CN110185497B - Gas flow testing and alarming device for coal seam mining - Google Patents
Gas flow testing and alarming device for coal seam mining Download PDFInfo
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- CN110185497B CN110185497B CN201910581445.6A CN201910581445A CN110185497B CN 110185497 B CN110185497 B CN 110185497B CN 201910581445 A CN201910581445 A CN 201910581445A CN 110185497 B CN110185497 B CN 110185497B
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- pressure pipe
- total pressure
- static pressure
- detector
- outlet hose
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Abstract
The invention discloses a gas flow testing and alarming device for coal seam mining, which comprises a detector and a receiver, wherein a protective shell is arranged on the outer side of the detector, a static pressure pipe with a tubular structure is sleeved in the protective shell, a total pressure pipe with a tubular structure is sleeved in the static pressure pipe, a drilling depth measuring instrument is fixedly installed in the total pressure pipe, a static pressure pipe connection outlet hose and a total pressure pipe connection outlet hose are arranged at the upper end of the detector, and the static pressure pipe connection outlet hose and the total pressure pipe connection outlet hose are both connected with the receiver; according to the invention, the drill hole depth measuring instrument is welded on the inner wall of the total pressure pipe of the detector, so that the lowering depth can be recorded in real time when the detector is lowered into a drill hole, the corresponding gas concentration content in different coal beds can be accurately positioned, the accuracy and the practicability of a measuring result are increased, and great convenience and safety are brought to the safety work of mine affairs.
Description
Technical Field
The invention relates to a gas flow testing and alarming device, in particular to a gas flow testing and alarming device for coal seam mining.
Background
The gas flow testing and alarming device is an article which is frequently used by people in mine work at present, can detect whether dangerous gases such as natural gas, coal gas, liquefied petroleum gas and the like with certain concentration exist in the air or not, and can give an alarm in an acousto-optic mode when the concentration of the harmful gases reaches the degree harmful to human bodies. The gas outburst and the gas explosion are major disasters in coal mining, the prediction and the prevention of the disasters are always hot points of research in the mining field, a gas flow testing and alarming device is used in the coal mining process to detect gas in a coal seam, and when the gas concentration in the coal seam exceeds a standard, the gas flow testing and alarming device can give an alarm through a gas sensing device to remind measuring personnel that the concentration of the gas under the mine reaches the degree harmful to a human body, so that great safety guarantee is provided for the mine work under the open workers.
In the gas flow testing and alarming device in the prior art, the sensitive gas sensor is the most popular measuring method, the use is very convenient, but the gas flow testing and alarming device has the following defects in the specific use process:
1. when gas flow test alarm device is put into the drilling under by the hose connection, because lack the device of record degree of depth, people can not have timely accurate understanding to the gas concentration of the different degree of depth in the drilling, are difficult to discover that specific coal bed gas reveals, lead to the measuring result inaccurate, bring very big difficulty for the safe work of ore deposit.
2. The light alarm of the existing gas flow testing alarm device is not visual because of emitting light underground, and the sound alarm is also underground, so that the sound cannot be heard clearly, the measurement record of the detector to the gas concentration can have errors, and the measurer has no use value when the depth reaches a certain degree.
Disclosure of Invention
The invention aims to provide a gas flow testing and alarming device for coal mining, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a gas flow testing and alarming device for coal seam mining comprises a detector and a receiver, and is characterized in that a protective shell is arranged on the outer side of the detector, a static pressure pipe with a tubular structure is sleeved inside the protective shell, a total pressure pipe with a tubular structure is sleeved inside the static pressure pipe, a drilling depth measuring instrument is fixedly installed inside the total pressure pipe, a static pressure pipe connection outlet hose and a total pressure pipe connection outlet hose are arranged at the upper end of the detector, and the static pressure pipe connection outlet hose and the total pressure pipe connection outlet hose are connected with the receiver;
the skin of receiver is a shell, and fixed mounting has gas concentration sensor in the shell, the left side of shell bottom is equipped with the static pressure pipe hose that is linked together with static pressure union coupling export hose and inserts the mouth, the right side of shell bottom is equipped with and presses the hole hose to insert the mouth altogether that the pipe coupling export hose is linked together, static pressure pipe hose inserts the mouth and presses the hole hose to insert the mouth to connect on the inside gas concentration sensor of shell altogether, the left and right sides of gas concentration sensor up end is equipped with warning light and bee calling device respectively, gas concentration sensor and warning light, bee calling device looks electrical connection.
