CN215449171U

CN215449171U - Mining pipeline gas detection device

Info

Publication number: CN215449171U
Application number: CN202121102712.6U
Authority: CN
Inventors: 佐志伟; 孙茂如; 汪有清; 李虎; 王震; 代卫; 李冲
Original assignee: China Coal Xinji Energy Co Ltd
Current assignee: China Coal Xinji Energy Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-01-07
Anticipated expiration: 2031-05-21

Abstract

The utility model discloses a mining pipeline gas detection device, which relates to the technical field of air quality monitoring and comprises a gas storage chamber, wherein a gas sensing network is arranged in the gas storage chamber, the gas sensing network is electrically connected with an alarm device, and a coupling part is detachably connected at an opening of the gas storage chamber and is used for being connected with an access port of a pumping and discharging pipeline. This device mainly used is through connecting collecting space area exhaust duct to the monitoring of collecting space area gas concentration in the mine operation, can directly gather collecting space area combustion gas, and through the multiple gas sensor that sets up, oxygen in the real-time supervision pipeline, the concentration condition of gases such as methane provides the reference basis for the sign of starting a fire in the collecting space area.

Description

Mining pipeline gas detection device

Technical Field

The utility model relates to the technical field of air quality monitoring, in particular to a mining pipeline gas detection device.

Background

Mine fires are one of the main disasters of coal mines, wherein more than 90 percent of reasons are attributed to natural ignition of a goaf, so that monitoring of gas concentration of the goaf is an important premise for safe production of the coal mine. At present, most methods for detecting gas components in mine goafs at home and abroad adopt an underground beam tube monitoring system or a manual sampling ground test mode, however, the underground beam tube monitoring system has a complex structure, the pipeline arrangement is too long, and the sampling effectiveness is difficult to guarantee; although the sampling and testing results of the manual sampling ground testing method can be guaranteed, the timeliness of the detection is greatly reduced due to separation of sampling and detection work, continuous monitoring is difficult to achieve, the effect of timely early warning cannot be achieved, the real situation in the goaf cannot be comprehensively reflected, and therefore potential safety hazards under fire hazard burying of the goaf are also avoided.

Therefore, it is necessary to design a simple, portable and reliable goaf gas rapid testing device.

SUMMERY OF THE UTILITY MODEL

The utility model can directly collect the gas discharged from the goaf by connecting with the goaf air exhaust pipeline, solves the technical problems of difficult sampling and incapability of synchronous sampling and detection in the background technology, and provides the simple, portable and reliable mining pipeline gas detection device capable of quickly testing.

In order to solve the technical problems in the background technology, the utility model adopts the following technical scheme:

the utility model provides a gaseous detection device of mining pipeline, includes gaseous apotheca, be equipped with gaseous sensing network in the gaseous apotheca, gaseous sensing network electricity connection alarm device, gaseous apotheca opening part detachable is connected with coupling part for it links to each other with the mouth that inserts of drainage pipeline.

As an optimized scheme, the coupling component comprises a first connecting end and a second connecting end, and the first connecting end and the second connecting end are detachably connected with the interfaces of the gas storage chamber and the pumping and discharging pipeline respectively.

According to the optimization scheme, the first connecting end is provided with a connector, the outer surface of the connector is provided with external threads, the inner wall of the opening of the gas storage chamber is provided with internal threads matched with the internal threads, and the first connecting end is in threaded connection with the gas storage chamber.

As an optimization scheme, a first filtering mechanism and a second filtering mechanism are arranged in the second connecting end, and gas entering the second connecting end is subjected to circulating filtration between the two filtering mechanisms.

As an optimized scheme, the first filtering mechanism is an accommodating cavity arranged in the second connecting end, a dust filter screen and a steam-water separation device are sequentially arranged at the top of the accommodating cavity, and the bottom of the accommodating cavity is communicated with the second filtering mechanism, so that the circular filtration of gas is realized.

As an optimized scheme, the second filtering mechanism is an air inlet and an air outlet connected with the bottom of the accommodating chamber, and an air inlet guide pipe and an air outlet guide pipe which are respectively connected with the air inlet and the air outlet in a matched manner, and the air inlet guide pipe and the air outlet guide pipe are both inserted into the pumping and releasing pipeline.

As an optimized scheme, the bottom end of the air inlet conduit is provided with an opening inclined to the axis of the air inlet conduit, the top end of the opening extends upwards on the outer surface of the air inlet conduit along the axis direction of the air inlet conduit, the opening direction is opposite to the gas flowing direction in the suction and discharge pipeline, and gas is blown into the second filtering mechanism through the opening; the bottom end of the air outlet guide pipe is also provided with an opening inclined with the axis, the top end of the opening extends upwards on the outer surface of the air outlet guide pipe along the axis direction of the air outlet guide pipe, the opening direction is opposite to the gas flowing direction in the pumping and discharging pipeline, and gas filtered from the second connecting end returns to the pumping and discharging pipeline along the opening.

