Drill hole gas extraction sound alarm and negative pressure display centralized control system

Abstract

The utility model relates to the technical field of extraction drilling construction, in particular to an extraction drilling gas sound alarm and negative pressure display centralized control system, and mainly solves the technical problem of hysteresis of negative pressure adjustment of an existing orifice blowout preventer. The system comprises a negative pressure device and a sound alarm device, the negative pressure device comprises a display centralized control assembly, a first negative pressure pipe and a second negative pressure pipe, the display centralized control assembly is installed on a drilling machine operation table and comprises a negative pressure container, a negative pressure meter and a regulation and control valve, and the sound alarm device comprises a connecting pipe, a buffer sealing bottle and an airflow sounding piece. When gushing is carried out in the drilling process, the airflow sounding piece generates sound under the action of gas flow to remind a driver to immediately increase the negative pressure through the regulating valve, so that the hysteresis in the prior art is eliminated, and the operation safety coefficient is improved.

Description

Technical Field

[0001] This utility model relates to the field of extraction drilling construction technology, and in particular to a gas sound alarm and negative pressure display centralized control system for extraction drilling. Background Technology

[0002] Gas control during gas drainage drilling is a key and challenging aspect of mine safety management, as numerous gas exceedance accidents have resulted from inadequate preventative measures. The main causes of gas overflow during drilling include coal seam fissures, inadequate borehole sealing, and pressure release caused by the drill rod tail being opened to the outside after water removal.

[0003] In the existing technology, the common practice to address the problem of gas overflow from orifices is to install a blowout preventer with a sealing gasket at the orifice. The blowout preventer has a negative pressure system at the top and a slag discharge system at the bottom, so that water and slag flow at a lower level and gas flows at a higher level, thus achieving a diversion effect and preventing gas overflow to a certain extent.

[0004] However, this structure still has the following defects: when encountering hole collapse and blockage during drilling, continuous water supply causes a large amount of gas, water and coal mixture to gush out instantly. The negative pressure extraction capacity cannot meet the instantaneous extraction requirements, and the negative pressure needs to be manually increased. This process often takes time and exhibits a certain lag, which can easily cause gas accidents. Utility Model Content

[0005] To overcome the technical defect of the existing blowout prevention device having a lag in negative pressure regulation, this utility model provides a gas sound alarm and negative pressure display centralized control system for extraction boreholes.

[0006] The gas extraction borehole sound alarm and negative pressure display centralized control system provided by this utility model includes:

[0007] Blowout preventer, which is used to seal the drill rod and the borehole opening;

[0008] A slag discharge device, which is connected to the bottom of the blowout preventer;

[0009] The extraction pipeline creates a negative pressure environment inside it.

[0010] Its characteristic is that it further includes:

[0011] A negative pressure device includes a display and control assembly, a first negative pressure pipe, and a second negative pressure pipe. The display and control assembly is mounted on the drilling rig operating platform and includes a negative pressure container, a negative pressure gauge, and a control valve. The negative pressure gauge is mounted on the negative pressure container to monitor the pressure inside the container. The control valve is mounted on the exhaust port of the negative pressure container. One end of the first negative pressure pipe is connected to the top of the blowout preventer and the other end is connected to the air inlet of the negative pressure container. One end of the second negative pressure pipe is connected to the exhaust port of the negative pressure container and the other end is connected to the extraction pipeline.

[0012] An audible alarm device includes a connecting pipe, a buffer sealing bottle, and an airflow audible element. One end of the connecting pipe is connected to the top of the blowout preventer and the other end is connected to the air inlet of the buffer sealing bottle. The airflow audible element is installed on the exhaust port of the buffer sealing bottle.

[0013] Optionally, the airflow sound-generating element is a whistle.

[0014] Optionally, the airflow sound-generating element is connected to the exhaust port of the buffer sealed bottle via a connecting pipe.

[0015] Optionally, both the connecting pipe and the communicating pipe are rubber hoses.

[0016] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0017] This utility model provides a gas extraction borehole sound alarm and negative pressure display centralized control system, which includes a negative pressure device and a sound alarm device. The negative pressure device includes a display and control component, a first negative pressure pipe, and a second negative pressure pipe. The display and control component is installed on the drilling rig operating platform and includes a negative pressure container, a negative pressure gauge, and a control valve. The sound alarm device includes a connecting pipe, a buffer sealing bottle, and an airflow sound generator. When encountering borehole collapse or blockage during drilling and continuous water supply causes a large instantaneous outflow of a mixture of gas, water, and coal from the borehole, the negative pressure of the negative pressure device is insufficient to meet the instantaneous extraction requirements. Therefore, the gas will sequentially pass through the connecting pipe and the buffer sealing bottle and then be ejected from the airflow sound generator. The airflow sound generator produces sound under the action of the gas airflow, reminding the driver to immediately increase the negative pressure through the control valve. This eliminates the lag in the prior art and improves the operational safety factor. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the gas sound alarm and negative pressure display centralized control system for extraction boreholes in this embodiment of the present invention.

[0021] In the picture:

[0022] 1. Blowout preventer; 2. Slag discharge device; 3. Extraction pipeline; 4. Negative pressure device; 41. Display and control unit; 411. Negative pressure container; 412. Negative pressure gauge; 413. Control valve; 42. First negative pressure pipe; 43. Second negative pressure pipe; 5. Audible alarm device; 51. Connecting pipe; 52. Buffer sealing bottle; 53. Airflow sound generator; 54. Connecting pipe; 6. Drilling rig control panel; 7. Drill rod. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0024] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0026] The following is combined Figure 1 The specific embodiments of this utility model will be described in detail below.

