A kind of oil drilling rig safety detection device and monitoring method

Abstract

The present invention discloses a safety detection device and monitoring method for oil drilling rigs, which relates to the technical field of oil exploration and exploitation, and includes: a detection mechanism that acts on a movable ring to move upward, and during the movement, the detection component generates ultrasound, and then receives and analyzes these signals to determine whether there is a crack inside the drill pipe, thereby completing the detection process. In the present invention, during the drilling process, the drill pipe rotates at high speed and generates heat, which is combined with the heat conduction of the heat conduction plate to form a high-temperature area, and the high-temperature and high-pressure steam is used to push the movable ring up and down to block the flow of water. Under the action of gravity, the movable ring is kept moving downward, and this process is continued. The movable ring is kept to drive the detection component to move up and down back and forth, and the inside of the drill pipe can be continuously monitored and processed, so that potential problems such as cracks and defects can be discovered and warned in time, and transmitted to external receiving equipment to reduce safety hazards.

Description

Technical Field

[0001] The invention relates to the technical field of oil exploration and exploitation, and in particular to an oil drilling rig safety detection device and a monitoring method. Background Art

[0002] Oil drilling rigs play an important role in oil exploration and exploitation, and are one of the key equipment to ensure energy supply. Through precise operation and scientific management, oil drilling rigs can efficiently complete drilling tasks and contribute to the development of the oil industry. At the same time, with the advancement of science and technology and the improvement of environmental awareness, the design and manufacture of oil drilling rigs are also paying more and more attention to efficiency, energy saving and environmental protection. In this process, drill pipes occupy an important position in drilling.

[0003] As a core component in drilling operations, drill pipes must withstand complex and severe working conditions during the drilling process, including continuous tensile force, violent torsional movement, high-frequency vibration, and strong friction and erosion of high-pressure mud. These extreme conditions greatly test the durability and integrity of the drill pipe. If potential defects such as fine cracks, pits, and even perforations on the drill pipe are not discovered and repaired in time, it will directly threaten the safety of drilling operations and may cause the drill pipe to break suddenly, thereby causing damage to the wellbore, production interruption, and even more serious safety accidents.

[0004] Traditional drill pipe inspection methods often rely on regularly sending the drill pipes in use to professional inspection agencies. During this process, the drill pipes need to undergo tedious manual cleaning to remove mud and other impurities attached to the surface, and then be carefully inspected by electromagnetic excitation flaw detection equipment with the assistance of specific mechanical devices. Although this method can effectively identify some defects, the entire process is time-consuming and costly. In addition, the round-trip transportation of a large number of drill pipes not only delays the progress of the drilling project, but also significantly increases the project cost, bringing great inconvenience and restrictions to on-site operations. Summary of the invention

[0005] The purpose of the present invention is to provide an oil drilling rig safety detection device and monitoring method to solve the problems proposed in the above background technology that the traditional detection method is relatively complicated, the process is time-consuming and costly, and the round-trip transportation of a large number of drill pipes not only delays the progress of the drilling project, but also brings great restrictions to on-site operations.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A safety detection device for oil drilling rigs, comprising: a support mechanism, a main body mechanism, a vibration reduction mechanism and a detection mechanism,

[0007] The supporting mechanism is used to move the whole equipment, and then driven by four cylinder bodies to keep four supporting pads in contact with the ground to maintain the stability of the equipment;

[0008] The main body is installed on the top of the support mechanism, with the rotating shaft as the rotating point and the derrick hydraulic cylinder as the driving force, which can keep the derrick body and the components fixed to it rotating and maintain a vertical state with the ground, so as to facilitate the subsequent equipment operation;

[0009] The vibration reduction mechanism can keep the contact plate in contact with the vibration reduction mechanism to complete the vibration reduction process in the folded state;

[0010] The detection mechanism is fixedly installed at the bottom of the output end of the large drive motor. When the drill pipe is in use, it generates high temperature itself, which heats the water inside the water tank to form steam. The high-temperature and high-pressure gas pushes the movable ring and the detection component upward. During the movement, the detection component generates ultrasound. When the ultrasound encounters defects inside the drill pipe, reflection and refraction will occur. The reflected wave will return along the original path and be received by the detector. Subsequently, by analyzing the transmission time, amplitude characteristics and other parameters of the reflected wave, the location, size and type of the defect can be determined, thereby completing the detection process.

