Drilling monitoring drill bit and installation method thereof

Abstract

The drilling monitoring drill bit comprises a drill bit body, the drill bit body comprises a drill bit and a hollow long rod, one end of the hollow long rod is connected with the drill bit, the other end of the hollow long rod is provided with external threads connected to a drill rod, and an inner cavity of the hollow long rod is communicated with a water flowing channel in the drill bit; the monitoring assembly is arranged in the drill bit body and comprises a monitoring pipe body used for monitoring and a pair of end covers connected with the two ends of the monitoring pipe body in a sealed mode. Wherein a plurality of groups of male screw threads forming an annular structure are arranged on the outer side wall of the monitoring pipe body, a plurality of groups of female screw threads matched with the plurality of groups of male screw threads are arranged on the inner wall of the hollow long rod, the outer diameter of the annular structure formed by the male screw threads is reduced in a gradient mode in the extending direction from the hollow long rod to the drill bit, and the thread lengths of the male screw threads are the same. The underground rock stratum characteristic can be accurately controlled, rich and accurate data can be provided, the monitoring efficiency is improved, the device can be rapidly placed in place, installation is convenient, and good adaptability is shown.

Description

Technical Field

[0001] The present invention relates to the field of mining rock geological monitoring instruments, and more specifically, to a drilling monitoring drill bit and an installation method thereof. Background Art

[0002] In the field of modern mining engineering, the geological foundation conditions of rock formations are like the cornerstone, firmly controlling the safety of mining operations. Mining operations involve large-scale underground rock excavation and resource extraction. The complex and changeable rock formation conditions hide a series of high-risk hidden dangers such as landslides, water seepage, and gas leakage. From project preparation to the entire mining process, the precise control of the geological foundation conditions of the rock formations and the accurate acquisition of the relevant lithology, physical and mechanical parameters of the underground rock formations are the key to the safety of mining operations.

[0003] Traditional measurement methods, such as ground geological surveys, aerial geological mapping, and drilling core measurement, are not only lengthy and inefficient, but also have unsatisfactory measurement accuracy, which is far from meeting the stringent requirements of efficient and accurate mining. The monitoring equipment used in traditional measurement methods is large and bulky. In the narrow tunnels of coal mines, firstly, if you are not careful, the collision between the large monitoring equipment and the tunnel wall may cause damage to the internal precision parts; secondly, installing the large monitoring equipment to the designated drilling position requires the help of large auxiliary lifting equipment, which greatly increases the difficulty of construction. Finally, the existing monitoring equipment takes a long time to debug, which seriously affects the operation efficiency.

[0004] Another challenge facing existing monitoring equipment is its high cost. Monitoring equipment that integrates high precision and complex functions is very expensive. Many small mining companies are often unable to update their equipment due to financial constraints, which affects the improvement of advanced monitoring technology. At the same time, the operation and maintenance costs of monitoring equipment that is large in size and complex in function are also a bottomless pit. Once the equipment is in operation, consumable parts need to be replaced frequently, maintenance costs are high, and the cost of regular calibration and maintenance is also substantial, which weakens the motivation of companies to upgrade their technical equipment.

[0005] The poor adaptability and adjustability of large-scale monitoring equipment is also a major flaw. Most of the existing monitoring equipment is designed and manufactured based on fixed specifications and preset scenarios. Faced with the complex and changeable geological environment and mining layout underground, it lacks adaptability and adjustability. For example, in some irregular drilling sites or areas where the monitoring position needs to be changed frequently, the existing detection equipment is difficult to put into place quickly, resulting in the inability to obtain key detection data in a timely manner, delaying the optimization and adjustment of subsequent mining plans, and seriously limiting the improvement of the overall efficiency of the mining industry.

[0006] In summary, it is urgent to update existing monitoring equipment. Summary of the invention

[0007] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0008] Another object of the present invention is to provide a drilling monitoring drill bit, which can not only accurately control the characteristics of underground rock formations to provide rich and accurate data and improve monitoring efficiency, but also can be quickly put into place, is easy to install, and exhibits good adaptability.

[0009] In order to achieve these purposes and other advantages according to the present invention, there is provided a drilling monitoring drill bit, comprising: The drill body comprises a drill bit and a hollow long rod, one end of the hollow long rod is connected to the drill bit and the other end is provided with an external thread connected to the drill rod, and the inner cavity of the hollow long rod is connected to the water flow channel in the drill bit; A monitoring assembly is disposed in the drill bit body, and includes a monitoring tube body for monitoring and a pair of end caps sealedly connected to both ends of the monitoring tube body; Among them, the outer wall of the monitoring tube body is provided with multiple groups of male threads forming an annular structure, and the inner wall of the hollow long rod is provided with multiple groups of female threads matching with the multiple groups of male threads. Along the extension direction of the hollow long rod toward the drill bit, the outer diameter gradient of the annular structure formed by the male threads decreases, and the thread length of the male threads is the same.

[0010] Preferably, a communication interface is provided at one end of the monitoring tube body, and the communication interface is arranged close to the drill bit. Independent power supply compartment, monitoring compartment and control compartment are provided in the monitoring tube body to respectively install lithium batteries, sensor groups and control boards. The communication interface, the lithium battery and the sensor group are all electrically connected to the control board.

[0011] Preferably, the sensor group includes a triaxial vibration acceleration sensor, a temperature sensor and an angular velocity sensor.

[0012] Preferably, the control panel is provided with an outwardly extending aviation plug, and the monitoring compartment is provided with an aviation socket corresponding to the aviation plug.

