted into the elevating bail, the bolt is reliably fixed to the elevating bail by magnetic force and is not easily detached under high-altitude vibration.

[0019] Furthermore, an inductive sensor 10, a signal acquisition and wireless transmitter 7 and a lithium battery 6 are connected inside the cylinder 4. The inductive sensor 10, the signal acquisition and wireless transmitter 7 and the lithium battery 6 are electrically connected. A protective shell 9 is connected inside the cylinder 4. The inductive sensor 10, the signal acquisition and wireless transmitter 7 and the lithium battery 6 are fixedly connected inside the protective shell 9. The inductive sensor 10 is arranged at the front end of the signal acquisition and wireless transmitter 7, and the lithium battery 6 is arranged at the rear end of the signal acquisition and wireless transmitter 7. Spacers 8 are connected between the inductive sensor 10, the signal acquisition and wireless transmitter 7 and the lithium battery 6 pairwise.

[0020] Furthermore, the outer wall of the protective shell 9 is closely attached to the inner wall of the cylinder 4. A convex platform is provided at the front end of the protective shell 9, and the convex platform at the front end of the protective shell 9 is flush with the inner hole plane at the front end of the cylinder 4.

[0021] Furthermore, the inductive sensor 10 is threadedly connected to the protective shell 9, and the inductive sensor 10 sinks into the protective shell 9 by two millimeters. Sinking into the convex platform of the protective shell by 2 mm can ensure the maximum detection distance.

[0022] Furthermore, a bolt end cap 5 is connected to the rear end of the cylinder 4. The bolt end cap 5 is threadedly connected to the cylinder 4. A relaxation gasket is provided on the connection thread between the bolt end cap 5 and the cylinder 4. The bolt end cap 5 has a hollow structure. The bolt end cap 5 has a hollow structure to minimize the weight of the bolt to the greatest extent.

[0023] Furthermore, the bolt handle 1 and the cylinder 4 are fully welded by argon arc, and silicone is applied to the weld seam. The bolt handle 1 and the hoisting ring 3 are fully welded by argon arc, and silicone is applied to the weld seam. It is required that the argon arc full welding is firm and the weld seam is uniform and smooth; it is convenient to connect the high-altitude fall prevention device, and the silicone has the performance of sealing and waterproofing.

[0024] Furthermore, the material of the bolt handle 1 is stainless steel, the material of the lifting ring 3 is stainless steel, the material of the cylinder 4 is stainless steel, and the material of the bolt end cap 5 is stainless steel.

[0025] Furthermore, the material of the cushion block 8 is polyoxymethylene, and the material of the protective shell 9 is polyoxymethylene.

[0026] The bolt handle 1 of the present invention is formed by one-time processing with a mold. The arc at the upper end is easy to take out the bolt, and the chamfer at the lower end is easy to insert and position.

[0027] During use, first embed the anti-collision magnet 2 into the end of the bolt handle 1 and perform full welding on the top; perform full welding between the bolt handle 1, the lifting ring 3 and the cylinder 4. Among them, the bolt handle 1 and the cylinder 4 are in concave-convex fit at the tangent of the arc surface, increasing the contact area and having high welding strength.

[0028] Integrate and install the lithium battery 6, the signal acquisition and transmitter 7, the cushion block 8 and the inductive sensor 10 as a whole into the protective shell 9. The protective shell 9 is inserted from the rear end of the cylinder 4. The front convex platform of the protective shell 9 extends into the front inner hole of the cylinder 4 and is flush with the plane. The inductive sensor 10 and the protective shell 9 are screwed tightly. The inductive sensor 10 sinks 2 mm into the convex platform of the protective shell 9 to ensure the maximum detection distance of the sensor.

[0029] Finally, the bolt end cap 5 and the cylinder 4 are tightened by threaded fit, and a lock washer is provided between them. At the same time, the lifting ring 3 is connected to the high-altitude anti-falling device through a stainless steel band mother spring buckle and a pressed steel wire rope to prevent the safety hazard caused by the bolt falling off at high altitude during vibration.

