CN219084885U - Gas concentration and air leakage detection device based on airtight connection roadway - Google Patents
Gas concentration and air leakage detection device based on airtight connection roadway Download PDFInfo
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- CN219084885U CN219084885U CN202223395016.6U CN202223395016U CN219084885U CN 219084885 U CN219084885 U CN 219084885U CN 202223395016 U CN202223395016 U CN 202223395016U CN 219084885 U CN219084885 U CN 219084885U
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Abstract
The utility model discloses a gas concentration and air leakage detection device based on a communication roadway seal, which comprises a shell, a first water-vapor separator, a second water-vapor separator, a first air pump, a second air pump, a bidirectional gas concentration sensor and a data reader, wherein the first air pump is connected with the first water-vapor separator; the distance that the other end of the first air duct stretches into the goaf is different from the distance that the other end of the second air duct stretches into the goaf; the bidirectional gas concentration sensor is used for detecting various components in the flowing gas and corresponding concentration values thereof, and the data reader is used for reading detection data of the bidirectional gas concentration sensor; the first air pump is used for sucking the gas around the other end of the second air duct, dehydrating the gas through the second water-vapor separator and transmitting the dehydrated gas to the two-way gas concentration sensor for gas concentration detection; the second air pump is used for sucking the gas around the other end of the first air duct, and the gas is dehydrated by the first water-vapor separator and then transmitted to the two-way gas concentration sensor for gas concentration detection.
Description
Technical Field
The utility model relates to a gas concentration and air leakage detection device, in particular to a gas concentration and air leakage detection device based on a connecting roadway seal, and belongs to the technical field of goaf coal spontaneous combustion disaster early warning.
Background
At present, natural ignition of some coal mine goafs is frequent, and in order to prevent coal spontaneous combustion of the coal mine goafs in advance, the gas concentration in the sealed goafs needs to be detected. The conventional detection method is to pre-embed a beam tube in the roadway of the working face, and then extract gas in the goaf for detection through the beam tube after the beam tube is buried in the goaf along with stoping. However, some coal mines have the characteristics of large burial depth and high ground stress, so that the phenomenon of air leakage in the goaf (namely, external air can enter the goaf) can be caused by the caving of the top plate of the goaf, and the detection accuracy of the concentration of internal gas is seriously affected. In addition, some goafs can have ponding, and the gas humidity who leads to taking out increases, also can influence the accuracy that gas concentration detected.
At present, the Chinese patent with publication number of CN210570840U provides coal mine goaf closed environment monitoring and early warning integrated inspection equipment, which can monitor deformation conditions in the goaf, but does not consider the influence condition of gas humidity on gas concentration detection; the Chinese patent with publication number of CN214741475U discloses a goaf closed zone monitoring device which can realize real-time monitoring and is convenient for later maintenance, but can not judge whether air leakage exists in a goaf, and further if the goaf is subjected to air leakage, the detected gas concentration result is inaccurate.
