High-pressure gas buffering mechanism for coal seam drilling

Abstract

The utility model relates to a gas buffer device, and particularly discloses a high-pressure gas buffer mechanism for coal seam drilling, which comprises a box body, an opening arranged on one side of the box body, an air bag arranged in the box body, an air inlet pipe connected with the air bag, and an exhaust pipe connected with the air bag, and the air inlet pipe and the exhaust pipe penetrate through the box body. The high-pressure gas buffering mechanism for coal seam drilling can effectively buffer suddenly generated high-pressure and high-flow gas.

Description

Technical Field

[0001] This utility model relates to the technical field of gas buffer devices, and more specifically, to a high-pressure gas buffer mechanism for coal seam drilling. Background Technology

[0002] Coal seam drilling refers to drilling holes at relevant locations in the coal seam to create gas extraction channels and extract the gas. However, during the drilling or extraction process, a blowout phenomenon may occur, in which high-pressure gas suddenly erupts from the borehole, carrying a large amount of coal dust. This not only pollutes the roadway but also has a certain impact on gas extraction.

[0003] Some of the gas produced by the high-pressure nozzle will leak out, while most will be discharged through a pre-set pipeline. However, the sudden increase in gas flow and pressure will exceed the capacity of the pipeline and container, thus having a certain negative impact on the pipeline or storage tank. Therefore, it is necessary to install a device on the gas emission pipeline to buffer high-pressure and high-flow gas. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure gas buffer mechanism for coal seam drilling, which can effectively buffer the sudden generation of high-pressure and high-flow-rate gas.

[0005] This utility model is achieved through the following technical solution: The high-pressure gas buffer mechanism for coal seam drilling of this utility model includes a box, an opening on one side of the box, an air bladder disposed inside the box, an air inlet pipe connected to the air bladder, and an exhaust pipe connected to the air bladder; both the air inlet pipe and the exhaust pipe pass through the box.

[0006] Furthermore, the box body has a door on its open side, and the door is hinged to the upper side of the open side of the box body via a hinge shaft.

[0007] Furthermore, a torsion spring is provided on the hinge shaft.

[0008] Furthermore, the air intake pipe and the exhaust pipe are respectively located on the side of the housing away from the housing door.

[0009] Furthermore, the airbag is made of an elastic material.

[0010] The technical solution of this utility model has at least the following advantages and beneficial effects: The high-pressure gas buffer mechanism for coal seam drilling of this utility model connects the air inlet pipe to the gas exhaust device during coal seam drilling. The gas passes through the air bag and is then discharged from the exhaust pipe. During the drilling process, when the flow rate of gas suddenly increases or the gas pressure suddenly increases, a large amount of gas will instantly enter the air bag, causing the air bag to expand rapidly. The expanded air bag is squeezed out from the opening. In this way, the air bag can temporarily contain excess gas and play a certain buffering role against the high-pressure gas in the pipeline. Moreover, the air bag is only partially squeezed out from the opening when it is rapidly inflated. Therefore, when there is no sudden increase in gas, the overall volume occupied by the device is smaller, making it easier to install and store. Attached Figure Description

[0011] Figure 1 A schematic diagram of the high-pressure gas buffer mechanism for coal seam drilling provided in this embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the unfolded structure of the box provided in an embodiment of the present utility model.

[0013] Icons: 1-Box body, 2-Opening, 3-Box door, 4-Hinge, 5-Airbag, 6-Intake pipe, 7-Exhaust pipe. Detailed Implementation

[0014] Example

[0015] The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 -Appendix Figure 2 As shown, the high-pressure gas buffer mechanism for coal seam drilling in this embodiment includes a housing 1, an opening 2 on one side of the housing 1, an airbag 5 disposed inside the housing 1, an inlet pipe 6 connected to the airbag 5, and an exhaust pipe 7 connected to the airbag 5; both the inlet pipe 6 and the exhaust pipe 7 pass through the housing 1. Specifically, in use, the inlet pipe 6 is connected to the gas exhaust device during coal seam drilling. Gas passes through the airbag 5 and is then discharged from the exhaust pipe 7. During drilling, when the flow rate of gas suddenly increases or the gas pressure suddenly increases, a large amount of gas will instantly enter the airbag 5, causing the airbag 5 to expand rapidly. The expanded portion of the airbag 5 is squeezed out from the opening 2 (as shown in the attached figure). Figure 2 As shown in the figure, the airbag 5 can temporarily contain excess gas, which plays a certain role in buffering the high-pressure gas in the pipeline. Furthermore, the airbag 5 will only be partially squeezed out from the opening 2 when it is rapidly inflated. Therefore, when there is no sudden increase in gas, the overall volume occupied by the device is smaller, making it easier to install and store.

[0016] In this embodiment, the box body 1 has a door 3 on the opening 2 side, and the door 3 is hinged to the upper side of the opening 2 side of the box body 1 via a hinge shaft. A torsion spring is provided on the hinge shaft. Specifically, under the action of the torsion spring, the door 3 can be kept closed, while the inflated airbag 5 can directly push the door 3 open. When the airbag 5 contracts, the door 3 can be closed under the action of the torsion spring.

[0017] In this embodiment, the air intake pipe 6 and the exhaust pipe 7 are respectively located on the side of the housing 1 away from the door 3. Specifically, the air intake pipe 6 and the exhaust pipe 7 are fixedly installed on the housing 1, so that the airbag 5 can be fixed through the air intake pipe 6 and the exhaust pipe 7.

[0018] In this embodiment, the airbag 5 is made of an elastic material. Specifically, this makes the airbag 5 more flexible and less prone to damage.

[0019] In summary, the high-pressure gas buffer mechanism for coal seam drilling in this embodiment connects the air inlet pipe 6 to the gas exhaust device during coal seam drilling. Gas passes through the air bag 5 and is then discharged from the exhaust pipe 7. During drilling, when the flow rate of gas suddenly increases or the gas pressure suddenly increases, a large amount of gas will instantly enter the air bag 5, causing the air bag 5 to expand rapidly. The expanded air bag 5 is partially squeezed out from the opening 2. In this way, the air bag 5 can temporarily contain excess gas and play a certain buffering role against the high-pressure gas in the pipeline. Furthermore, the air bag 5 is only partially squeezed out from the opening 2 during rapid inflation. Therefore, when there is no sudden increase in gas, the overall volume occupied by the device is smaller, making it easier to install and store.

[0020] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-pressure gas buffer mechanism for coal seam drilling, characterized in that: It includes a housing, an opening on one side of the housing, an airbag disposed inside the housing, an air inlet pipe connected to the airbag, and an exhaust pipe connected to the airbag; both the air inlet pipe and the exhaust pipe pass through the housing.

2. The high-pressure gas buffer mechanism for coal seam drilling according to claim 1, characterized in that: The box body has a door on the open side, and the door is hinged to the upper side of the open side of the box body via a hinge shaft.

3. The high-pressure gas buffer mechanism for coal seam drilling according to claim 2, characterized in that: A torsion spring is provided on the hinge shaft.

4. The high-pressure gas buffer mechanism for coal seam drilling according to claim 2, characterized in that: The air intake pipe and the exhaust pipe are respectively located on the side of the housing away from the housing door.

5. The high-pressure gas buffer mechanism for coal seam drilling according to claim 1, characterized in that: The airbag is made of an elastic material.

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