[0013] Preferably, the monitoring tube body includes a monitoring inner tube and a monitoring outer tube which are sleeved, and either end of the monitoring inner tube is telescoped to the corresponding end of the monitoring outer tube, and the communication interface is provided on one end of the monitoring inner tube, and the other end of the monitoring inner tube is closed, and both ends of the monitoring inner tube are provided with external threads that are compatible with the internal threads of the end cover, the connection between the monitoring outer tube and the end cover is set with equal diameters, and an O-ring is provided between the end of the monitoring outer tube and the end cover.

[0014] Preferably, the monitoring inner tube is provided with a through hole for the temperature sensor sensing section to pass through, the monitoring outer tube is provided with an inner groove facing the through hole, and the monitoring outer tube is provided with a pair of slots connected to the inner groove to form a water flow passage.

[0015] Preferably, a connecting portion is provided on the end cover disposed at the closed end of the monitoring inner tube, and the connecting portion comprises: A connecting sleeve, comprising a connecting inner tube sleeved on the end cover and a connecting outer tube connected to the connecting inner tube via reinforcing ribs; An operating ring, which is arranged away from the connecting sleeve, and a plurality of supporting rods are arranged between the operating ring and the connecting inner tube; Among them, the connecting outer tube is provided with a male thread that cooperates with the female thread on the inner wall of the hollow long rod, and the outer diameter of the annular structure formed by a group of male threads on the connecting outer tube is larger than the outer diameter of the annular structure formed by an adjacent group of male threads, and the male thread on the connecting outer tube has the same thread length as the male thread on the monitoring outer tube.

[0016] Preferably, the monitoring outer tube and the monitoring inner tube are both non-magnetic pressure-bearing steel tubes.

[0017] Preferably, the drill bit body uses PDC polycrystalline diamond composite sheets to cut and break rocks.

[0018] The present invention further claims protection for a method for installing the drilling monitoring drill bit, wherein the drill bit body is connected to the monitoring assembly via a threaded connection.

[0019] The present invention has at least the following beneficial effects: First, the drilling monitoring drill bit provided by the present invention comprises a drill bit body and a monitoring component, and the monitoring component is integrally arranged in the drill bit body, which overcomes the defects of traditional monitoring equipment being large in size and complex in installation, so that the assembly process of the designated drilling position no longer relies on large-scale auxiliary lifting equipment, greatly improving the portability and installation convenience of the drilling monitoring equipment. The monitoring component is arranged in the drill bit body through a threaded structure, which enables the drilling monitoring equipment to be quickly put in place to carry out monitoring and timely feedback of address information, so that the drilling operation can be adjusted in real time according to the data, reducing the engineering waste caused by information lag, and effectively ensuring the high efficiency of mining operations. The present invention integrates the drill bit and the drilling monitoring equipment into one. The built-in monitoring means can monitor the wear and temperature status of the drill bit in real time. Once the drill bit is found to be excessively worn or the temperature is too high, it can quickly issue an early warning, and the operator can replace or adjust the drill bit in time to avoid long-term downtime maintenance caused by sudden damage to the drill bit, maintain the continuity of drilling operations, and improve overall efficiency. The monitoring component is closely connected to the drill bit, and can accurately track the wear degree of the drill bit cutting edge. According to the wear rate, the operator dynamically adjusts the drilling pressure to avoid excessive drilling pressure accelerating wear, and prevents too low drilling pressure from affecting drilling efficiency, scientifically extending the durability of the drill bit and saving the cost and time of frequent drill bit replacement. Secondly, the drilling monitoring drill bit provided by the present invention has a communication interface at one end of the monitoring pipe body and is arranged close to the drill bit end, and is equipped with an independent power supply compartment, monitoring compartment and control compartment, which ensures the timeliness of data transmission and the stability of equipment operation. This enables the measurement while drilling technology to smoothly provide real-time geological information, and the resistance drilling operation is accurately optimized, which can significantly shorten the construction time and improve the drilling efficiency. At the same time, the stable operating environment is conducive to long-term stable monitoring and timely capture of the drill bit status, laying the foundation for subsequent optimization of drill bit performance and extension of drill bit service life; Third, the drilling monitoring drill bit provided by the present invention is equipped with a sensor group of a three-axis vibration acceleration sensor, a temperature sensor and an angular velocity sensor, which gives the drilling monitoring drill bit a powerful multi-dimensional data collection capability. On the one hand, the vibration, temperature and rotation data acquired in real time can be used as a basis for geological condition evaluation, accurately grasp the physical and mechanical properties of rocks, and serve subsequent mining plans and resource evaluations; on the other hand, based on these data, drill bit anomalies can be detected in time, and drilling pressure parameters can be adjusted to avoid excessive wear, which not only prolongs the life of the drill bit, but also ensures continuous and efficient drilling and improves overall operating efficiency. Fourthly, the drilling monitoring drill bit provided by the present invention is connected to the aviation socket of the monitoring chamber through the aviation plug on the control panel, which is easy to plug and unplug and has a stable connection. During the monitoring while drilling process, the aviation plug is convenient for rapid maintenance or replacement of parts, shortening the equipment debugging time, reducing the downtime, and improving the drilling efficiency. At the same time, the equipment can operate more stably and continuously output accurate data, which continuously helps to accurately evaluate geological conditions and optimize drill bit performance, and indirectly ensures the safety and efficiency of operations; Fifth, in the drilling monitoring drill bit provided by the present invention, the sleeved monitoring inner tube and monitoring outer tube structure, with precise threaded connection and O-ring sealing, enhance the flexibility and stability of the equipment. The flexible structure helps to quickly adjust the monitoring position under complex working conditions, adapt to different geological conditions, ensure the continuity of measurement while drilling, keep real-time geological information, and improve drilling efficiency. Stable sealing and connection protect the internal precision components, maintain equipment performance, help accurately evaluate geological conditions, and reduce safety risks caused by equipment failure. Sixth, in the drilling monitoring drill bit provided by the present invention, the through hole of the monitoring inner tube and the water flow passage design of the monitoring outer tube allow the temperature sensor to accurately obtain data, while avoiding excessive water flow to form a large water pressure outside the monitoring chamber, causing water seepage in the monitoring chamber and affecting the monitoring effect; Seventh, the drilling monitoring drill bit provided by the present invention uses non-magnetic pressure-bearing steel pipe as the pipe material. Its non-magnetic characteristics avoid interference with other underground geomagnetic related operations, ensuring the stability of the overall mining environment; strong pressure-bearing capacity maintains the integrity of the pipe body and protects the internal monitoring components. Stable equipment can continuously output accurate geological data, assist in precise adjustment of drilling operations, improve drilling efficiency, and also lay a solid hardware foundation for accurately assessing geological conditions and reducing safety risks; Eighth, the drilling monitoring drill bit provided by the present invention can be installed only by threaded connection. This simple and reliable installation method greatly simplifies the installation process. Operators can quickly get started and quickly complete the assembly when the monitoring site is frequently changed, reducing drilling delays caused by procrastination in installation and improving drilling efficiency. The equipment that is quickly put into place immediately starts real-time monitoring, which can timely transmit key data to optimize drill bit performance, evaluate geological conditions, and reduce safety risks.