In summary, the existing goaf monitoring device does not consider the influence of accumulated water in the goaf on gas concentration monitoring, and lacks detection of air leakage condition in the goaf. Therefore, how to provide a new device can reduce the influence of the ponding in the goaf on the gas concentration detection, can judge whether the air leakage condition exists in the goaf at the same time, and then improve the detection accuracy of the gas concentration in the goaf, and is one of the research directions in the industry.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a gas concentration and air leakage detection device based on a closed connecting roadway, which can reduce the influence of accumulated water in a goaf on gas concentration detection, judge whether air leakage exists in the goaf, and further improve the detection accuracy of the gas concentration in the goaf.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a gas concentration and air leakage detection device based on airtight in communication roadway, includes casing, first steam separator, second steam separator, first aspiration pump, second aspiration pump, two-way gas concentration sensor and data read ware;
the shell, the first water-vapor separator and the second water-vapor separator are all arranged in a communication roadway;
the first water-vapor separator and the second water-vapor separator are respectively positioned at two sides of the shell, one end of the first air duct is communicated with one port of the first water-vapor separator, and the other end of the first air duct passes through the connecting roadway to extend into the goaf in a sealing manner; one end of the second air duct is communicated with one port of the second water-vapor separator, and the other end of the second air duct passes through the connecting roadway to extend into the goaf in a sealing way; the distance that the other end of the first air duct stretches into the goaf is different from the distance that the other end of the second air duct stretches into the goaf;
the first air pump, the second air pump, the two-way gas concentration sensor and the data reader are all arranged in the shell, the air inlet of the first air pump is communicated with one port of the two-way gas concentration sensor through a pipeline, the air outlet of the first air pump is communicated with the other port of the first water-vapor separator through a pipeline, the air inlet of the second air pump is communicated with the other port of the two-way gas concentration sensor through a pipeline, and the air outlet of the second air pump is communicated with the other port of the second water-vapor separator through a pipeline; the bidirectional gas concentration sensor is used for detecting various components in the flowing gas and corresponding concentration values thereof, and the data reader is connected with the bidirectional gas concentration sensor and is used for reading detection data of the bidirectional gas concentration sensor; the first air pump is used for sucking the gas around the other end of the second air duct into the second air duct, dehydrating the gas through the second water-vapor separator and transmitting the dehydrated gas to the two-way gas concentration sensor for gas concentration detection; the second air pump is used for sucking the gas around the other end of the first air duct into the first air duct, and transmitting the gas to the two-way gas concentration sensor for gas concentration detection after the gas is dehydrated by the first water-vapor separator.
Further, the shell is a metal shell. The metal shell has better impact deformation preventing effect.
Further, valves are arranged on the first air duct, the second air duct, the pipeline between the first water-vapor separator and the first air pump and the pipeline between the second water-vapor separator and the second air pump. By additionally arranging the valve, the valve can be closed when extraction detection is not performed, and gas in the goaf is prevented from entering the shell.
Further, the parts of the first air duct and the second air duct extending into the goaf are additionally provided with steel ring reinforcement protection outside. The deformation rate of the two air guide pipes can be reduced when the ground stress in the goaf is large by additionally arranging the steel ring reinforcement protection, so that the smooth detection is ensured.
Further, the data reader is equipped with a display for displaying the read detection data. And the display is arranged, so that after detection is finished, the concentration values of each gas at two positions of the goaf can be directly obtained, and subsequent analysis and treatment are facilitated.
Further, the first water-vapor separator and the second water-vapor separator are respectively provided with a movable support, and the movable supports are arranged to facilitate movement during installation.
Further, the first air duct and the second air duct are both stainless steel pipes, and the first air duct and the second air duct can bear negative pressure of 20 KPa. Thus ensuring the smooth extraction.
Further, the first air pump and the second air pump are both electric.
Further, the data reader is connected with a bidirectional gas concentration sensor through an optical fiber.
Compared with the prior art, the utility model adopts a combination mode of the first water-vapor separator, the second water-vapor separator, the first air pump, the second air pump, the bidirectional gas concentration sensor and the data reader, and has the following advantages:
1. according to the utility model, the first water-vapor separator and the second water-vapor separator are arranged, if water accumulation exists near the sampling point, the water accumulation can be extracted firstly, then the gas near the sampling point is extracted, the components and the concentration are detected after the water and the vapor are separated and dehydrated, if no water accumulation exists near the sampling point, the water accumulation is dehydrated through the water and the vapor separation, the humidity of the gas is reduced, and then the detection is carried out, so that the water bursting accident caused by the water accumulation in the goaf can be prevented, the influence of the water vapor in the goaf on the detection result can be effectively restrained, and the detection accuracy of each gas is improved.
2. According to the utility model, the distances of the first air duct and the second air duct extending into the goaf are different, the gas components with different sampling points and the corresponding concentration data thereof can be obtained in the 'long-short' mode, and the goaf coal spontaneous combustion risk can be judged, and meanwhile, whether the goaf has an air leakage phenomenon can be judged by comparing the components and the concentration data, so that a worker can take subsequent plugging measures in time, and the risk of coal spontaneous combustion in the goaf is reduced.
