Inert gas charging device for preventing spontaneous combustion of coal yard

Abstract

The utility model discloses an inert gas charging device for preventing spontaneous combustion of a coal yard, which belongs to the technical field of coal yards and comprises a mounting rack, a gas cylinder fixing component is arranged on the surface of the mounting rack, a carbon dioxide gas cylinder is arranged in the gas cylinder fixing component, and a gas cylinder connecting valve is arranged at the gas outlet end of the carbon dioxide gas cylinder. A seamless steel pipe is arranged at one end of the gas cylinder connecting valve, a pipeline main valve is arranged at one end of the seamless steel pipe, a plurality of pipeline branch valves are arranged at one end of the pipeline main valve, gas outlet branch pipes are arranged at one ends of the pipeline branch valves, and gas outlet anti-blocking assemblies are arranged at one ends of the gas outlet branch pipes. By arranging the air outlet anti-blocking assembly, coal slime is prevented from blocking the exhaust pipe during air inflation, the stability of inert gas exhaust is guaranteed, the inert gas is heavier than air and can be deposited in a coal bed for a long time, the effect of reducing air oxidation in a coal pile is achieved, and then coal oxidation exothermic reaction is reduced; the purpose of slowing down and preventing spontaneous combustion of the coal yard is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal yards, and particularly relates to an inert gas inflation device for preventing spontaneous combustion of coal yards. Background Art

[0002] At present, thermal power plants and steel mills all use coal as a power raw material. Coal is stored in coal yards. Due to the influence of coal's volatile matter, sulfur, moisture and other characteristics, it is easy for the coal pile to generate self-heat after being stored for too long, and gradually develop into spontaneous combustion. At present, the main methods to prevent spontaneous combustion in coal yards are mainly layered compaction, turning the pile or watering, but there are still the following shortcomings:

[0003] 1. When the coal pile is too high, it cannot be compacted in layers or there is a great safety risk. At the same time, there are too many gaps in the coal pile during the natural stacking process, and there is a lot of air in the gaps. The oxygen in the air reacts with the coal pile to produce an oxidation reaction inside. The heat generated cannot be dissipated in time, causing the temperature of the coal pile to gradually rise until it spontaneously combusts.

[0004] 2. High-level coal piles make it difficult for coal pushers and loaders to operate. Some coal yards are limited by space and lack space to turn the coal piles, making it impossible to turn the coal piles to release heat. This makes it extremely difficult to deal with spontaneous combustion of the coal piles.

[0005] 3. Flushing with water can easily lead to coal pile collapse. At the same time, there is a risk of coal blockage during the loading process of wet coal. Flushing with water can only solve the problem of short-term temperature increase. In the long run, flushing with water will further promote the reaction of chemical substances inside the coal pile and the diffusion of heat, leading to a larger range of coal pile spontaneous combustion problems. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides an inert gas inflation device for preventing spontaneous combustion in coal yards, which has the characteristics of good inflation effect and pipeline anti-blocking.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inert gas inflation device for preventing spontaneous combustion in a coal yard, comprising a mounting frame, a gas cylinder fixing assembly being provided on the surface of the mounting frame, a carbon dioxide gas cylinder being provided inside the gas cylinder fixing assembly, a gas cylinder connecting valve being provided at the gas outlet end of the carbon dioxide gas cylinder, a seamless steel pipe being provided at one end of the gas cylinder connecting valve, a pipeline main valve being provided at one end of the seamless steel pipe, a plurality of pipeline branch valves being provided at one end of the pipeline branch valve, a gas outlet branch pipe being provided at one end of the gas outlet branch pipe, and a gas outlet anti-blocking assembly being provided at one end of the gas outlet branch pipe.

[0008] Preferably, the gas cylinder fixing assembly includes a positioning bolt, a movable snap ring, a support rod, a supporting device, a fixed snap ring and a fixing bolt, wherein a plurality of fixed snap rings are provided on the surface of the mounting frame, a fixing bolt is provided inside the fixed snap ring, a movable snap ring is provided on one side of the fixed snap ring, a positioning bolt is provided inside the movable snap ring, a support rod is provided at the bottom ends of the movable snap ring and the fixed snap ring, and a supporting device is provided at the bottom end of the support rod.