[0020] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the drilling monitoring drill bit described in one technical solution of the present invention; Figure 2 It is a structural schematic diagram of the monitoring component in another technical solution of the present invention; Figure 3 It is a structural schematic diagram of the monitoring component in another technical solution of the present invention; Figure 4 It is a structural schematic diagram of the connecting portion in another technical solution of the present invention; Figure 5 This is a schematic diagram of the installation of the temperature sensor in another technical solution of the present invention; Figure 6 It is a structural schematic diagram of the water flow passage in another technical solution of the present invention; Among them, 100, drill bit; 200, hollow long rod; 1, operating ring; 2, support rod; 3, connection part; 4, monitoring inner tube; 5, monitoring outer tube; 6, male thread; 7, O-ring; 8, communication interface; 9, end cover; 10, temperature sensor; 11, control compartment; 12, monitoring compartment; 13, power compartment; 31, connecting outer tube; 32, connecting inner tube; 33, reinforcing ribs; 51, slotting. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0023] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0024] like Figures 1 to 6 As shown, the present invention provides a drilling monitoring drill bit, comprising: The drill body comprises a drill bit 100 and a hollow long rod 200, one end of the hollow long rod 200 is connected to the drill bit 100 and the other end is provided with an external thread connected to the drill rod, and the inner cavity of the hollow long rod 200 is connected to the water flow channel in the drill bit; A monitoring assembly, which is arranged in the drill bit body, and includes a monitoring tube body for monitoring and a pair of end covers 9 sealedly connected to both ends of the monitoring tube body; Among them, the outer wall of the monitoring tube body is provided with multiple groups of male threads 6 forming an annular structure, and the inner wall of the hollow long rod 200 is provided with multiple groups of female threads matching with the multiple groups of male threads 6. Along the extension direction of the hollow long rod 200 toward the drill bit, the outer diameter gradient of the annular structure formed by the multiple groups of male threads 6 decreases, and the thread lengths of the multiple groups of male threads 6 are the same.

[0025] In the above technical solution, the drilling monitoring drill bit includes a drill bit body and a monitoring component, and the monitoring component is arranged in the drill bit body through a threaded structure, wherein, Figure 1 As shown, the drill body includes a drill bit 100 and a hollow long rod 200. One end of the hollow long rod is connected to the drill bit 100 and the other end can be connected to the drill rod. The drill bit 100 has a high-quality carbide cutting edge, so that the drill bit 100 has excellent wear resistance and cutting performance, and can cope with various hard rock formations. The end of the hollow long rod 200 connected to the drill rod is provided with an external thread that matches the internal thread of the inner wall of the drill rod. The inner cavity of the hollow long rod 200 is connected to the inner cavity of the drill bit to form a smooth water flow channel, which provides a guarantee for subsequent slag removal and cooling during drilling. The monitoring component includes a monitoring tube body and end caps 9 arranged at both ends of the monitoring tube body. The monitoring tube body is made of high pressure resistant and corrosion resistant materials to adapt to the complex and harsh environment underground. A pair of special end caps 9 are precisely installed at both ends of the monitoring tube body. The end caps 9 are sealed and connected to the monitoring tube body. One implementation method is to place a sealing ring between the end caps 9 and the monitoring tube body to ensure a tight seal and prevent the underground moisture and dust from invading the inside of the tube body and affecting the normal operation of the monitoring element. On the outer wall of the monitoring tube body, multiple groups of male threads 6 are processed, and any group of male threads 6 are arranged in an annular structure, that is, any group of male threads 6 are distributed in an array on the circumference of the monitoring tube body. Along the extension direction of the hollow long rod to the drill bit, the outer diameter of the annular structure formed by the multiple groups of male threads 6 gradually decreases, but the thread length of each group of male threads 6 remains consistent. The thread length refers to the length along the male threads 6 along the hollow long rod extending toward the drill bit. The inner wall of the hollow long rod is provided with multiple female threads that cooperate with the multiple groups of male threads 6, and the screwing directions of the multiple female threads are consistent.

[0026] In the above technical scheme, when the drilling monitoring drill bit is installed, first clean the inner wall of the hollow long rod 200 and the outer wall of the monitoring tube body, remove any debris that may be attached, ensure the smoothness of the threaded connection, and monitor the sealing after the end cover 9 is sealed and connected to the monitoring tube body. The integrated monitoring component is inserted into the hollow long rod 200 until a group of male threads 6 at the front end are aligned with the female threads corresponding to the inner wall of the central control long rod 200, rotate and fine-tune, and after feeling the initial engagement of the threads, use a lightweight downhole special wrench to clamp the reserved force application part on the monitoring component, and start to rotate slowly and evenly. Due to the precise design of the male threads 6 and the female threads, the operator gradually screws the monitoring component along the hollow long rod 200 toward the drill bit 100 according to the direction of the threads to complete the assembly of the drilling monitoring drill bit.