[0011] Preferably, the detection mechanism comprises a drill pipe inner tube and a movable ring;

[0012] The outer wall of the drill pipe inner tube is fixedly connected with two sealing plates, a set of one-way air valves are fixedly inserted inside the two sealing plates, and the outer wall of the drill pipe outer tube is fixedly connected between the two sealing plates;

[0013] A heat conducting plate is fixedly embedded on one side of the inner surface wall of the drill pipe outer tube, and a heat insulating plate is fixedly embedded on the other side of the inner surface wall of the drill pipe outer tube. Two inner grooves are formed between the drill pipe inner tube, two sealing plates and the drill pipe outer tube.

[0014] Preferably, the drill pipe inner tube and the drill pipe outer tube are fixedly connected to a water tank, one side of the top of the water tank is fixedly connected to a group of water pumps, and the other side of the top of the water tank is fixedly connected to a one-way water valve.

[0015] Preferably, a group of detection components are fixedly installed on the inner surface wall and the outer surface wall of the movable ring, two movable grooves are opened on the top of the movable ring, and the outer surfaces of the two movable grooves are slidably embedded in the interior of the two sealing plates.

[0016] Preferably, the main mechanism includes two adjustment frames, a derrick body is fixedly connected between one side of the outer walls of the two adjustment frames, two contact plates are fixedly connected to one side of the outer wall of the derrick body, a cylinder B is fixedly installed on the top of the derrick body, a large driving motor is fixedly connected to the telescopic end of the cylinder B, and the rotating end of the large driving motor is fixedly installed to the top of the drill pipe inner tube by screws.

[0017] Preferably, a side connecting plate is fixedly connected to one side of the outer wall of the large driving motor, and one side of the outer wall of the side connecting plate is slidably limited inside the derrick body through a group of sliders, and two rotating shafts are movably inserted inside the derrick body.

[0018] Preferably, the support mechanism comprises a drilling rig winch and two fixed shafts;

[0019] Four cylinder bodies are fixedly inserted inside the drilling rig winch, and the telescopic ends of the four cylinder bodies are fixedly connected to support pads;

[0020] The outer walls of the two fixed shafts are movably sleeved with a derrick hydraulic cylinder, and the two fixed shafts are fixedly installed with the inner wall of the drilling rig winch, the telescopic ends of the two derrick hydraulic cylinders are fixedly connected with a driving shaft, and the outer walls of the two driving shafts are rotatably connected to the inside of the adjustment frame.

[0021] Preferably, two vertical plates are fixedly connected to the bottom of the inner wall of the drilling rig winch, vertical plates are fixedly installed on the tops of the two vertical plates, and the tops of the two vertical plates are respectively fixedly connected to the bottom of the rotating shaft.

[0022] Preferably, the vibration reduction mechanism comprises two fixed frames, each of which is preset with a group of embedding grooves inside, the inner surface walls of the two groups of embedding grooves are slidably embedded with embedding plates, the outer surface walls of the two groups of embedding plates are fixedly connected with adjustment plates, the tops of the two adjustment plates are fixedly installed with contact pads, and the tops of the two contact pads are respectively in contact with one side of the outer wall of the contact plate, and the bottoms of the inner walls of the two fixed frames are fixedly installed with air cushions, and the bottoms of the two adjustment plates are respectively in contact with the tops of the air cushions.

[0023] A detection method for a petroleum drilling rig safety detection device comprises the following steps:

[0024] Step 1: Before using the equipment, first drive the equipment support mechanism to the specified position, start the cylinder body respectively, so as to support the drilling rig winch and the components fixed thereto, and then start the two derrick hydraulic cylinders, and because they are respectively connected to the outer wall of the fixed shaft and the two drive shafts are connected to the inside of the adjustment frame, the derrick body can be kept rotating with the rotating shaft as the base point, so as to keep the derrick body and the components fixed thereto vertical to the ground, and make preliminary preparations for the operation of the equipment;

[0025] Step 2: Then, the detection mechanism is installed on the rotating end of the large driving motor by screws, and the large driving motor is started to drive the detection mechanism to rotate, while the cylinder B at the top keeps moving downward at a certain speed. After the bottom rotating head of the detection mechanism contacts the soil layer, the exploitation of the oil well is completed;

[0026] Step 3, when the drill pipe and the soil layer are rotating, the outer wall thereof generates high temperature in the rotating state, and under the action of the heat conducting plate, the heat can be transferred to the inside, thereby forming a high-temperature space in one of the two inner grooves, and at the same time, a group of water pumps can extract the moisture inside the water tank, and after contacting with the high-temperature space, high-pressure gas is formed, and then under the action of the high-pressure gas, the movable ring can be pushed to move upward, and when the movable ring is slidably embedded in the two sealing plates, there is a retractable sealing film inside, which effectively seals the notch of the telescopic connection to avoid the connection between the two inner grooves;