As an optimization scheme, the outer surface of the second connecting end is provided with a clamping seat matched with the connector of the pumping and discharging pipeline, a clamping hoop is arranged on the clamping seat, and a silica gel sealing gasket is arranged on the inner wall of the clamping hoop.

As an optimized scheme, the alarm device is an alarm lamp surrounding the opening of the gas storage chamber and/or a buzzer arranged in the gas storage chamber, and the alarm lamp and the buzzer are both electrically connected with the gas sensing network.

As an optimization scheme, a gas concentration display is arranged on the outer surface of the gas storage chamber, a color regulator is arranged in the gas concentration display, and the color regulator displays different colors according to the concentration condition of the gas to be measured.

Compared with the prior art, the utility model has the advantages that:

this device is through connecting collecting space area bleed-off line, can directly gather collecting space area combustion gas, and through the multiple gas sensor who sets up, the concentration condition of gas such as oxygen, methane in the real-time supervision pipeline provides the reference basis for the sign of starting a fire in the collecting space area. A multilayer filtering structure is nested in the device, so that the gas to be detected can be filtered layer by layer, and the detection result is more accurate; in addition, the device is provided with an alarm device, when the concentration of the gas to be detected exceeds a preset threshold value, the device starts the alarm device to perform early warning on surrounding workers, so that prejudgment can be made in advance, and potential safety hazards are reduced. The device has the advantages of simple structure, convenience in carrying and operation, and is suitable for rapid detection of goaf gas.

Drawings

FIG. 1 is a front view of a mining pipeline gas detection device of the utility model;

FIG. 2 is a cross-sectional view of a coupling component in the pipeline gas detection device for mining of the utility model;

wherein, 1-a gas storage chamber, 2-a gas sensing network, 3-an alarm device, 3 a-an alarm lamp, 4-a coupling component, 41-a first connecting end, 41 a-a connecting head, 41 b-an external thread, 42-a second connecting end, 42 a-a first filtering mechanism, 42 b-a second filtering mechanism, 5-a containing chamber, 6-a dust filtering screen, 7-a gas-water separating device, 8-a gas inlet, 9-a gas outlet, 10-a gas inlet pipeline, 11-a gas outlet pipeline, 12-a gas inlet opening, 13-a gas outlet opening, 14-a clamping seat, 15-a clamping hoop, 16-a silica gel sealing gasket, 17-a gas concentration display, 17 a-a color regulating device, 18-a pumping and discharging pipeline, and 19-a power supply component, 20-buzzer, 21-handle.

Detailed Description

Hereinafter, in order to facilitate the technical solution of the present invention for those skilled in the art to understand, further description will be made with reference to the accompanying drawings. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

According to one embodiment of the utility model shown in fig. 1, a mining pipeline gas detection device comprises a gas storage chamber 1, wherein a handle 21 is arranged at the top end of the gas storage chamber 1, the gas storage chamber can be conveniently carried by a worker, and a power supply assembly 19 is arranged on the outer surface of the gas storage chamber 1 and used for providing a continuous and stable power supply for the device. The gas storage chamber 1 is internally provided with a gas sensing network 2, the gas sensing network 2 is composed of a plurality of gas sensor elements and a singlechip, wherein the gas sensor elements comprise but are not limited to an oxygen sensor, a methane sensor and the like, the sensors can be used for detecting the concentration of various gases in the air of a goaf, the gas sensing network 2 is electrically connected with an alarm device 3, the singlechip of the gas sensing network is used as an early warning control center of the whole device, a to-be-detected gas concentration threshold value is preset in a control program of the gas sensing network, when the concentration of the to-be-detected gas exceeds the corresponding threshold value, the singlechip sends an early warning signal to the alarm device 3, the alarm device 3 makes early warning action according to the instruction of the singlechip, a coupling part 4 matched with an access port of a drainage pipeline 18 is arranged at the opening of the gas storage chamber 1, and the air of the goaf circulates in the drainage pipeline 18, and enters the gas storage chamber 1 through the coupling part 4 for real-time detection.

Further, the coupling component 4 includes a first connection end 41 and a second connection end 42, the first connection end 41 is connected to the gas storage chamber 1, the first connection end 41 is provided with a connection head 41a, the connection head 41a is provided with an external thread, correspondingly, the inner wall of the opening of the gas storage chamber 1 is provided with an internal thread matched with the connection head 41a, the connection head 41a is in threaded connection with the gas storage chamber 1, and of course, the connection mode of the two connection modes may be a snap-fit mode or other detachable connection modes; the second link 42 is used for connecting with the access of drainage pipeline 18, and the surface of second link 42 is equipped with the cassette 14 of interface looks adaptation with drainage pipeline 18, and under normal circumstances, the diameter of cassette 14 sets to 50mm, is equipped with clamp 15 on the cassette 14, is used for sealed cassette 14 and access, simultaneously, for better play sealed effect, preferably, is equipped with the sealed pad 16 of silica gel on the clamp 15 inner wall.