[0027] In the above technical solution, the drilling monitoring drill bit has at least the following beneficial effects: 1. The monitoring component is connected to the drill bit body through threads. This connection method abandons the traditional complicated installation method. In the narrow space underground, no large auxiliary lifting equipment is required. The operator can quickly complete the assembly of the monitoring component and the drill bit body with the help of simple tools and according to the guidance of the threads. Compared with the cumbersome installation process of the previous bulky equipment, it greatly shortens the installation time, reduces the investment of manpower and material costs, and improves the overall operation efficiency. 2. The threaded connection provides a reliable mechanical connection force. During the drilling process, the drill bit is subjected to huge axial force, torque and irregular impact from the rock formation. The stable threaded engagement ensures that the monitoring component is firmly fixed in the drill bit body without loosening or displacement, making the monitoring data acquisition stable and accurate, laying a solid foundation for the subsequent accurate assessment of geological conditions and adjustment of drilling strategies; 3. The monitoring pipe body is sealed and connected to the end cover 9, and is equipped with a rubber sealing ring, which can effectively block the harsh environmental media rich in moisture and dust in the well. In long-term drilling operations, it avoids problems such as short circuits caused by moisture and failure of precision monitoring components in the pipe body due to dust contamination, prolongs the service life of the monitoring components, reduces the downtime caused by frequent replacement and maintenance of equipment, and continuously outputs reliable data for mining operations; 4. From the beginning of drilling, the monitoring components installed in the drill bit body can instantly capture various key data. Compared with traditional post-measurement, real-time vibration and temperature data allow operators to quickly know the working status of the drill bit and the characteristics of the rock formation, and adjust the drilling speed, drilling pressure and other parameters in time to avoid ineffective drilling, optimize the entire mining process, and ensure safe and efficient mining.

[0028] like Figure 2As shown, in one of the technical solutions, a communication interface 8 is provided at one end of the monitoring tube body, and the communication interface 8 is arranged close to the drill bit. An independent power supply compartment 13, a monitoring compartment 12 and a control compartment 11 are provided in the monitoring tube body to respectively install a lithium battery, a sensor group and a control board, and the communication interface 8, the lithium battery and the sensor group are all electrically connected to the control board.

[0029] In the above technical solution, the monitoring tube body is provided with an independent power supply compartment 13, a monitoring compartment 12 and a control compartment 11, the power supply compartment 13, the monitoring compartment 12 and the control compartment 11 are used to install a lithium battery, a sensor group and a control board respectively, and one end of the monitoring tube body is provided with a communication interface 8, the communication interface 8, the lithium battery and the sensor group are all electrically connected to the control board. Specifically, the monitoring tube body should be made of high-strength, corrosion-resistant materials to withstand the harsh environment underground, the communication interface 8 at one end of the monitoring tube body should ensure firm installation, and the specifications and protocols of the communication interface 8 should match the subsequent data transmission system. A sensor group is provided in the monitoring chamber 12, and the sensor group includes multiple types, such as a high-sensitivity three-axis vibration acceleration sensor, whose range and accuracy are selected according to the expected vibration range and measurement accuracy requirements underground, so as to accurately measure the vibration of the drill bit during drilling, and a high-precision temperature sensor 10 is selected, whose working range should cover the extreme temperatures that may occur underground to ensure that the underground ambient temperature can be accurately measured, and a reliable angular velocity sensor is selected to monitor the rotation speed of the drill bit. A control panel is provided in the control chamber 11, and the control panel should have a corresponding interface, which can receive data from the sensor group and have the ability to process and convert data, and transmit data to the outside through the communication interface 8. The performance of the control panel should be able to meet the needs of real-time data processing underground to avoid data congestion or processing delays.

[0030] In the above technical solution, the installation method of the monitoring tube body is as follows: install the lithium battery in the power compartment 13 of the monitoring tube body, ensure that the connection is firm, avoid loosening of the battery due to vibration underground, and cause poor contact. At the same time, accurately connect the positive and negative poles of the battery to prevent short circuit. Install the sensor group in the monitoring compartment 12, fix the three-axis vibration acceleration sensor, temperature sensor 10 and angular velocity sensor according to the designed position, ensure that their sensing parts can effectively sense the corresponding physical quantity, for example, the sensing part of the temperature sensor 10 is exposed in a suitable position to accurately measure the temperature; the vibration sensor is installed in a position where it can accurately sense vibration, and at the same time, it must be well protected against shock and impact to avoid damage to the sensor due to strong vibration underground. Install the control board in the control compartment 11, ensure that the electrical connection between the control board and the sensor group and the lithium battery is firm and reliable, use insulated wires for connection to avoid the risk of short circuit, and rationally route the wires to prevent mechanical damage or breakage due to friction in the complex environment underground. Accurately connect the output line of the sensor group to the corresponding input port of the control board to ensure stable signal transmission, connect the output end of the lithium battery to the power input end of the control board to ensure a stable power supply for the control board, and connect the communication interface 8 to the communication port of the control board so that the control board can transmit the processed data to the outside in a timely manner.