[0027] Step 4. During the upward movement of the movable ring, ultrasonic waves are generated by a group of detection components respectively arranged on the inner and outer walls. The ultrasonic waves are reflected or scattered when they encounter cracks or defects when propagating inside the drill pipe. By receiving and analyzing these signals, it is determined whether there is a crack inside the drill pipe. Then, when the movable ring reaches the top, it touches the controller and starts the one-way air valve, which can transfer the high-temperature and high-pressure gas to the other space of the two inner grooves. Because the other space isolates the heat from its outside through the insulation board, the high-temperature and high-pressure steam is released into a lower pressure environment. When the pressure is reduced, the steam will quickly condense to form water droplets and be transferred to the inside of the one-way water valve. Finally, the water is transferred back to the inside of the water tank through the one-way water valve to form an effective cycle.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In the present invention, during the drilling process, the high-speed rotation of the drill pipe generates heat, which, combined with the heat conduction of the heat conducting plate, forms a high-temperature area. High-temperature and high-pressure steam is used to push the movable ring to move up and down, thereby blocking the flow of water. Under the action of gravity, the movable ring is kept moving downward. By continuing this process, the movable ring drives the detection component to move up and down back and forth, and the interior of the drill pipe can be continuously monitored and processed, thereby timely discovering and warning potential problems such as cracks and defects, and transmitting them to external receiving equipment to reduce safety hazards.

[0030] 2. In the present invention, the opening of the one-way air valve can introduce high-temperature and high-pressure steam into another space. In an environment where the pressure drops suddenly, the steam condenses to form water droplets and collects them. This design together constitutes an intelligent water circulation system, which realizes efficient energy utilization and continuous and stable operation of the equipment. The high-temperature and high-pressure steam condenses into water droplets and then flows back to the water tank to form an effective circulation process. The entire operation process is highly automated, which reduces manual intervention, operation difficulty and labor intensity. At the same time, the modular design of the equipment makes maintenance and overhaul work more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1It is a schematic diagram of the main structure of a safety detection device for oil drilling rigs of the present invention;

[0032] Figure 2 It is a partial structural schematic diagram of a safety detection device for oil drilling rigs of the present invention;

[0033] Figure 3 It is a partial plan view of a safety detection device for oil drilling rigs of the present invention;

[0034] Figure 4 This is a three-dimensional exploded view of the structure of a vibration reduction mechanism in a safety detection device for a petroleum drilling rig according to the present invention;

[0035] Figure 5 This is a cutaway stereoscopic view of a detection mechanism in a safety detection device for an oil drilling rig of the mold of the present invention;

[0036] Figure 6 It is a top plan view of the detection mechanism part of a safety detection device for oil drilling rigs of the present invention;

[0037] Figure 7 It is a front plan view of a detection mechanism in a safety detection device for oil drilling rigs of the present invention;

[0038] Figure 8 It is a partial three-dimensional diagram of a detection mechanism in a safety detection device for oil drilling rigs of the present invention;

[0039] Fig. 9 The present invention is a three-dimensional exploded view of the internal part of a detection mechanism in a safety detection device for oil drilling rigs.

[0040] In the figure: 1. Support mechanism; 11. Drilling rig winch; 12. Cylinder body; 13. Support pad; 14. Fixed shaft; 15. Derrick hydraulic cylinder; 16. Drive shaft; 17. Vertical plate; 2. Main mechanism; 21. Adjustment frame; 22. Derrick body; 23. Cylinder B; 24. Large drive motor; 25. Side connecting plate; 26. Contact plate; 27. Rotating shaft; 3. Vibration reduction mechanism; 31. Fixed frame; 31 1. Embedded groove; 32. Air cushion; 33. Embedded plate; 34. Adjustment plate; 35. Contact pad; 4. Detection mechanism; 41. Drill pipe inner tube; 42. Sealing plate; 421. One-way air valve; 43. Drill pipe outer tube; 431. Heat conduction plate; 432. Heat insulation plate; 44. Inner groove; 45. Water tank; 451. Water pump; 452. One-way water valve; 46. Movable ring; 461. Detection component; 462. Moving groove. DETAILED DESCRIPTION

[0041] 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 implementation regulations 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 creative work are within the scope of protection of the present invention.

