CN211263180U - Sampling detector for underground laser multi-gas beam tube - Google Patents
Sampling detector for underground laser multi-gas beam tube Download PDFInfo
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- CN211263180U CN211263180U CN201922296121.6U CN201922296121U CN211263180U CN 211263180 U CN211263180 U CN 211263180U CN 201922296121 U CN201922296121 U CN 201922296121U CN 211263180 U CN211263180 U CN 211263180U
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Abstract
A sampling detector for underground laser multi-gas beam tube comprises an ARM main control processing unit (1-1), one end of an air inlet beam tube (1-2) of the system is contacted with sampled gas, the other end of the air inlet beam tube is connected to an input port of a multi-channel electromagnetic valve control module (1-5) after passing through a dust filtration water filter (1-3) and an air extraction execution mechanism in sequence, an air outlet of the multi-channel electromagnetic valve control module (1-5) is communicated with an air exhaust unit (1-9), an output port of the multi-channel electromagnetic valve control module (1-5) is communicated with a laser multi-gas analysis module (1-7), and an ARM main control processing unit (1-1) is electrically connected with the air extraction execution mechanism, the multi-channel electromagnetic valve control module (1-5) and the laser multi-gas analysis module (1-7. The underground real-time detection is realized by adopting a laser detection technology, the precision is high, the consumed time is short, the main control processing unit based on the ARM framework can control a plurality of channels to detect and collect various marking gas data, the real-time judgment is carried out, and the real-time performance, the rapidity and the accuracy of gas analysis are improved.
Description
Technical Field
The utility model relates to a colliery is gaseous monitoring technology field in the pit, concretely relates to many gas beam tubes of laser sampling detector in pit.
Background
In order to ensure the safety of coal mine production and workers and prevent coal mine accidents, according to the regulations of the national coal mine safety administration, when a coal bed which is easy to spontaneously combust is mined, a corresponding fire prevention and extinguishing scheme must be established for inflammable, toxic and harmful gases. In the design of fire prevention and extinguishment, a coal mine is required to be provided with a beam tube fire prevention and extinguishment automatic monitoring system.
In recent years, in the practical application of coal mines, a coal mine beam tube monitoring system does not play an effective monitoring role, and has many aspects for the reason, some reasons are that the coal mine mining depth and the mining intensity are continuously increased in China in the years, so that the mine is dug deeper and deeper, the line for laying the beam tube is longer and longer, the real-time performance of gas analysis extracted from an underground goaf is poor, and the long-distance extraction hardly ensures that the continuous beam tube line has no gas leakage, and the analyzed gas is not necessarily the real gas in the goaf; the other part of the reasons is that the main beam tube control systems in China are mostly aboveground fixed systems, the gas analysis time is long, the system operation is complex, the operation can be carried out only by training of professional technicians, and the real-time performance of system monitoring is poor.
In the current production process, an urgent need exists for a monitoring device, which can directly detect various marked gases in situ and quickly obtain results for analysis and judgment, realize real-time monitoring and judgment of disaster hidden dangers, overcome the defect that the traditional beam tube monitoring system needs to analyze in the well, and improve the real-time performance, rapidity and accuracy of gas analysis.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a sampling detector for underground laser multi-gas beam tubes, which directly analyzes various marking gases in a goaf underground in real time and avoids the problems of inaccurate transmission and gas leakage and detection delay of long-distance beam tubes; the tunable laser spectrum absorption technology is adopted to detect the gas, so that the measurement precision is high, and the time consumption is short; the main control processing unit based on the ARM framework can control a plurality of channels to detect and collect various marked gas concentration values in the goaf, and abnormal data are judged in real time.