Further, a first filtering mechanism 42a and a second filtering mechanism 42b are arranged in the second connecting end 42, and the gas entering the second connecting end 42 can be circularly filtered between the two filtering mechanisms.

The first filtering mechanism 42a is an accommodating chamber 5 arranged in the second connecting end 42, two walls of the accommodating chamber 5 are formed by two sides of the second connecting end 42, the top of the accommodating chamber is sequentially provided with a dust filtering net 6 for filtering dust in gas entering the chamber and a gas-water separating device 7 for filtering moisture in the gas, in order to better absorb moisture in the gas to be detected, the gas-water separating device 7 is designed into a filtering net with a plurality of water dividing sheets sleeved on the surface, so that water and vapor in the gas to be detected are separated, and long-time contact between the water and electronic components such as sensor elements in the gas storage chamber 1 can be avoided as much as possible; the bottom of the accommodating chamber is communicated with the second filtering mechanism 42b, so that the circular filtering of the gas is realized.

The second filtering mechanism 42b includes a gas inlet 8 and a gas outlet 9 disposed at the bottom of the accommodating chamber 5, the gas inlet 8 is connected to a gas inlet conduit 10 for collecting gas flowing in the pipeline, the gas outlet 9 is connected to a gas outlet pipeline 11 for discharging gas discharged from the device, the gas inlet conduit 10 and the gas outlet conduit 11 are both inserted into the exhaust pipeline 18, and the lengths of the two conduits are preferably 170 mm.

Further, an air inlet opening 12 inclined to the axis is provided at the bottom end of the air inlet duct 10, the top end of the air inlet opening 12 extends upwards to 110mm along the axis of the air inlet duct 10 on the outer surface, in order to better collect the air in the suction pipe 18, the direction of the air inlet opening 12 is opposite to the air flowing direction in the suction pipe 18, and the air is blown into the second filtering mechanism 42b through the air inlet opening 12; the bottom end of the gas outlet guide pipe 11 is also provided with a gas outlet opening 13 inclined with the axis, the top end of the gas outlet opening 13 extends upwards on the outer surface of the gas outlet guide pipe 11 along the axis direction of the gas outlet guide pipe, the direction of the gas outlet opening 13 is opposite to the flowing direction of the gas in the pumping and discharging pipeline 18, the gas filtered from the second connecting end 42 returns to the pumping and discharging pipeline 18 along the gas outlet opening 13, and the blockage of two gas ports by large-particle coal dust and other substances doped in the gas flowing in the pipeline can be effectively prevented by increasing the areas of the gas inlet opening 12 and the gas outlet opening 13.

Further, the alarm device in the device is an alarm lamp 3a arranged at the opening of the gas storage chamber 1, the alarm lamp 3a is electrically connected with the gas sensing network 2, and the singlechip in the gas sensing network 2 can send out an early warning signal to control the alarm lamp 3a to flash; the alarm device further comprises a buzzer 20 arranged in the gas storage chamber 1, the buzzer 20 is electrically connected with the gas sensing network 2, and the buzzer 20 sends out an early warning signal according to the fact that the singlechip in the gas sensing network 2 sends out an early warning whistle.

Further, a gas concentration display 17 is nested on the outer surface of the gas storage chamber 1, the gas concentration display 17 is an LED display module, the gas concentration display 17 is electrically connected with the gas sensing network 2, when the concentration of a certain gas to be measured exceeds a threshold value, the single chip microcomputer sends information such as an overproof gas type and a concentration value thereof to the gas concentration display 17, the gas concentration display 17 displays corresponding information, meanwhile, a color regulator 17a is arranged in the gas concentration display 17, the color regulator 17a can display different colors according to the overproof proportion condition of the concentration of the gas, for example, when the concentration of a certain gas to be measured is normal, the color regulator 17a displays blue, when the concentration of a certain gas to be measured exceeds a normal ratio of 5% -10%, the color regulator 17a displays yellow, when the concentration of a certain gas to be measured exceeds a normal ratio of 10%, color modulator 17a is shown in red so that a visual alarm signal can be provided to the field crew.