[0031] In the above technical solution, the communication interface 8, lithium battery, sensor group and control board are integrated in the monitoring tube body to form a compact system, which avoids the problems of complex wiring and susceptibility to interference caused by the dispersion of components in the traditional monitoring system. This makes the structure of the entire monitoring system more compact and easier to deploy in the narrow space underground, reducing the difficulty and time of installation; the communication interface 8 is set close to the drill bit, which can minimize the delay of data transmission, so that the data collected from the sensor can be quickly and accurately transmitted to the control board for processing, and the processed data can be sent out in time, which helps to achieve real-time monitoring, allowing operators to make drilling decisions quickly based on the latest data information, avoiding decision-making errors caused by data delays, and improving drilling efficiency and safety; the independent power supply compartment 13 provides a dedicated power storage and supply space for the system to ensure that the lithium battery can work stably in the underground environment. The stable energy supply ensures the continuous operation of the sensor group and the control board, and the monitoring will not be interrupted due to energy problems, so that the underground monitoring can be carried out continuously for a long time, providing for long-term drilling operations. Reliable data support; the control panel in the independent control compartment 11 can centrally process and analyze the data collected by the sensor group, and can flexibly adjust the data processing logic according to different geological conditions and drilling conditions underground. For example, under different rock formations, the control panel can adjust the sampling frequency of the sensor, filter or correct abnormal data to ensure that the most valuable and accurate data is provided to the operator; the sensor group equipped with a variety of sensors can monitor the underground environment and drill bit status from multiple dimensions, including information such as vibration, temperature and angular velocity, providing operators with rich and comprehensive information, which helps to better understand the underground geological conditions and drill bit working status, and provides strong support for optimizing drilling processes, extending drill bit life and improving drilling efficiency; the independent compartment design makes the maintenance and replacement of each component more convenient. When a component fails or needs to be upgraded, such as the lithium battery power decays and needs to be replaced, or the control panel needs to update the software version, it can be operated directly in the corresponding compartment without large-scale disassembly of the entire monitoring system, reducing maintenance costs and maintenance time.

[0032] like Figure 3 As shown, in one of the technical solutions, the sensor group includes a three-axis vibration acceleration sensor, a temperature sensor 10 and an angular velocity sensor.

[0033] In the above technical solution, for the three-axis vibration acceleration sensor, according to the expected vibration range and required measurement accuracy of the drilling operation, an acceleration sensor with a range of ±50g and an accuracy of ±0.1g is selected. This sensor should have good impact resistance and anti-interference ability to adapt to the complex vibration environment underground. Before installation, it is calibrated to ensure that its measuring axis is aligned with the axial, radial and tangential directions of the drill bit to accurately measure the vibration acceleration of the drill bit in three directions. The temperature sensor 10 uses a high-precision thermocouple sensor that can measure a range of -20°C to 100°C. The sensor should have a fast response characteristic so that it can quickly feedback information when the underground temperature changes. It is installed near the cutting edge of the drill bit, but it should be well protected to avoid damage due to rock impact during drilling. The angular velocity sensor selects a gyroscope with an accuracy of ±0.5° / s, which can accurately measure the rotation speed and direction of the drill bit. When installing, ensure that its axis coincides with the rotation axis of the drill bit to accurately measure the angular velocity of the drill bit.

[0034] In the above technical solution, the three-axis vibration acceleration sensor can accurately measure the vibration of the drill bit in the three axes during the drilling process, and provide the operator with detailed information on the stress state of the drill bit. Based on this information, it can be determined whether the drill bit is subjected to excessive impact force or lateral force, so as to timely adjust the drilling pressure and drilling speed to avoid damage to the drill bit due to excessive vibration and extend the service life of the drill bit. For example, when the axial vibration acceleration exceeds the set threshold, it indicates that there may be a problem of excessive drilling pressure, and the drilling pressure can be appropriately reduced. The wear of the drill bit can also be determined based on the vibration of the three axes, so that the operator can adjust the drilling pressure parameters in time to avoid excessive wear, thereby extending the service life of the drill bit and improving overall operating efficiency.

[0035] In the above technical solution, the temperature sensor 10 can monitor the ambient temperature downhole in real time, which helps to understand the thermal characteristics of the formation. In some areas with rich geothermal resources or hot water layers, temperature data can help determine the formation structure and geological conditions, and provide a basis for subsequent resource evaluation and mining planning. At the same time, excessively high temperatures may affect equipment performance. By monitoring the temperature, measures such as cooling or replacing heat-resistant equipment can be taken in advance to ensure the safety and stability of drilling operations.

[0036] In the above technical solution, the angular velocity sensor can reflect the rotation state of the drill bit in real time, including the rotation speed and rotation direction. If the angular velocity is found to suddenly drop or become unstable during the drilling process, it may mean that the drill bit has encountered hard rock, the drill is stuck or other abnormal conditions. The operator can adjust the drilling parameters accordingly, such as increasing the torque or suspending drilling for inspection, to prevent equipment damage and improve drilling efficiency.

[0037] In the above technical solution, by combining the data of the three sensors, the operator can more comprehensively grasp the underground geology and the working status of the drill bit. For example, in soft rock formations, it may be observed that the vibration acceleration is small, the temperature is relatively low, and the angular velocity is relatively stable, and the drilling speed can be appropriately increased; while in hard rock formations, the corresponding data will have different characteristics, and the parameters such as drilling pressure, drilling speed and torque can be adjusted according to this information to achieve adaptive drilling for different geological conditions, improve drilling efficiency, and reduce drilling costs. Through continuous monitoring of sensor data, abnormal conditions in the drilling process can be discovered in advance. For example, abnormal fluctuations in vibration acceleration may indicate increased drill bit wear or sudden changes in geological conditions; abnormal changes in angular velocity may mean that the drill bit is stuck or the transmission system fails; abnormal temperature increases may indicate that the equipment is overheated or close to high-temperature formations. These early warning signals can help operators take corresponding preventive measures to avoid more serious failures and safety accidents.

