Integrated drying tube group device for optical gas detector and use method of integrated drying tube group device

Abstract

The invention relates to an integrated drying tube stack device for an optical gas detector and a use method of the integrated drying tube stack device. The integrated drying tube stack device comprises a shell, a drying tube, a carbon dioxide filter tube, a gas path switching mechanism and a gas filtering effect detection mechanism. And the gas path switching mechanism realizes switching of gas flow directions through a three-way ball valve, so that carbon dioxide can be selectively filtered when the concentrations of methane and carbon dioxide are measured, and tedious operations of replacing a drying pipe and inserting and pulling a rubber pipe are avoided. The gas filtering effect detection mechanism comprises a moisture monitoring sensor and a carbon dioxide monitoring sensor and is used for detecting whether the gas flow reaches the standard or not in real time and ensuring the accuracy of a measurement result. The using method comprises the steps of medicine state inspection, airtightness inspection, gas path switching, gas concentration measurement and the like. By simplifying the operation and optimizing the design, the measuring efficiency of the optical gas detector can be improved, the working intensity of gas detectors is reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine gas prevention and control, and relates to an integrated drying tube group device for an optical gas detector and a use method thereof. Background Art

[0002] Current regulations, such as the "Coal Mine Safety Regulations," clearly stipulate that mines must establish inspection systems for methane, carbon dioxide, and other harmful gases, with clear regulations on inspection scope, staffing, and inspection frequency. Therefore, gas inspections are a crucial foundational task for production mines. These inspections require professional inspectors to conduct regular, scheduled inspections of methane, carbon dioxide, and other gas concentrations underground, following a defined route throughout each shift. This workload is both substantial and repetitive.

[0003] When inspectors use optical tungsten detectors to measure the concentrations of gases such as methane and carbon dioxide underground, the following method is generally used, as moisture and carbon dioxide significantly affect the measured methane concentration: when measuring methane concentration, the underground air is passed through drying tubes that filter carbon dioxide and moisture, and then enters the optical tungsten detector's air chamber for measurement; when measuring carbon dioxide concentration, the underground air only needs to pass through the drying tube that filters moisture, which means that the carbon dioxide in the gas is not filtered out; finally, the concentration of carbon dioxide is calculated by measuring the concentration of the underground mixed gas. Therefore, in the operation process of measuring carbon dioxide concentration, it is necessary to re-insert and unplug the rubber hoses between the drying tube groups or replace the drying tube that only filters moisture to change the direction of the airflow in the drying tube group. This process increases the complexity of the concentration measurement cycle and the workload of the tungsten inspectors. The cumbersome operation steps also increase the randomness and resistance of the testers, thus affecting the accuracy of the measurement results. Therefore, when measuring the concentrations of methane and carbon dioxide, there is an urgent need for a device that can optimize the structure of the drying tube group to simplify the operation. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to solve the above problems and provide an integrated drying tube group device for an optical tile inspection instrument and a method of use thereof. There is no need to replace the drying tube or repeatedly plug and unplug the hose between tube groups, which can greatly simplify the measurement process and improve the measurement efficiency.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An integrated drying tube assembly device for an optical tile inspection instrument comprises a housing, a drying tube disposed within the housing, a carbon dioxide filter tube, and an air path conversion mechanism; the housing is provided with a first air inlet, a second air inlet, and an air outlet; the air path conversion mechanism is disposed between the drying tube and the carbon dioxide filter tube and simultaneously connects the drying tube, the carbon dioxide filter tube, and the second air inlet; one end of the carbon dioxide filter tube is connected to the first air inlet, and one end of the drying tube is connected to the air outlet;

[0007] During detection, the air outlet is connected to the optical tile detector, and the air path conversion mechanism is switched so that the detection air flow enters the carbon dioxide filter tube from the first air inlet to filter the carbon dioxide, and then enters the drying tube through the air path conversion mechanism to remove moisture, or the detection air flow enters the drying tube directly from the second air inlet through the air path conversion mechanism to remove moisture, and finally enters the optical tile detector from the air outlet.

[0008] Furthermore, the gas path conversion mechanism includes a conversion switch, a conversion label and a three-way ball valve; the conversion switch is arranged outside the housing and passes through the housing to be connected to the three-way ball valve arranged inside the housing, and the three-way ball valve is controlled by the conversion switch; the three interfaces of the three-way ball valve are respectively connected to the drying tube, the carbon dioxide filter tube and the second air inlet;

[0009] The conversion label includes a first label and a second label arranged at 90 degrees on the outer surface of the shell. The first label and the second label are both located around the conversion switch. When the conversion switch is turned to point to the first label, the three-way ball valve is connected to the carbon dioxide filter tube. When the conversion switch is turned to point to the second label, the three-way ball valve is correspondingly connected to the second air inlet.

[0010] Furthermore, it also includes a gas filtration effect detection mechanism, which includes a moisture monitoring sensor, a carbon dioxide monitoring sensor, a monitoring module, and a sensor indicator light;

[0011] The moisture monitoring sensor is arranged at the outlet end of the drying tube, and the carbon dioxide monitoring sensor is arranged at the outlet end of the carbon dioxide filter tube; the sensor indicator light is arranged on the shell, and the moisture monitoring sensor, carbon dioxide monitoring sensor, and sensor indicator light are all connected to the detection module. The detection module controls the sensor indicator light to display whether the moisture and carbon dioxide in the gas meet the standards based on the moisture and carbon dioxide detection data.

