High-temperature heater for use in mine pipelines

Abstract

The high-temperature heater used in a mine pipeline of the present invention comprises a shell, an air inlet pipe, a heating rod, a wiring chamber sensor, a partition, a ventilation hole, a spiral spoiler, an air outlet pipe, a heating chamber sensor, a heating chamber, a wiring chamber, and a controller; the air inlet pipe is mounted at one end of the shell, and the air outlet pipe is mounted at the other end of the shell; a partition is mounted in the shell to divide the interior of the shell into a wiring chamber and a heating chamber, the spiral spoiler is mounted in the heating chamber, and the wiring chamber sensor is mounted in the wiring chamber; the heating portion of the heating rod is located near the spiral spoiler; the probe of the heating chamber sensor is in the heating chamber; a plurality of ventilation holes are provided on the air inlet pipe, the ventilation holes being located between the partition and the spiral spoiler; the controller is connected to the wiring chamber sensor, the heating chamber sensor, and the heating rod. The present invention has high thermal conductivity, adopts conduction and convection heating, and heats evenly and accurately; adopts an automatic control system, and can accurately control the temperature; and is suitable for use in special environments under external high-temperature conditions.

Description

Technical Field

[0001] The invention relates to a high-temperature heater used in a mine pipeline and belongs to the field of coalbed methane development. Background Art

[0002] Coal seams contain large amounts of methane gas, a major cause of major accidents during coal mining. Methane gas is a clean energy source that, when fully burned, produces only carbon dioxide and water, without nitrogen or sulfur oxides. Extracting the methane gas before coal seam development can reduce the likelihood of major accidents while also maximizing the economic benefits of developing the associated methane.

[0003] Coal seam heating is an important means to achieve the development of coal seam associated methane. The heated coal seam will release methane, and the released methane expands in volume at high temperature, which improves the extraction effect. At present, there is no high-temperature, small heater developed for coal seam associated methane. Conventional small heaters are generally used for heating in mine tunnels such as coal mines. Their function is to prevent freezing. The heating temperature is relatively low and cannot meet the required heating requirements of more than 800°C. Large heaters are limited by the size of the mine and cannot be smoothly placed in the coal mine. They are not suitable for the early development of coal seam associated methane. Therefore, the purpose of the present invention is to provide a high-temperature heater for use in mine pipelines that can achieve a heating temperature of 800°C. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-temperature heater used in mine pipelines.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a high-temperature heater used in mine pipelines, comprising a shell, an air inlet pipe, a heating rod, a wiring cavity sensor, a partition, ventilation holes, a spiral spoiler, an air outlet pipe, a heating cavity sensor, a heating cavity, a wiring cavity, and a controller. The air inlet pipe is installed at one end of the shell, and its length passes through the entire spiral spoiler, and the air outlet pipe is installed at the other end of the shell; a partition is installed in the shell to divide the interior of the shell into a wiring cavity and a heating cavity, the spiral spoiler is installed in the heating cavity, and the wiring cavity sensor is installed in the wiring cavity; the heating rod passes through the wiring cavity and half passes through the heating cavity, but its heating part is located near the spiral spoiler; the heating cavity sensor passes through the wiring cavity and half passes through the heating cavity, but its probe is inside the heating cavity and is used to detect the temperature of the heating cavity; a plurality of ventilation holes are provided on the air inlet pipe, and the ventilation holes are located between the partition and the spiral spoiler; the controller is connected to the wiring cavity sensor, the heating cavity sensor, and the heating rod, and is used to detect and control the temperature and heating power.

[0006] Furthermore, the spiral spoiler surrounds the air intake pipe, thereby increasing the heating efficiency by extending the movement distance and movement time of the inflowing air in the heating chamber.

[0007] Furthermore, the probe of the heating chamber sensor is located at the end of the spiral spoiler and is used to monitor the air temperature after the heating is completed.

[0008] Furthermore, the end of the heating rod is flush with the end of the spiral spoiler so as to fully heat the inflowing air.

[0009] Furthermore, the controller processes the monitored temperature value and dynamically adjusts the heating power of the heating rod so that the temperature of the heated air is stabilized within a desired range.

[0010] The beneficial effects of the present invention are as follows: (1) high thermal conductivity, heating by conduction and convection, uniform and accurate heating, and high energy utilization rate; (2) automatic control system, precise temperature control; (3) application in special environments with high external temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the AA section of a high-temperature heater used in mine pipelines;

[0012] Figure 2 This is the BB section of a high-temperature heater used in mine pipelines;

[0013] As shown in the figure: 1- shell, 2- air inlet pipe, 3- heating rod, 4- wiring chamber sensor, 5- partition, 6- ventilation hole, 7- spiral spoiler, 8- exhaust pipe, 9- heating chamber sensor, 10- heating chamber, 11- wiring chamber, 12- controller. DETAILED DESCRIPTION