[0042] Embodiment 1, refer to Figure 1-Figure 9 As shown: The present invention provides a safety detection device for oil drilling rigs, comprising: a support mechanism 1, a main body mechanism 2, a vibration reduction mechanism 3 and a detection mechanism 4,

[0043] The supporting mechanism 1 is used to move the whole device, and then driven by four cylinder bodies 12, four supporting pads 13 are kept in contact with the ground to maintain the stability of the device;

[0044] The main body mechanism 2 is installed on the top of the support mechanism 1, with the rotating shaft 27 as the rotating point and the derrick hydraulic cylinder 15 as the driving force, which can keep the derrick body 22 and the components fixed thereto rotating and maintain a vertical state with the ground, so as to facilitate the operation of subsequent equipment;

[0045] The vibration reduction mechanism 3 can keep the contact plate 26 in contact with the vibration reduction mechanism 3 to complete the vibration reduction process in the folded state;

[0046] The detection mechanism 4 is fixedly installed at the bottom of the output end of the large drive motor 24. When the drill pipe is in use, it generates high temperature, which heats the water in the water tank 45 to form steam. The high-temperature and high-pressure gas pushes the movable ring 46 and the detection component 461 to move upward. During the movement, the detection component 461 generates ultrasound. When the ultrasound encounters the defects inside the drill pipe, it will be reflected and refracted. The reflected wave will return along the original path and be received by the detector. Then, by analyzing the transmission time, amplitude characteristics and other parameters of the reflected wave, the location, size and type of the defect can be determined, thereby completing the detection process;

[0047] The detection mechanism 4 includes a drill pipe inner tube 41 and a movable ring 46;

[0048] The outer wall of the drill pipe inner tube 41 is fixedly connected to two sealing plates 42, and a set of one-way air valves 421 are fixedly inserted inside the two sealing plates 42. The outer wall of the two sealing plates 42 is fixedly connected to the drill pipe outer tube 43.

[0049] A heat conducting plate 431 is fixedly embedded on one side of the inner surface wall of the drill pipe outer tube 43, and a heat insulating plate 432 is fixedly embedded on the other side of the inner surface wall of the drill pipe outer tube 43. Two inner grooves 44 are formed between the drill pipe inner tube 41, the two sealing plates 42 and the drill pipe outer tube 43. The drill pipe inner tube 41 and the drill pipe outer tube 43 are fixedly connected to a water tank 45. A group of water pumps 451 are fixedly connected to one side of the top of the water tank 45, and a one-way water valve 452 is fixedly connected to the other side of the top of the water tank 45. A group of detection components 461 are fixedly installed on the inner and outer walls of the movable ring 46. Two movable grooves 462 are opened on the top of the movable ring 46, and the outer walls of the two movable grooves 462 are slidably embedded in the inside of the two sealing plates 42.

[0050] In this embodiment, during the drilling operation, when the drill pipe penetrates into the soil layer and rotates at high speed, its outer wall heats up rapidly due to friction. At this time, the heat conducting plate 431, as a key component, efficiently transfers the heat to the inside, prompting one of the two inner grooves 44 to quickly form a high-temperature environment. At the same time, a group of high-efficiency water pumps 451 automatically starts to draw clean water from the water tank 45 and inject it into this high-temperature area. After the water comes into contact with the high temperature, it quickly vaporizes and produces high-pressure steam. This force then pushes the movable ring 46 to rise steadily. The movable ring 46 is cleverly embedded between the two sealing plates 42. Its built-in retractable sealing film ensures the tightness of the slot during the retraction process, effectively preventing the exchange of gas or liquid between the two inner grooves 44. As the movable ring 46 rises, the detection component 461 installed on its inner and outer walls begins to emit ultrasonic waves. When these ultrasonic waves propagate inside the drill pipe, Once encountering structural anomalies such as cracks and defects, reflection or scattering will occur to form unique signals. Through a sophisticated receiving and analysis system, these signals are converted into interpretable data, thereby accurately judging whether there is damage inside the drill pipe. When the movable ring 46 successfully reaches the top and triggers the controller, the one-way air valve 421 automatically opens to guide the high-temperature and high-pressure steam to another inner groove 44. This space is carefully isolated by the insulation board 432 to ensure the effective retention of heat and isolation from the external environment. Under the condition of a sudden drop in pressure, the high-temperature and high-pressure steam quickly condenses into water droplets, which are then guided back to the water tank 45 through the one-way water valve 452, completing a closed-loop water circulation process. This design not only achieves efficient use of energy, but also ensures the continuous and stable operation of the equipment during drilling operations, providing strong technical support for oil well exploitation.