In order to achieve the technical purpose, the technical solution of the present invention is as follows:
a sampling detector for underground laser multi-gas beam tubes comprises a controller, a gas collecting component and a gas analyzing component, wherein the gas collecting component is communicated with the gas analyzing component, the gas collecting component and the gas analyzing component are respectively electrically connected with the controller, the controller comprises an ARM main control processing unit, the gas collecting component comprises a dust filtering water filter, an air exhaust executing mechanism, a multi-channel electromagnetic valve control module, an exhaust unit and a plurality of air inlet beam tubes, the gas analyzing component comprises a laser multi-gas analyzing module, one end of each air inlet beam tube is in contact with sampled gas, the other end of each air inlet beam tube is connected to an input port of the multi-channel electromagnetic valve control module after sequentially passing through the dust filtering water filter and the air exhaust executing mechanism, an air outlet of the multi-channel electromagnetic valve control module is communicated with the exhaust unit, and an output port of the multi-channel electromagnetic valve control module is communicated with the laser, the ARM main control processing unit is electrically connected with the air exhaust executing mechanism, the multi-channel electromagnetic valve control module and the laser multi-gas analysis module through cables.
By providing the above scheme, the utility model discloses directly install in the pit, gather in real time and analyze multiple marker gas in the collecting space area, many air intake beam pipes are used for sampling the gas in a plurality of regions, specifically control multichannel solenoid valve control module by ARM main control processing unit and switch the gas pumping pipeline, avoided long distance beam pipe transmission gas leakage inaccuracy, detection delay problem that the monitoring brought on the ground; the laser multi-gas analysis module detects gas by adopting a tunable laser spectrum absorption technology, and has high measurement precision and short time consumption; the main control processing unit based on the ARM framework can control a plurality of channels to detect and collect various marked gas concentration values in the goaf, and detects and judges abnormal data in real time.
The underground laser multi-gas beam tube sampling detector comprises an air exhaust executing mechanism, an air exhaust executing mechanism and an air inlet control mechanism, wherein the air exhaust executing mechanism comprises an explosion-proof vacuum air pump and an explosion-proof vacuum magnetic starter driving module; and a photoelectric isolation module is also connected between the ARM main control processing unit and the explosion-proof vacuum magnetic starter driving module, and comprises an isolation safety barrier. The air exhaust executing mechanism selects the explosion-proof vacuum air exhaust pump with the explosion-proof function to be matched with the explosion-proof vacuum magnetic starter driving module, and the photoelectric isolation module is additionally arranged, so that two processes that a control signal is sent to the explosion-proof vacuum magnetic starter driving module and the explosion-proof vacuum magnetic starter driving module by the ARM main control processing unit to drive the explosion-proof vacuum air exhaust pump to act are ensured, electric sparks are not contacted with gas, meanwhile, the photoelectric isolation module also avoids the risk that the ARM main control processing unit is interfered by the impact of abnormal electric signals, the electric isolation is realized, and the operation is more stable.
According to the sampling detector for the underground laser multi-gas beam tube, a photoelectric isolation driver is connected to a cable between the ARM main control processing unit and the multi-channel solenoid valve control module. Similarly, a similar photoelectric isolation driver is also connected between the ARM main control processing unit and the multi-channel solenoid valve control module, so that the ARM main control processing unit is prevented from being interfered by abnormal electric signals, electric isolation is achieved, and meanwhile, the photoelectric isolation driver is required to have certain load driving capacity and can drive the multi-channel solenoid valve control module to execute switching actions.
The underground laser multi-gas beam tube sampling detector further comprises a pre-detection module, an output port of the multi-channel solenoid valve control module is communicated with the pre-detection module, the pre-detection module is communicated with the laser multi-gas analysis module, and the ARM main control processing unit is respectively electrically connected with the pre-detection module and the laser multi-gas analysis module through cables.
The sampling detector for the underground laser multi-gas beam tube comprises a gas analysis component, a laser multi-gas analysis module and an exhaust unit, wherein the gas analysis component further comprises a sample gas exhaust unit, the laser multi-gas analysis module is communicated with the sample gas exhaust unit, and the sample gas exhaust unit is communicated with the exhaust unit. After the sample gas exhaust unit is communicated with the exhaust unit, the detected gas can be safely treated at the same time.
According to the sampling detector for the underground laser multi-gas beam tube, the ADC acquisition module is connected to the cable between the ARM main control processing unit and the pre-detection module.
The underground laser multi-gas beam tube sampling detector comprises a flow meter, a temperature and humidity acquisition module and a gas pressure acquisition module, wherein the flow meter, the temperature and humidity acquisition module and the gas pressure acquisition module are connected with an ADC acquisition module. The ADC acquisition module is connected with the flowmeter, the temperature and humidity acquisition module and the air pressure acquisition module, and is used for monitoring whether the flow, the temperature and the humidity and the pressure of the gas in the beam tube meet the detection requirements or not, so that the gas parameters of the laser multi-gas analysis module in a normal condition analysis gas circuit are ensured.