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0016] like Figure 1 、 Figure 2As shown, the high-temperature heater used in the mine pipeline of the present invention includes an outer shell 1, an air inlet pipe 2, a heating rod 3, a wiring chamber sensor 4, a partition 5, an air exchange hole 6, a spiral spoiler 7, an air outlet pipe 8, a heating chamber sensor 9, a heating chamber 10, a wiring chamber 11, and a controller 12. The air inlet pipe 2 is installed at one end of the outer shell 1, and its length direction passes through the entire spiral spoiler 7, and the air outlet pipe 8 is installed at the other end of the outer shell 1; a partition 5 is installed in the outer shell 1, which is used to divide the interior of the outer shell 1 into a wiring chamber 11 and a heating chamber 10, the spiral spoiler 7 is installed in the heating chamber 10, and the wiring chamber sensor 4 is installed in the wiring chamber 11; the heating rod 3 passes through the wiring chamber 11 and half passes through the heating chamber 10, but its heating part is located near the spiral spoiler 7; the heating chamber sensor 9 passes through the wiring chamber 11 and half passes through the heating chamber 10, but its probe is in the heating chamber 10, which is used to detect the temperature of the heating chamber 10; there are several ventilation holes 6 on the air inlet pipe 2, and the ventilation holes 6 are located between the partition 5 and the spiral spoiler 7; the controller 12 is connected to the wiring chamber sensor 4, the heating chamber sensor 9, and the heating rod 3, and is used to monitor and control the temperature and heating power.

[0017] The shape of existing air heaters is mostly square, while the overall shape of the high-temperature heater used in the mine pipeline proposed by the present invention is cylindrical, which can better fit the inner diameter shape of the mine drilled for developing coalbed methane gas, ensuring that the high-temperature heater used in the mine pipeline can be smoothly lowered into the mine. On the basis of the overall cylindrical shape, the heating rod 3, the spiral spoiler 7, the wiring cavity sensor 4, and the heating cavity sensor 9 are installed along the axis of the high-temperature heater used in the mine pipeline. Under the condition that the overall size of the heater is limited (the inner diameter of the mine is usually less than 20 cm, and the outer diameter of the heater must be smaller than the inner diameter of the mine), the internal space of the heater is fully utilized, thereby improving the heating efficiency. Furthermore, the spiral spoiler 7 is wrapped around the air inlet pipe 2, and the heating efficiency is improved by extending the movement distance and movement time of the inflowing air in the heating cavity 10. On the one hand, existing heaters typically feature S-shaped or dual-duct "W-shaped" spoilers and spoiler holes. These types of spoilers struggle to achieve the optimal balance between heating efficiency and air pressure loss. The spiral spoiler proposed in this patent prevents the incoming air flow from undergoing a sharp deflection, ensuring that air pressure is maintained while achieving higher heating efficiency. On the other hand, mines used to exploit coal-seam associated methane are relatively small, making the larger installation area of S-shaped or dual-duct "W-shaped" spoilers unsuitable for underground use.

[0018] The end of the intake pipe 2 is flush with the ends of the spiral spoiler 7 and the heating rod 3. The purpose is to use the heating rod to preliminarily heat the air in the intake pipe that has not yet flowed out through the ventilation hole 6, thereby improving the heating efficiency. The hot air flowing out through the ventilation hole 6 will be heated again, making the heating efficiency higher.

[0019] Furthermore, the probe of the heating chamber sensor 9, located at the end of the spiral spoiler 7, is used to monitor the air temperature after heating. The development of methane requires certain temperature conditions. By detecting the heated air temperature through the heating chamber sensor 9 and feeding the data back to the controller 12, the controller 12 adjusts the heating power based on the received temperature data to ensure that the output air temperature is within the set range.

[0020] Furthermore, the end of the heating rod 3 is flush with the end of the spiral spoiler 7 so as to fully heat the inflowing air.

[0021] Furthermore, the controller 12 processes the monitored temperature value and dynamically adjusts the heating power of the heating rod 3 so that the temperature of the heated air is stabilized within a desired range.

[0022] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. High temperature heater used in mine pipelines, characterized by: The invention comprises a housing (1), an air inlet pipe (2), a heating rod (3), a wiring chamber sensor (4), a partition (5), an air exchange hole (6), a spiral spoiler (7), an air outlet pipe (8), a heating chamber sensor (9), a heating chamber (10), a wiring chamber (11), and a controller (12); the air inlet pipe (2) is installed at one end of the housing (1), and its length direction passes through the entire spiral spoiler (7); the air outlet pipe (8) is installed at the other end of the housing (1); a partition (5) is installed in the housing (1) for dividing the interior of the housing (1) into a wiring chamber (11) and a heating chamber (10). The spiral spoiler (7) is installed in the heating chamber (10), and the wiring chamber sensor (4) is installed in the wiring chamber (11); the heating rod (3) passes through the wiring chamber (11) and half passes through the heating chamber (10); the heating chamber sensor (9) passes through the wiring chamber (11) and half passes through the heating chamber (10), and its probe is inside the heating chamber (10); there are a plurality of ventilation holes (6) on the air intake pipe (2), and the ventilation holes (6) are located between the partition (5) and the spiral spoiler (7); the controller (12) is connected to the wiring chamber sensor (4), the heating chamber sensor (9), and the heating rod (3).

2. The high-temperature heater used in mine pipelines according to claim 1, characterized in that: The spiral spoiler (7) surrounds the air inlet pipe (2) and improves the heating efficiency by extending the movement distance and movement time of the inflowing air in the heating chamber (10).

3. The high-temperature heater used in mine pipelines according to claim 1, characterized in that: The probe of the heating chamber sensor (9) is located at the end of the spiral spoiler (7).

4. The high-temperature heater used in mine pipelines according to claim 1, characterized in that: The end of the heating rod (3) is flush with the end of the spiral spoiler (7).

5. The high temperature heater used in mine pipelines according to claim 1, characterized in that: The controller (12) processes the monitored temperature value and dynamically adjusts the heating power of the heating rod (3).

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