A top drive large-diameter rescue drilling gas circulation system

Abstract

The utility model relates to the technical field of well drilling equipment provides a kind of large-diameter rescue well drilling gas circulation system of top drive, including top drive device, top drive device is connected with gas circulation main mechanism transmission, the input end of gas circulation main mechanism is connected with the output of pressure control and adjustment module, the output end of gas circulation main mechanism is connected with the input of filter purification subassembly, the input end of pressure control and adjustment module is connected with external gas source;It also includes and top drive device, gas circulation main mechanism, pressure control and adjustment module and filter purification subassembly electric connection's intelligent detection unit.The utility model is equipped with top drive device, gas circulation main mechanism, pressure control and adjustment module, filter purification subassembly and intelligent detection unit, power transmission efficiency is high, pressure control is stable, filter purification effect is good and has intelligent monitoring function.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment technology, specifically a top-driven large-diameter rescue drilling gas circulation system. Background Technology

[0002] In emergency rescue scenarios such as mine rescue and tunnel collapse rescue, large-diameter rescue drilling equipment is a key piece of equipment for opening up life channels and transporting rescue supplies. As an important component of large-diameter rescue drilling equipment, the gas circulation system's main function is to realize gas circulation during the drilling process, expel dust and harmful gases generated during drilling, and at the same time supply fresh air or protective gas to the drilling area, ensuring the smooth progress of drilling operations and the safety of rescue personnel.

[0003] Existing large-diameter rescue drilling gas circulation systems mostly adopt side-drive or bottom-drive methods, which have problems such as low power transmission efficiency and poor adaptability to the wellhead. In large-diameter drilling operations, the gas circulation flow rate requirement is large, and the pressure control and regulation capabilities of existing systems are insufficient, which easily leads to gas pressure fluctuations and affects the stability of drilling operations. At the same time, dust, oil and other impurities generated during drilling can easily enter the gas circulation system. Existing filtration and purification devices have poor filtration effects, which can easily cause blockage of system components, shorten equipment life and increase maintenance costs. In addition, existing systems lack effective intelligent monitoring and early warning mechanisms, and cannot grasp the working status of each component in real time. When a fault occurs, it cannot be detected and dealt with in a timely manner, which may lead to delays in rescue operations and safety hazards. Utility Model Content

[0004] This invention proposes a top-driven drilling gas circulation system with high power transmission efficiency, stable pressure control, good filtration and purification effect, and intelligent monitoring function.

[0005] A top-driven large-diameter rescue drilling gas circulation system includes a top drive device, which is connected to the main gas circulation mechanism. The inlet of the main gas circulation mechanism is connected to the output of the pressure control module, the outlet of the main gas circulation mechanism is connected to the input of the filter and purification component, and the input of the pressure control module is connected to an external gas source. It also includes an intelligent detection unit that is electrically connected to the top drive device, the gas circulation main mechanism, the pressure control module, and the filtration and purification components.

[0006] By adopting the above structure, a top drive device is set up to provide efficient and precise top drive force for the main gas circulation mechanism, solving the problem of low power transmission efficiency in traditional drive methods; the main gas circulation mechanism is set up to be responsible for gas delivery, circulation, and return; a pressure control and regulation module is set up to stabilize the pressure of the gas circulation system, avoiding pressure fluctuations from affecting drilling operations, and precisely adjusting the gas pressure according to operational needs; a filtration and purification component is set up to remove dust, oil, and harmful gases during the gas circulation process, ensuring gas quality and preventing system component blockage and damage; and an intelligent detection unit is set up to monitor the working parameters of each part of the structure, realizing automated control and fault early warning, improving the intelligence level and operational safety of the gas circulation system.

[0007] To achieve real-time monitoring, automated control, and fault early warning of the working parameters of each part, the intelligent detection unit includes a controller and a detection device. The detection device is used to detect the flow rate and pressure of the gas purified by the filtration and purification component. The controller is electrically connected to the top drive device, the gas circulation main body mechanism, the pressure control and adjustment module, and the filtration and purification component. The controller is equipped with a display screen and an alarm device. The controller adopts a PLC controller, and the alarm device is an audible and visual alarm.

