CN215931148U - Coal mine underground coal seam gas pressure detection device - Google Patents
Coal mine underground coal seam gas pressure detection device Download PDFInfo
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- CN215931148U CN215931148U CN202122395960.0U CN202122395960U CN215931148U CN 215931148 U CN215931148 U CN 215931148U CN 202122395960 U CN202122395960 U CN 202122395960U CN 215931148 U CN215931148 U CN 215931148U
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Abstract
The utility model discloses a coal mine underground coal seam gas pressure detection device, which comprises a coal seam, wherein the left side relative position of the coal seam is a rock stratum, a signal transmitting module is arranged at the inner relative position of the rock stratum, a grouting module is arranged between the rock stratum and the signal transmitting module, the signal transmitting module comprises a grating module for measuring coal seam data, the grating module is positioned in the coal seam, a sleeve is arranged on the left side of the grating module, a pressure signal transmitter is arranged at the left end of the sleeve, the sleeve is of a hollow tubular structure, the grating module is communicated with the pressure signal transmitter through an optical cable, a plugging module is arranged at the left side relative position of the pressure signal transmitter, and the plugging module is positioned in the sleeve; the plugging module comprises a cylindrical plugging column, a through hole is formed in the plugging column, the diameter of the through hole in the plugging column is matched with that of the optical cable, and an inflation tube is arranged on the air bag ring and penetrates through the air pipe hole to be communicated with the outside. The utility model has the beneficial effects that: the detection accuracy can be improved.
Description
Technical Field
The utility model belongs to the technical field of gas detection, and particularly relates to a coal mine underground coal seam gas pressure detection device.
Background
Coal is in a main status in energy consumption structures in China all the time, coal and gas outburst disasters in the underground production process are increasingly serious along with increasing coal mining depth, the coal and gas outburst is a very complex mine gas power phenomenon in underground coal mine production, the coal and gas outburst is mainly a result of combined action of ground stress, gas pressure and physical and mechanical properties of coal bodies, and disasters such as gas explosion, coal dust explosion and the like can destroy the whole working face and even the whole mine when the coal and gas outburst occurs, so the coal and gas outburst poses serious threats to safety production of coal mines. The coal bed gas pressure is one of main parameters for identifying the outburst risk degree of a mine, so how to realize dynamic detection of the gas pressure of the whole life cycle of the coal bed is the main problem to be solved by the utility model, common monitoring equipment under the coal mine is developed towards intellectualization along with the popularization of intellectualization in the mining industry, at present, the measurement method of the coal bed gas pressure mainly comprises a gas pressure direct measurement method, a gas pressure indirect measurement method and a self-drilling coal bed gas pressure in-situ measurement method, and the measurement methods have certain defects in terms of the methods: 1. a large amount of personnel is required to read the display data of the pressure testing instrument, and when the number of tested drill holes is large, the workload is large; 2. the coal mine underground coal bed gas pressure detection device can not display the numerical value of the coal bed gas pressure in real time, has certain hysteresis in the coal bed gas pressure reaction, and can not realize the continuous monitoring of the coal bed gas pressure; the detection device utilizes the characteristics of high sensitivity, rapidness and explosion prevention of the fiber bragg grating to rapidly detect the gas pressure in the underground coal bed, realizes real-time dynamic transmission of the gas pressure in the coal bed through a signal transmission system, and realizes dynamic monitoring of the whole life cycle of the gas pressure in the coal bed; however, this device also has a problem that a small amount of gas is drawn along and the channel of the signal transmission cable leaks outward, causing inaccuracy in the result, and for this reason, a solution has been sought.
SUMMERY OF THE UTILITY MODEL
The utility model provides a coal mine underground coal seam gas pressure detection device which can improve detection precision.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a coal mine underground coal seam gas pressure detection device comprises a coal seam, a rock stratum is arranged at the left side relative position of the coal seam, a signal transmitting module is arranged at the inner relative position of the rock stratum, a grouting module is arranged between the rock stratum and the signal transmitting module, the signal transmitting module comprises a grating module used for measuring coal seam data, the grating module is positioned inside the coal seam, a sleeve is arranged at the left side of the grating module, a pressure signal transmitter is arranged at the left end of the sleeve, the sleeve is of a hollow tubular structure, the grating module is communicated with the pressure signal transmitter through an optical cable, a plugging module is arranged at the left side relative position of the pressure signal transmitter and positioned inside the sleeve, the plugging module comprises a cylindrical plugging column, a through hole is formed in the plugging column, the diameter of the through hole in the plugging column is matched with the diameter of the optical cable, the optical cable penetrates through the plugging column through the through hole of the plugging column, and a left rubber ring is arranged at the left side relative position of the surface of the plugging column, the right rubber ring is arranged at the right opposite position on the surface of the plugging column, a groove is formed in the middle of the surface of the plugging column, an annular air bag ring is arranged in the groove, an air pipe hole is formed in the plugging column, an inflation pipe is arranged on the air bag ring, and the inflation pipe penetrates through the air pipe hole and is communicated with the outside.
