CN114739872A - Intrinsic safety explosion-proof type photoacoustic spectrum dust detection device - Google Patents
Intrinsic safety explosion-proof type photoacoustic spectrum dust detection device Download PDFInfo
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- CN114739872A CN114739872A CN202210327864.9A CN202210327864A CN114739872A CN 114739872 A CN114739872 A CN 114739872A CN 202210327864 A CN202210327864 A CN 202210327864A CN 114739872 A CN114739872 A CN 114739872A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
- G01N2021/1704—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases
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Abstract
The invention discloses an intrinsic safety explosion-proof type photoacoustic spectrum dust detection device which comprises an optical detection dust-proof box and a power supply explosion-proof box arranged on the optical detection dust-proof box, wherein the optical detection dust-proof box is provided with a light source; the power supply explosion-proof box is characterized in that a first conversion circuit, a second conversion circuit and a third conversion circuit which are independently distributed are arranged in the power supply explosion-proof box, an optical detection plate is arranged in the optical detection dust-proof box, and a resonant cavity is arranged on the optical detection plate. According to the invention, three conversion lines are adopted to respectively meet three different voltage working environments of an above-mine electric locomotive, an below-mine electric locomotive and an electric storage electric locomotive, the detection approaches are various, the application range is wider, the optical detection dust-proof box is simple and convenient to use and easy to operate for the under-mine dust gas, the detection effect is quicker and more accurate, the power supply explosion-proof box can avoid sudden change and electric spark of the output current, further the explosion danger is generated, and the safety stability of the detection environment and the accurate reliability of the detection data are ensured.
Description
Technical Field
The invention relates to the technical field of mine intrinsic safety explosion prevention, in particular to an intrinsic safety explosion-proof type photoacoustic spectrum dust detection device.
Background
At present, dust detection under many mines at home and abroad adopts a film changer to collect dust to realize the purpose of detecting the dust, and the traditional film changer is used for changing films to detect the changed films. Because the supply voltage in the mine is different with the supply voltage in the mine, so current dust detection device can only realize on the mine or use alone under the mine mostly to unable adaptation is because the complexity of environment under the mine, in case the circuit part of detection case produces the spark under this kind of environment, will explode, can't guarantee the security of detection ring border. Most dust detection device is too big-size, and is unable portable, thereby miniaturized dust detection device can't guarantee the steady state in the testing process again because its size problem leads to the detected data inaccurate. Most of detection devices can not realize the function of patrolling and examining under the ore deposit, can not realize the dust that detects multiple position under the ore deposit. Therefore, a plurality of scholars at home and abroad begin to research and design the underground optical detection device and make certain progress. However, the optical detection device is not seen to be applied to the field of dust detection of underground mines.
Disclosure of Invention
The invention aims to solve the technical problem of providing an intrinsically safe explosion-proof photoacoustic spectroscopy dust detection device which is safe, accurate and wide in application range.
In order to solve the technical problems, the invention adopts the following technical scheme: an intrinsically safe explosion-proof photoacoustic spectroscopy dust detection device comprises an optical detection dust-proof box and a power supply explosion-proof box arranged on the optical detection dust-proof box;
the power supply explosion-proof box is characterized in that a first conversion circuit, a second conversion circuit and a third conversion circuit which are independently distributed are arranged inside the power supply explosion-proof box, a first air inlet and a first air outlet are installed on the optical detection dust-proof box, an optical detection plate is installed inside the optical detection dust-proof box, a resonant cavity is installed on the optical detection plate, and the first air inlet and the first air outlet are respectively communicated to the resonant cavity.
Furthermore, a first main power interface and a power connector are respectively installed on two sides of the box body of the power supply explosion-proof box, a second main power interface is installed on one side of the box body of the optical detection dust-proof box, the first main power interface and the second main power interface can be respectively connected to external power supply equipment, and the power connector is connected with the second main power interface.
Further, a conversion power supply group and a safety grid group are installed at the inside interval of the power supply explosion-proof box, a switch group is installed at the top of the power supply explosion-proof box, the conversion power supply group comprises a first conversion power supply, a second conversion power supply and a third conversion power supply which are distributed at intervals, the safety grid group comprises a first safety grid, a second safety grid and a third safety grid which are distributed at intervals, and the switch group comprises a first switch, a second switch and a third switch.