[0008] Preferably, the top drive device includes a drive motor, the output end of the drive motor is driven by a reduction gearbox, the output end of the reduction gearbox is driven by a drive shaft, one end of the drive shaft is connected to the gas circulation main body mechanism through a connecting flange, a torque sensor is provided on the drive shaft, and both the drive motor and the torque sensor are electrically connected to the intelligent detection unit.

[0009] To better achieve gas recycling and reduce the consumption of external gas sources, the main gas recycling mechanism includes a circulation pipe. One end of the circulation pipe is connected to the pressure control module. An injector for accelerating gas flow is provided on the circulation pipe. A return pump is provided in the return section of the circulation pipe. The injector and the return pump are connected to the filter and purification assembly. A flow sensor is provided on the circulation pipe. Both the return pump and the flow sensor are electrically connected to the intelligent detection unit.

[0010] Preferably, the inner wall of the circulation pipe is provided with a corrosion-resistant coating, which is a polytetrafluoroethylene coating.

[0011] To better achieve real-time monitoring and precise adjustment of system pressure, the pressure control and adjustment module includes a pressure regulating valve. One end of the pressure regulating valve is connected to an external gas source, and the other end is connected to a pressure stabilizing tank. The pressure stabilizing tank is connected to the air inlet of the gas circulation main body mechanism. A pressure sensor is installed on the pressure stabilizing tank. Both the pressure regulating valve and the pressure sensor are electrically connected to the intelligent detection unit.

[0012] To prevent impurities from clogging system components and extend equipment lifespan, the filtration and purification assembly includes a primary filter and a secondary filter. One end of the primary filter is connected to the outlet of the gas circulation main body, and the other end of the primary filter is connected to one end of the secondary filter. A gas detector is installed at the other end of the secondary filter, and the gas detector is electrically connected to the intelligent detection unit. A metal filter screen is installed inside the primary filter, and an activated carbon adsorption layer is installed inside the secondary filter.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are: The large-diameter rescue drilling gas circulation system provided by this utility model has a top drive device, which provides efficient and precise top drive force to the main gas circulation mechanism, solving the problem of low power transmission efficiency in traditional drive methods. The main gas circulation mechanism is used to realize the transportation, circulation and return of gas. The pressure control and adjustment module is used to stabilize the pressure of the gas circulation system, avoid pressure fluctuations from affecting drilling operations, and precisely adjust the gas pressure according to operational needs. By setting up a filter and purification component, dust, oil and harmful gases are removed during the gas circulation process, ensuring gas quality and preventing system components from becoming clogged and damaged.

[0014] This invention adopts a top-drive method, which achieves precise power transmission through a drive motor, a reduction gearbox, and a transmission spindle. Compared with traditional side-drive or bottom-drive methods, it has higher power transmission efficiency and is more adaptable to large-diameter wellheads, meeting the gas circulation requirements of wells with different diameters.

[0015] This invention, by setting up an intelligent detection unit, enables real-time monitoring, automated control, and fault early warning of the working parameters of each part. Staff can intuitively grasp the system's operating status through the display screen. When a fault occurs, the audible and visual alarm will sound in time, facilitating staff to quickly troubleshoot and handle the problem, reducing downtime, and improving the efficiency and safety of rescue operations. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model.