According to the sampling detector for the underground laser multi-gas beam tube, an isolation type RS485 communication module is connected to a cable between the ARM main control processing unit and the laser multi-gas analysis module. The isolation type RS485 communication module has an electrical isolation function, can avoid electromagnetic interference, and completely transmits the data of the laser multi-gas analysis module to the ARM main control processing unit.
The utility model discloses for prior art gained beneficial effect lie in:
the utility model provides a be more fit for the many gas beam tubes of laser in pit sampling detector of coal mine goaf monitoring demand that fires, multiple marker gas in the real-time collection analysis goaf, multichannel air inlet beam tube can be used to extract the gas situation of a plurality of regions of analysis, specifically switch the area of bleeding by ARM main control processing unit control multichannel solenoid valve control module, avoid the long distance beam tube transmission gas leakage that the monitoring brought aboveground is inaccurate, detect delay problem; the laser multi-gas analysis module detects gas by adopting a tunable laser spectrum absorption technology, and has high measurement precision and short time consumption; the main control processing unit based on the ARM framework can control a plurality of channels to detect and collect concentration values of various marked gases in the goaf, and detects and judges abnormal data in real time; the isolation modules are added at multiple positions, so that the anti-interference capability of the controller is improved; the air exhaust actuating mechanism selects an explosion-proof vacuum air exhaust pump with an explosion-proof function and an explosion-proof vacuum magnetic starter driving module, so that the contact between electric sparks and flammable gas is avoided; by utilizing the sample gas exhaust unit and the channel pre-pumping exhaust unit, the detected gas can be safely treated at the same time, and gas leakage is prevented.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
fig. 1 is a block diagram of the present embodiment 1.
The components represented by the reference numerals in the figures are:
1-1 parts of ARM main control processing unit, 1-2 parts of air inlet beam tube, 1-3 parts of dust filtering water filter, 1-4 parts of explosion-proof vacuum air pump, 1-41 parts of explosion-proof vacuum magnetic start driving module, 1-42 parts of photoelectric isolation module, 1-5 parts of multi-channel electromagnetic valve control module, 1-51 parts of photoelectric isolation driver, 1-6 parts of pre-detection module, 1-61 parts of ADC acquisition module, 1-7 parts of laser multi-gas analysis module, 1-71 parts of isolation type RS485 communication module, 1-8 parts of sample gas exhaust unit, 1-9 parts of exhaust unit.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.
Example 1
Referring to fig. 1, fig. 1 is a block diagram of a structure of a sampling detector for a downhole laser multi-gas beam tube according to this embodiment 1, and the main structure of the sampling detector is a controller, a gas collection component and a gas analysis component, the gas collection component is communicated with the gas analysis component, and the gas collection component and the gas analysis component are respectively electrically connected with the controller.
Wherein the controller uses an ARM main control processing unit 1-1 based on an ARM framework, the gas collection component comprises a dust filtering water filter 1-3, an air extraction execution mechanism, a multi-channel electromagnetic valve control module 1-5, an exhaust unit 1-9 and a plurality of air inlet beam tubes 1-2, the main functional component of the gas analysis component is a laser multi-gas analysis module 1-7, one end of the air inlet beam tube 1-2 is contacted with sampling gas, the other end of the air inlet beam tube 1-2 is connected to an input port of the multi-channel electromagnetic valve control module 1-5 after passing through the dust filtering water filter 1-3 and the air extraction execution mechanism in sequence, an exhaust port of the multi-channel electromagnetic valve control module 1-5 is communicated with the exhaust unit 1-9, an output port of the multi-channel electromagnetic valve control module 1-5 is communicated with the laser multi-gas analysis module 1-7, the ARM main control processing unit 1-1 is electrically connected with the air exhaust executing mechanism, the multi-channel electromagnetic valve control module 1-5 and the laser multi-gas analysis module 1-7 through cables.
