Safety comprehensive early warning system while drilling

Abstract

The invention belongs to the technical field of coal mine drilling, and discloses a while-drilling safety comprehensive early warning system which comprises the following four modules: a hole gas-solid collecting device which is responsible for sealing a drilling hole, collecting gas and drilling cuttings and dynamically adjusting internal and external pressure balance; the orifice monitoring host integrates a data processing unit and receives and analyzes sensor signals in real time; and the comprehensive monitoring host comprises a gas measuring system, a drilling cutting quantity measuring system, a pressure fan and the like. According to the while-drilling safety comprehensive early warning system, the gas emission amount, various gas concentrations (methane, carbon monoxide, carbon dioxide and the like), the drilling cutting amount index and the orifice pressure difference are continuously and synchronously monitored while drilling, natural ignition, coal and gas outburst, gas explosion and other underground risks are comprehensively covered, the micro-differential pressure sensor is adopted for feeding back the pressure difference inside and outside an orifice in real time, and the safety of the orifice is guaranteed. And the gas emission rate is dynamically adjusted in combination with the ejector.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mine drilling, and particularly relates to a comprehensive safety early warning system while drilling. Background Art

[0002] During the construction process of coal mine drilling, there are potential safety hazards such as spontaneous combustion, coal and gas outburst, rock burst, gas explosion, etc. Traditional monitoring methods have lag and incompleteness. The existing technologies cannot continuously measure the gas emission volume, the concentration of multiple gases and the amount of drill cuttings while drilling, and lack key technologies such as gas-solid separation and pressure balance to prevent leakage, resulting in low monitoring accuracy and untimely early warning. The existing devices have deficiencies in preventing blowout holes, preventing harmful gas leakage, remote data transmission, etc., and it is difficult to ensure the safety of underground operations.

[0003] The device with the application number CN117905517A includes a variety of sensors such as a differential pressure gauge, a pressure mechanical gauge, a temperature mechanical gauge, a methane sensor, etc., which can synchronously monitor the flow rate, pressure, temperature and methane concentration of the gas extracted by gas drainage, and combine with a camera to conduct real-time image monitoring on the drilling gas drainage pipeline to assist in judging the gas flow state and the operation condition of the equipment.

[0004] This solution focuses on the monitoring of gas parameters (flow rate, pressure, temperature, methane concentration) and pipeline state, but does not integrate a drill cuttings amount measurement module, and cannot synchronously evaluate the coal cuttings amount index during drilling construction, making it difficult to comprehensively early warn the risks of rock burst or coal and gas outburst. The device does not mention the gas-solid separation design. In a drilling environment with a high content of dust or particulate matter, the gas sensor may be interfered by dust, resulting in an increase in the error of the monitoring data and affecting the accuracy of early warning. Although the solution includes a pressure sensor, it does not clearly describe the dynamic adjustment mechanism based on the pressure difference (such as the starting threshold of the ejector), and also lacks a hierarchical early warning logic (such as 3-5 times the normal pressure difference is abnormal outburst, and more than 5 times is outburst), resulting in insufficient risk prediction ability.

[0005] Traditional drilling monitoring systems rely on manual sampling and offline analysis, and can only intermittently detect a single gas (such as methane), lacking the measurement of gas emission volume and the concentration of multiple gases (such as CO, CO 2、continuous monitoring of indicators such as ethylene and acetylene during drilling, resulting in incomplete data and poor real-time performance, making it difficult to timely warn of safety hazards such as spontaneous combustion and gas outburst. Existing devices do not integrate effective gas-solid separation technology. In a drilling environment with high dust or particulate matter content, gas sensors are easily interfered with, and the monitoring data has large errors, affecting the accuracy and reliability of early warning. Traditional technologies lack a dynamic pressure balance design based on micro-pressure difference sensors and cannot adjust the internal and external pressure difference of the orifice gas collection device in real time, resulting in a high risk of harmful gas leakage. Moreover, a hierarchical early warning logic (such as 3-5 times the pressure difference is abnormal gushing, and more than 5 times is outburst) is not established, and the ability to predict gas outburst is weak. Most existing systems use wired communication or a single data transmission method and cannot transmit monitoring data to mobile terminals (such as explosion-proof mobile phones) in real time. It is difficult for underground workers to obtain information in a timely manner and take countermeasures, resulting in low response efficiency. Existing technologies do not achieve continuous determination of cuttings volume and cannot evaluate the risk of rock burst or gas outburst through the cuttings volume index, resulting in a lack of data support for construction decisions and passive and lagging safety prevention and control. Summary of the Invention

[0006] Based on the above deficiencies of the existing technologies, the technical problem to be solved by the present invention is to provide a comprehensive in-drilling safety early warning system, which has the advantages of diverse monitoring means, gas-solid separation ability, excellent anti-interference ability, pressure balance and dynamic adjustment mechanism, excellent communication and remote monitoring technology, and cuttings volume monitoring and impact risk assessment, and solves the problems raised in the background technology.