[0017] The components are as follows: 1-Top drive unit; 11-Drive motor; 12-Gearbox; 2-Gas circulation main body mechanism; 21-Return pump; 22-Ejector; 3-Pressure control and adjustment module; 31-Pressure gauge; 32-Pressure regulating valve; 33-Pressure stabilizing tank; 4-Filter and purification assembly; 41-Primary filter; 42-Secondary filter; 5-Intelligent detection unit; 51-Alarm device; 52-Display screen; 6-Detection equipment. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] The orientations mentioned in this specification are based on the orientation of this utility model during normal operation, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0020] like Figure 1-2 As shown, a top-driven large-diameter rescue drilling gas circulation system includes a top drive device 1, which is connected to a gas circulation main body mechanism 2. The gas circulation main body mechanism 2 has an inlet end connected to the output end of a pressure control and adjustment module 3, an outlet end connected to the input end of a filter and purification component 4, and an input end of a pressure control and adjustment module 3 connected to an external gas source. The system also includes an intelligent detection unit 5 that is electrically connected to the top drive device 1, the gas circulation main body mechanism 2, the pressure control and adjustment module 3, and the filter and purification component 4.

[0021] The intelligent detection unit 5 includes a controller and a detection device 6. The controller is electrically connected to the top drive device 1, the gas circulation main mechanism 2, the pressure control and regulation module 3, and the filter and purification component 4. The controller is equipped with a display screen 52 and an alarm device 51. The detection device 6 is used to detect the flow rate and pressure of the gas purified by the filter and purification component 4. The controller adopts a PLC controller to receive parameter signals transmitted by each detection element and send control commands to the corresponding actuators according to the preset control logic to realize the automated operation of the system. The alarm device 51 is an audible and visual alarm, and the display screen 52 is a touch screen. The display screen 52 displays the system's operating parameters in real time. The staff can monitor the system's operating status through the display screen 52 and can also manually input parameters to adjust the system's operating mode. When the system parameters exceed the preset range, the controller controls the audible and visual alarm to issue an audible and visual alarm, and at the same time displays the fault information on the display screen 52 to remind the staff to troubleshoot the fault in time and avoid accidents.

[0022] The top drive unit 1 includes a drive motor 11, which is a variable frequency motor that can adjust its speed according to operational needs to meet power requirements under different working conditions. The output end of the drive motor 11 is connected to a reduction gearbox 12, and the output end of the reduction gearbox 12 is connected to a drive shaft. One end of the drive shaft is connected to the gas circulation main body mechanism 2 through a connecting flange. A torque sensor is installed on the drive shaft. Both the drive motor 11 and the torque sensor are electrically connected to the intelligent detection unit 5. The torque sensor can monitor the torque change of the drive shaft in real time and transmit the data to the intelligent detection unit 5. When the torque of the drive shaft exceeds the preset range, the intelligent detection unit 5 can control the drive motor 11 to adjust its speed in a timely manner to avoid overload damage to the equipment. The top drive unit 1 is used to provide efficient and precise top drive force for the gas circulation main body mechanism 2, solving the problem of low power transmission efficiency in traditional drive methods.

[0023] The gas circulation main body 2 includes a circulation pipe. The inner diameter of the circulation pipe is designed according to the size of the wellhead of a large-diameter drilling well. One end of the circulation pipe is connected to the pressure control and adjustment module 3. An ejector 22 is provided on the circulation pipe to accelerate the gas flow. After the gas enters the ejector 22, the gas flow rate is accelerated, the gas delivery efficiency is improved, and the convection effect between the gas and the drilling area is enhanced, so that dust and harmful gases can be better discharged. The gas circulation main body 2 is responsible for the gas delivery, circulation and return.

[0024] The return section of the circulation pipeline is equipped with a return pump 21. The ejector 22 and the return pump 21 are connected to the filter and purification assembly 4. The return pump 21 is a centrifugal pump that returns part of the filtered and purified gas to the inlet end, realizing gas recycling and reducing external gas source consumption. The circulation pipeline is equipped with a flow sensor. Both the return pump 21 and the flow sensor are electrically connected to the intelligent detection unit 5. The flow sensor monitors the gas flow in the circulation pipeline in real time and feeds back the detected data to the intelligent detection unit 5, providing a basis for the intelligent detection unit 5 to control the centrifugal pump to adjust the flow.

