Wireless intelligent ignition device for coal underground ignition

Abstract

The utility model provides a wireless intelligent ignition device for coal underground ignition, which comprises a shell, a heating rod and a gas supply pipe, a temperature detection module is arranged on the heating rod, a gas component detection module is arranged on the gas supply pipe, the heating rod is connected with a heating component, the gas supply pipe is connected with a gas supply component, and a battery pack is arranged in the shell. A dragging device is further arranged at the rear end of the shell, the battery pack is connected with a charging butt joint module, and an electric quantity digital display sensing module and a data analysis joint control module are further arranged on the battery pack. The heating rod, the heating assembly, the gas supply pipe and the gas supply assembly are arranged in the shell, and smooth ignition is guaranteed; the temperature detection module and the gas component detection module can adjust the temperature of the heating rod in time, damage to the heating rod caused by too high temperature is avoided, and gas inlet of the gas inlet pipe is adjusted according to the detected gas content; the dragging device can move underground and return to be charged when the electric quantity is insufficient, and automatic ignition, moving and charging of the device are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of underground coal ignition, and in particular to a wireless intelligent ignition device for underground coal ignition. Background Technology

[0002] An underground electronic igniter is a safety ignition device used in underground environments (such as mines, tunnels, oil and gas wells), and its design must consider special requirements such as explosion-proof, waterproof, and corrosion-resistant properties. Existing underground ignition devices include:

[0003] 1. Electric heating igniter: This device uses electrical energy to heat a resistance wire or electric arc to generate high temperatures, directly igniting the coal seam or auxiliary fuels (such as propane or diesel). It requires a power supply and necessitates an underground cable or battery system. Since underground drilling depths are often 500–1000 meters, cable laying is costly and difficult to implement.

[0004] 2. Chemical fuel igniter: Flammable chemical fuels (such as propane, natural gas, diesel) and oxidizers (oxygen / air) are injected through a borehole, and the coal seam is ignited after ground ignition. An ignition point must be preset, and its position cannot be dynamically adjusted. Furthermore, there are safety hazards associated with the transportation and storage of chemical fuels.

[0005] 3. Plasma igniter: This device uses a plasma torch (an electric arc ionized gas) to generate ultra-high temperatures (above 3000℃) to directly crack the molecular structure of coal. The equipment is very expensive (requiring temperatures above 3000℃), limiting its use to laboratory settings and making large-scale application difficult.

[0006] 4. Hot air / steam ignition system: High-temperature hot air (800–1200℃) or superheated steam is injected into the coal seam for ignition via heat conduction. This requires supporting ground heating equipment, making the system complex and energy-intensive.

[0007] 5. Spontaneous combustion assisted ignition: This method utilizes the exothermic properties of coal's natural oxidation, accelerating the temperature rise to the ignition point through oxygen injection. However, it relies on the natural oxidation of the coal seam, resulting in low control precision and a high risk of runaway combustion.

[0008] Existing ignition devices suffer from problems such as limited power supply, poor mobility, inaccurate control, and insufficient safety. Utility Model Content

[0009] This utility model aims to provide a wireless intelligent ignition device for underground coal ignition, which can be wirelessly powered to ensure the device can move underground and realize intelligent control of the ignition, movement and charging process.

[0010] Therefore, the technical solution adopted by this utility model is as follows: a wireless intelligent ignition device for underground coal ignition, comprising a shell, a heating rod disposed within the shell, and a gas supply pipe disposed at the center of the heating rod. The front end of the heating rod extends out of the shell and is provided with a temperature detection module. The front end of the gas supply pipe extends out of the heating rod and is provided with a gas component detection module. A heating component is connected to the heating rod, and a gas supply component is connected to the gas supply pipe. A battery pack for powering the heating component is disposed inside the shell. A dragging device for moving within the coal seam is also disposed at the rear end of the shell. A charging docking module for connecting and charging with a wireless charging pack is connected to the battery pack. A power display sensor module and a data analysis and control module are also disposed on the battery pack. The data analysis and control module is electrically connected to the power display sensor module, the temperature detection module, the gas component detection module, the gas supply component, the heating component, and the dragging device, respectively, for realizing automatic ignition, movement, and charging of the device.