[0009] Preferably, the support device includes a positioning spring, a pull rod, a positioning plug and a support plate, wherein a support plate is provided at the bottom end of the support rod, a pull rod is provided inside the support plate, a positioning spring is provided on the surface of the pull rod, and a positioning plug is provided at one end of the pull rod.

[0010] Preferably, a socket is provided inside the bottom end of the support rod corresponding to the positioning plug block, and a mounting groove is provided inside the support plate corresponding to the support rod.

[0011] Preferably, the air outlet anti-blocking assembly includes a movable rod, a limit spring, a fixed block, a dust cover, a guide block, an exhaust pipe and an underground pipe, wherein an underground pipe is provided at one end of the air outlet branch pipe, a plurality of exhaust pipes are provided on the surface of the buried pipe, guide blocks are symmetrically provided on the surface of the exhaust pipe, a movable rod is provided inside the guide block, a limit spring is sleeved on the surface of the movable rod, a fixed block is provided at one end of the movable rod, and a dust cover is provided on one side of the fixed block.

[0012] Preferably, the buried pipelines are staggeredly arranged underground in the coal yard, and the dust shield is set in a conical shape.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model provides a gas cylinder fixing assembly, which can conveniently and stably support and install the gas cylinder, improve the stability of the inflation work, ensure the effect of preventing spontaneous combustion, reduce the probability of gas leakage at the valve, and increase the service life of the equipment.

[0015] 2. The utility model sets an air outlet anti-blocking component to prevent coal slime from clogging the exhaust pipe during inflation, thereby ensuring the stability of inert gas discharge. In addition, the inert gas is heavier than air and can be deposited in the coal seam for a long time, thereby reducing the air oxidation in the coal pile, thereby reducing the exothermic reaction of coal oxidation, and achieving the purpose of slowing down and preventing spontaneous combustion of the coal yard, effectively preventing and delaying the spontaneous combustion of the coal yard, reducing heat loss in the coal yard, reducing the release of toxic and harmful gases, and reducing the probability of environmental incidents. At the same time, it reduces the workload of coal yard operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the gas cylinder fixing assembly of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of the support device of the present utility model;

[0019] Figure 4 This is a schematic structural diagram of the air outlet anti-blocking component of the utility model.

[0020] In the figure: 1. Gas cylinder fixing assembly; 11. Positioning bolt; 12. Movable snap ring; 13. Support rod; 14. Support device; 141. Positioning spring; 142. Pull rod; 143. Positioning plug; 144. Support plate; 15. Fixing snap ring; 16. Fixing bolt; 2. Mounting frame; 3. Carbon dioxide gas cylinder; 4. Gas cylinder connecting valve; 5. Seamless steel pipe; 6. Pipeline main valve; 7. Pipeline branch valve; 8. Gas outlet branch pipe; 9. Gas outlet anti-blocking assembly; 91. Movable rod; 92. Limit spring; 93. Fixing block; 94. Dust cover; 95. Guide block; 96. Exhaust pipe; 97. Buried pipeline. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-4 The utility model provides the following technical solutions: an inert gas inflation device for preventing spontaneous combustion in a coal yard, comprising a mounting frame 2, a gas cylinder fixing assembly 1 being provided on the surface of the mounting frame 2, a carbon dioxide gas cylinder 3 being provided inside the gas cylinder fixing assembly 1, a gas cylinder connecting valve 4 being provided at the gas outlet end of the carbon dioxide gas cylinder 3, a seamless steel pipe 5 being provided at one end of the gas cylinder connecting valve 4, a pipeline main valve 6 being provided at one end of the seamless steel pipe 5, a plurality of pipeline branch valves 7 being provided at one end of the pipeline main valve 6, a gas outlet branch pipe 8 being provided at one end of the pipeline branch valve 7, a gas outlet anti-blocking assembly 9 being provided at one end of the gas outlet branch pipe 8.