[0025] The inner wall of the circulation pipeline is equipped with a corrosion-resistant coating, which is a polytetrafluoroethylene coating. This coating can effectively resist the corrosion of harmful gases and oil during drilling, thereby extending the service life of the circulation pipeline.

[0026] The pressure control module 3 includes a pressure regulating valve 32. One end of the pressure regulating valve 32 is connected to an external gas source via a pressure gauge 31, and the other end is connected to a pressure stabilizing tank 33. The pressure stabilizing tank 33 is connected to the air inlet of the gas circulation main body mechanism 2. A pressure sensor is installed on the pressure stabilizing tank 33. Both the pressure regulating valve 32 and the pressure sensor are electrically connected to the intelligent detection unit 5. The pressure sensor is used to monitor the gas pressure in the pressure stabilizing tank 33 in real time. When the pressure exceeds the preset range, the pressure sensor will transmit a signal to the intelligent detection unit 5. The intelligent detection unit 5 controls the pressure regulating valve 32 to adjust the opening to restore the pressure to the normal range and ensure the stability of the system pressure. The pressure control module 3 is used to stabilize the pressure of the gas circulation system, avoid pressure fluctuations from affecting drilling operations, and accurately adjust the gas pressure according to operational requirements.

[0027] External air enters the pressure regulating valve 32 of the pressure control and regulation module 3 into the pressure stabilizing tank 33. The pressure sensor monitors the pressure inside the pressure stabilizing tank 33. The controller of the intelligent detection unit 5 controls the pressure regulating valve 32 to adjust the opening according to the data from the pressure sensor, so that the pressure stabilizing tank 33 outputs gas with stable pressure. The gas with stable pressure enters the circulation pipeline of the gas circulation main body mechanism 2. After being accelerated by the ejector 22, it is delivered to the wellhead to provide fresh air or protective gas for the drilling area. At the same time, it carries the dust and harmful gases generated during drilling into the circulation pipeline. The return pump 21 works under the control of the controller to push the gas to flow in the circulation pipeline. The gas carries the dust and harmful gases into the filter and purification component 4.

[0028] The filtration and purification assembly 4 is used to remove dust, oil, and harmful gases during the gas circulation process, ensuring gas quality and preventing system components from becoming clogged or damaged. The filtration and purification assembly 4 includes a primary filter 41 and a secondary filter 42. The primary filter 41 contains a metal filter screen for filtering dust and impurities in the gas, and the secondary filter 42 contains an activated carbon adsorption layer for adsorbing oil and harmful gases in the gas. Both the primary filter 41 and the secondary filter 42 adopt a detachable structure design, which facilitates the replacement and maintenance of the filter screen and the activated carbon adsorption layer. One end of the primary filter 41 is connected to the gas outlet of the main gas circulation mechanism 2, and the other end of the primary filter 41 is connected to one end of the secondary filter 42. The other end of the secondary filter 42 is equipped with a gas detector, which is electrically connected to the intelligent detection unit 5. The gas detector can detect the concentration of harmful gases in the purified gas in real time and transmit the detection data to the intelligent detection unit 5. When the concentration of harmful gases exceeds the safety standard, the intelligent detection unit 5 controls the alarm device 51 to issue an alarm, reminding the staff to deal with it in time.

[0029] The gas first passes through the metal filter of the primary filter 41 to remove large particles of dust and impurities; then it passes through the activated carbon adsorption layer of the secondary filter 42 to adsorb oil and harmful gases; the gas detector detects the quality of the purified gas. If the concentration of harmful gases meets the safety standards, part of the gas can be returned to the inlet of the circulation pipeline by the return pump 21 for recycling, and part can be directly discharged; if the concentration of harmful gases exceeds the standard, the gas detector transmits a signal to the controller, which controls the alarm device 51 to sound an alarm and adjusts the speed of the return pump 21 to increase the number of gas purification cycles until the gas quality meets the standard. During the entire operation, the drive motor 11 of the top drive device 1 operates under the control of the controller, driving the transmission main shaft to rotate through the reduction gearbox 12 to provide power to the gas circulation main mechanism 2; the torque sensor monitors the torque of the transmission main shaft. If the torque is overloaded, the controller controls the drive motor 11 to reduce the speed to avoid equipment damage; the flow sensor monitors the gas flow in the circulation pipeline, and the controller adjusts the speed of the return pump 21 according to the flow data to ensure stable flow.

