Full-laser multi-path multi-gas fire monitoring device

Abstract

The utility model discloses a full-laser multi-path multi-gas fire monitoring device which comprises a sucking pump, a laser sensor, a plurality of beam tubes and a beam tube control valve group, the beam tube control valve group comprises a plurality of control valves, each control valve is provided with a gas inlet pipe communicated with the corresponding beam tube, and the gas inlet pipe is communicated with the corresponding beam tube. The exhaust end of each control valve is communicated with an exhaust pipe; the air inlet end of each beam tube is arranged in the corresponding goaf, and the other end of each beam tube is communicated with the air inlet tube of the corresponding control valve; the air inlet end of the air pump is communicated with the exhaust pipe of the beam tube control valve group, and the exhaust end of the air pump is communicated with the laser sensor through a pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal spontaneous combustion monitoring of goaf, working face, closed area etc. BACKGROUND

[0002] With mine reorganization and years of continuous mining, a large number of goafs have been formed in the coal production underground. Various types of mine fires occur from time to time, causing a large amount of direct or indirect economic losses. In order to prevent and control the fire in the mine, a full laser multi-path gas fire monitoring device is researched to timely monitor the goaf coal spontaneous combustion index gas underground, and to gain valuable time for escape and prevention of coal spontaneous combustion.

[0003] At present, the traditional detection methods for the goaf, working face and other environmental areas in the coal mine underground mainly have two methods: the first method is to use electrochemical, infrared and other detection methods, which are easily affected by water vapor and gas cross interference during the detection process, and are not conducive to the accuracy of data detection. With the increase of monitoring points, the number of equipment will also increase. The second method is to use manual sampling and ground chromatographic detection method, which can obtain accurate detection data, but the sampling frequency is limited every day. The time interval from gas sampling to gas detection is several hours at the fastest, and some even need to wait for the next day to see the data results of the previous day, which cannot guarantee the real-time effectiveness of the data. If the number of detection points increases, the manpower and material resources will also greatly increase.

[0004] To solve the above problems, the applicant considers that the goaf, working face or closed area is subjected to air extraction, and the gas in the wavelength range is detected and analyzed by the laser sensor, the corresponding gas concentration is detected, and the data detection result is displayed. However, the mine distribution is complex, how to simultaneously and quickly detect multiple regions, and avoid air cross interference in each region affecting the detection accuracy is a problem to be solved. SUMMARY

[0005] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a full laser multi-path multi-gas fire monitoring device to solve the problems of low detection efficiency, gas cross interference and low detection accuracy in the existing mine area fire detection method.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The application discloses a full-laser multi-path multi-gas fire monitoring device, which comprises an air suction pump, laser sensors, a plurality of beam tubes and a beam tube control valve group, wherein the beam tube control valve group comprises a plurality of control valves, each of which is provided with an air inlet pipe connected with a corresponding beam tube, and the air outlet ends of the control valves are connected with an air outlet pipe; the air inlet ends of the beam tubes are arranged in corresponding goaf areas, and the other ends are connected with the air inlet pipes of the corresponding control valves; the air inlet end of the air suction pump is connected with the air outlet pipe of the beam tube control valve group, and the air outlet end is connected with the laser sensors through a pipeline.

[0008] Further, the multi-path dust filtering devices and multi-path water filtering devices are arranged in the middle portions of the beam tubes.

[0009] Further, an air valve is arranged on the air outlet pipe.

[0010] Further, an air flow buffer chamber and a micro air pump are arranged between the air suction pump and the laser sensors, the air flow buffer chamber is provided with a main air outlet and a secondary air outlet, and the air inlet of the micro air pump is connected with the secondary air outlet of the air flow buffer chamber.

[0011] Further, the micro air pump is a small flow air pump, and a steam-water separator is arranged between the micro air pump and the laser sensor, and an air inlet end of the steam-water separator is connected with the micro air pump. In this way, heat is generated after a long time of re-suction of the micro air pump, and steam is formed, and the steam-water separator arranged in front of the laser sensor can effectively separate the steam in the air to be detected, so as to avoid affecting the detection accuracy.