[0051] Embodiment 2, according to Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, the main mechanism 2 includes two adjustment frames 21, a derrick body 22 is fixedly connected between one side of the outer wall of the two adjustment frames 21, two contact plates 26 are fixedly connected to one side of the outer wall of the derrick body 22, a cylinder B23 is fixedly installed on the top of the derrick body 22, a large-scale driving motor 24 is fixedly connected to the telescopic end of the cylinder B23, and the rotating end of the large-scale driving motor 24 is fixedly installed with the top of the drill pipe inner tube 41 by screws, a side connecting plate 25 is fixedly connected to one side of the outer wall of the large-scale driving motor 24, and one side of the outer wall of the side connecting plate 25 is slidably limited in the inside of the derrick body 22 by a group of sliders, and two rotating shafts 27 are movably inserted in the inside of the derrick body 22;

[0052] The support mechanism 1 includes a drilling rig winch 11 and two fixed shafts 14;

[0053] Four cylinder bodies 12 are fixedly inserted inside the drilling rig winch 11, and the telescopic ends of the four cylinder bodies 12 are fixedly connected with support pads 13;

[0054] The outer walls of the two fixed shafts 14 are movably sleeved with a derrick hydraulic cylinder 15, and the two fixed shafts 14 are fixedly installed with the inner wall of the drilling rig winch 11, the telescopic ends of the two derrick hydraulic cylinders 15 are fixedly connected with the drive shaft 16, and the outer walls of the two drive shafts 16 are rotatably connected to the inside of the adjustment frame 21, and the bottom of the inner wall of the drilling rig winch 11 is fixedly connected with two vertical plates 17, and the tops of the two vertical plates 17 are fixedly installed with vertical plates 17, and the tops of the two vertical plates 17 are respectively fixedly connected to the bottom of the rotating shaft 27;

[0055] The vibration reduction mechanism 3 includes two fixed frames 31, each of which is preset with a group of embedding grooves 311 inside, and the inner surface walls of the two groups of embedding grooves 311 are slidably embedded with embedding plates 33, and the outer surface walls of the two groups of embedding plates 33 are fixedly connected with adjustment plates 34, and the tops of the two adjustment plates 34 are fixedly installed with contact pads 35, and the tops of the two contact pads 35 are respectively in contact with one side of the outer wall of the contact plate 26, and the bottoms of the inner walls of the two fixed frames 31 are fixedly installed with air cushions 32, and the bottoms of the two adjustment plates 34 are respectively in contact with the tops of the air cushions 32.

[0056] In this embodiment, before the equipment is officially put into use, the first task is to ensure that the driving equipment support mechanism 1 is accurately positioned at the preset position, and then the cylinder bodies 12 are activated in turn. These cylinders work together to steadily lift the drilling rig winch 11 and its supporting fixed components to the predetermined operating height. Then, the two derrick hydraulic cylinders 15 are started. They are connected by a cleverly designed rotation connection - the derrick hydraulic cylinder 15 is connected to the outer wall of the fixed shaft 14, and the drive shaft 16 is embedded in the adjustment frame 21 - to achieve the free rotation of the derrick body 22 around the rotating shaft 27 as the center. This mechanism ensures that the derrick body 22 and all its fixed components maintain a precise vertical state with the ground, laying a solid and stable foundation for the entire drilling operation process, thereby successfully completing the initial preparation stage of equipment operation.