[0030] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A top-driven, large-diameter rescue drilling gas circulation system, characterized in that, Includes a top drive device (1), which is connected to the gas circulation main body mechanism (2) in a transmission connection. The air inlet of the gas circulation main body mechanism (2) is connected to the output of the pressure control module (3), the air outlet of the gas circulation main body mechanism (2) is connected to the input of the filter purification component (4), and the input of the pressure control module (3) is connected to an external air source. It also includes an intelligent detection unit (5) that is electrically connected to the top drive device (1), the gas circulation main body mechanism (2), the pressure control module (3) and the filter purification component (4).

2. The top-driven large-diameter rescue drilling gas circulation system according to claim 1, characterized in that, The intelligent detection unit (5) includes a controller and a detection device (6). The detection device (6) is used to detect the flow rate and pressure of the gas after purification by the filter purification component (4). The controller is electrically connected to the top drive device (1), the gas circulation main body mechanism (2), the pressure control module (3) and the filter purification component (4). The controller is equipped with a display screen (52) and an alarm device (51). The controller adopts a PLC controller, and the alarm device (51) is an audible and visual alarm.

3. The top-driven large-diameter rescue drilling gas circulation system according to claim 1, characterized in that, The top drive device (1) includes a drive motor (11), the output end of the drive motor (11) is connected to a reduction gearbox (12), the output end of the reduction gearbox (12) is connected to a drive shaft, one end of the drive shaft is connected to the gas circulation main body mechanism (2) through a connecting flange, a torque sensor is provided on the drive shaft, and both the drive motor (11) and the torque sensor are electrically connected to the intelligent detection unit (5).

4. A top-driven large-diameter rescue drilling gas circulation system according to claim 1, characterized in that, The gas circulation main body (2) includes a circulation pipe, one end of which is connected to the pressure control module (3). The circulation pipe is provided with an injector (22) for accelerating gas flow. The return section of the circulation pipe is provided with a return pump (21). The injector (22) and the return pump (21) are connected to the filter purification component (4). The circulation pipe is provided with a flow sensor. The return pump (21) and the flow sensor are both electrically connected to the intelligent detection unit (5).

5. A top-driven large-diameter rescue drilling gas circulation system according to claim 4, characterized in that, The inner wall of the circulation pipe is provided with a corrosion-resistant coating, which is a polytetrafluoroethylene coating.

6. A top-driven large-diameter rescue drilling gas circulation system according to claim 1, characterized in that, The pressure control module (3) includes a pressure regulating valve (32). One end of the pressure regulating valve (32) is connected to an external gas source, and the other end is connected to a pressure stabilizing tank (33). The pressure stabilizing tank (33) is connected to the air inlet of the gas circulation main body mechanism (2). The pressure stabilizing tank (33) is equipped with a pressure sensor. The pressure regulating valve (32) and the pressure sensor are both electrically connected to the intelligent detection unit (5).

7. A top-driven large-diameter rescue drilling gas circulation system according to claim 1, characterized in that, The filtration and purification component (4) includes a primary filter (41) and a secondary filter (42). One end of the primary filter (41) is connected to the outlet of the gas circulation main body (2), and the other end of the primary filter (41) is connected to one end of the secondary filter (42). The other end of the secondary filter (42) is equipped with a gas detector, which is electrically connected to the intelligent detection unit (5). The primary filter (41) is equipped with a metal filter screen, and the secondary filter (42) is equipped with an activated carbon adsorption layer.

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