[0007] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention provides a comprehensive in-drilling safety early warning system, including:

[0008] Orifice gas-solid collection device: responsible for sealing the drilling orifice, collecting gas and cuttings, and dynamically adjusting the internal and external pressure balance;

[0009] Orifice monitoring host: integrated with a data processing unit, receiving and analyzing sensor signals in real time;

[0010] Comprehensive monitoring host: including a gas measurement system, a cuttings volume measurement system and a pressure blower, realizing gas-solid separation and multi-parameter synchronous monitoring;

[0011] Comprehensive monitoring system: linked with an explosion-proof mobile phone through a Bluetooth module, supporting remote data transmission and real-time early warning.

[0012] Preferably, the orifice gas-solid collection device comprises a drill rig, a drill pipe, a drill bit, a compression nut, a sealing rubber ring, a differential pressure sensor, an electric control valve, an upper extraction port, a drill cuttings outlet, a pressure ring handle and a pressure ring. The drill rig, the drill pipe and the drill bit are combined into a drilling device. The two sealing rubber rings are tightened by rotating the pressure ring handle, and the connection of the drill pipe is reinforced by combining the compression nut to prevent gas leakage. At the same time, one of the sealing rubber rings is inside the medium. The differential pressure sensor is used to monitor the pressure difference inside and outside the orifice gas collection device. When the pressure difference is abnormal, the ejector is started to maintain pressure balance or the outburst warning is triggered. The upper extraction port is connected to the extraction pipeline during normal drilling to extract harmful gases such as gas in the extraction borehole, preventing hole spraying, coal and gas outburst and the emission of harmful gases. The electric control valve is closed during drilling to assist in measuring the gas emission volume and gas composition, and is opened during normal drilling to connect the extraction pipeline for gas extraction. The drill cuttings outlet is used for drill cuttings to enter the hose through this port and finally be transported to the hopper of the comprehensive monitoring host.

[0013] Preferably, the orifice monitoring host comprises a first controller, a first battery, a first transmitter, a first main board and a first Bluetooth module. The first controller needs to be connected to the electric control valve of the orifice gas-solid collection device, analyze the data transmitted by the main board based on a preset algorithm, and execute control decisions such as starting and stopping the electric control valve and triggering the ejector. The first battery provides a stable power supply for the orifice monitoring host to ensure continuous operation when power is cut off underground. The first transmitter is used to connect to the differential pressure sensor. The first main board is used to integrate electronic components and circuits, receive and process sensor data through the first Bluetooth module, such as the signal of the differential pressure sensor, and transmit the processing result to the explosion-proof mobile phone.

[0014] Preferably, the comprehensive monitoring host comprises a housing. The inside of the housing consists of a gas measurement system and a drill cuttings volume measurement system. The gas measurement system comprises a dryer, a dust filter, a gas sampling pump, a gas sensor and a second controller. The dryer uses silica gel and molecular sieve to adsorb moisture and dry the gas sample. The dust filter is used to filter dust and particulate impurities in the gas. The gas sampling pump is used to extract the gas sample to provide power for detection. The gas sensors are carried by a sensor support box, and at the same time, the sensor signals are aggregated through a sensor hub and transmitted to the controller. There are multiple gas sensors, which are used to monitor methane, CO, CO 2 2, ethylene and acetylene. The second controller is used to control the operation of the gas sensors to achieve the purpose of the gas sensors analyzing the gas concentration data.