In the embodiment, the controller adopts an ARM main control processing unit 1-1 based on an ARM framework, and the ARM processor is widely used in an embedded system design, has the characteristics of high performance and low power consumption, and can meet the requirement of processing and analyzing gas data parameters; the mining beam tube or pipe cable has certain tensile strength, compressive strength and impact resistance. The utility model discloses a beam tube monitoring system who is currently widely used in pneumatic control of petrochemical industry system, colliery downhole gas monitoring usage, the utility model discloses used 16 way air intake beam tube 1-2, the one end of air intake beam tube 1-2 contacts with the sampling gas, the other end of air intake beam tube 1-2 loops through behind dust filtration water purifier 1-3 and the air exhaust actuating mechanism and is connected to the input port of multichannel solenoid valve control module 1-5, the gas vent and the exhaust unit 1-9 of multichannel solenoid valve control module 1-5 communicate, the delivery outlet of multichannel solenoid valve control module 1-5 communicates with laser many gas analysis module 1-7, the passageway quantity of the input port of multichannel solenoid valve control module 1-5 is 16, with 16 way air intake beam tube 1-2 one-to-one correspondence, the break-make of sampling gas all the way of each passageway control, the number of which can be determined according to the field situation.
In order to ensure the requirements of explosion-proof safety and signal transmission in the underground, an air exhaust actuating mechanism selects an explosion-proof vacuum air pump 1-4 and an explosion-proof vacuum magnetic starter driving module 1-41, and an air inlet beam tube 1-2 is connected with an input port of a multi-channel solenoid valve control module 1-5 after sequentially passing through a dust-filtering water filter 1-3 and the explosion-proof vacuum air pump 1-4; an anti-explosion vacuum magnetic starter driving module 1-41 is connected to a cable between the ARM main control processing unit 1-1 and the anti-explosion vacuum air pump 1-4, and the anti-explosion vacuum magnetic starter driving module 1-41 is added because the ARM main control processing unit 1-1 only outputs a control signal and cannot drive the anti-explosion vacuum air pump 1-4, so that the anti-explosion vacuum magnetic starter driving module 1-41 has enough driving capability on the premise of explosion prevention and can drive the anti-explosion vacuum air pump 1-4 to normally operate; and a photoelectric isolation module 1-42 is also connected between the ARM main control processing unit 1-1 and the explosion-proof vacuum magnetic starter driving module 1-41, and the photoelectric isolation module 1-42 uses an isolation safety barrier. Photoelectric isolation is common in mine explosion-proof equipment, and the isolation function is completed by utilizing the link of 'light' through the conversion of electricity, light and electricity, so that the input and the output are completely isolated electrically.
The air exhaust execution mechanism selects the explosion-proof vacuum air exhaust pump 1-4 with an explosion-proof function to be matched with the explosion-proof vacuum magnetic starter driving module 1-41, and the photoelectric isolation module 1-42 is added, so that the situation that electric sparks are not contacted with gas in two processes of the control signal sent to the explosion-proof vacuum magnetic starter driving module 1-41 and the explosion-proof vacuum magnetic starter driving module 1-41 by the ARM main control processing unit to drive the explosion-proof vacuum air exhaust pump 1-4 to act is ensured, meanwhile, the photoelectric isolation module 1-42 also avoids the risk that the ARM main control processing unit 1-1 is impacted and interfered by abnormal electric signals, electrical isolation is realized, and the operation is more stable.
In the same consideration, the cables between the ARM main control processing unit 1-1 and the multi-channel solenoid valve control module 1-5 are connected with the optoelectronic isolation drivers 1-51 to avoid the ARM main control processing unit from being interfered by abnormal electrical signals and achieve electrical isolation, and meanwhile, the optoelectronic isolation drivers 1-51 are required to have certain load driving capacity and can drive the multi-channel solenoid valve control module 1-5 to execute switching actions. The multi-channel electromagnetic valve control module 1-5 receives a control signal of the ARM main control processing unit 1-1, controls the electromagnetic valve, and enables at most only gas in one path of gas inlet beam tube to enter the pre-detection module 1-6 at any moment, and gas in other paths of gas inlet beam tubes to enter the exhaust unit 1-9 for proper treatment.