Further, the diameter of the left rubber ring is the same as that of the right rubber ring, and the diameter of the left rubber ring and the diameter of the right rubber ring are matched with the diameter of the inner wall of the sleeve.
Furthermore, the inflation tube penetrates through the plugging column through the air tube hole, and the inflation tube penetrates through the sleeve through a through hole in the sleeve.
Furthermore, the gap between the outer surface of the plugging column and the inner surface of the sleeve is arranged.
Furthermore, the diameter of the expanded balloon ring is matched with the diameter of the inner wall of the sleeve.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, by arranging the plugging module, the interior of the sleeve is plugged by the plugging module, so that gas flow does not exist any more, at the moment, the whole device is started, the grating module transmits a signal measured by the pressure in the coal bed to the pressure signal transmitter through the optical cable, no other gas or gas flows to the outside through the space in the sleeve, and the value measured by the grating module is more accurate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a plugging module;
figure 3 is a side view of a plugging module.
In the figure: 1. the system comprises a coal seam, 2 rock strata, 3 signal transmitting modules, 4 grouting modules, 5 casings, 6 optical cables, 7 grating modules, 8 pressure signal transmitters, 9 plugging modules, 10 plugging columns, 11 right rubber rings, 12 left rubber rings, 13 air bag rings, 14 inflation pipes and 15 air pipe holes.
Detailed Description
Example (b): as shown in fig. 1, 2 and 3, the coal seam comprises a coal seam 1, a rock stratum 2 is arranged at a left side relative position of the coal seam 1, a signal transmitting module 3 is arranged at a relative position inside the rock stratum 2, a grouting module 4 is arranged between the rock stratum 2 and the signal transmitting module 3, the signal transmitting module 3 comprises a grating module 7 for measuring data of the coal seam 1, the grating module 7 is positioned inside the coal seam 1, a casing 5 is arranged at the left side of the grating module 7, a pressure signal transmitter 8 is arranged at the left end of the casing 5, the casing 5 is of a hollow tubular structure, the grating module 7 is communicated with the pressure signal transmitter 8 through an optical cable 6, a plugging module 9 is arranged at a left side relative position of the pressure signal transmitter 8, the plugging module 9 is positioned inside the casing 5, the plugging module 9 comprises a cylindrical plugging column 10, a through hole is formed inside the plugging column 10, and the diameter of the through hole on the plugging column 10 is matched with the diameter of the optical cable 6, the optical cable 6 penetrates through the plugging column 10 through a through hole of the plugging column 10, a left rubber ring 12 is arranged at the left side relative position on the surface of the plugging column 10, a right rubber ring 11 is arranged at the right side relative position on the surface of the plugging column 10, a groove is arranged at the middle position on the surface of the plugging column 10, an annular air bag ring 13 is arranged in the groove, an air pipe hole 15 is formed in the plugging column 10, an air inflation pipe 14 is arranged on the air bag ring 13, and the air inflation pipe 14 penetrates through the air pipe hole 15 to be communicated with the outside. The diameter of the left rubber ring 12 is the same as that of the right rubber ring 11, the diameter of the left rubber ring 12 and the diameter of the right rubber ring 11 are matched with the diameter of the inner wall of the sleeve 5, the inflation tube 14 penetrates through the plugging column 10 through the air tube hole 15, the inflation tube 14 penetrates through the sleeve 5 through a through hole in the sleeve 5, the outer surface of the plugging column 10 is arranged in a gap with the inner surface of the sleeve 5, and the diameter of the expanded air bag ring 13 is matched with the diameter of the inner wall of the sleeve 5.