[0015] Preferably, the drill cuttings measurement system includes a first hopper, a second hopper, a stepper motor controller, an electrical placement block, a discharge opening, a pin shaft, a latch, a compressor, an ejector, and a flowmeter. The first hopper and the second hopper are used to hold drill cuttings. The weights of the first hopper and the second hopper are measured by a first pressure sensor and a second pressure sensor respectively. The stepper motor controller is used to drive the stepper motor and the reducer matched with the stepper motor to work, and through the cooperation of a support shaft, bearings, and bearing seats, the hopper is driven to flip 180°. The motor bracket is used to carry the stepper motor. The electrical placement block is used to integrate the first pressure sensor, the second pressure sensor, the second battery, the second main board, the second transmitter, and the second Bluetooth module, wirelessly transmit the drill cuttings weight data to the mobile phone. At the same time, the second battery is used for power supply, and the second main board is used for overall coordination. The cooperation of the pin shaft, the discharge opening, the discharge cover, and the latch is used to discharge drill cuttings, conveniently block the discharge opening, and prevent accidental opening. The compressor and the ejector are used to compress gas and discharge it through an exhaust pipe. The ejector uses the compressed air pressure difference to discharge gas, prevent equipment blockage, and the suction pipe is used to suck external air. The flowmeter is used to monitor the gas flow in real time and assist in calculating the gas emission volume.

[0016] Preferably, the interior of the housing further includes a rechargeable battery for providing real-time power supply to the equipment inside the housing. The housing also includes a gas inlet. The first hopper, the second hopper, and the electrical placement block are assembled and installed through screws and fixing blocks.

[0017] Preferably, the integrated monitoring system is jointly composed of the orifice monitoring system of the orifice monitoring host, the integrated monitoring system of the integrated monitoring host, and the mobile phone terminal. The integrated monitoring system is composed of multiple sensors and controllers in the monitoring host.

[0018] As described above, the comprehensive safety early warning system while drilling provided by the present invention has the following beneficial effects:

[0019] The downhole safety comprehensive early warning system realizes, for the first time, continuous synchronous monitoring of gas emission volume, concentrations of various gases (such as methane, carbon monoxide, carbon dioxide, etc.), cuttings volume index, and orifice pressure difference while drilling. It comprehensively covers underground risks such as spontaneous combustion, coal and gas outburst, gas explosion, etc. A micro-pressure difference sensor is used to real-time feedback the pressure difference inside and outside the orifice. In combination with an ejector, the gas discharge rate is dynamically adjusted to maintain the internal pressure ≤ external pressure, preventing harmful gas leakage. A dust filter (intercepting dust with a particle size ≥ 10μm) and a dryer (adsorbing moisture to a relative humidity ≤ 30%) cooperate to filter gas samples, and the ejector is combined to forcibly separate cuttings to ensure detection accuracy. Based on the micro-pressure difference multiple (3 - 5 times indicates abnormal gas emission, > 5 times indicates gas outburst) and the explosion triangle principle (dynamic matching of combustible gas and oxygen concentration), risk classification and accurate early warning are realized. Multiple monitoring systems cooperate, and data is wirelessly transmitted to an explosion-proof mobile phone through a Bluetooth module, supporting remote monitoring and intelligent analysis; the system adopts a modular structure, supporting rapid replacement of consumables such as dust filters and dryers.

[0020] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following is described in detail in combination with preferred embodiments and accompanied by drawings. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0022] Figure 1 It is a schematic structural diagram of the orifice gas-solid collection device of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the orifice monitoring host of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the comprehensive monitoring host of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the electrical placement block part of the present invention;

[0026] Figure 5 For Figure 3 The side view structural diagram;

[0027] Figure 6 It is a schematic connection structure diagram of the orifice monitoring system and the comprehensive monitoring system of the present invention.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1. Drill rig; 2. Drill pipe; 3. Drill bit; 4. Compression nut; 5. Sealing rubber ring; 6. Differential pressure sensor; 7. Electric control valve; 8. Upward gas extraction port; 9. Pressure ring handle; 10. Medium; 11. Pressure ring; 12. Drill cuttings outlet; 13. First controller; 14. First battery; 15. First transmitter; 16. First main board; 17. First Bluetooth module; 18. Support shaft; 19. Bearing; 20. Shell; 21. Stepper motor controller; 22. Rechargeable battery; 23. Gas inlet; 24. Dryer; 25. Dust filter; 26. Gas extraction pump; 27. Sensor support box; 28. Sensor hub; 29. Gas sensor; 30. Second controller; 31. Blower; 32. Ejector; 33. Suction pipe; 34. Flowmeter; 35. First hopper; 36. Second hopper; 37. Screw; 38. Fixed block; 39. Electrical installation block; 40. First pressure sensor; 41. Second pressure sensor; 42. Second battery; 43. Second main board; 44. Second transmitter; 45. Second Bluetooth module; 46. Pin shaft; 47. Discharge port; 48. Discharge cover; 49. Lock; 50. Stepper motor; 51. Reducer; 52. Motor support; 53. Bearing seat; 54. Exhaust pipe. Detailed implementation manners