[0012] Further, a collection valve is further arranged on the connecting pipeline between the secondary exhaust port of the air flow buffer chamber and the micro air pump. In this way, the collection valve can be opened or closed according to the detection requirement, so as to control the flow and the entering channel of the gas.

[0013] Further, the laser sensor comprises a laser analysis module and a data display module, and a gas exhaust pipeline is further arranged on the laser analysis module. In this way, the laser analysis module arranged in the laser sensor is mainly connected with the pipeline, and the introduced gas is detected and analyzed, and the data display module is connected with the laser analysis module, receives the detection result, and displays the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a connection structure schematic view of the full laser multi-path multi-gas fire monitoring device in the embodiment. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0016] It should be noted that similar reference numerals and letters refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed during use, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0017] As Figure 1As shown, the full laser multi-path multi-gas fire monitoring device provided by the embodiment comprises an air pump 6 and a laser sensor 11, a plurality of beam tubes 1 and a beam tube control valve group 4, the beam tube control valve group 4 comprises a plurality of control valves, each control valve has an air inlet pipe connected with a corresponding beam tube 1, and the air outlet ends of the control valves are all connected with an air outlet pipe 41, and an air valve 5 is arranged on the air outlet pipe 41; the air inlet end of each beam tube 1 is arranged in a corresponding goaf, and the other end is connected with the air inlet pipe of the corresponding control valve; the air inlet end of the air pump 6 is connected with the air outlet pipe 41 of the beam tube control valve group 4, and the air outlet end is connected with the laser sensor 11 through a pipeline, and the laser sensor 11 detects and analyzes the air pumped by the air pump 6, and displays the detection result. In this way, each beam tube 1 corresponds to a goaf or a sealed area, and each beam tube 1 is connected with one of the beam tube control valves, so that when the air pump 6 is turned on, one of the beam tube control valves is opened, and the air in the goaf corresponding to the control valve connected with the control valve can be sucked into the air pump 6 through the beam tube 1, and then enters the laser sensor 11 from the air outlet end of the air pump 6, and the gas concentration in the goaf is detected and analyzed by the laser sensor 11. In the detection system, each beam tube 1 corresponds to a different area, and each beam tube 1 is controlled independently, so that there is no air cross interference, and the accuracy of the laser sensor 11 can be improved. At the same time, by continuously opening or closing different control valves, air can be sucked and detected in multiple areas, air sampling is fast and convenient, efficiency is high, and all detections are detected by one laser sensor 11, detection equipment is more simplified, and result checking is more convenient and fast.

[0018] In specific applications, the opening and closing time and sequence of each control valve in the beam tube control valve group 4 are set according to the pumping distance of each beam tube 1 and the air pump 6, so as to realize fire monitoring of the goaf corresponding to different beam tubes 1 within a certain period of time. The laser sensor 11 can also be connected with an alarm, which alarms after detecting the corresponding fire.

[0019] There is a certain amount of dust and water vapor in the air in the goaf or the sealed space, and if the air with dust and water vapor enters the laser sensor 11 for detection, it will affect the detection result and the service life of the sensor. Therefore, a plurality of dust filtering devices 2 and a plurality of water filtering devices 3 are arranged in the middle of each beam tube 1. In this way, by arranging the plurality of dust filtering devices 2 and the plurality of water filtering devices 3, the air in each beam tube 1 can be filtered to remove dust and water, so as to prevent water vapor from entering the inside of the device, prevent damage to the equipment in the device, and affect the accuracy of the laser sensor 11.