Further, the first bus power interface is connected to the input end of the first switching power supply through a wire, the output end of the first switching power supply is connected to the input end of the first safety barrier through a wire, the output end of the first safety barrier is connected to the input end of the first switch through a wire, and the output end of the first switch is connected to the power connection port through a wire to form the first switching line;
the first total power supply interface is connected to the input end of the second switching power supply through a lead, the output end of the second switching power supply is connected to the input end of the second safety barrier through a lead, the output end of the second safety barrier is connected to the input end of the second switch through a lead, and the output end of the second switch is connected to the power supply connecting port through a lead to form a second switching circuit;
the first total power interface is connected to the input end of the third switching power supply through a lead, the output end of the third switching power supply is connected to the input end of the third safety barrier through a lead, the output end of the third safety barrier is connected to the input end of the third switch through a lead, and the output end of the third switch is connected to the power connection port through a lead to form the third switching circuit.
Furthermore, two ends of one side of the resonant cavity are respectively communicated with an air inlet path and an air outlet path, and two ends of the other side of the resonant cavity are respectively communicated with a second air inlet and a second air outlet;
in a working state, the dust gas to be detected enters from the first gas inlet, is input to the second gas inlet through the gas inlet path, enters the resonant cavity through the second gas inlet, is output to the gas outlet path from the second gas outlet, and is finally output from the first gas outlet communicated with the gas outlet path.
Furthermore, the resonant cavity is fixed on the optical detection board through a support frame, a microphone and a laser are installed on the resonant cavity, a first reflector, a second reflector, a signal generation circuit and a phase-locking acquisition card are respectively installed on the optical detection board and located on one side of the support frame, and the first reflector and the second reflector are respectively arranged between the signal generation circuit, the phase-locking acquisition card and the resonant cavity.
Furthermore, a computer end is installed on the front face of the box body of the optical detection dust-proof box, and the output end of the second main power supply interface is respectively connected to the computer end, the laser, the signal generating circuit and the input end of the phase-locked acquisition card through wires.
Furthermore, the output end of the signal generating circuit is respectively connected to the input ends of the phase-locked acquisition card and the laser through data lines, and the output end of the phase-locked acquisition card is respectively connected to the input ends of the computer end and the microphone through data lines;
in a working state, a rectangular wave signal sent by the signal generating circuit is transmitted to a signal receiving end of the laser, the laser receives the signal and emits laser to the first reflector, the first reflector reflects the laser to the second reflector, and finally the laser is reflected to the resonant cavity in a concentrated mode through the second reflector.
Furthermore, spring dampers are respectively installed at four corners of the bottom end of the optical detection plate, and the tail ends of the spring dampers are connected to the bottom surface of the inner wall of the optical detection dustproof box.
Furthermore, the optical detection dust-proof box is installed on an electric locomotive, and a storage battery pack arranged in the electric locomotive can respectively supply power to the optical detection dust-proof box and the power supply explosion-proof box.
The invention has the beneficial effects that:
according to the invention, three conversion lines are adopted to respectively meet three different voltage working environments of an above-mine electric locomotive, an below-mine electric locomotive and an electric storage electric locomotive, the detection approaches are various, the application range is wider, the optical detection dust-proof box is simple and convenient to use and easy to operate for the under-mine dust gas, the detection effect is quicker and more accurate, the power supply explosion-proof box can avoid sudden change and electric spark of the output current, further the explosion danger is generated, and the safety stability of the detection environment and the accurate reliability of the detection data are ensured.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the overall structure of the power supply explosion-proof box according to an embodiment of the invention.
Fig. 3 is a schematic diagram of an internal structure of a power explosion-proof box according to an embodiment of the invention.
Fig. 4 is a schematic view of the overall structure of the optical inspection dust-proof box according to an embodiment of the present invention.
Fig. 5 is a schematic view of an internal structure of an optical inspection dust-proof box according to an embodiment of the present invention.
FIG. 6 is a schematic diagram of a resonant cavity structure according to an embodiment of the present invention.
Fig. 7 is a schematic view of the bottom structure of the optical detection plate according to an embodiment of the present invention.