Drawings
FIG. 1 is a schematic layout of the present utility model;
fig. 2 is a schematic structural view of the present utility model.
In the figure: 1-No. 1 air extraction sampling point, 2-No. 2 air extraction sampling point, 3-gas concentration and air leakage detection device, 4-shell, 5-two-way gas concentration sensor, 6-first air pump, 7-second air pump, 8-optical fiber, 9-data reader, 10-first water vapor separator, 11-second water vapor separator, 12-valve and 13-second air duct.
Detailed Description
The present utility model will be further described below.
As shown in fig. 2, the utility model comprises a shell 4, a first water-vapor separator 10, a second water-vapor separator 11, a first air pump 6, a second air pump 7, a bidirectional gas concentration sensor 5 and a data reader 9;
the shell 4, the first water-vapor separator 10 and the second water-vapor separator 11 are all arranged in a communication roadway; the housing 4 is a metal housing. The metal shell has better impact deformation preventing effect; the first water-vapor separator 10 and the second water-vapor separator 11 are respectively provided with a movable bracket, and the movable brackets are arranged so as to facilitate the movement during the installation.
The first water-vapor separator 10 and the second water-vapor separator 11 are respectively arranged at two sides of the shell 4, one end of the first air duct is communicated with one port of the first water-vapor separator 10, and the other end of the first air duct passes through a connecting roadway to extend into the goaf in a sealing way; one end of the second air duct 13 is communicated with one port of the second water-vapor separator 11, and the other end of the second air duct 13 passes through a connecting roadway to extend into the goaf in a sealing manner; the distance that the other end of the first air duct stretches into the goaf is different from the distance that the other end of the second air duct stretches into the goaf; the first air duct and the second air duct are both stainless steel pipes, and the first air duct and the second air duct can bear negative pressure of 20 KPa. Thus ensuring the smooth extraction.
The first air pump 6, the second air pump 7, the bidirectional gas concentration sensor 5 and the data reader 9 are all arranged in the shell 4, and the first air pump 6 and the second air pump 7 are all electric; the air inlet of the first air pump 6 is communicated with one port of the bidirectional gas concentration sensor 5 through a pipeline, the air outlet of the first air pump 6 is communicated with the other port of the first water-vapor separator 10 through a pipeline, the air inlet of the second air pump 7 is communicated with the other port of the bidirectional gas concentration sensor 5 through a pipeline, and the air outlet of the second air pump 7 is communicated with the other port of the second water-vapor separator 11 through a pipeline; the bidirectional gas concentration sensor 5 is used for detecting various components in the flowing gas and corresponding concentration values thereof, and the data reader 9 is connected with the bidirectional gas concentration sensor 5 through an optical fiber 8 and is used for reading detection data of the bidirectional gas concentration sensor 5; the data reader 9 is equipped with a display for displaying the read detection data. And the display is arranged, so that after detection is finished, the concentration values of each gas at two positions of the goaf can be directly obtained, and subsequent analysis and treatment are facilitated. The first air pump 6 is used for sucking the gas around the other end of the second air duct 13 into the second air duct 13, and transmitting the dehydrated gas to the bidirectional gas concentration sensor 5 for gas concentration detection after the dehydration of the second water-vapor separator 11; the second air pump 7 is used for sucking the gas around the other end of the first air duct into the first air duct, and transmitting the dehydrated gas to the bidirectional gas concentration sensor 5 for gas concentration detection after the dehydration of the first water-vapor separator 10.
As an improvement of the utility model, the first air duct, the second air duct 13, the pipeline between the first water-vapor separator 10 and the first air pump 6 and the pipeline between the second water-vapor separator 11 and the second air pump 7 are all provided with valves 12. By adding the valve 12, the valve 12 can be closed when extraction detection is not performed, and gas in the goaf can be prevented from entering the shell.