The gas analysis component further comprises a pre-detection module 1-6, an output port of the multi-channel solenoid valve control module 1-5 is communicated with the pre-detection module 1-6, the pre-detection module 1-6 is communicated with the laser multi-gas analysis module 1-7, and the ARM main control processing unit 1-1 is electrically connected with the pre-detection module 1-6 and the laser multi-gas analysis module 1-7 through cables.
The gas analysis component further comprises a sample gas exhaust unit 1-8, the laser multi-gas analysis module 1-7 is communicated with the sample gas exhaust unit 1-8, and the sample gas exhaust unit 1-8 is communicated with the exhaust unit 1-9. After the sample gas exhaust unit 1-8 is communicated with the exhaust unit 1-9, the detected gas can be safely treated, the sampled gas passes through the path shown by the arrow in fig. 1, and the waste gas is finally collected to the exhaust unit 1-9 for treatment.
The cable between the ARM main control processing unit 1-1 and the pre-detection module 1-6 is connected with an ADC acquisition module 1-61 and is responsible for receiving signals of the pre-detection module 1-6, the pre-detection module 1-6 comprises a flowmeter, a temperature and humidity acquisition module and an air pressure acquisition module, the ADC acquisition module 1-61 is connected with the flowmeter, the temperature and humidity acquisition module and the air pressure acquisition module, whether the flow, the temperature and the humidity and the pressure of gas in a beam tube meet the detection requirements or not is monitored, and the gas parameters of the laser multi-gas analysis module in a normal condition analysis gas path are guaranteed.
An ADC, i.e., an analog-to-digital converter, is a type of device used to convert a continuous signal in analog form to a discrete signal in digital form. The ADC functions to convert a continuously varying analog signal into a discrete digital signal, and real-world analog signals such as temperature, humidity, pressure, flow, sound, or image, etc. need to be converted into a digital form that is easier to store, process, and transmit. The type selection and application of the flowmeter, the temperature and humidity acquisition module and the air pressure acquisition module can be flexibly selected according to specific scenes, analog signals generated by the sensors such as the flowmeter, the temperature and humidity acquisition module and the air pressure acquisition module are transmitted to the ADC acquisition modules 1-61 to be converted into digital signals, and then the digital signals are transmitted to the ARM main control processing unit 1-1, so that the method is easy to realize for technical personnel in the field, and not only can mature modules in the market be used, but also a circuit can be designed by self.
And an isolated RS485 communication module 1-71 is connected on a cable between the ARM main control processing unit 1-1 and the laser multi-gas analysis module 1-7. The isolation type RS485 communication modules 1-71 are also used for avoiding interference in the data transmission process, the RS485 is widely applied, the transmission distance is dozens of meters to thousands of meters, and the communication in a bus form is supported. The isolation type RS485 communication modules 1-71 adopt a novel RS485 communication protocol, have an electrical isolation function, can avoid electromagnetic interference, and completely transmit the data of the laser multi-gas analysis modules 1-7 to the ARM main control processing unit 1-1.
The laser multi-gas analysis modules 1-7 adopt a tunable laser spectrum absorption technology, are not influenced by background gas, and compared with the traditional spectrum absorption technology, the laser spectrum adopts a single-line absorption spectrum technology, has good monochromaticity, and the laser wavelength scanning range only covers the absorption spectrum of the gas to be measured, thereby avoiding cross interference in gas analysis and ensuring the accuracy of measurement; the gas concentration is determined by the ratio of the second harmonic signal of the projection light intensity to the direct current signal when the laser spectrum is adopted to analyze the gas components, so that when the laser encounters dust or window dirt in the transmission process, the second harmonic signal and the direct current signal can be reduced in the same ratio, and the measurement of the gas concentration cannot be influenced; the influence of temperature and pressure on measurement is automatically corrected, and for some measured process gases, the temperature and pressure change is large, so that the amplitude and the shape of a second harmonic signal waveform are correspondingly changed, and the measurement accuracy is influenced. The tunable laser spectrum absorption technology can receive temperature and pressure signals input from the outside, perform temperature and pressure compensation calculation, and automatically correct the influence of temperature and pressure changes on gas concentration measurement.