[0027] This embodiment provides a gas extraction borehole sound alarm and negative pressure display centralized control system, including a blowout prevention device 1, a slag discharge device 2, an extraction pipeline 3, a negative pressure device 4, and a sound alarm device 5.

[0028] Among them, the blowout preventer 1 is used to seal the drill rod 7 and seal the hole opening; the slag discharge device 2 is connected to the bottom of the blowout preventer 1; a negative pressure environment is formed in the extraction pipeline 3.

[0029] It should be noted that the blowout preventer 1, the slag discharge device 2, and the extraction pipeline 3 are all existing structures and will not be described in detail here. The improvements in this system lie in the improvement of the negative pressure device 4 and the addition of an audible alarm device 5. These will be discussed in detail below.

[0030] The negative pressure device 4 includes a display and control assembly 41, a first negative pressure pipe 42, and a second negative pressure pipe 43. The display and control assembly 41 is installed on the drilling rig operating platform 6 and includes a negative pressure container 411, a negative pressure gauge 412, and a control valve 413. The negative pressure gauge 412 is installed on the negative pressure container 411 to monitor the pressure inside the negative pressure container 411. The control valve 413 is installed at the exhaust port of the negative pressure container 411. One end of the first negative pressure pipe 42 is connected to the top of the blowout preventer 1, and the other end is connected to the air inlet of the negative pressure container 411. One end of the second negative pressure pipe 43 is connected to the exhaust port of the negative pressure container 411, and the other end is connected to the extraction pipeline 3.

[0031] It is easy to understand that the negative pressure container 411 has two air ports, namely an air inlet and an air outlet.

[0032] It is easy to understand that since the display control unit 41 is installed on the drilling rig control panel 6 and is within the controllable range of the drilling rig operator, the drilling rig operator can monitor the real-time pressure value of the negative pressure gauge 412 at any time, and adjust the negative pressure value by controlling the valve 413 when necessary based on the pressure value of the negative pressure gauge 412.

[0033] The sound alarm device 5 includes a connecting pipe 51, a buffer sealing bottle 52, and an airflow sound generator 53. One end of the connecting pipe 51 is connected to the top of the blowout preventer 1 and the other end is connected to the air inlet of the buffer sealing bottle 52. The airflow sound generator 53 is installed on the exhaust port of the buffer sealing bottle 52.

[0034] It is easy to understand that the airflow sound generator 53 is a device that emits sound when airflow passes through it. For example, in this embodiment, the airflow sound generator 53 is a whistle.

[0035] It is easy to understand that the buffer sealing bottle 52 has two air ports, namely an air inlet and an air outlet.

[0036] Specifically, the airflow sound-generating component 53 is connected to the exhaust port of the buffer sealed bottle 52 through the connecting pipe 54.

[0037] Specifically, both connecting pipe 51 and connecting pipe 54 are rubber hoses. The elastic material of the rubber hoses can buffer the instantaneous pressure changes of the airflow to a certain extent, thereby reducing the noise caused by the airflow pulse and making the whistling sound more stable.

[0038] The working principle of the gas sound alarm and negative pressure display centralized control system for extraction boreholes in this embodiment is as follows:

[0039] When drilling encounters a hole collapse or blockage and water is continuously supplied, causing a large amount of gas, water, and coal mixture to gush out instantly, the negative pressure of the negative pressure device 4 is insufficient to meet the instantaneous extraction requirements. Therefore, the gas will pass through the connecting pipe 51 and the buffer sealing bottle 52 in sequence and then be ejected from the airflow sound-generating device 53. The airflow sound-generating device 53 produces a sound under the action of the gas flow, reminding the driver to immediately increase the negative pressure by adjusting the control valve 413. This eliminates the lag in the existing technology and improves the safety factor of the operation.

[0040] The above are merely specific embodiments of this utility model, enabling those skilled in the art to understand or implement this utility model. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A centralized control system for sound alarm and negative pressure display of gas in extraction boreholes, comprising: Blowout preventer (1), which is used to seal the drill rod (7) and seal the opening of the borehole; Slag discharge device (2), which is connected to the bottom of the blowout preventer (1); The extraction pipeline (3) has a negative pressure environment inside it; Its characteristic is that it further includes: The negative pressure device (4) includes a display control assembly (41), a first negative pressure pipe (42), and a second negative pressure pipe (43). The display control assembly (41) is installed on the drilling rig operating table (6) and includes a negative pressure container (411), a negative pressure gauge (412), and a control valve (413). The negative pressure gauge (412) is installed on the negative pressure container (411) to monitor the pressure inside the negative pressure container (411). The control valve (413) is installed at the exhaust port of the negative pressure container (411). One end of the first negative pressure pipe (42) is connected to the top of the blowout preventer (1), and the other end is connected to the air inlet of the negative pressure container (411). One end of the second negative pressure pipe (43) is connected to the exhaust port of the negative pressure container (411), and the other end is connected to the extraction pipeline (3). The sound alarm device (5) includes a connecting pipe (51), a buffer sealing bottle (52) and an airflow sound generator (53). One end of the connecting pipe (51) is connected to the top of the blowout preventer (1) and the other end is connected to the air inlet of the buffer sealing bottle (52). The airflow sound generator (53) is installed on the exhaust port of the buffer sealing bottle (52).

2. The gas sound alarm and negative pressure display centralized control system for extraction boreholes according to claim 1, characterized in that, The airflow sound-generating component (53) is a whistle.

3. The gas sound alarm and negative pressure display centralized control system for extraction boreholes according to claim 1 or 2, characterized in that, The airflow sound generator (53) is connected to the exhaust port of the buffer sealed bottle (52) through the connecting pipe (54).

4. The gas sound alarm and negative pressure display centralized control system for extraction boreholes according to claim 3, characterized in that, Both the connecting pipe (51) and the connecting tube (54) are rubber hoses.

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