[0038] In one of the technical solutions, the control panel is provided with an outwardly extending aviation plug, and the monitoring chamber 12 is provided with an aviation socket corresponding to the aviation plug. The aviation plug has the characteristics of being easy to plug and unplug. In the underground environment, the operator can quickly complete the connection operation between the control panel and the monitoring chamber 12. Compared with the traditional connection method, there is no need to use complex tools or perform cumbersome wiring steps, which greatly saves installation and maintenance time. A special connection structure is adopted between the aviation plug and the aviation socket, which has a reliable locking mechanism, which can ensure that during the drilling process, even under the influence of complex underground working conditions such as strong vibration, impact and rotation, the connection can be kept firm, prevent data transmission interruption or signal interference caused by loose connection, ensure stable transmission of monitoring data, and provide reliable hardware connection guarantee for continuous drilling monitoring. The aviation plug and the aviation socket are usually made of high-quality conductive materials with good conductivity, which can reduce the loss of signals during transmission and ensure that the data transmission signal quality between the control panel and the monitoring chamber 12 is high. This is crucial for accurate sensor data transmission, avoids data errors caused by poor connection, improves the accuracy and reliability of data, and enables operators to make more scientific drilling decisions based on accurate monitoring data. There are various electromagnetic interference sources in the underground environment, such as motors, power transmission lines, etc. The shielding design of aviation plugs and aviation sockets can effectively reduce the impact of electromagnetic interference on signal transmission, reduce signal crosstalk and noise, and enable the data collected from the sensor group to be transmitted to the control board with higher quality, ensuring the stability and integrity of signal transmission, and providing a clean and accurate data basis for subsequent data analysis and processing.

[0039] In the above technical solution, the connection method of using aviation plugs and aviation sockets makes it easier to disassemble and replace components. This design helps to achieve modular maintenance of the monitoring system. Different modules (such as control panels, monitoring compartments 12) can be maintained as independent units, making maintenance work more targeted and efficient. At the same time, it reduces the skill requirements for professional maintenance personnel, because maintenance personnel do not need to be familiar with the complex connections of the entire system, but only need to focus on the connections and functions of a single module, thereby improving the convenience and operability of equipment maintenance.

[0040] like Figure 2 , Figure 3 and Figure 5 As shown, in one of the technical solutions, the monitoring tube body includes a monitoring inner tube 4 and a monitoring outer tube 5 which are sleeved, and either end of the monitoring inner tube 4 is telescoped to the corresponding end of the monitoring outer tube 5, and the communication interface 8 is provided on one end of the monitoring inner tube 4, and the other end of the monitoring inner tube is closed, and both ends of the monitoring inner tube 4 are provided with external threads that are compatible with the internal threads of the end cover 9, the connection between the monitoring outer tube 5 and the end cover 9 is set with equal diameters, and an O-ring 7 is provided between the end of the monitoring outer tube 5 and the end cover 9.

[0041] In the above technical scheme, the monitoring tube body is arranged into an inner and outer sleeve structure, which, on the one hand, increases the pressure bearing capacity of the monitoring tube body, and the sleeve structure of the monitoring inner tube 4 and the monitoring outer tube 5 provides double-layer protection for the internal precision components. The monitoring outer tube 5, as an outer layer protection, can withstand a certain degree of external impact to prevent the complex downhole environment from damaging the internal monitoring inner tube 4 and the components contained therein. The monitoring inner tube 4 provides a relatively closed internal environment for the internal sensor group, control board and power supply, further ensuring the safety and stability of these components in harsh environments and reducing the risk of equipment failure caused by external environmental factors; on the other hand, the water flow path for monitoring the temperature sensor 10 can be better arranged to reduce the water pressure in the water flow path from generating a large water pressure on the monitoring inner tube 4 and causing damage to the components in the monitoring inner tube 4. In addition, the O-ring 7 arranged between the end of the monitoring outer tube 5 and the end cover 9 enhances the sealing performance of the entire monitoring tube body. In the harsh environment underground, there may be impurities such as water, mud, and dust. The presence of the O-ring 7 can effectively prevent these impurities from entering the monitoring tube body, avoiding damage to internal sensors, control panels, power supplies and other precision components, ensuring the normal operation of the equipment, extending the service life of the equipment, and also ensuring the accuracy and reliability of the monitoring data.

[0042] like Figure 6As shown, in one of the technical solutions, the monitoring inner tube 4 is provided with a through hole for the sensing section of the temperature sensor 10 to pass through, the monitoring outer tube 5 is provided with an inner groove facing the through hole, and the monitoring outer tube 5 is provided with a pair of slots 51 connected to the inner groove to form a water flow passage. The monitoring inner tube 4 is provided with a through hole for the sensing section of the temperature sensor 10 to pass through, and the monitoring outer tube 5 is provided with a water flow passage connected to the through hole, so that the temperature sensor 10 can contact the downhole environment, ensuring that the temperature sensor 10 is in the best position, thereby achieving accurate measurement of the downhole environmental temperature. Compared with installing the temperature sensor 10 in other positions, this design can not only more truly reflect the temperature of the surrounding environment, avoid temperature measurement errors caused by indirect measurement or thermal insulation effects of other components, provide operators with more accurate temperature information, so as to better understand the thermal conditions of the formation, provide a reliable basis for subsequent drilling and mining decisions, but also avoid the adverse effects of water seepage in the monitoring chamber 12 caused by high water pressure.

[0043] like Figure 4 As shown, in one of the technical solutions, a connecting portion 3 is provided on the end cover 9 arranged at the closed end of the monitoring inner tube 4, and the connecting portion 3 includes: A connecting sleeve, comprising a connecting inner tube 32 sleeved on the end cover 9 and a connecting outer tube 31 connected to the connecting inner tube 32 via a reinforcing rib 33; An operating ring 1 is arranged away from the connecting sleeve, and a plurality of supporting rods 2 are arranged between the operating ring 1 and the connecting inner tube 32; Among them, the connecting outer tube 31 is provided with a male thread 6 that cooperates with the female thread on the inner wall of the hollow long rod, and the outer diameter of the annular structure formed by a group of male threads 6 on the connecting outer tube 31 is larger than the outer diameter of the annular structure formed by an adjacent group of male threads 6, and the male thread 6 on the connecting outer tube 31 has the same thread length as the male thread 6 on the monitoring outer tube 5.