[0024] Specifically, the gas cylinder fixing assembly 1 includes a positioning bolt 11, a movable snap ring 12, a support rod 13, a supporting device 14, a fixed snap ring 15 and a fixing bolt 16, wherein a plurality of fixed snap rings 15 are provided on the surface of the mounting frame 2, a fixing bolt 16 is provided inside the fixed snap ring 15, a movable snap ring 12 is provided on one side of the fixed snap ring 15, a positioning bolt 11 is provided inside the movable snap ring 12, a support rod 13 is provided at the bottom ends of the movable snap ring 12 and the fixed snap ring 15, and a supporting device 14 is provided at the bottom end of the support rod 13.

[0025] By adopting the above technical solution, the carbon dioxide cylinder 3 needs to be installed before inflation. The carbon dioxide cylinder 3 is placed against one side of the mounting frame 2 and abuts against the surface of the fixed clamping ring 15. Then, the positioning bolt 11 is loosened and the movable clamping ring 12 is slid along the surface of the mounting frame 2 so that it abuts against one side of the carbon dioxide cylinder 3. After confirming that the carbon dioxide cylinder 3 is stably installed, the positioning bolt 11 is tightened to fix the movable clamping ring 12 to ensure the stability and convenience of the installation of the carbon dioxide cylinder 3.

[0026] Specifically, the support device 14 includes a positioning spring 141, a pull rod 142, a positioning plug 143 and a support plate 144, wherein a support plate 144 is provided at the bottom end of the support rod 13, a pull rod 142 is provided inside the support plate 144, a positioning spring 141 is provided on the surface of the pull rod 142, and a positioning plug 143 is provided at one end of the pull rod 142.

[0027] By adopting the above technical solution, when the support plate 144 is installed at the bottom end of the support rod 13, the pull rod 142 is pulled to drive the positioning block 143 to move, and at the same time the positioning spring 141 is compressed, and then the internal mounting groove of the support plate 144 is aligned with the support rod 13, and when the positioning block 143 corresponds to the internal socket of the support rod 13, the pull rod 142 is released to reset the positioning spring 141 and push the positioning block 143 into the inside of the support rod 13, thereby ensuring the stability of the support of the carbon dioxide cylinder 3, ensuring the quality of the connection between the cylinder connecting valve 4 and the carbon dioxide cylinder 3, and preventing leakage.

[0028] Specifically, an insertion hole is provided inside the bottom end of the support rod 13 corresponding to the positioning plug block 143 , and an installation groove is provided inside the support plate 144 corresponding to the support rod 13 .

[0029] By adopting the above technical solution, the accuracy and stability of the installation of the support plate 144 are guaranteed, and the supporting strength is improved.

[0030] When using this embodiment: before inflation, the carbon dioxide cylinder 3 needs to be installed. The carbon dioxide cylinder 3 is placed against one side of the mounting frame 2 and abutted against the surface of the fixed clamping ring 15. Then, the positioning bolt 11 is loosened and the movable clamping ring 12 is slid along the surface of the mounting frame 2 so that it abuts against one side of the carbon dioxide cylinder 3. After confirming that the carbon dioxide cylinder 3 is stably installed, the positioning bolt 11 is tightened to fix the movable clamping ring 12 to ensure the stability and convenience of the installation of the carbon dioxide cylinder 3.

[0031] A support plate 144 can be installed at the bottom end of the support rod 13, and the pull rod 142 can be pulled to drive the positioning block 143 to move. At the same time, the positioning spring 141 is compressed, and then the internal mounting groove of the support plate 144 is aligned with the support rod 13. When the positioning block 143 corresponds to the internal socket of the support rod 13, the pull rod 142 is released to reset the positioning spring 141 and push the positioning block 143 into the inside of the support rod 13, ensuring the stability of the support of the carbon dioxide cylinder 3, ensuring the quality of the connection between the cylinder connecting valve 4 and the carbon dioxide cylinder 3, and preventing leakage.