The working principle and the control method of the downhole laser multi-gas beam tube sampling detector are described in the following with reference to fig. 1: the ARM main control processing unit 1-1 transmits signals to the photoelectric isolation modules 1-42 through the I/O pins for photoelectric isolation of the signals, and the signals are subjected to photoelectric isolation and then drive the driving modules 1-41 of the explosion-proof vacuum magnetic starter so as to drive the explosion-proof vacuum air pump 1-4; after the explosion-proof vacuum air pump 1-4 is started, gas in a goaf enters a dust filtering water filter 1-3 through a 16-path gas inlet beam pipe 1-2, dust and water vapor in the gas are filtered and then enter the explosion-proof vacuum air pump 1-4, the ARM main control processing unit 1-1 selects a certain path of gas to enter a pre-detection module 1-6 and a laser multi-gas analysis module 1-7 through controlling a multi-channel solenoid valve control module 1-5, and other gases are discharged through an exhaust unit 1-9. The path of the sampled gas is shown by the arrows in fig. 1.
In order to ensure the accuracy and stability of the gas analysis of the laser multi-gas analysis module 1-7, a pre-detection module 1-6 is arranged, the pre-detection module 1-6 comprises a flowmeter, a temperature and humidity acquisition module and a gas pressure acquisition module, the flow, humidity and pressure of the gas entering the laser multi-gas analysis module 1-7 are ensured to be in reasonable ranges, and the signals of the pre-detection module 1-6 are converted into digital signals through an ADC acquisition module 1-61 and transmitted to an ARM main control processing unit 1-1; the real-time gas concentration analyzed by the laser multi-gas analysis module 1-7 is transmitted to the ARM main control processing unit 1-1 through the isolation type RS485 communication module 1-71.
In specific implementation, when the isolated RS485 communication module 1-71 and the laser multi-gas analysis module 1-7 are connected to exchange data information, in order to suppress the influence of electromagnetic signals of large-scale equipment in a mine on communication quality and enhance the anti-interference capability of a controller on external interference, an EMC anti-interference circuit can be added at an RS485 interface for suppression; as a preferred embodiment, in addition to connecting a conventional optoelectronic isolator, an admm 1201 isolator module may also be connected to an RX/TX communication pin of the ARM main control processing unit 1-1, and the admm 1201 replaces the conventional optoelectronic isolator, which not only reduces the system power consumption and simplifies the system structure, but also increases the stability of the communication between the controller and the laser multi-gas analysis module and improves the performance of the controller.
According to the scheme of the embodiment, the underground laser multi-gas beam tube sampling detector more suitable for the coal mine goaf ignition monitoring requirement is provided, the conditions of various marked gases in a plurality of goaf areas can be collected and analyzed in real time, the ARM main control processing unit 1-1 controls the multi-channel electromagnetic valve control module 1-5 to switch the pumping areas, and the problems of inaccurate long-distance beam tube transmission gas leakage and detection delay caused by over-the-pit monitoring are avoided; the laser multi-gas analysis modules 1-7 adopt a tunable laser spectrum absorption technology to detect gas, so that the measurement precision is high and the time consumption is short; the ARM main control processing unit 1-1 based on the ARM framework can control a plurality of channels to detect and collect concentration values of various marked gases in a goaf, and detects and judges abnormal data in real time; the isolation modules are added at multiple positions, so that the anti-interference capability of the controller is improved; the air exhaust actuating mechanism selects an anti-explosion vacuum air exhaust pump 1-4 with an anti-explosion function and an anti-explosion vacuum magnetic starter driving module 1-41, so that the contact of electric sparks and flammable gas is avoided; by using the sample gas exhaust units 1-8 and the exhaust units 1-9, the detected gas can be safely treated at the same time, and gas leakage is avoided.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The underground laser multi-gas beam tube sampling detector comprises a controller, a gas collecting component and a gas analyzing component, wherein the gas collecting component is communicated with the gas analyzing component, and the gas collecting component and the gas analyzing component are respectively electrically connected with the controller, and is characterized in that the controller comprises an ARM main control processing unit (1-1), the gas collecting component comprises a dust filtering water filter (1-3), an air exhaust executing mechanism, a multi-channel solenoid valve control module (1-5), an exhaust unit (1-9) and a plurality of air inlet beam tubes (1-2), the gas analyzing component comprises a laser multi-gas analyzing module (1-7), one end of each air inlet beam tube (1-2) is in contact with sampling gas, and the other end of each air inlet beam tube (1-2) is connected to the multi-channel solenoid valve control module after sequentially passing through the dust filtering water filter (1-3) and the air exhaust executing mechanism The gas exhaust port of the multi-channel electromagnetic valve control module (1-5) is communicated with the gas exhaust unit (1-9), the output port of the multi-channel electromagnetic valve control module (1-5) is communicated with the laser multi-gas analysis module (1-7), and the ARM main control processing unit (1-1) is electrically connected with the gas exhaust executing mechanism, the multi-channel electromagnetic valve control module (1-5) and the laser multi-gas analysis module (1-7) through cables.