The working principle of the utility model is as follows: the device is arranged on an access port of an air extraction pipeline 18, gas to be detected in the air extraction pipeline 18 enters an accommodating chamber 5 through an air inlet opening 12 under the action of pressure and moves upwards in the accommodating chamber 5, one part of the gas to be detected is discharged from an air outlet guide pipe 11, the other part of the gas to be detected is filtered layer by layer through a dust filter screen 6 and a gas-water separation device 7 in the accommodating chamber 5 and finally converges into a gas storage chamber 1 for detection, at the moment, a gas sensing network 2 arranged in the gas storage chamber 1 correspondingly detects the concentrations of different types of gas according to gas sensor elements arranged in the gas sensing network, the detection result is fed back to a single chip microcomputer in the gas sensing network 2, the single chip microcomputer analyzes and judges, when the concentration of certain type of gas exceeds a preset threshold value, the single chip microcomputer sends an early warning signal to an alarm device, so that a worker can be reminded in time, the pre-judgment is made in advance, and the potential safety hazard is reduced.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a gaseous detection device of mining pipeline, includes gaseous apotheca (1), be equipped with gaseous sensing network (2) in gaseous apotheca (1), gaseous sensing network (2) electricity connection alarm device (3), its characterized in that: the opening of the gas storage chamber (1) is detachably connected with a coupling part (4) which is used for being connected with an access opening of a pumping and discharging pipeline (18).

2. The mining pipeline gas detection device according to claim 1, characterized in that: the coupling component (4) comprises a first connecting end (41) and a second connecting end (42), and the first connecting end (41) and the second connecting end (42) are detachably connected with the gas storage chamber (1) and the access port of the pumping and discharging pipeline (18) respectively.

3. The mining pipeline gas detection device according to claim 2, characterized in that: one end of the first connecting end (41) is provided with a connecting head (41a), the outer surface of the connecting head (41a) is provided with external threads (41b), the inner wall of the opening of the gas storage chamber (1) is provided with internal threads matched with the internal threads, and the first connecting end (41) is in threaded connection with the gas storage chamber (1).

4. The mining pipeline gas detection device of claim 3, characterized in that: and a first filtering mechanism (42a) and a second filtering mechanism (42b) are arranged in the second connecting end (42), and the gas entering the second connecting end (42) realizes circulating filtration between the two filtering mechanisms.

5. The mining pipeline gas detection device according to claim 4, characterized in that: the first filtering mechanism (42a) is an accommodating chamber (5) arranged in the second connecting end (42), the top of the accommodating chamber (5) is sequentially provided with a dust filter screen (6) and a gas-water separation device (7), and the bottom of the accommodating chamber (5) is communicated with the second filtering mechanism (42 b).

6. The mining pipeline gas detection device of claim 5, wherein: the second filtering mechanism (42b) is an air inlet (8) and an air outlet (9) connected with the bottom of the accommodating cavity (5), and an air inlet guide pipe (10) and an air outlet guide pipe (11) which are respectively connected with the air inlet (8) and the air outlet (9) in a matched mode, and the air inlet guide pipe (10) and the air outlet guide pipe (11) are inserted into the pumping and releasing pipeline (18).

7. The mining pipeline gas detection device of claim 6, wherein: the bottom end of the air inlet guide pipe (10) is provided with an air inlet opening (12) inclined to the axis of the air inlet guide pipe, the top end of the air inlet opening (12) extends upwards on the outer surface of the air inlet guide pipe (10) along the axis direction of the air inlet guide pipe, the direction of the air inlet opening (12) is opposite to the flowing direction of the air in the exhaust pipeline (18), and the air is blown into the second filtering mechanism (42b) through the air inlet opening (12); the bottom end of the air outlet guide pipe (11) is also provided with an air outlet opening (13) inclined to the axis of the air outlet guide pipe, the top end of the air outlet opening (13) extends upwards on the outer surface of the air outlet guide pipe (11) along the axis direction of the air outlet guide pipe, the direction of the air outlet opening (13) is back to the flowing direction of air in the pumping and discharging pipeline (18), and air filtered out from the second connecting end (42) returns to the pumping and discharging pipeline (18) along the air outlet opening (13).

8. The mining pipeline gas detection device according to any one of claims 4 to 7, characterized in that: the outer surface of the second connecting end (42) is provided with a clamping seat (14) matched with the connector of the pumping and discharging pipeline (18), a clamping hoop (15) is arranged on the clamping seat (14), and a silica gel sealing gasket (16) is arranged on the inner wall of the clamping hoop (15).

9. The mining pipeline gas detection device of claim 8, wherein: alarm device (3) are alarm lamp (3a) and or bee calling organ (20) of setting in gaseous reservoir (1) for encircleing at gaseous reservoir (1) opening part, alarm lamp (3a) and bee calling organ (20) all are connected with gas sensing network (2) electricity.

10. The mining pipeline gas detection device of claim 9, wherein: the gas concentration display (17) is arranged on the outer surface of the gas storage chamber (1), the color regulator (17a) is arranged in the gas concentration display (17), and the color regulator (17a) displays different colors according to the concentration condition of the gas to be measured.