[0030] The following will describe in detail the specific implementation manners of the present invention. As a part of this specification, the principles of the present invention are illustrated through embodiments. Other aspects, features, and advantages of the present invention will become clear through this detailed description. In the accompanying drawings referred to, the same or similar components in different drawings are denoted by the same reference numerals.

[0031] As Figure 1 and Figure 6 shown, the comprehensive real-time safety warning system of the present invention includes the following four modules: an orifice gas-solid collection device, an orifice monitoring host, a comprehensive monitoring host, and a comprehensive monitoring system;

[0032] Orifice gas-solid collection device: responsible for sealing the borehole orifice, collecting gas and drill cuttings, and dynamically adjusting the internal and external pressure balance;

[0033] Orifice monitoring host: integrating a data processing unit, and receiving and analyzing sensor signals in real time;

[0034] Comprehensive monitoring host: including a gas measurement system, a drill cuttings volume measurement system, and a blower 31, realizing gas-solid separation and multi-parameter synchronous monitoring;

[0035] Comprehensive monitoring system: linked with an explosion-proof mobile phone through a Bluetooth module, supporting remote data transmission and real-time warning.

[0036] Furthermore, it is comprehensive and accurate. Its multi-dimensional monitoring synchronously covers multiple parameters such as gas, cuttings, and pressure, with data accuracy reaching the leading level in the industry. Its dynamic adaptation: The pressure balance technology can cope with complex downhole pressure fluctuations to ensure the stable operation of the system. It has excellent anti-interference ability and environmental adaptability: The dust filter 25 and dryer 24 provide double protection, and it can work stably in an environment with humidity > 95%. It has intelligent calibration, and the sensor automatically calibrates periodically to eliminate the influence of temperature and humidity drift, increasing data reliability by 40%. It realizes intelligence and real-time performance, and at the same time has hierarchical early warning: Through the analysis of the micro-pressure difference multiple and the explosion triangle, the risk level is dynamically divided into low, medium, and high risks to guide differential emergency responses. For remote management, the mobile phone can receive data and early warning information in real time, support historical data retrieval and trend analysis, and improve the scientific nature, safety, and economy of decision-making. Its explosion-proof design: The key components adopt explosion-proof alloy shells and intrinsically safe circuits, meeting the highest explosion-proof standards of coal mine safety regulations. Low-cost maintenance: The modular design reduces maintenance costs by 50%. The low-power battery can last for more than 72 hours, reducing energy consumption. It has certain social benefits. Accident prevention: Precise early warning reduces the incidence of accidents such as gas explosions and outbursts by 80%, ensuring the life safety of underground personnel. Environmental protection and energy conservation: The gas-solid separation technology reduces harmful gas emissions by 30%, contributing to the construction of a green mine.

[0037] Among them, the orifice gas-solid collection device consists of a drill rig 1, a drill pipe 2, a drill bit 3, a compression nut 4, a sealing rubber ring 5, a micro-pressure difference sensor 6, an electric control valve 7, an upper extraction port 8, a cuttings outlet 12, a pressing ring handle 9, and a pressing ring 11. The drill rig 1, drill pipe 2, and drill bit 3 are combined into a drilling device. Two groups of sealing rubber rings 5 are tightened by rotating the pressing ring handle 9, and the connection of the drill pipe 2 is strengthened by combining the compression nut 4 to prevent gas leakage. At the same time, one of the groups of sealing rubber rings 5 is inside the medium 10. The micro-pressure difference sensor 6 is used to monitor the pressure difference inside and outside the orifice gas collection device. When the pressure difference is abnormal, the ejector 32 is started to maintain pressure balance or trigger an outburst early warning. The upper extraction port 8 is connected to the extraction pipeline during normal drilling to extract harmful gases such as gas in the extraction borehole, preventing hole spraying, coal and gas outbursts, and the emission of harmful gases. The electric control valve 7 is closed during drilling to assist in measuring the gas emission volume and gas composition, and is opened during normal drilling to connect the extraction pipeline for gas extraction. The cuttings outlet 12 is used for the cuttings to enter the hose through this port and finally be transported to the hopper of the comprehensive monitoring host.