Fig. 8 is an assembly view of an embodiment of the present invention.
Fig. 9 is a schematic diagram of three power supply modes of the power supply explosion-proof box according to an embodiment of the invention.
Fig. 10 is a schematic diagram of the operation of the optical inspection dust-proof box according to an embodiment of the present invention.
The components in the drawings are labeled as follows: 1. a power supply explosion-proof box; 2. an optical detection dust-proof box; 3. a first switching power supply; 4. a second switching power supply; 5. a third switching power supply; 6. a first safety barrier; 7. a second safety barrier; 8. a third safety barrier; 9. a first switch; 10. a second switch; 11. a third switch; 12. a first total power interface; 13. a power supply connector; 14. a second main power interface; 15. a computer terminal; 16. a first air inlet; 17. a first air outlet; 18. an optical detection plate; 19. a support frame; 20. a resonant cavity; 21. a microphone; 22. a laser; 23. a first reflector; 24. a second reflector; 25. a signal generating circuit; 26. a phase-locked acquisition card; 27. an air inlet path; 28. discharging the gas circuit; 29. a second air inlet; 30. a second air outlet; 31. a spring damper; 32. an electric locomotive; 33. and (5) a storage battery pack.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, "a plurality" means two or more. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
See fig. 1-10.
The invention relates to an intrinsic safety explosion-proof type photoacoustic spectrum dust detection device, which comprises an optical detection dust-proof box 2 and a power supply explosion-proof box 1 arranged on the optical detection dust-proof box 2;
the power supply explosion-proof box 1 is internally provided with a first conversion circuit, a second conversion circuit and a third conversion circuit which are independently distributed, the optical detection dust-proof box 2 is provided with a first air inlet 16 and a first air outlet 17, the optical detection dust-proof box 2 is internally provided with an optical detection plate 18, the optical detection plate 18 is provided with a resonant cavity 20, and the first air inlet 16 and the first air outlet 17 are respectively communicated to the resonant cavity 20.
According to the invention, three conversion lines are adopted to respectively meet three different voltage working environments of an above-mine electric locomotive, an below-mine electric locomotive and an electric storage electric locomotive, the detection approaches are various, the application range is wider, the optical detection dust-proof box is simple and convenient to use and easy to operate for the under-mine dust gas, the detection effect is quicker and more accurate, the power supply explosion-proof box can avoid sudden change and electric spark of the output current, further the explosion danger is generated, and the safety stability of the detection environment and the accurate reliability of the detection data are ensured.
In an embodiment, a first main power interface 12 and a power connector 13 are respectively installed on two sides of the box body of the power explosion-proof box 1, a second main power interface 14 is installed on one side of the box body of the optical detection dust-proof box 2, the first main power interface 12 and the second main power interface 14 are respectively connectable to an external power supply device, and the power connector 13 is connected with the second main power interface 14. By the design, the device is suitable for different detection working environments of an on-mine 220V alternating current power supply, an off-mine 127V alternating current power supply and a 110V electric storage electric locomotive, and the three different power supply modes, namely the on-mine power supply, the off-mine power supply and the electric storage electric locomotive supply, provide multiple use ways for the device, and improve the application range.
In one embodiment, a column of switching power supply sets and a column of safety barrier sets are installed at intervals inside the power supply explosion-proof box 1, a column of switch sets is installed at the top of the power supply explosion-proof box 1, the switching power supply sets comprise first switching power supplies 3, second switching power supplies 4 and third switching power supplies 5 which are distributed at intervals, the safety barrier sets comprise first safety barriers 6, second safety barriers 7 and third safety barriers 8 which are distributed at intervals, and the switch sets comprise first switches 9, second switches 10 and third switches 11. Due to the design, as the power supply voltage on the mine is standard 220V alternating current and the power supply voltage under the mine is standard 127V alternating current, any two conversion power supplies can be utilized to convert the 220V alternating current or the 127V alternating current transmitted by the first main power supply interface 12 into 12V direct current, so that the mine can be used simultaneously, meanwhile, in order to adapt to the environment which is explosive under the mine, the safety barrier is arranged behind each conversion power supply, the current output by the conversion power supplies can be limited in a stable and safe range, the current of the optical detection dust-proof box 2 in a dangerous area is prevented from jumping, the dust explosion under the mine caused by electric sparks in the working process is prevented, and the power supply explosion-proof box 1 is covered on the outside, so that the safety and the reliability of the detection work are improved.