As a further scheme of the invention: the pipe wall of the total pressure pipe is provided with static pressure holes, and the six static pressure holes are uniformly distributed up and down along the total pressure pipe.
As a still further scheme of the invention: the bottom end of the detector is provided with a total pressure hole, and the total pressure hole penetrates through the protective shell, the static pressure pipe and the total pressure pipe.
As a still further scheme of the invention: the drilling depth measuring instrument is fixedly installed on the inner wall of the total pressure pipe through a bolt, and a protective cover is fixedly installed on the outer side of the drilling depth measuring instrument and on the inner wall of the total pressure pipe.
As a still further scheme of the invention: the static pressure pipe is connected with the outlet hose and is inserted and matched with the static pressure pipe, and the total pressure pipe is connected with the outlet hose and is inserted and matched with the total pressure pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the drill hole depth measuring instrument is welded on the inner wall of the total pressure pipe of the detector, so that the lowering depth can be recorded in real time when the detector is lowered into a drill hole, the corresponding gas concentration content in different coal beds can be accurately positioned, the accuracy and the practicability of a measuring result are increased, and great convenience and safety are brought to the safety work of mine affairs.
2. The invention connects the alarm lamp of light alarm and the buzzer of sound alarm to the gas concentration sensor of the receiver through the lead in the hose, so that the light alarm and the sound alarm can make people watch more intuitively and hear more clearly, and avoid the error or even mistake of the measurement record of the gas concentration caused by personal reasons of the detecting personnel, and when the drilling depth reaches the degree that the manpower is invisible and inaudible, the detector can still be used continuously.
Drawings
FIG. 1 is a schematic structural view of a gas flow testing and alarming device for coal mining;
FIG. 2 is a schematic diagram of a receiver;
in the figure: 1. a detector; 2. a receiver; 101. the static pressure pipe is connected with an outlet hose; 102. the total pressure pipe is connected with an outlet hose; 103. a protective housing; 104. a static pressure port; 105. a static pressure tube; 106. a drilling depth measuring instrument; 107. a total pressure pipe; 108. a protective cover; 109. total pressure holes; 201. an alarm light; 202. a buzzer; 203. a static pressure tube hose access port; 204. a gas concentration sensor; 205. a total pressure hole hose inlet; 207. a housing.
Detailed Description
Referring to fig. 1-2, in the embodiment of the present invention, a gas flow testing and alarming device for coal seam mining includes a detector 1 and a receiver 2, a protective housing 103 is disposed outside the detector 1, a static pressure pipe 105 of a tubular structure is sleeved inside the protective housing 103, a total pressure pipe 107 of a tubular structure is sleeved inside the static pressure pipe 105, a drilling depth measuring instrument 106 is fixedly installed inside the total pressure pipe 107, a static pressure pipe connection outlet hose 101 and a total pressure pipe connection outlet hose 102 are disposed at an upper end of the detector 1, and the static pressure pipe connection outlet hose 101 and the total pressure pipe connection outlet hose 102 are both connected to the receiver 2;
the outer layer of the receiver 2 is a shell 207, a gas concentration sensor 204 is fixedly installed in the shell 207, a static pressure pipe hose inlet 203 communicated with a static pressure pipe outlet hose 101 is arranged on the left side of the bottom of the shell 207, a total pressure hole hose inlet 205 communicated with the total pressure pipe outlet hose 102 is arranged on the right side of the bottom of the shell 207, the static pressure pipe hose inlet 203 and the total pressure hole hose inlet 205 are connected to the gas concentration sensor 204 inside the shell 207 in a shared mode, alarm lamps 201 and beepers 202 are respectively arranged on the left side and the right side of the upper end face of the gas concentration sensor 204, the gas concentration sensor 204 is electrically connected with the alarm lamps 201 and the beepers 202, the model of the gas concentration sensor 204 is ZBK-4888, the model of the beepers 202 is TR-9650RA, the model of the alarm lamps 201 is 5051J, and the model of the drilling depth measuring instrument is YSZ 160.