[0011] More preferably, the heating assembly includes a resistance wire wound around a heating rod and two electrical leads connected to the heating rod, with the free ends of the electrical leads respectively connected to the positive and negative power supply terminals of the battery pack.

[0012] More preferably, the battery pack is surrounded by a heat-insulating material.

[0013] More preferably, the charging docking module adopts a docking buckle.

[0014] More preferably, the gas supply assembly includes multiple gas storage tanks disposed within the housing and metering pumps disposed on the gas storage tanks. Each metering pump is electrically connected to the data analysis and control module to control the gas supply speed of the gas storage tanks.

[0015] The beneficial effects of this utility model are as follows: A data analysis and control module is installed inside the shell and electrically connected to the heating rod and heating components, the gas supply pipe and the gas supply components, to provide the high temperature and catalyst required for coal seam combustion, ensuring smooth ignition; through electrical connection with the temperature detection module and the gas component detection module, the temperature of the heating rod can be adjusted in time to avoid damage to the heating rod due to excessive temperature, and the gas intake of the gas intake pipe can be adjusted according to the gas content detected by the gas component detection module; electrically connected to the towing device, it can move underground, and when the battery pack power is low, it can return in time for charging to ensure the normal operation of the device, realizing the automatic ignition, movement and charging of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Before ignition, geological exploration is conducted to determine the depth, thickness, permeability, and fracture distribution of the coal seam, and a suitable ignition area is selected. Directional drilling technology is used to construct gas injection wells and production wells, and connecting channels (such as U-shaped horizontal wells or multi-branch wells) are opened in the coal seam to provide a physical path for ignition.

[0019] An ignition device is installed at the lower end of a flexible coiled tube, which extends into the coal seam channel via a production tubing or casing. The flexible coiled tube is bendable and can adapt to the complex geological structure inside the coal seam.

[0020] The ignition device is driven into the coal seam connecting channel by setting up a ground drive device. The extension and movement of the flexible coil tube are controlled by hydraulic or mechanical means to realize the horizontal or vertical movement of the ignition device in the coal seam (this is existing technology and will not be described in detail here).

[0021] like Figure 1 As shown, a wireless intelligent ignition device for underground coal ignition includes a housing (not shown), a heating rod 1 disposed inside the housing, and a gas supply pipe 2 disposed at the center of the heating rod 1. The heating rod 1 provides a heat source, and the gas supply pipe 2 provides a combustion aid (oxygen / catalyst) to ignite the coal.

[0022] The front end of the heating rod 1 extends out of the housing and is equipped with a temperature detection module 3. The front end of the gas supply pipe 2 extends out of the heating rod 1 and is equipped with a gas component detection module 4. A heating assembly is connected to the heating rod 1. The heating assembly includes a resistance wire 10 wound around the heating rod 1 and two electrical leads 11 connected to the heating rod 1. The free ends of the electrical leads 11 are respectively connected to the positive and negative terminals of the battery pack 5. By connecting the resistance wire 10 on the heating rod 1 to the positive and negative terminals of the battery pack 5 through the electrical leads 11, power is supplied to the heating rod 1, ensuring the normal operation of the heating rod 1 and making the connection more convenient.

[0023] Gas supply pipe 2 is connected to a gas supply assembly (not shown in the figure). The gas supply assembly includes multiple gas storage tanks housed within the casing and metering pumps mounted on the gas storage tanks (this is existing technology and will not be described further). The metering pumps are all electrically connected to the data analysis and control module 9 to control the gas supply rate to the gas storage tanks. A temperature detection module 3 is installed at the front end of the heating rod 1 to ensure that the temperature of the heating rod 1 does not exceed its withstand temperature, thus preventing damage. A gas composition detection module 4 detects the gas composition produced by the burning coal, thereby adjusting the addition of oxygen or catalyst as needed, and controlling the rate of addition of oxygen or catalyst to ensure the combustion of the coal.

[0024] The housing contains a battery pack 5 that powers the heating element, and the battery pack 5 is surrounded by heat-insulating material. The battery pack 5 provides energy to the heating rod 1, ensuring its continuous operation. Since coal combustion generates high temperatures, which raises the ambient temperature, the battery pack 5 is surrounded by heat-insulating material to prevent overheating and damage to the components inside.