[0032] Example 2

[0033] The difference between this embodiment and embodiment 1 is that: specifically, the air outlet anti-blocking component 9 includes a movable rod 91, a limit spring 92, a fixed block 93, a dust cover 94, a guide block 95, an exhaust pipe 96 and a buried pipe 97, wherein an underground pipe 97 is provided at one end of the air outlet branch pipe 8, a plurality of exhaust pipes 96 are provided on the surface of the buried pipe 97, guide blocks 95 are symmetrically provided on the surface of the exhaust pipe 96, a movable rod 91 is provided inside the guide block 95, a limit spring 92 is sleeved on the surface of the movable rod 91, a fixed block 93 is provided at one end of the movable rod 91, and a dust cover 94 is provided on one side of the fixed block 93.

[0034] By adopting the above technical solution, when the gas cylinder connecting valve 4 and the pipeline main valve 6 are opened for inflation, the pipeline branch valves 7 at different positions can be opened as needed to fill carbon dioxide into the gas outlet branch pipe 8 for discharge. The gas enters the buried pipeline 97 at one end of the gas outlet branch pipe 8 and is discharged from the exhaust pipe 96. At this time, the gas pushes the dust cover 94 to move, and the fixed block 93 inside the dust cover 94 pulls the movable rod 91 to move and causes the limit spring 92 to compress and vibrate, so as to clear the coal slime covering the surface of the dust cover 94, prevent pipeline blockage, improve the stability of the inflation work, ensure the working quality of the equipment, and improve the effect of preventing spontaneous combustion.

[0035] Specifically, the underground pipelines 97 are staggeredly arranged underground in the coal yard, and the dust shield 94 is set to be conical.

[0036] By adopting the above technical solution, the coverage area of ​​the buried pipeline 97 is increased, the mud-blocking effect is ensured, and the probability of blockage is reduced.

[0037] When this embodiment is in use: when the gas cylinder connecting valve 4 and the pipeline main valve 6 are opened to perform inflation, the pipeline sub-valves 7 at different positions can be opened as needed to fill carbon dioxide into the gas outlet branch pipe 8 for discharge, and the gas enters the buried pipeline 97 at one end of the gas outlet branch pipe 8 and is discharged from the exhaust pipe 96. At this time, the gas pushes the dust cover 94 to move, and the fixed block 93 inside the dust cover 94 pulls the movable rod 91 to move and causes the limit spring 92 to compress and vibrate, so as to clear the coal slime covering the surface of the dust cover 94, prevent pipeline blockage, improve the stability of inflation, ensure the working quality of the equipment, and improve the effect of preventing spontaneous combustion.

[0038] The working principle and use process of the utility model: When the utility model is in use, in the work of preventing the spontaneous combustion of coal piles in the coal yard, the air in the coal can be squeezed out by filling inert gas through the pipeline, so as to achieve the purpose of slowing down and preventing the spontaneous combustion of the coal yard. Before inflation, the carbon dioxide cylinder 3 needs to be installed, and the carbon dioxide cylinder 3 is leaned against one side of the mounting frame 2 and abutted against the surface of the fixed clamping ring 15. Then, the positioning bolt 11 is loosened and the movable clamping ring 12 is slid along the surface of the mounting frame 2 to abut against one side of the carbon dioxide cylinder 3. After confirming that the carbon dioxide cylinder 3 is stably installed, the positioning bolt 11 is tightened to fix the movable clamping ring 12 to ensure the stability and convenience of the installation of the carbon dioxide cylinder 3.

[0039] And a support plate 144 can be installed at the bottom end of the support rod 13, and the pull rod 142 can be pulled to drive the positioning plug 143 to move, while the positioning spring 141 is compressed, and then the internal mounting groove of the support plate 144 is aligned with the support rod 13, and when the positioning plug 143 is aligned with the internal socket of the support rod 13, the pull rod 142 is released to reset the positioning spring 141 and push the positioning plug 143 into the inside of the support rod 13, thereby ensuring the stability of the support of the carbon dioxide cylinder 3, ensuring the quality of the connection between the cylinder connecting valve 4 and the carbon dioxide cylinder 3, and preventing leakage;