In an embodiment, the first total power interface 12 is connected to an input terminal of the first switching power supply 3 through a wire, an output terminal of the first switching power supply 3 is connected to an input terminal of the first safety barrier 6 through a wire, an output terminal of the first safety barrier 6 is connected to an input terminal of the first switch 9 through a wire, and an output terminal of the first switch 9 is connected to the power connection port 13 through a wire, so as to form the first switching line;
the first total power interface 12 is connected to the input end of the second switching power supply 4 through a wire, the output end of the second switching power supply 4 is connected to the input end of the second safety barrier 7 through a wire, the output end of the second safety barrier 7 is connected to the input end of the second switch 10 through a wire, and the output end of the second switch 10 is connected to the power connection port 13 through a wire, so as to form the second switching line;
the first total power interface 12 is connected to the input terminal of the third switching power supply 5 through a wire, the output terminal of the third switching power supply 5 is connected to the input terminal of the third safety barrier 8 through a wire, the output terminal of the third safety barrier 8 is connected to the input terminal of the third switch 11 through a wire, and the output terminal of the third switch 11 is connected to the power connection port 13 through a wire, so as to form the third switching line. According to the design, three mutually independent and non-interfering power supply circuits are arranged in the power supply explosion-proof box 1 and connected between external power supply equipment and the optical detection dust-proof box 2, each switch is respectively corresponding to different power supply circuits, any circuit is selected according to different power supply environments before the device is started, and the optical detection dust-proof box 2 can realize synchronous working on and off the mine.
In one embodiment, two ends of one side of the resonant cavity 20 are respectively communicated with an air inlet path 27 and an air outlet path 28, and two ends of the other side of the resonant cavity 20 are respectively communicated with a second air inlet 29 and a second air outlet 30;
in a working state, the dust gas to be detected enters from the first air inlet 16, is input to the second air inlet 29 through the air inlet path 27, enters the resonant cavity 20 through the second air inlet 29, is output to the air outlet path 28 from the second air outlet 30, and is finally output from the first air outlet 17 communicated with the air outlet path 28. Design like this, first air inlet 16 and first gas outlet 17 all are loudspeaker column structure, and outer gas circuit is wide, and interior gas circuit is narrow, makes the dust gas get into resonant cavity 20 is more smooth rapid, simultaneously, because whole testing process all needs stable operational environment, any slight vibrations condition can all make the detection light path take place the deviation, thereby lead to the testing result to change, so according to unique operational environment under the ore deposit, adopt the wind regime under the ore deposit, and non-adoption can make the device produce the aspiration pump of vibrations, reduce the energy consumption of whole detection ring border, the steady state of maintaining detection ring border, improve the accurate degree of detection data.
In an embodiment, the resonant cavity 20 is fixed on the optical detection board 18 via a supporting frame 19, a microphone 21 and a laser 22 are installed on the resonant cavity 20, a first reflecting mirror 23, a second reflecting mirror 24, a signal generation circuit 25 and a phase-lock acquisition card 26 are respectively installed on the optical detection board 18 and located at one side of the supporting frame 19, and the first reflecting mirror 23 and the second reflecting mirror 24 are respectively interposed between the signal generation circuit 25, the phase-lock acquisition card 26 and the resonant cavity 20. Design like this, to the dust gas under the ore deposit, optical detection dust-proof box 2 not only uses portably, easily operates, and detection effect is more accurate fast moreover.
In one embodiment, a computer terminal 15 is installed on the front surface of the optical detection dust-proof box 2, and the output terminal of the second main power interface 14 is connected to the computer terminal 15, the laser 22, the signal generating circuit 25, and the input terminal of the phase-locked acquisition card 26 through wires. By the design, the second main power interface 14 supplies power to the whole power unit inside the optical detection dust-proof box 2, the optical detection dust-proof box 2 is connected to the remote intelligent equipment through the computer terminal 15, the output of detection data is compared, and the operation is intelligent and fast.