The working process is as follows: installing a left rubber ring 12 and a right rubber ring 11 on the surface of a plugging column 10, then installing an air bag ring 13 in a groove of the plugging column 10, then penetrating an air inflation tube 14 attached to the air bag ring 13 through an air tube hole 15 on the plugging column 10, always communicating the air inflation tube 14 to the outside, then penetrating an optical cable 6 through a through hole in the middle of the plugging column 10, then installing a part of the whole plugging module 9 in a sleeve 5, and then installing a pressure signal emitter 8; left side rubber circle 12 and right side rubber circle 11 and sleeve pipe 5's inner wall contact, inflate for gasbag circle 13 through gas tube 14 this moment, gasbag circle 13 constantly expands, finally also with sleeve pipe 5's inner wall contact, simultaneously will block up shutoff post 10 card, the inside shutoff module 9 that is blocked up by casing pipe 5 this moment, no longer there is gas flow, at this moment, start whole device, grating module 7 carries for pressure signal transmitter 8 through optical cable 6 after measuring the signal with the inside pressure in coal seam 1, there is not other gas or gas to circulate to the external world through the inside space of sleeve pipe 5, grating module 7 measured numerical value is more accurate.
Claims (5)
1. The utility model provides a colliery is coal seam gas pressure detection device in pit which characterized in that: the coal seam monitoring device comprises a coal seam (1), a rock stratum (2) is arranged at the left side relative position of the coal seam (1), a signal transmitting module (3) is arranged at the inner relative position of the rock stratum (2), a grouting module (4) is arranged between the rock stratum (2) and the signal transmitting module (3), the signal transmitting module (3) comprises a grating module (7) used for measuring data of the coal seam (1), the grating module (7) is positioned inside the coal seam (1), a casing (5) is arranged at the left side of the grating module (7), a pressure signal transmitter (8) is arranged at the left end of the casing (5), the casing (5) is of a hollow tubular structure, the grating module (7) is communicated with the pressure signal transmitter (8) through an optical cable (6), a plugging module (9) is arranged at the left side relative position of the pressure signal transmitter (8), the plugging module (9) is positioned inside the casing (5), the plugging module (9) comprises a cylindrical plugging column (10), the inside through-hole that has opened of shutoff post (10), the diameter of through-hole and the diameter looks adaptation of optical cable (6) are gone up in shutoff post (10), optical cable (6) run through shutoff post (10) through the through-hole of shutoff post (10), shutoff post (10) surface left side relative position is equipped with left side rubber ring (12), shutoff post (10) surface right side relative position is equipped with right side rubber ring (11), shutoff post (10) surface intermediate position is equipped with the recess, be equipped with annular gasbag circle (13) in the recess, inside trachea hole (15) that are equipped with of shutoff post (10), be equipped with gas tube (14) on gasbag circle (13), gas tube (14) pass trachea hole (15) and are linked together with the external world.
2. The device for detecting the gas pressure in the coal mine underground coal seam according to claim 1, is characterized in that: the diameter of the left rubber ring (12) is the same as that of the right rubber ring (11), and the diameter of the left rubber ring (12) and the diameter of the right rubber ring (11) are both matched with the diameter of the inner wall of the sleeve (5).
3. The device for detecting the gas pressure in the coal mine underground coal seam according to claim 1, is characterized in that: the inflation tube (14) penetrates through the plugging column (10) through the air tube hole (15), and the inflation tube (14) penetrates through the sleeve (5) through the through hole in the sleeve (5).
4. The device for detecting the gas pressure in the coal mine underground coal seam according to claim 1, is characterized in that: the outer surface of the plugging column (10) is arranged in a clearance with the inner surface of the sleeve (5).
5. The device for detecting the gas pressure in the coal mine underground coal seam according to claim 1, is characterized in that: the diameter of the expanded air sac ring (13) is matched with the diameter of the inner wall of the sleeve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122395960.0U CN215931148U (en) | 2021-09-30 | 2021-09-30 | Coal mine underground coal seam gas pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122395960.0U CN215931148U (en) | 2021-09-30 | 2021-09-30 | Coal mine underground coal seam gas pressure detection device |
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| Publication Number | Publication Date |
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| CN215931148U true CN215931148U (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122395960.0U Active CN215931148U (en) | 2021-09-30 | 2021-09-30 | Coal mine underground coal seam gas pressure detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115263238A (en) * | 2022-07-18 | 2022-11-01 | 河南理工大学 | Natural gas well breakage gas leakage prevention device under influence of roadway driving |
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2021
- 2021-09-30 CN CN202122395960.0U patent/CN215931148U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115263238A (en) * | 2022-07-18 | 2022-11-01 | 河南理工大学 | Natural gas well breakage gas leakage prevention device under influence of roadway driving |
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