[0030] When the bolts in the double lifting clamps are all inserted in place, the inductive sensor 10 detects a signal. The signal acquisition and transmitter 7 wirelessly transmits the collected signal to the wireless receiver in the driller control box. The PLC module in the control box performs logical analysis, judgment, and amplification, and transmits it to the winch air circuit to control the torque output of the winch, playing a protective role for the lifting clamp.

[0031] The detection performance of the present invention is sensitive and reliable, eliminating the generation of mechanical contact error signals, and can effectively prevent the occurrence of "single lifting ring" accidents; the design of long lithium battery power supply time and low energy consumption of the detection system can ensure different downhole operation requirements, energy conservation and environmental protection; the bolt is explosion-proof as a whole, can meet the harsh environment of oil drilling rigs, and is sealed with glue after full welding, with the functions of waterproof, oil-proof and mud-proof, and has a high protection level; the installation is simple, the lower end of the stainless steel bolt handle has a chamfer for easy positioning, no other auxiliary equipment is required, and the disassembly and maintenance are convenient; the on-site use effect is remarkable, the performance is reliable and stable, improving the drilling efficiency and protecting the safety of personnel.

Claims

1. A new type of drill rig elevating bail pin, Characterized in that: It includes a pin handle (1), a lifting ring (3) and a cylinder (4). The pin handle (1) is composed of a long side and a short side to form an L shape. The lower end of the short side of the pin handle (1) is welded to the outer wall of the cylinder (4). The lifting ring (3) is threadedly connected to the upper end of the short side of the pin handle (1). An anti-collision magnet (2) is also embedded and connected to the upper end of the short side of the pin handle (1); An inductive sensor (10), a signal acquisition and wireless transmitter (7) and a lithium battery (6) are connected inside the cylinder (4). The inductive sensor (10), the signal acquisition and wireless transmitter (7) and the lithium battery (6) are electrically connected. A protective shell (9) is connected inside the cylinder (4). The inductive sensor (10), the signal acquisition and wireless transmitter (7) and the lithium battery (6) are fixedly connected inside the protective shell (9). The inductive sensor (10) is arranged at the front end of the signal acquisition and wireless transmitter (7), and the lithium battery (6) is arranged at the rear end of the signal acquisition and wireless transmitter (7). Spacers (8) are connected between the inductive sensor (10), the signal acquisition and wireless transmitter (7) and the lithium battery (6) in pairs; The outer wall of the protective shell (9) is closely attached to the inner wall of the cylinder (4). A convex platform is provided at the front end of the protective shell (9). The convex platform at the front end of the protective shell (9) is flush with the inner hole plane at the front end of the cylinder (4); The inductive sensor (10) is threadedly connected to the protective shell (9), and the inductive sensor (10) sinks into the protective shell (9) by 2 mm; The rear end of the cylinder (4) is connected with a pin end cover (5). The pin end cover (5) is threadedly connected to the cylinder (4). A relaxation gasket is provided on the connection thread between the pin end cover (5) and the cylinder (4). The pin end cover (5) has a hollow structure.

2. The new type of drill rig elevating bail pin according to claim 1, Characterized in that: The pin handle (1) and the cylinder (4) are welded by full argon arc welding, and silicone is applied to the weld seam. The pin handle (1) and the lifting ring (3) are welded by full argon arc welding, and silicone is applied to the weld seam.

3. The new type of drill rig elevating bail pin according to claim 2, Characterized in that: The material of the pin handle (1) is stainless steel, the material of the lifting ring (3) is stainless steel, the material of the cylinder (4) is stainless steel, and the material of the pin end cover (5) is stainless steel.

4. The new type of drill rig elevating bail pin according to claim 1, Characterized in that: The material of the spacer (8) is polyoxymethylene, and the material of the protective shell (9) is polyoxymethylene.

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