As another improvement of the utility model, the parts of the first air duct and the second air duct extending into the goaf are additionally provided with steel ring reinforcement protection. The deformation rate of the two air guide pipes can be reduced when the ground stress in the goaf is large by additionally arranging the steel ring reinforcement protection, so that the smooth detection is ensured.
The casing 4, the water-vapor separator, the air pump, the bidirectional gas concentration sensor 5 and the data reader 9 are all existing devices or apparatuses, and can be purchased through the market, wherein the bidirectional gas concentration sensor 5 can be provided with two ports, gas flows into the bidirectional gas concentration sensor 5 from any one port and flows out from the other port, and the bidirectional gas concentration sensor 5 can detect components flowing through the gas and concentration values of the components. The water-vapor separator can keep water in the inflowing water-vapor mixture in the separator and enable gas to be discharged out of the separator, so that the water-vapor separation effect is realized.
Before working, the utility model is firstly arranged in a connecting roadway corresponding to a goaf to be detected, then a No. 1 extraction sampling point 1 and a No. 2 extraction sampling point 2 are respectively arranged in the goaf, wherein the No. 1 extraction sampling point 1 is arranged at a position which is 5m away from the connecting roadway closure, the No. 2 extraction sampling point 2 is arranged at a position which is 15m away from the connecting roadway closure, as shown in figure 2, the other end of a first air duct passes through the connecting roadway closure and extends to the No. 1 extraction sampling point 1, the other end of a second air duct 13 passes through the connecting roadway closure and extends to the No. 2 extraction sampling point 2, the layout of the utility model is completed, when the working is started, a second extraction pump 7 is started, and gas and moisture around the No. 1 extraction sampling point 1 enter a first water-vapor separator 10 through the first air duct, after the gas is dehydrated by the first water-vapor separator 10, and sequentially passes through the first extraction pump 6, the bidirectional gas concentration sensor 5, the second extraction pump 7 and the second water-vapor separation/11 to be discharged to an extraction sampling point No. 2, by observing the water retention condition in the first water-vapor separator 10, if the water separated by the first water-vapor separator 10 is more, the water accumulation exists at the position, at this time, the extraction is continuously performed for a period of time, and when the water separated by the inside of the first water-vapor separator 10 is less, at this time, various components and corresponding concentration values in the gas flowing through the extraction sampling point No. 1 detected by the bidirectional gas concentration sensor 5 are read by the data reader 9 and displayed by the display; stopping the second extraction pump 7 after the completion, starting the first extraction pump 6 to work, enabling gas and moisture around the No. 2 extraction sampling point 2 to enter the second water-vapor separator 11 through the second air duct 13, enabling the water-vapor separation process to be the same as the process of the No. 1 extraction sampling point 1, and obtaining various components and corresponding concentration values of the gas flowing through the No. 2 extraction sampling point 2 after the treatment; because the 1 st extraction sampling point is different with the inclosed distance of tie respectively with the 2 nd extraction sampling point, through the gas composition and the concentration value that correspond of analysis contrast two extraction sampling points, can know whether the goaf exists the condition of air leakage (under the condition of not taking place the air leakage, the nitrogen content that different positions gathered in the same goaf is basically the same, in case the goaf is somewhere take place the air leakage, then outside air can get into the goaf and lead to the nitrogen content around this air leakage position to rise, can know whether there is the air leakage through the nitrogen content condition of comparing different positions), make the staff can in time take subsequent shutoff measure, reduce the goaf and take place the risk of coal spontaneous combustion.