[0057] The working principle of the whole mechanism is as follows: before the equipment is fully started, the first and key step is to ensure that the driving equipment support mechanism 1 can be accurately positioned to the preset precise position. Then, a series of precise cylinder operations follow, and the cylinder bodies 12 are activated one by one. They work together to safely and firmly lift the drilling rig winch 11 and all its fixed components to a suitable operating height. Then, the two derrick hydraulic cylinders 15 are started under command. They are each flexibly connected to the rotation through the outer wall of the fixed shaft 14 and the drive shaft 16 installed inside the adjustment frame 21. This coordination mechanism ensures that the derrick body 22 can rotate smoothly around the rotation axis 27, thereby maintaining the derrick body 22 and all its auxiliary components in strict verticality with the ground. The detection mechanism 4 is in a straight state, which lays a solid and stable foundation for the subsequent drilling operation. After everything is ready, the detection mechanism 4 is carefully installed on the rotating end of the large drive motor 24 and fastened with screws to ensure its stability during operation. As the motor starts, the detection mechanism 4 rotates accordingly. At the same time, the cylinder B23 slowly descends at a constant speed until the drill bit at the bottom of the detection mechanism 4 accurately touches the soil layer, marking the official start of the oil well mining process. During the drilling operation, the drill rod rotates at a high speed in the soil layer, and its outer wall generates a lot of heat due to friction, causing the temperature to rise. At this time, the heat conducting plate 431 plays its key role, efficiently conducting the heat to the inside, prompting one of the two inner grooves 44 to quickly form a high-temperature environment. At the same time, A set of high-efficiency water pumps 451 start to operate, extracting clean water from the water tank 45 and accurately injecting it into this high-temperature area. The water quickly vaporizes at high temperature to form high-pressure steam, which in turn pushes the movable ring 46 to move upward. The movable ring 46 is embedded between the two sealing plates 42. The retractable sealing film inside ensures that the slot is tightly closed during the retraction process, effectively preventing the exchange of gas or liquid between the two inner grooves 44. As the movable ring 46 rises, the detection components 461 installed on its inner and outer walls start to work and emit ultrasonic signals. When these ultrasonic waves propagate inside the drill pipe, once they encounter abnormal conditions such as cracks and defects, they will produce obvious reflection or scattering signals. By receiving and analyzing these signals, the system can accurately determine whether the drill pipe is damaged. Whether there is any damage inside, and transmit relevant information to the external receiving equipment in real time so that timely countermeasures can be taken. When the movable ring 46 rises to the top and triggers the controller, the one-way air valve 421 automatically opens to guide the high-temperature and high-pressure steam to another inner tank 44. This space is carefully isolated by the insulation board 432 to ensure the effective retention of heat and isolation from the external environment. Under the condition of a sudden drop in pressure, the high-temperature and high-pressure steam quickly condenses into water droplets, and then these water droplets flow back to the water tank 45 through the one-way water valve 452 under the action of gravity, completing a closed-loop water circulation process. This design not only realizes the efficient use and recycling of energy, but also ensures the continuous and stable operation of the equipment during drilling operations. At the same time, by blocking the flow of water,The downward movement of the movable ring 46 can be maintained under the action of gravity, thereby achieving continuous monitoring and processing of the equipment.

[0058] A detection method for a petroleum drilling rig safety detection device comprises the following steps:

[0059] Step 1: Before using the equipment, first, drive the equipment support mechanism 1 to the specified position, start the cylinder body 12 respectively, so as to support the drilling rig winch 11 and the components fixed thereto, and then start the two derrick hydraulic cylinders 15, and because they are respectively connected to the outer wall of the fixed shaft 14 and the two drive shafts 16 are connected to the inside of the adjustment frame 21, the derrick body 22 can be kept rotating with the rotating shaft 27 as the base point, so as to keep the derrick body 22 and the components fixed thereto vertical to the ground, and make preliminary preparations for the operation of the equipment;

[0060] Step 2: Then, the detection mechanism 4 is installed on the rotating end of the large-scale driving motor 24 by screws, and the large-scale driving motor 24 is started to drive the detection mechanism 4 to rotate, and the cylinder B23 at the top keeps moving downward at a certain speed. After the bottom rotating head of the detection mechanism 4 contacts the soil layer, the exploitation of the oil well is completed;

[0061] Step 3, when the drill rod and the soil layer are rotating, the outer wall thereof generates high temperature in the rotating state, and under the action of the heat conducting plate 431, the heat can be transferred to the inside, thereby forming a high-temperature space in one of the two inner grooves 44, and at the same time, a group of water pumps 451 can extract the moisture inside the water tank 45, and after contacting with the high-temperature space, high-pressure gas is formed, and then under the action of the high-pressure gas, the movable ring 46 can be pushed to move upward, and when the movable ring 46 is slidably embedded in the two sealing plates 42, there is a retractable sealing film inside, which effectively seals the notch of the telescopic connection to avoid the connection between the two inner grooves 44;