In fig. 1: a layer of protective shell 103 is arranged on the outer layer of the detector 1, so that the detector 1 is prevented from being scratched and rubbed by a coal seam when being placed in a drill hole, the durability and the service life of the detector are improved, the total pressure holes 109 and the static pressure holes 104 are also protected, and dust is prevented from falling into the detector and being deposited.
In fig. 1: detector 1's total pipe 107's inner wall welding has a drilling depth measuring apparatu 106, can in time take notes the degree of depth of transferring when detector 1 is transferred, the content of the gas concentration that corresponds in the different coal seams of accurate positioning increases measuring result's accuracy and practicality, and the setting of outside safety cover 108 also makes drilling depth measuring apparatu 106 can not receive external environment's interference to influence its measurement accuracy.
In fig. 2: the alarm lamp 201 and the buzzer 202 are both arranged on the receiver 2, so that the observation of the measuring personnel can be more timely and accurate, and the error of the measuring record of the gas concentration caused by personal reasons of the detecting personnel is avoided.
In fig. 2: the alarm lamp 201, the buzzer 202 and the gas concentration sensor 204 are connected in series, so that the alarm of the overproof gas concentrations of different coal seams is transmitted more quickly.
The working principle of the invention is as follows: when the gas concentration of the drilled hole needs to be measured, the detector 1 is lowered into the drilled hole through the static pressure pipe connection outlet hose 101 and the total pressure pipe connection outlet hose 102, the detector 1 can be scratched to different degrees due to uneven coal seams in the drilled hole when the detector 1 is lowered, the detector 1 can be protected by the protective shell 103 on the outer layer, friction between the detector 1 and the coal seams in the lowering process is avoided, the durability and the service life of the detector are improved, the lowering standard is different due to different coal seam burial depths, the actual lowering distance is difficult to be specifically controlled through manpower, the measuring result is distorted, the life safety of mining workers is affected, the lowering distance of the detector 1 can be accurately recorded through the drilling depth measuring instrument 106 fixed on the inner wall of the total pressure pipe 107, and the gas concentrations of the coal seams at different depths can be accurately detected, and show on receiver 2, the upper port that static pressure union coupling export hose 101 and total pressure union coupling export hose 102 links to each other with the inside gas concentration sensor 204 of receiver 2, and with warning light 201, bee ware 202 three be electric connection, signal transmission is more swift, because warning light 201 and bee ware 202 are not luminous the sound production in the pit, can make the surveyor see more directly perceived and listen more clear, and when the drilling depth reached very dark degree, this detector still can continue to use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (5)
1. The gas flow testing and alarming device for coal seam mining comprises a detector (1) and a receiver (2), and is characterized in that a protective shell (103) is arranged on the outer side of the detector (1), a static pressure pipe (105) of a tubular structure is sleeved in the protective shell (103), a total pressure pipe (107) of the tubular structure is sleeved in the static pressure pipe (105), a drilling depth measuring instrument (106) is fixedly installed in the total pressure pipe (107), a static pressure pipe connection outlet hose (101) and a total pressure pipe connection outlet hose (102) are arranged at the upper end of the detector (1), and the static pressure pipe connection outlet hose (101) and the total pressure pipe connection outlet hose (102) are connected with the receiver (2);
the outer layer of the receiver (2) is a shell (207), a gas concentration sensor (204) is fixedly mounted in the shell (207), a static pressure tube hose access port (203) communicated with a static pressure tube outlet hose (101) is formed in the left side of the bottom of the shell (207), a total pressure hole hose access port (205) communicated with a total pressure tube outlet hose (102) is formed in the right side of the bottom of the shell (207), the static pressure tube hose access port (203) and the total pressure hole hose access port (205) are connected to the gas concentration sensor (204) inside the shell (207) in a shared mode, alarm lamps (201) and buzzer (202) are arranged on the left side and the right side of the upper end face of the gas concentration sensor (204), and the gas concentration sensor (204) is electrically connected with the alarm lamps (201) and the buzzer (202).