[0020] When the air in the area corresponding to the end of each bundle tube 1 is pumped at intervals, the air will enter the exhaust pipe 41 in a certain period of time. If there is still residual air in the exhaust pipe 41, it will affect the detection result of the air pumping of the following bundle tube 1, and a long interval is required to exhaust the air in the previous bundle tube 1 before pumping the space in the area corresponding to the end of the next bundle tube 1. Based on this, an air flow buffer chamber 7 and a micro air pump 9 are further arranged between the air pump 6 and the laser sensor 11. The air flow buffer chamber 7 is provided with a main exhaust port and a secondary exhaust port, and the air inlet of the micro air pump 9 is in communication with the secondary exhaust port of the air flow buffer chamber 7. In this way, after the air in the bundle tube 1 enters the air flow buffer chamber 7 for buffering and a certain amount of air is exhausted through the main exhaust port, the exhaust volume entering the laser sensor 11 can be effectively controlled, and the cross interference of the gas accumulation in different bundle tubes 1 can be prevented, thereby affecting the gas concentration. That is, after a part of the residual air is exhausted through the air flow buffer chamber 7, the air introduced by the current bundle tube 1 is pumped to the laser sensor 11 for detection through the micro air pump 9, thereby effectively improving the detection accuracy.

[0021] Further, the micro air pump 9 is a small-flow air pump, and a steam-water separator 10 is arranged between the micro air pump 9 and the laser sensor 11, and the air inlet end of the steam-water separator 10 is connected with the micro air pump 9. In this way, after the micro air pump 9 is pumped again, heat will be generated after a long time, and a certain amount of water vapor will be formed. The steam-water separator 10 arranged in front of the laser sensor 11 can effectively separate the water vapor in the air to be detected, thereby avoiding affecting the detection accuracy.

[0022] Further, a collection valve 8 is further arranged on the connecting pipeline between the secondary exhaust port of the air flow buffer chamber 7 and the micro air pump 9. In this way, the collection valve 8 can be opened or closed according to the detection needs, thereby controlling the flow and the entering channel of the gas.

[0023] Further, the laser sensor 11 comprises a laser analysis module and a data display module, and a gas exhaust pipeline is further arranged on the laser analysis module. In this way, the laser analysis module arranged in the laser sensor 11 is mainly connected with the pipeline to detect and analyze the introduced gas, and the data display module is connected with the laser analysis module to receive the detection result and display the detection result.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the technical solutions. Those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and should be covered in the scope of the claims of the present application.

Claims

1. A full laser multi-path multi-gas fire monitoring device comprising a gas suction pump and a laser sensor, characterized in that, The application also comprises a plurality of beam pipes and a beam pipe control valve group, the beam pipe control valve group comprising a plurality of control valves, each of which has an inlet pipe connected with a corresponding beam pipe, and the exhaust end of each control valve is connected with an exhaust pipe; the inlet end of each beam pipe is arranged in a corresponding goaf, and the other end is connected with the inlet pipe of the corresponding control valve; the inlet end of the air pump is connected with the exhaust pipe of the beam pipe control valve group, and the exhaust end is connected with the laser sensor through a pipeline.

2. The all-laser multi-path multi-gas fire detection device according to claim 1, wherein, A plurality of dust filtering devices and a plurality of water filtering devices are arranged in the middle of each beam pipe.

3. The all-laser multi-path multi-gas fire detection device according to claim 1, wherein, An air valve is arranged on the exhaust pipe.

4. The all-laser multi-path multi-gas fire detection device according to claim 1 or 2 or 3, characterized in that, An air flow buffer chamber and a micro air pump are arranged between the air pump and the laser sensor, the air flow buffer chamber is provided with a main exhaust port and a secondary exhaust port, and the inlet of the micro air pump is connected with the secondary exhaust port of the air flow buffer chamber.

5. The all-laser multi-path multi-gas fire detection device of claim 4, wherein, The micro air pump is a small-flow air pump, and a steam-water separator is arranged between the micro air pump and the laser sensor, and the inlet end of the steam-water separator is connected with the micro air pump.

6. The all-laser multi-path multi-gas fire detection device of claim 5, wherein, A collection valve is arranged on the connecting pipeline between the secondary exhaust port of the air flow buffer chamber and the micro air pump.

7. The all-laser multi-path multi-gas fire detection device according to claim 1 or 2 or 3 or 5 or 6, characterized in that, The laser sensor comprises a laser analysis module and a data display module, and is provided with a gas exhaust pipeline.

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