[0044] In the above technical solution, the connecting part 3 is arranged near the entrance of the hollow long rod, including a connecting sleeve and an operating ring 1, wherein the connecting sleeve includes a connecting inner tube 32 and a connecting outer tube 31, the connecting inner tube 32 is used to connect with the end cover 9, and the connecting outer tube 31 serves as a bottom support so that the outer diameter of the annular structure formed by the group of male threads 6 arranged thereon is larger than the outer diameter of the annular structure formed by an adjacent group of male threads 6, and the connecting outer tube 31 and the connecting inner tube 32 are connected by reinforcing ribs 33, which ensures the strength of the connecting part 3 and enables it to withstand greater axial force, torque and various external forces in complex downhole environments. During the drilling process, the drill bit and the monitoring assembly will be subjected to strong forces, such as the rotational torque and axial pressure transmitted by the drill rod. The reinforced structure of the connecting part 3 can ensure a firm connection, prevent the connection from loosening or damage due to excessive force, ensure the stable connection between the monitoring assembly and the hollow long rod, and provide a solid structural foundation for the stable operation of the monitoring system.

[0045] In the above technical solution, the operating ring 1 is arranged away from the connecting sleeve through a plurality of support rods 2, and a side of the operating ring 1 away from the connecting sleeve is provided with a pattern that is convenient for wrench operation, so as to facilitate the installation of the monitoring component. The setting of the operating ring 1 provides a convenient operation point for the installation and disassembly process. When the operator installs or disassembles the monitoring component underground, the operator can apply a rotational force through the operating ring 1 to conveniently perform the screwing or separation operation of the thread. A plurality of support rods 2 connect the operating ring 1 and the connecting inner tube 32, so that the operating ring 1 can evenly transmit force when subjected to a large torque, avoiding connection failure or damage caused by uneven force, and improving the reliability and efficiency of the operation. At the same time, because the operating ring 1 is away from the connecting sleeve, the operator has a more spacious operating space during operation, reducing the difficulty of operating in a narrow underground space. The design of the connection portion 3 works in conjunction with other connection parts on the monitoring pipe body (such as the male thread 6 connection of the monitoring outer pipe 5) to form a complete and reliable connection system, ensuring that during long-term drilling operations, the monitoring components will not become loose, leak, or have data transmission interruptions due to connection problems, thereby providing a guarantee for the long-term stable operation of the monitoring system, reducing equipment maintenance and downtime caused by connection failures, and improving the efficiency of mine drilling operations.

[0046] In one of the technical solutions, the monitoring outer tube 5 and the monitoring inner tube 4 are both non-magnetic pressure-bearing steel pipes. Non-magnetic pressure-bearing steel pipes have excellent pressure-bearing capacity. During underground drilling, they will face huge pressure from deep in the formation, especially in deep mines, where the pressure may have a serious impact on the monitoring equipment. Using non-magnetic pressure-bearing steel pipes as monitoring outer tubes 5 and monitoring inner tubes 4 can effectively withstand the high pressure of the formation, ensure that the pipe structure does not deform or rupture, and protect the internal monitoring components, such as sensor groups, control panels, power supplies, etc. from pressure damage, thereby ensuring the integrity and stability of the monitoring equipment and enabling it to work normally in a high-pressure environment. Various electromagnetic equipment may be used in the underground environment, such as electromagnetic detection instruments, underground communication equipment, etc. The magnetic fields generated by these devices will interfere with the pipe body of traditional magnetic materials. Pressure-bearing steel pipes with non-magnetic properties can avoid such magnetic field interference, prevent adverse effects on the sensors and signal transmission lines inside the monitoring equipment, and ensure the accuracy and reliability of the monitoring data. For example, for high-precision measuring instruments in the sensor group, such as triaxial vibration accelerometers, angular velocity sensors, etc., avoiding magnetic field interference can enable them to function normally and accurately measure the physical parameters of the downhole environment, thereby providing accurate monitoring data for drilling operations.

[0047] In one of the technical solutions, the drill bit body uses PDC polycrystalline diamond composite sheets to cut and break rocks. If the composite sheets are worn and broken, they can be hot-melted and replaced with new sheets to improve the efficiency of the drilling operation.

[0048] The present invention further claims protection for a method for installing the drilling monitoring drill bit, wherein the drill bit body is connected to the monitoring assembly via a threaded connection.

[0049] In the above technical solution, when installing the drilling monitoring probe, first check whether the drill bit body shows signs of damage and whether the external thread on the hollow long rod is deformed. At the same time, confirm that all parts of the monitoring assembly are intact, especially the male thread 6 on the outer wall of the monitoring tube body, which should be clear and complete without foreign objects blocking the thread. The operator holds the monitoring assembly and aligns it with the entrance of the hollow long rod of the drill bit body. Since the threaded connection requires precise alignment, the operator can use the limited lighting downhole to slowly extend the monitoring assembly into the hollow long rod so that the male thread 6 on the outer wall of the monitoring tube body initially contacts the female thread on the inner wall of the hollow long rod. During this process, the movement should be kept smooth to prevent the threads from being screwed in the wrong direction. After confirming that the initial alignment is accurate, use professional downhole tools, such as a suitable wrench, to clamp the part of the monitoring assembly that is convenient for applying force (operating ring 1), and start rotating the monitoring assembly so that the male thread 6 gradually screws into the female thread, and extends along the hollow long rod toward the drill bit. As the outer diameter gradient of the annular structure formed by the public thread 6 decreases, attention should be paid to uniform force during the screwing process to ensure that each set of threads can be tightly engaged. Continue to rotate until the monitoring assembly is fully installed. At this time, the monitoring assembly is firmly connected to the drill bit body to form a complete drilling monitoring drill bit. After the installation is completed, the operator checks the connection part 3 again and gently shakes the monitoring assembly to see if there are any signs of looseness; check whether there are any gaps at the threaded connection near the entrance. If any abnormality is found, fine-tune and reinforce it in time to ensure the structural stability of the entire drilling monitoring drill bit, laying the foundation for accurate monitoring in subsequent drilling operations.