2. The gas flow testing and alarming device for coal seam mining according to claim 1, wherein the wall of the total pressure pipe (107) is provided with static pressure holes (104), and the static pressure holes (104) are uniformly distributed along the total pressure pipe (107) in total of six.
3. The gas flow testing and alarming device for coal seam mining according to claim 1, wherein a total pressure hole (109) is formed in the bottom end of the detector (1), and the total pressure hole (109) penetrates through the protective shell (103), the static pressure pipe (105) and the total pressure pipe (107).
4. The gas flow testing and alarming device for coal seam mining as claimed in claim 1, wherein the drilling depth measuring instrument (106) is fixedly installed on the inner wall of the total pressure pipe (107) through a bolt, and a protective cover (108) is fixedly installed on the outer side of the drilling depth measuring instrument (106) and the inner wall of the total pressure pipe (107).
5. The gas flow testing and alarming device for coal seam mining according to claim 1, wherein the static pressure pipe-connected outlet hose (101) is inserted and matched with the static pressure pipe (105), and the total pressure pipe-connected outlet hose (102) is inserted and matched with the total pressure pipe (107).
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| CN201910581445.6A CN110185497B (en) | 2019-06-29 | 2019-06-29 | Gas flow testing and alarming device for coal seam mining |
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| CN201910581445.6A CN110185497B (en) | 2019-06-29 | 2019-06-29 | Gas flow testing and alarming device for coal seam mining |
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| CN110185497A CN110185497A (en) | 2019-08-30 |
| CN110185497B true CN110185497B (en) | 2021-05-14 |
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| CN204832239U (en) * | 2015-05-22 | 2015-12-02 | 中国神华能源股份有限公司 | Portable gas velocity measuring device |
| CN205314986U (en) * | 2016-01-22 | 2016-06-15 | 华北科技学院 | Experimental device for measure coal seam drilling gas flow |
| CN107035408A (en) * | 2017-05-24 | 2017-08-11 | 西安科技大学 | Coal bed drilling Gas leak position and gas flow, the detection means and method of concentration |
| CN109630100A (en) * | 2018-10-31 | 2019-04-16 | 中国矿业大学 | A kind of automation coal seam permeability test device and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100540848C (en) * | 2006-05-02 | 2009-09-16 | 中国矿业大学 | The prediction coal road is outstanding creeps into discharge method and device thereof continuously |
| CN104121010B (en) * | 2014-06-20 | 2017-03-22 | 重庆迈尔矿山设备开发有限公司 | Method for recording drilling depth of drilling machine and coal mine drilling machine capable of measuring and controlling drill hole operating conditions and surroundings |
| CN104265368B (en) * | 2014-07-31 | 2016-02-24 | 中国矿业大学 | Increase resistance water conservancy diversion and creep into the outstanding discharge method of prediction coal road and device thereof continuously |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202467928U (en) * | 2012-01-18 | 2012-10-03 | 安徽省紫光照明科技有限公司 | Embedded gas detection LED (Light Emitting Diode) alarm lamp |
| CN203587585U (en) * | 2013-12-04 | 2014-05-07 | 柳伟 | Novel methane sensor |
| CN204832239U (en) * | 2015-05-22 | 2015-12-02 | 中国神华能源股份有限公司 | Portable gas velocity measuring device |
| CN205314986U (en) * | 2016-01-22 | 2016-06-15 | 华北科技学院 | Experimental device for measure coal seam drilling gas flow |
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| CN109630100A (en) * | 2018-10-31 | 2019-04-16 | 中国矿业大学 | A kind of automation coal seam permeability test device and method |
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