[0025] The rear end of the casing is equipped with a dragging device 6 for movement within the coal seam. The battery pack 5 is connected to a charging docking module for charging the wireless charging pack 7. The charging docking module uses a docking clip (not shown in the figure). The wireless charging pack 7 is connected to the battery pack 5 using the docking clip. When the battery pack 5's power is low, the dragging device 6 pulls the casing backward until it aligns with the wireless charging pack 7, where it connects directly via the docking clip, making it more convenient and faster. The dragging device 6 is connected to the wireless charging pack 7 by a steel wire rope, and an electric roller is installed at the bottom of the casing. The casing is dragged back to the wireless charging pack by the traction of the steel wire rope for charging.

[0026] The battery pack 5 is also equipped with a power display sensor module 8 and a data analysis and control module 9. The data analysis and control module 9 is electrically connected to the power display sensor module, temperature detection module 3, gas composition detection module 4, gas supply component, heating component, and dragging device 6, respectively, to realize the automatic ignition, movement, and charging of the device. The data analysis and control module 9 controls the power supply of the battery pack 5 to ignite the coal, and the gas composition detection module 4 detects the gas composition produced by combustion and transmits the signal to the data analysis and control module 9, which then controls the composition of the gas supplied by the gas supply component connected to the gas supply pipe 2 to ensure complete combustion of the coal. The power display sensor module 8 monitors the power level in the battery pack 5. When the power is insufficient, the dragging device 6 brings the casing back to the wireless charging pack 7 for charging, realizing the automatic ignition, movement, and charging process of the device.

[0027] A data analysis and control module 9 is installed inside the casing, which is electrically connected to the heating rod 1 and heating components, the gas supply pipe 2 and the gas supply components. It provides the high temperature and catalyst required for the combustion of coal seams to ensure smooth ignition. Through electrical connection with the temperature detection module 3 and the gas component detection module 4, the temperature of the heating rod 1 can be adjusted in time to avoid damage to the heating rod 1 due to excessive temperature. It can also adjust the gas intake of the gas inlet pipe according to the gas content detected by the gas component detection module 4. Electrically connected to the towing device 6, it can move underground. When the battery pack 5 is low on power, it can return in time for charging to ensure the normal operation of the device and realize the automatic ignition, movement and charging of the device.

[0028] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wireless intelligent ignition device for underground coal ignition, characterized in that: The device includes a housing, a heating rod (1) disposed inside the housing, and a gas supply pipe (2) disposed at the center of the heating rod (1). The front end of the heating rod (1) extends out of the housing and is equipped with a temperature detection module (3). The front end of the gas supply pipe (2) extends out of the heating rod (1) and is equipped with a gas component detection module (4). A heating component is connected to the heating rod (1). A gas supply component is connected to the gas supply pipe (2). A battery pack (5) is disposed inside the housing to power the heating component. A dragging device (6) for moving within the coal seam is disposed at the rear end of the housing. A charging docking module for connecting and charging with a wireless charging pack (7) is connected to the battery pack (5). A power display sensor module (8) and a data analysis and control module (9) are disposed on the battery pack (5). The data analysis and control module (9) is electrically connected to the power display sensor module, the temperature detection module (3), the gas component detection module (4), the gas supply component, the heating component, and the dragging device (6) respectively, for realizing automatic ignition, movement, and charging of the device.

2. The wireless intelligent ignition device for underground coal ignition according to claim 1, characterized in that: The heating assembly includes a resistance wire (10) wound around a heating rod (1) and two electrical leads (11) connected to the heating rod (1). The free ends of the electrical leads (11) are respectively connected to the positive and negative power supply terminals of the battery pack (5).

3. The wireless intelligent ignition device for underground coal ignition according to claim 2, characterized in that: The battery pack (5) is surrounded by heat-insulating material.

4. The wireless intelligent ignition device for underground coal ignition according to claim 1, characterized in that: The charging docking module uses a docking clip.

5. A wireless intelligent ignition device for underground coal ignition according to claim 1, characterized in that: The gas supply assembly includes multiple gas storage tanks installed inside the housing and metering pumps installed on the gas storage tanks. The metering pumps are all electrically connected to the data analysis and control module (9) to control the gas supply speed of the gas storage tanks.

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