[0062] Step 4. During the upward movement of the movable ring 46, ultrasonic waves are generated by a group of detection components 461 respectively arranged on the inner and outer walls. The ultrasonic waves are reflected or scattered when they encounter cracks or defects when propagating inside the drill pipe. By receiving and analyzing these signals, it is determined whether there is a crack inside the drill pipe. Then, when the movable ring 46 reaches the top, it touches the controller and starts the one-way air valve 421, which can transfer the high-temperature and high-pressure gas to the other space of the two inner grooves 44. Because the other space is isolated from the heat outside by the insulation board 432, the high-temperature and high-pressure steam is released into a lower pressure environment. When the pressure is reduced, the steam will quickly condense to form water droplets and be transferred to the inside of the one-way water valve 452. Finally, the water is transferred back to the inside of the water tank 45 through the one-way water valve 452 to form an effective cycle.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety detection device for oil drilling rigs, comprising: a support mechanism (1), a main body mechanism (2), a vibration reduction mechanism (3) and a detection mechanism (4), characterized in that: The support mechanism (1) comprises a drilling rig winch (11) and two fixed shafts (14); Four cylinder bodies (12) are fixedly inserted inside the drilling rig winch (11), and the telescopic ends of the four cylinder bodies (12) are fixedly connected to support pads (13). The outer walls of the two fixed shafts (14) are movably sleeved with derrick hydraulic cylinders (15), and the two fixed shafts (14) are fixedly installed on the inner wall of the drilling rig winch (11); the support mechanism (1) is used to move the entire device, and then, driven by the four cylinder bodies (12), the four support pads (13) are kept in contact with the ground to maintain the stability of the device; The main body mechanism (2) comprises two adjustment frames (21), a derrick body (22) is fixedly connected between one side of the outer walls of the two adjustment frames (21), two contact plates (26) are fixedly connected to one side of the outer wall of the derrick body (22), a large-scale driving motor (24) is fixedly connected to the telescopic end of the cylinder B (23), and two rotating shafts (27) are movably inserted inside the derrick body (22); The main body mechanism (2) is mounted on the top of the support mechanism (1), with the rotating shaft (27) as the rotating point and the derrick hydraulic cylinder (15) as the driving force, which can keep the derrick body (22) and the components fixed thereto rotating and maintain a vertical state with the ground, so as to facilitate the operation of subsequent equipment; The vibration reduction mechanism (3) is capable of maintaining the contact plate (26) in contact with the vibration reduction mechanism (3) to complete vibration reduction processing in a folded state; The detection mechanism (4) comprises a drill rod inner tube (41) and a movable ring (46); The outer wall of the drill pipe inner tube (41) is fixedly connected to two sealing plates (42), the outer walls of the two sealing plates (42) are fixedly connected to the drill pipe outer tube (43), the drill pipe inner tube (41) and the drill pipe outer tube (43) are fixedly connected to a water tank (45), the inner wall and the outer wall of the movable ring (46) are fixedly installed with a group of detection components (461), and the movable ring (46) is slidably embedded between the two sealing plates (42), and the movable ring (46) is embedded and moved up and down between the drill pipe inner tube (41) and the drill pipe outer tube (43); the detection mechanism ( 4) It is fixedly installed at the bottom of the output end of the large drive motor (24). When the drill pipe is in use, it generates high temperature, which heats the water in the water tank (45) to form steam. The high-temperature and high-pressure gas pushes the movable ring (46) and the detection component (461) to move upward. During the movement, the detection component (461) generates ultrasound. When the ultrasound encounters a defect inside the drill pipe, it will be reflected and refracted. The reflected wave will return along the original path and be received by the detector. Then, by analyzing the transmission time and amplitude characteristic parameters of the reflected wave, the location, size and type of the defect can be determined, thereby completing the detection process.

2. The oil drilling rig safety detection device according to claim 1 is characterized in that: A set of one-way air valves (421) are fixedly inserted inside the two sealing plates (42); A heat conducting plate (431) is fixedly embedded on one side of the inner surface wall of the drill rod outer tube (43), and a heat insulating plate (432) is fixedly embedded on the other side of the inner surface wall of the drill rod outer tube (43); two inner grooves (44) are formed between the drill rod inner tube (41), the two sealing plates (42) and the drill rod outer tube (43).

3. A safety detection device for oil drilling rigs according to claim 2, characterized in that: One side of the top of the water tank (45) is fixedly connected to a group of water pumps (451), and the other side of the top of the water tank (45) is fixedly connected to a one-way water valve (452).

4. A safety detection device for oil drilling rigs according to claim 3, characterized in that: Two movable grooves (462) are formed on the top of the movable ring (46), and the outer walls of the two movable grooves (462) are slidably embedded in the interior of the two sealing plates (42).