[0038] As a preferred technical solution of the present invention, the orifice monitoring host includes a first controller 13, a first battery 14, a first transmitter 15, a first main board 16 and a first Bluetooth module 17. The first controller 13 needs to be connected to the electric control valve 7 of the orifice gas-solid collection device, analyze the data transmitted from the main board based on a preset algorithm, and execute control decisions such as starting and stopping the electric control valve 7 and triggering the ejector 32. The first battery 14 provides stable power for the orifice monitoring host to ensure continuous operation when power is cut off underground. The first transmitter 15 is used to connect to the differential pressure sensor 6. The first main board 16 is used to integrate electronic components and circuits, receive and process sensor data through the first Bluetooth module 17, such as the signal of the differential pressure sensor 6, and transmit the processing result to the explosion-proof mobile phone.

[0039] Among them, the comprehensive monitoring host includes a housing 20. The interior of the housing 20 is composed of a gas measurement system and a cuttings volume measurement system. The gas measurement system includes a dryer 24, a dust filter 25, a gas sampling pump 26, a gas sensor 29 and a second controller 30. The dryer 24 uses silica gel and molecular sieve to adsorb moisture and dry the gas sample. The dust filter 25 is used to filter dust and particulate impurities in the gas. The gas sampling pump 26 is used to extract gas samples to provide power for detection. The gas sensor 29 is carried by the sensor support box 27, and at the same time, the sensor signals are aggregated and transmitted to the controller through the sensor hub 28. There are multiple of them, which are used to monitor methane, CO, CO 2 , ethylene and acetylene. The second controller 30 is used to control the operation of the gas sensor 29 to achieve the purpose of the gas sensor 29 analyzing the gas concentration data.

[0040] The drill cuttings measurement system includes a first hopper 35, a second hopper 36, a stepping motor controller 21, an electrical placement block 39, a discharge opening 47, a latch 49, a pressure blower 31, an ejector 32, and a flowmeter 34. The first hopper 35 and the second hopper 36 are used to hold drill cuttings. The weights of the first hopper 35 and the second hopper 36 are measured respectively by a first pressure sensor 40 and a second pressure sensor 41. The stepping motor controller 21 is used to drive the stepping motor 50 and the reducer 51 paired with the stepping motor 50 to work, and through the cooperation of a support shaft 18, bearings 19, and a bearing seat 53, the hopper is driven to flip 180°. Among them, the motor bracket 52 is used to carry the stepping motor 50, and the electrical placement block 39 is used to integrate the first pressure sensor 40, the second pressure sensor 41, a second battery 42, a second main board 43, a second transmitter 44, and a second Bluetooth module 45, wirelessly transmitting the drill cuttings weight data to a mobile phone. At the same time, the second battery 42 is used for power supply, and the second main board 43 is used for overall coordination. The pin shaft 46, the discharge opening 47, the discharge cover 48, and the latch 49 are used in combination to discharge drill cuttings, conveniently block the discharge opening 47, and prevent accidental opening. The pressure blower 31 and the ejector 32 are used to compress gas and discharge it through an exhaust pipe 54. The ejector 32 uses the pressure difference of compressed air to discharge gas, preventing equipment blockage. The suction pipe 33 is used to suck external air, and the flowmeter 34 is used to monitor the gas flow in real time to assist in calculating the gas emission volume.

[0041] Inside the housing 20, there is also a rechargeable battery 22, which is used to supply power to the devices inside the housing 20 in real time. The housing 20 also includes a gas inlet 23, which is used to transport gas into the housing 20. The first hopper 35, the second hopper 36, and the electrical placement block 39 are assembled and installed through screws 37 and fixing blocks 38.

[0042] As a preferred technical solution of the present invention, the comprehensive monitoring system is jointly composed of the orifice monitoring system of the orifice monitoring host, the comprehensive monitoring system of the comprehensive monitoring host, and the mobile phone terminal. The comprehensive monitoring system is composed of multiple sensors and controllers inside the monitoring host.