[0050] In the above technical solution, the monitoring component and the drill bit body are connected by threaded connection. Compared with the complicated installation interface and process of traditional monitoring equipment, the operation is simpler and more direct. The underground working environment is harsh and the space is limited. Simple threaded connection does not require long-term debugging by professional technicians. Ordinary operators can get started after simple training, which greatly shortens the installation time, reduces mining delays caused by procrastination in the installation process, and improves the overall mining efficiency. The threaded connection can provide sufficient mechanical bite force. During the drilling process, the drill bit is subjected to huge axial force, torque and vibration impact. The stable threaded connection ensures the monitoring component and the drill bit. The head body will not loosen easily, maintaining a stable relative position between the two, so that the monitoring data is not affected by loose connections, and is always accurate and reliable, providing stable data support for subsequent mining decisions; along the extension direction of the hollow long rod toward the drill bit, the outer diameter of the male thread 6 annular structure decreases gradually. This design allows the monitoring component to be smoothly screwed into the drill bit body; the simple threaded connection reduces the dependence on large auxiliary installation equipment and reduces the cost of additional equipment investment. At the same time, quick installation means reducing downtime waiting time and improving equipment utilization, which saves money for mining companies in disguise. It is especially suitable for small mining companies and helps to make advanced monitoring technologies more widely used.

[0051] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the drilling monitoring drill bit and installation method of the present invention will be obvious to those skilled in the art.

[0052] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A drilling monitoring drill bit, characterized in that: include: The drill body comprises a drill bit and a hollow long rod, one end of the hollow long rod is connected to the drill bit and the other end is provided with an external thread connected to the drill rod, and the inner cavity of the hollow long rod is connected to the water flow channel in the drill bit; A monitoring assembly is disposed in the drill bit body, and includes a monitoring tube body for monitoring and a pair of end caps sealedly connected to both ends of the monitoring tube body; Among them, the outer wall of the monitoring tube body is provided with multiple groups of male threads forming an annular structure, and the inner wall of the hollow long rod is provided with multiple groups of female threads matching with the multiple groups of male threads. Along the extension direction of the hollow long rod toward the drill bit, the outer diameter gradient of the annular structure formed by the male threads decreases, and the thread length of the male threads is the same.

2. The drilling monitoring drill bit according to claim 1, characterized in that: A communication interface is provided at one end of the monitoring tube body, and the communication interface is arranged close to the drill bit. An independent power supply compartment, a monitoring compartment and a control compartment are provided in the monitoring tube body to respectively install a lithium battery, a sensor group and a control board. The communication interface, the lithium battery and the sensor group are all electrically connected to the control board.

3. The drilling monitoring drill bit according to claim 2, characterized in that: The sensor group includes a three-axis vibration acceleration sensor, a temperature sensor and an angular velocity sensor.

4. The drilling monitoring drill bit according to claim 3, characterized in that: The control panel is provided with an aviation plug extending outward, and the monitoring compartment is provided with an aviation socket corresponding to the aviation plug.

5. The drilling monitoring drill bit according to claim 3, characterized in that: The monitoring tube body includes a sleeved monitoring inner tube and a monitoring outer tube, either end of the monitoring inner tube is telescoped to the corresponding end of the monitoring outer tube, and one end of the monitoring inner tube is provided with the communication interface, the other end of the monitoring inner tube is closed, both ends of the monitoring inner tube are provided with external threads that are compatible with the internal threads of the end cover, the connection between the monitoring outer tube and the end cover is set with equal diameters, and an O-ring is provided between the end of the monitoring outer tube and the end cover.

6. The drilling monitoring drill bit according to claim 5, characterized in that: The monitoring inner tube is provided with a through hole for the temperature sensor sensing section to pass through, the monitoring outer tube is provided with an inner groove facing the through hole, and the monitoring outer tube is provided with a pair of slots connected to the inner groove to form a water flow passage.

7. The drilling monitoring drill bit according to claim 6, characterized in that: A connecting portion is provided on the end cover disposed at the closed end of the monitoring inner tube, and the connecting portion includes: A connecting sleeve, comprising a connecting inner tube sleeved on the end cover and a connecting outer tube connected to the connecting inner tube via reinforcing ribs; An operating ring, which is arranged away from the connecting sleeve, and a plurality of supporting rods are arranged between the operating ring and the connecting inner tube; Among them, the connecting outer tube is provided with a male thread that cooperates with the female thread on the inner wall of the hollow long rod, and the outer diameter of the annular structure formed by a group of male threads on the connecting outer tube is larger than the outer diameter of the annular structure formed by an adjacent group of male threads, and the male thread on the connecting outer tube has the same thread length as the male thread on the monitoring outer tube.

8. The drilling monitoring drill bit according to claim 7, characterized in that: The monitoring outer tube and the monitoring inner tube are both non-magnetic pressure-bearing steel tubes.

9. The drilling monitoring drill bit according to claim 8, characterized in that: The drill bit body uses PDC polycrystalline diamond composite sheets to cut and break rocks.

10. The method for installing a drilling monitoring drill bit according to any one of claims 1 to 9, characterized in that: The drill bit body is connected to the monitoring component via threads.

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