[0040] When the gas cylinder connecting valve 4 and the pipeline main valve 6 are opened for inflation, the pipeline sub-valves 7 at different positions can be opened as needed to fill carbon dioxide into the gas outlet branch pipe 8 for discharge. The gas enters the buried pipeline 97 at one end of the gas outlet branch pipe 8 and is discharged from the exhaust pipe 96. At this time, the gas pushes the dust cover 94 to move, and the fixed block 93 inside the dust cover 94 pulls the movable rod 91 to move and causes the limit spring 92 to compress and vibrate, so as to clear the coal slime covering the surface of the dust cover 94, prevent pipeline blockage, improve the stability of the inflation work, ensure the working quality of the equipment, and improve the effect of preventing spontaneous combustion.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inert gas inflation device for preventing spontaneous combustion in a coal yard, comprising a mounting frame (2), characterized in that: A gas cylinder fixing assembly (1) is provided on the surface of the mounting frame (2), a carbon dioxide gas cylinder (3) is provided inside the gas cylinder fixing assembly (1), a gas cylinder connecting valve (4) is provided at the gas outlet end of the carbon dioxide gas cylinder (3), a seamless steel pipe (5) is provided at one end of the gas cylinder connecting valve (4), a pipeline main valve (6) is provided at one end of the seamless steel pipe (5), a plurality of pipeline branch valves (7) are provided at one end of the pipeline main valve (6), a gas outlet branch pipe (8) is provided at one end of the pipeline branch valve (7), and a gas outlet anti-blocking assembly (9) is provided at one end of the gas outlet branch pipe (8).

2. The inert gas inflation device for preventing spontaneous combustion in a coal yard according to claim 1 is characterized in that: The gas cylinder fixing assembly (1) comprises a positioning bolt (11), a movable snap ring (12), a support rod (13), a supporting device (14), a fixed snap ring (15) and a fixing bolt (16), wherein a plurality of fixing snap rings (15) are provided on the surface of the mounting frame (2), a fixing bolt (16) is provided inside the fixed snap ring (15), a movable snap ring (12) is provided on one side of the fixed snap ring (15), a positioning bolt (11) is provided inside the movable snap ring (12), a support rod (13) is provided at the bottom ends of the movable snap ring (12) and the fixed snap ring (15), and a supporting device (14) is provided at the bottom end of the support rod (13).

3. The inert gas inflation device for preventing spontaneous combustion in a coal yard according to claim 2 is characterized in that: The support device (14) includes a positioning spring (141), a pull rod (142), a positioning plug (143) and a support plate (144), wherein the bottom end of the support rod (13) is provided with a support plate (144), the interior of the support plate (144) is provided with a pull rod (142), the surface of the pull rod (142) is provided with a positioning spring (141), and one end of the pull rod (142) is provided with a positioning plug (143).

4. The inert gas inflation device for preventing spontaneous combustion in a coal yard according to claim 3 is characterized in that: The bottom end of the support rod (13) is provided with an insert hole corresponding to the positioning insert block (143), and the support plate (144) is provided with a mounting groove corresponding to the support rod (13).

5. The inert gas inflation device for preventing spontaneous combustion in a coal yard according to claim 1 is characterized in that: The air outlet anti-blocking assembly (9) comprises a movable rod (91), a limit spring (92), a fixed block (93), a dust cover (94), a guide block (95), an exhaust pipe (96) and an underground pipe (97), wherein one end of the air outlet branch pipe (8) is provided with an underground pipe (97), a plurality of exhaust pipes (96) are provided on the surface of the underground pipe (97), a guide block (95) is symmetrically provided on the surface of the exhaust pipe (96), a movable rod (91) is provided inside the guide block (95), a limit spring (92) is sleeved on the surface of the movable rod (91), a fixed block (93) is provided at one end of the movable rod (91), and a dust cover (94) is provided on one side of the fixed block (93).

6. The inert gas inflation device for preventing spontaneous combustion in a coal yard according to claim 5, characterized in that: The buried pipes (97) are staggeredly arranged underground in the coal field, and the dust shield (94) is arranged in a conical shape.

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