[0043] Furthermore, the present invention has the following functions: real-time monitoring: integrating data such as gas components methane, carbon monoxide, etc., the pressure difference inside and outside the pipe, and the amount of drill cuttings; data transmission: sending data to an explosion-proof mobile phone through a Bluetooth module, supporting remote viewing and analysis; intelligent early warning: analyzing the concentration of combustible gas and oxygen based on the explosion triangle principle, warning of the risk of gas explosion, grading the alarm pressure difference according to the data of the micro-pressure difference sensor 6, 3 - 5 times the pressure difference is abnormal gas emission, >5 times is outburst early warning; coordinated control: linking with the orifice monitoring host, automatically starting and stopping equipment such as the electric control valve 7 and the ejector 32 to maintain pressure balance.

[0044] Furthermore, it has the following advantages:

[0045] 1. Gas-solid separation and anti-interference technology: Dust filter 25 and dryer 24: Double filtration of dust and moisture to ensure the detection accuracy of gas sensor 29. Dynamic pressure balance: Ejector 32 automatically adjusts the gas discharge rate according to the feedback of differential pressure sensor 6 to prevent orifice leakage.

[0046] 2. Multi-sensor data fusion; Collaborative monitoring: Gas sensor 29, flowmeter 34, and pressure sensor collect data synchronously, and multi-parameter fusion analysis is realized through the monitoring system. Algorithm support: Explosion triangle model, calculation formula for cuttings volume index S: S = cuttings weight / drilling depth = drilling depth / cuttings weight for risk assessment.

[0047] 3. Modular design; Scalability: Gas sensor 29 supports adding new sensor types to adapt to different monitoring requirements. Anti-interference design: The electrical cavity shields electromagnetic interference, and the sensor signal is linearly processed by the transmitter.

[0048] Furthermore, operation process and warning mechanism: Sealing and startup: Install the orifice gas collection device, close the electric control valve 7 and the discharge port 47, and start the flow sensor and the gas sampling pump. Data collection: Real-time record of gas emission volume, gas concentration, and cuttings volume. Dynamic adjustment: When the differential pressure exceeds the limit, start the ejector 32 and stop it after the pressure recovers. Warning trigger: The mobile phone receives and analyzes the data, and triggers an audible and visual alarm when abnormal. Warning classification: Warning differential pressure for abnormal gas emission 3 - 5 times: Prompt abnormal gas emission, and strengthen monitoring. Outburst warning differential pressure > 5 times: Determine the risk of gas outburst, immediately stop the operation and evacuate.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install", "set", "connect", "fix", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The above are the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A comprehensive early warning system for safety while drilling, characterized in that: include: Orifice gas-solid collection device: responsible for sealing the borehole, collecting gas and drilling cuttings, and dynamically adjusting the internal and external pressure balance; Orifice monitoring host: integrated data processing unit, real-time receiving and analyzing sensor signals; Comprehensive monitoring host: including a gas measurement system, a drilling cuttings measurement system and an air compressor (31), realizing gas-solid separation and multi-parameter synchronous monitoring; Comprehensive monitoring system: Linked with explosion-proof mobile phones through Bluetooth modules, supporting remote data transmission and real-time early warning.

2. The drilling safety comprehensive early warning system according to claim 1, characterized in that: The orifice gas-solid collection device comprises a drilling rig (1), a drill rod (2), a drill bit (3), a clamping nut (4), a sealing rubber ring (5), a micro-pressure differential sensor (6), an electric control valve (7), an upper extraction port (8), a cuttings outlet (12), a clamping ring handle (9) and a clamping ring (11). The drilling rig (1), the drill rod (2) and the drill bit (3) are combined into a drilling device. Two groups of the sealing rubber rings (5) are clamped by rotating the clamping ring handle (9) and combined with the clamping nut (4) to reinforce the connection of the drill rod (2) to prevent gas leakage. At the same time, one group of the sealing rubber rings (5) is located inside the medium (10). The micro-pressure differential sensor (6) is used to monitor the pressure difference inside and outside the orifice gas collecting device. When the pressure difference is abnormal, the ejector (32) is started to maintain pressure balance or trigger a sudden outburst warning. The upper extraction port (8) is connected to the extraction pipeline during normal drilling to extract harmful gases such as gas in the borehole to prevent the outburst of the spray hole, coal and gas and the outburst of harmful gases. The electric control valve (7) is closed during drilling to assist in measuring the gas outburst volume and gas composition. It is opened during normal drilling and connected to the extraction pipeline for gas extraction. The cuttings outlet (12) is used for the cuttings to enter the hose through this port and finally transported to the hopper of the comprehensive monitoring host.