The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (10)
1. The gas concentration and air leakage detection device based on the airtight of the connecting roadway is characterized by comprising a shell, a first water-vapor separator, a second water-vapor separator, a first air pump, a second air pump, a bidirectional gas concentration sensor and a data reader;
the shell, the first water-vapor separator and the second water-vapor separator are all arranged in a communication roadway;
the first water-vapor separator and the second water-vapor separator are respectively positioned at two sides of the shell, one end of the first air duct is communicated with one port of the first water-vapor separator, and the other end of the first air duct passes through the connecting roadway to extend into the goaf in a sealing manner; one end of the second air duct is communicated with one port of the second water-vapor separator, and the other end of the second air duct passes through the connecting roadway to extend into the goaf in a sealing way; the distance that the other end of the first air duct stretches into the goaf is different from the distance that the other end of the second air duct stretches into the goaf;
the first air pump, the second air pump, the two-way gas concentration sensor and the data reader are all arranged in the shell, the air inlet of the first air pump is communicated with one port of the two-way gas concentration sensor through a pipeline, the air outlet of the first air pump is communicated with the other port of the first water-vapor separator through a pipeline, the air inlet of the second air pump is communicated with the other port of the two-way gas concentration sensor through a pipeline, and the air outlet of the second air pump is communicated with the other port of the second water-vapor separator through a pipeline; the bidirectional gas concentration sensor is used for detecting various components in the flowing gas and corresponding concentration values thereof, and the data reader is connected with the bidirectional gas concentration sensor and is used for reading detection data of the bidirectional gas concentration sensor; the first air pump is used for sucking the gas around the other end of the second air duct into the second air duct, dehydrating the gas through the second water-vapor separator and transmitting the dehydrated gas to the two-way gas concentration sensor for gas concentration detection; the second air pump is used for sucking the gas around the other end of the first air duct into the first air duct, and transmitting the gas to the two-way gas concentration sensor for gas concentration detection after the gas is dehydrated by the first water-vapor separator.
2. The gas concentration and air leakage detection device based on the sealing of a communication roadway of claim 1, wherein the shell is a metal shell.
3. The device for detecting the concentration of gas and the leakage of air based on the airtight connection roadway as claimed in claim 1, wherein valves are arranged on the first air duct, the second air duct, the pipeline between the first water-vapor separator and the first air pump, and the pipeline between the second water-vapor separator and the second air pump.
4. The device for detecting the concentration of gas and the leakage of air based on the airtight connection roadway as claimed in claim 1, wherein the parts of the first air duct and the second air duct extending into the goaf are additionally provided with steel ring reinforcement protection.
5. The device for detecting the concentration of gas and the leakage of air based on the sealing of a communication roadway according to claim 1, wherein the data reader is provided with a display for displaying the read detection data.
6. The gas concentration and air leakage detection device based on the sealing of the connecting roadway according to claim 1, wherein the first water-vapor separator and the second water-vapor separator are respectively provided with a movable bracket.
7. The device for detecting the concentration of gas and the leakage of air based on the airtight connection roadway as claimed in claim 1, wherein the first air duct and the second air duct are both stainless steel pipes.
8. The device for detecting the concentration of gas and the leakage of air based on the airtight connection roadway as claimed in claim 7, wherein the first air duct and the second air duct can bear negative pressure of 20 KPa.
9. The device for detecting the concentration of gas and the leakage of air based on the airtight connection roadway as claimed in claim 1, wherein the first air pump and the second air pump are both electric.
10. The gas concentration and air leakage detection device based on the communication roadway closure according to claim 1, wherein the data reader is connected with a bidirectional gas concentration sensor through an optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223395016.6U CN219084885U (en) | 2022-12-19 | 2022-12-19 | Gas concentration and air leakage detection device based on airtight connection roadway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223395016.6U CN219084885U (en) | 2022-12-19 | 2022-12-19 | Gas concentration and air leakage detection device based on airtight connection roadway |
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| CN219084885U true CN219084885U (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223395016.6U Active CN219084885U (en) | 2022-12-19 | 2022-12-19 | Gas concentration and air leakage detection device based on airtight connection roadway |
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| CN (1) | CN219084885U (en) |
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- 2022-12-19 CN CN202223395016.6U patent/CN219084885U/en active Active
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