In one embodiment, the output terminal of the signal generating circuit 25 is connected to the input terminals of the phase-locked acquisition card 26 and the laser 22 via data lines, and the output terminal of the phase-locked acquisition card 26 is connected to the input terminals of the computer terminal 15 and the microphone 21 via data lines;
in an operating state, a rectangular wave signal emitted by the signal generating circuit 25 is transmitted to a signal receiving end of the laser 22, the laser 22 receives the signal and emits laser to the first reflecting mirror 23, the first reflecting mirror 23 reflects the laser to the second reflecting mirror 24, and finally the laser is reflected to the resonant cavity 20 through the second reflecting mirror 24 in a concentrated manner. By the design, when dust gas to be detected enters the resonant cavity 20 through the gas path, the microphone 21 transmits a weak signal generated in the resonant cavity 20 to a signal input end of the phase-locked acquisition card 26, meanwhile, a reference signal generated by the signal generation circuit 25 is transmitted to the phase-locked acquisition card 26, the phase-locked acquisition card 26 simultaneously inputs acquired data into the computer end 15, the computer end 15 obtains final detection data through data analysis and comparison, the whole detection process is simplified, integrated fast operation is realized, and work efficiency is improved.
In one embodiment, spring dampers 31 are respectively installed at four corners of the bottom end of the optical detection plate 18, and the ends of the spring dampers 31 are connected to the bottom surface of the inner wall of the optical detection dust-proof box 2. Due to the design, the working environment under the mine is relatively complex, so when the device works under the mine, vibration can be inevitably generated, however, the slight vibration can cause instability of the detection environment, and further drives the detection light path to change and deviate, and finally the accuracy of detection data is reduced, and the spring damper 31 can ensure the stability and reliability of the detection environment.
In an embodiment, the optical detection dust box 2 is mounted on an electric locomotive 32, and a storage battery 33 arranged in the electric locomotive 32 can respectively supply power to the optical detection dust box 2 and the power supply explosion-proof box 1. By the design, the electric locomotive 32 is powered by the storage battery pack 33, the inspection function of the device is realized, the detection work efficiency is improved, and the device is stable in operation, convenient and quick.
It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this disclosure.
Claims (10)
1. The utility model provides an intrinsic safety explosion-proof type optoacoustic spectrum dust detection device which characterized in that: comprises an optical detection dustproof box (2) and a power supply explosion-proof box (1) arranged on the optical detection dustproof box (2);
the power supply explosion-proof box is characterized in that a first conversion circuit, a second conversion circuit and a third conversion circuit which are independently distributed are arranged inside the power supply explosion-proof box (1), a first air inlet (16) and a first air outlet (17) are installed on the optical detection dust-proof box (2), an optical detection plate (18) is installed inside the optical detection dust-proof box (2), a resonant cavity (20) is installed on the optical detection plate (18), and the first air inlet (16) and the first air outlet (17) are communicated to the resonant cavity (20) respectively.
2. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 1, wherein: first total power source interface (12) and power connector (13) are installed respectively to the box both sides of power explosion-proof case (1), the total power source interface (14) of second is installed to box one side of optical detection dust-proof case (2), first total power source interface (12) and the total power source interface (14) of second are connectable to external power supply unit respectively, just power connector (13) with the total power source interface (14) of second is connected.
3. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 2, wherein: a switching power supply group and a safety barrier group are installed at the inside interval of power explosion-proof box (1), a switch group is installed at the top of power explosion-proof box (1), switching power supply group includes interval distribution's first switching power supply (3), second switching power supply (4) and third switching power supply (5), safety barrier group includes interval distribution's first safety barrier (6), second safety barrier (7) and third safety barrier (8), switch group includes first switch (9), second switch (10) and third switch (11).
4. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 3, wherein: the first total power interface (12) is connected to an input end of the first switching power supply (3) through a lead, an output end of the first switching power supply (3) is connected to an input end of the first safety barrier (6) through a lead, an output end of the first safety barrier (6) is connected to an input end of the first switch (9) through a lead, and an output end of the first switch (9) is connected to the power supply connecting port (13) through a lead to form a first switching line;
the first total power interface (12) is connected to the input end of the second switching power supply (4) through a lead, the output end of the second switching power supply (4) is connected to the input end of the second safety barrier (7) through a lead, the output end of the second safety barrier (7) is connected to the input end of the second switch (10) through a lead, and the output end of the second switch (10) is connected to the power supply connecting port (13) through a lead, so that a second switching line is formed;
the first total power interface (12) is connected to the input end of the third switching power supply (5) through a lead, the output end of the third switching power supply (5) is connected to the input end of the third safety barrier (8) through a lead, the output end of the third safety barrier (8) is connected to the input end of the third switch (11) through a lead, and the output end of the third switch (11) is connected to the power supply connecting port (13) through a lead to form the third switching line.
5. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 2, wherein: the two ends of one side of the resonant cavity (20) are respectively communicated with an air inlet path (27) and an air outlet path (28), and the two ends of the other side of the resonant cavity (20) are respectively communicated with a second air inlet (29) and a second air outlet (30);
in a working state, the dust gas to be detected enters from the first air inlet (16), is input to the second air inlet (29) through the air inlet channel (27), enters the resonant cavity (20) through the second air inlet (29), is output to the air outlet channel (28) from the second air outlet (30), and is finally output from the first air outlet (17) communicated with the air outlet channel (28).
6. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 5, wherein: the optical detection device is characterized in that the resonant cavity (20) is fixed on the optical detection plate (18) through a support frame (19), a microphone (21) and a laser (22) are installed on the resonant cavity (20), a first reflector (23), a second reflector (24), a signal generation circuit (25) and a phase-locking acquisition card (26) are installed on the optical detection plate (18) and located on one side of the support frame (19), and the first reflector (23) and the second reflector (24) are arranged between the signal generation circuit (25), the phase-locking acquisition card (26) and the resonant cavity (20).
7. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 6, wherein: the optical detection dust-proof box (2) is characterized in that a computer end (15) is installed on the front face of the box body, and the output end of the second main power interface (14) is connected to the input end of the computer end (15), the laser (22), the signal generating circuit (25) and the phase-locking acquisition card (26) through wires respectively.
8. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 7, wherein: the output end of the signal generating circuit (25) is respectively connected to the input ends of a phase-locked acquisition card (26) and a laser (22) through data lines, and the output end of the phase-locked acquisition card (26) is respectively connected to the input ends of the computer end (15) and the microphone (21) through data lines;
in an operating state, a rectangular wave signal emitted by the signal generating circuit (25) is transmitted to a signal receiving end of the laser (22), the laser (22) receives the signal and emits laser to the first reflecting mirror (23), the first reflecting mirror (23) reflects the laser to the second reflecting mirror (24), and finally the laser is reflected to the resonant cavity (20) in a concentrated mode through the second reflecting mirror (24).
9. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 1, wherein: spring dampers (31) are respectively installed at four corners of the bottom end of the optical detection plate (18), and the tail ends of the spring dampers (31) are connected to the bottom surface of the inner wall of the optical detection dustproof box (2).
10. The intrinsically safe explosion-proof photoacoustic spectroscopic dust detection device of claim 1, wherein: the optical detection dust-proof box (2) is arranged on an electric locomotive (32), and a storage battery pack (33) arranged in the electric locomotive (32) can respectively supply power to the optical detection dust-proof box (2) and the power supply explosion-proof box (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327864.9A CN114739872A (en) | 2022-03-29 | 2022-03-29 | Intrinsic safety explosion-proof type photoacoustic spectrum dust detection device |
| PCT/CN2022/087119 WO2023184602A1 (en) | 2022-03-29 | 2022-04-15 | Intrinsically safe and explosion-proof photoacoustic spectroscopy dust measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210327864.9A CN114739872A (en) | 2022-03-29 | 2022-03-29 | Intrinsic safety explosion-proof type photoacoustic spectrum dust detection device |
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|---|---|
| CN114739872A true CN114739872A (en) | 2022-07-12 |
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|---|---|---|---|
| CN202210327864.9A Pending CN114739872A (en) | 2022-03-29 | 2022-03-29 | Intrinsic safety explosion-proof type photoacoustic spectrum dust detection device |
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|---|---|
| CN (1) | CN114739872A (en) |
| WO (1) | WO2023184602A1 (en) |
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| WO2023184602A1 (en) | 2023-10-05 |
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