5. A safety detection device for oil drilling rigs according to claim 4, characterized in that: A cylinder B (23) is fixedly mounted on the top of the derrick body (22), and a rotating end of a large drive motor (24) is fixedly mounted on the top of the drill pipe inner tube (41) by means of screws.

6. A safety detection device for oil drilling rigs according to claim 5, characterized in that: A side connecting plate (25) is fixedly connected to one side of the outer wall of the large-scale driving motor (24), and one side of the outer wall of the side connecting plate (25) is slidably limited inside the derrick body (22) via a group of sliding blocks.

7. The oil drilling rig safety detection device according to claim 6, characterized in that: The telescopic ends of the two derrick hydraulic cylinders (15) are both fixedly connected to a driving shaft (16), and the outer walls of the two driving shafts (16) are respectively rotatably connected to the inside of the adjustment frame (21).

8. The oil drilling rig safety detection device according to claim 7, characterized in that: Two vertical plates (17) are fixedly connected to the bottom of the inner wall of the drilling rig winch (11), and the tops of the two vertical plates (17) are respectively fixedly connected to the bottom of the rotating shaft (27).

9. The oil drilling rig safety detection device according to claim 8, characterized in that: The vibration reduction mechanism (3) comprises two fixed frames (31), each of the two fixed frames (31) being preset with a group of embedding grooves (311), the inner surface walls of the two groups of embedding grooves (311) being slidably embedded with embedding plates (33), the outer surface walls of the two groups of embedding plates (33) being fixedly connected with adjustment plates (34), the tops of the two adjustment plates (34) being fixedly mounted with contact pads (35), and the tops of the two contact pads (35) being respectively in contact with one side of the outer wall of the contact plate (26), and the bottoms of the inner walls of the two fixed frames (31) being fixedly mounted with air cushions (32), and the bottoms of the two adjustment plates (34) being respectively in contact with the tops of the air cushions (32).

10. A monitoring method for a safety detection device for an oil drilling rig, characterized in that: The oil drilling rig safety detection device according to claim 9 is used, comprising the following steps: S1. First, before the equipment is used, the equipment support mechanism (1) is driven to reach a designated position, and the cylinder body (12) is started to support the drilling rig winch (11) and the components fixed thereto. Then, the two derrick hydraulic cylinders (15) are started, and because they are respectively rotatably connected between the outer walls of the fixed shaft (14) and the two drive shafts (16) are rotatably connected inside the adjustment frame (21), the derrick body (22) can be kept rotating with the rotation axis (27) as the base point, thereby keeping the derrick body (22) and the components fixed thereto in a vertical state with respect to the ground, and making preliminary preparations for the operation of the equipment; S2, then the detection mechanism (4) is mounted on the rotating end of the large-scale driving motor (24) by means of screws, the large-scale driving motor (24) is started to drive the detection mechanism (4) to rotate, and the cylinder B (23) at the top moves downward at a certain speed, and after the bottom rotating head of the detection mechanism (4) contacts the soil layer, the exploitation of the oil well is completed; S3. When the drill rod and the soil layer are rotating, the outer wall thereof generates high temperature in the rotating state. Under the action of the heat conducting plate (431), the heat can be transferred to the inside, thereby forming a high-temperature space in one of the two inner grooves (44). At the same time, a group of water pumps (451) can extract the moisture in the water tank (45). When it comes into contact with the high-temperature space, high-pressure gas is formed. Subsequently, under the action of the high-pressure gas, the movable ring (46) can be pushed to move upward. When the movable ring (46) is slidably embedded in the two sealing plates (42), a retractable sealing film is provided inside the movable ring to effectively seal the notch of the retractable connection, thereby preventing the two inner grooves (44) from being connected. S4. During the upward movement of the movable ring (46), ultrasonic waves generated by a group of detection components (461) respectively arranged on the inner and outer walls utilize the characteristics of ultrasonic waves being reflected or scattered when encountering defects when propagating inside the drill pipe. By receiving and analyzing these signals, it is determined whether there is a crack inside the drill pipe. Then, when the movable ring (46) reaches the top, it touches the controller and activates the one-way air valve (421), which can transfer high-temperature and high-pressure gas to the other space of the two inner grooves (44). Because the other space is isolated from heat by the insulation board (432), the high-temperature and high-pressure steam is released into a lower pressure environment. When the pressure decreases, the steam will quickly condense to form water droplets, and be transferred to the inside of the one-way water valve (452). Finally, the water is transferred back to the inside of the water tank (45) through the one-way water valve (452) to form an effective cycle.

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