2. The downhole laser multi-gas beam tube sampling detector as claimed in claim 1, wherein the air pumping actuator comprises an explosion-proof vacuum air pump (1-4) and an explosion-proof vacuum magnetic starter driving module (1-41), the air intake beam tube (1-2) is connected with an input port of the multi-channel solenoid valve control module (1-5) after passing through the dust-filtering water filter (1-3) and the explosion-proof vacuum air pump (1-4) in sequence, and the explosion-proof vacuum magnetic starter driving module (1-41) is connected on a cable between the ARM main control processing unit (1-1) and the explosion-proof vacuum air pump (1-4).
3. The downhole laser multi-gas beam tube sampling detector as claimed in claim 2, wherein a photoelectric isolation module (1-42) is further connected between the ARM main control processing unit (1-1) and the explosion-proof vacuum magnetic starter driving module (1-41), and the photoelectric isolation module (1-42) comprises an isolation safety barrier.
4. The sampling detector of downhole laser multi-gas beam tube according to claim 1, wherein a photoelectric isolation driver (1-51) is connected to a cable between the ARM main control processing unit (1-1) and the multi-channel solenoid valve control module (1-5).
5. The sampling detector of downhole laser multi-gas beam tube according to claim 1, wherein the gas analysis component further comprises a pre-detection module (1-6), the output port of the multi-channel solenoid valve control module (1-5) is communicated with the pre-detection module (1-6), the pre-detection module (1-6) is communicated with the laser multi-gas analysis module (1-7), and the ARM main control processing unit (1-1) is electrically connected with the pre-detection module (1-6) and the laser multi-gas analysis module (1-7) respectively through cables.
6. A downhole laser multi-gas beam tube sampling detector according to claim 5, wherein the gas analysis component further comprises a sample gas exhaust unit (1-8), the laser multi-gas analysis module (1-7) is in communication with the sample gas exhaust unit (1-8), and the sample gas exhaust unit (1-8) is in communication with the exhaust unit (1-9).
7. The sampling detector of downhole laser multi-gas beam tube according to claim 5, wherein the cable between the ARM main control processing unit (1-1) and the pre-detection module (1-6) is connected with an ADC acquisition module (1-61).
8. The downhole laser multi-gas beam tube sampling detector according to claim 7, wherein the pre-detection module (1-6) comprises a flow meter, a temperature and humidity acquisition module and a gas pressure acquisition module, and the flow meter, the temperature and humidity acquisition module and the gas pressure acquisition module are connected with the ADC acquisition module (1-61).
9. The downhole laser multi-gas beam tube sampling detector as claimed in claim 5, wherein an isolated RS485 communication module (1-71) is connected to a cable between the ARM main control processing unit (1-1) and the laser multi-gas analysis module (1-7).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117420053A (en) * | 2023-12-18 | 2024-01-19 | 安徽中科智泰光电测控科技有限公司 | Underground environment monitoring system based on spectrum beam tube monitoring and optical fiber temperature measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117420053A (en) * | 2023-12-18 | 2024-01-19 | 安徽中科智泰光电测控科技有限公司 | Underground environment monitoring system based on spectrum beam tube monitoring and optical fiber temperature measurement |
| CN117420053B (en) * | 2023-12-18 | 2024-03-12 | 安徽中科智泰光电测控科技有限公司 | Underground environment monitoring system based on spectrum beam tube monitoring and optical fiber temperature measurement |
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