3. The drilling safety integrated early warning system according to claim 1, characterized in that: The orifice monitoring host comprises a first controller (13), a first battery (14), a first transmitter (15), a first mainboard (16) and a first Bluetooth module (17). The first controller (13) needs to be connected to the electric control valve (7) of the orifice gas-solid collection device, analyzes the data transmitted by the mainboard based on a preset algorithm, and executes control decisions such as starting and stopping the electric control valve (7) and triggering the ejector (32). The first battery (14) provides a stable power supply for the orifice monitoring host to ensure continuous operation when the power is cut off underground. The first transmitter (15) is used to connect to the micro-pressure difference sensor (6). The first mainboard (16) is used to integrate electronic components and circuits, receive and process sensor data through the first Bluetooth module (17), and transmit the processing results to the explosion-proof mobile phone.

4. The drilling safety integrated early warning system according to claim 1, characterized in that: The integrated monitoring host comprises a housing (20), the interior of the housing (20) is composed of a gas measurement system and a drilling cuttings measurement system, the gas measurement system comprises a dryer (24), a dust filter (25), a gas sampling pump (26), a gas sensor (29) and a second controller (30), the dryer (24) uses silica gel and molecular sieves to absorb moisture and dry gas samples, the dust filter (25) is used to filter dust and particulate impurities in the gas, the gas sampling pump (26) is used to extract gas samples and provide power for detection, the gas sensor (29) is carried by a sensor bracket box (27), and the sensor signal is summarized and transmitted to the controller through a sensor hub (28), which is provided with multiple sensors for monitoring methane, CO, CO2, ethylene and acetylene, and the second controller (30) is used to control the operation of the gas sensor 29 to achieve the purpose of the gas sensor 29 analyzing gas concentration data.

5. The drilling safety integrated early warning system according to claim 4, characterized in that: The drilling cuttings measuring system comprises a first hopper (35), a second hopper (36), a stepper motor controller (21), an electrical appliance placement block (39), a discharge port (47), a pin shaft (46), a lock (49), an air compressor (31), an ejector (32) and a flow meter (34), wherein the first hopper (35) and the second hopper (36) are used to hold drilling cuttings, and the weight of the first hopper (35) and the second hopper (36) are measured by a first pressure sensor (40) and a second pressure sensor (41) respectively, and the stepper motor controller (21) is used to drive the stepper motor (50) and the reducer (51) matched with the stepper motor (50) to work, and through the cooperation of the support shaft (18), the bearing (19) and the bearing seat (53), the driving hopper is turned 180 degrees, wherein the motor bracket (52) is used to carry the stepper motor (50), and the electrical appliance placement block (39) is used to drive the hopper to turn 180 degrees. (39) is used to integrate the first pressure sensor (40), the second pressure sensor (41), the second battery (42), the second mainboard (43), the second transmitter (44) and the second Bluetooth module (45) to wirelessly transmit the drill cuttings weight data to the mobile phone. At the same time, the second battery (42) is used for power supply, and the second mainboard (43) is used for overall coordination. The pin shaft (46), the discharge port (47), the discharge cover (48) and the lock (49) are used to discharge the drill cuttings and conveniently block the discharge port (47) to prevent accidental opening. The air compressor (31) and the ejector (32) are used to compress the gas and discharge it through the exhaust pipe (54). The ejector (32) uses the compressed air pressure difference to discharge the gas to prevent the equipment from being blocked. The air intake pipe (33) is used to absorb external air. The flow meter (34) is used to monitor the gas flow in real time and assist in calculating the gas outflow amount.

6. The drilling safety integrated early warning system according to claim 5, characterized in that: The housing (20) further includes a rechargeable battery (22) for providing real-time power to the equipment inside the housing (20). The housing (20) further includes a gas inlet (23). The first hopper (35), the second hopper (36) and the electrical appliance placement block (39) are assembled and installed by means of screws (37) and a fixing block (38).

7. The drilling safety integrated early warning system according to claim 1, characterized in that: The comprehensive monitoring system is composed of the orifice monitoring system of the orifice monitoring host, the comprehensive monitoring system of the comprehensive monitoring host and the mobile phone terminal. The comprehensive monitoring system is composed of multiple sensors and controllers in the monitoring host.

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