[0012] Furthermore, the drying tube and the carbon dioxide filter tube both include a tube body and a cover plate; the cover plate is connected to the tube body by threads, and both ends of the tube body are sealed by the cover plate; the tube body of the drying tube is filled with a drug for filtering water vapor, generally calcium chloride or color-changing silica gel can be used; the tube body of the carbon dioxide filter tube is filled with a drug for filtering carbon dioxide, generally soda lime can be used.

[0013] Furthermore, a cover plate at one end of the tube body is located outside the shell, and the medicine can be replaced by removing the cover plate.

[0014] Furthermore, two transparent windows are provided on the shell, and the two transparent windows correspond to the drying tube and the carbon dioxide filter tube respectively, and are used to observe the color changes of the medicines in the drying tube and the carbon dioxide filter tube.

[0015] A method for using the integrated drying tube assembly device for an optical tile inspection instrument as described above comprises the following steps:

[0016] S1. Check through the transparent window whether the chemicals filled in the drying tube and the carbon dioxide filter tube in the shell have expired or whether the amount of chemicals is sufficient. If the chemicals have expired or the amount of chemicals is insufficient, replace or replenish the chemicals;

[0017] S2. Use the balloon assembly of the optical tile inspection instrument to perform an airtightness test on the drying tube and the carbon dioxide filter tube before measurement to ensure that the device is leak-free before proceeding to the next step;

[0018] S3. Clean the air in the pipeline in fresh air flow, connect the air outlet to the air inlet of the optical tile detector through a rubber tube; adjust the switch to the first label, and then use the optical tile detector to complete the measurement of the methane concentration in the underground atmosphere at the inspection location;

[0019] S4. After executing step S3, adjust the conversion switch to the second label, and then start measuring the concentration of mixed gases in the underground atmosphere. The carbon dioxide concentration in the underground atmosphere can be calculated by conversion, thus completing the whole process of measuring inspection parameters in conjunction with the optical tile detector.

[0020] Furthermore, during use, when the sensor indicator light lights up red, it indicates that the medicine has expired and the measurement is invalid.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention is equipped with a gas path conversion mechanism, which can control whether to filter carbon dioxide in the gas by adjusting the three-way ball valve, thereby realizing the staged measurement of methane concentration and carbon dioxide concentration. There is no need to perform tedious operations such as replacing drying tubes or repeatedly plugging and unplugging hoses between tube groups, which simplifies the measurement process, reduces labor intensity, and improves measurement efficiency.

[0023] 2. The present invention arranges the drying tube, carbon dioxide filter tube, gas path conversion and other structures inside the shell, which can effectively protect the drying tube and other structures from damage in the complex environment underground, extend the service life of the device, and facilitate personnel operation and carrying.

[0024] 3. The present invention provides detachable covers on the upper and lower end surfaces of the shell, which facilitates the quick replacement of filter chemicals without disassembling the device shell, ensures the stable position of the drying tube and carbon dioxide filter tube inside the shell, and ensures that the overall air tightness of the device is not affected.

[0025] 4. The present invention uses a sensor to automatically identify the compliance of the gas to be detected entering the optical tile detector, eliminating the distortion of measurement results caused by substandard gas composition from the source and improving the accuracy of concentration measurement.

[0026] Other advantages, objects, and features of the present invention will be described in detail in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0028] Figure 1 This is a front view of the integrated drying tube assembly device used in the optical tile inspection instrument of the present invention.

[0029] Figure 2 This is an internal cross-sectional view of the integrated drying tube assembly device used in the optical tile inspection instrument of the present invention.

[0030] Figure 3 It is a side view of the integrated drying tube assembly device used in the optical tile inspection instrument of the present invention.

[0031] Figure 4 It is a three-dimensional diagram of the integrated drying tube assembly device used in the optical tile inspection instrument of the present invention.

[0032] Figure markings: 1-shell; 2-first air inlet; 3-second air inlet; 4-air outlet; 5-carbon dioxide filter tube; 6-drying tube; 7-conversion switch; 8-three-way ball valve; 9-moisture monitoring sensor; 10-carbon dioxide monitoring sensor; 11-sensor indicator light. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0035] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] See also Figures 1 to 4 An integrated drying tube assembly device for an optical tile inspection instrument includes a housing 1, a drying tube 6, a carbon dioxide filter tube 5, an air path conversion mechanism, and a gas filtration effect detection mechanism arranged within the housing 1; the housing 1 is provided with a first air inlet 2, a second air inlet 3, and an air outlet 4; the air path conversion mechanism is arranged between the drying tube 6 and the carbon dioxide filter tube 5, and simultaneously connects the drying tube 6, the carbon dioxide filter tube 5, and the second air inlet 3; one end of the carbon dioxide filter tube 5 is connected to the first air inlet 2, and one end of the drying tube 6 is connected to the air outlet 4;

[0037] During detection, the air outlet 4 is connected to the optical tile detector, and the air path conversion mechanism is switched so that the detection air flow enters the carbon dioxide filter tube 5 from the first air inlet 2 to filter the carbon dioxide, and then enters the drying tube 6 through the air path conversion mechanism to remove moisture, or the detection air flow enters the drying tube 6 directly from the second air inlet 3 through the air path conversion mechanism to remove moisture, and finally enters the optical tile detector from the air outlet 4.

[0038] Among them, the gas path conversion mechanism includes a conversion switch 7, a conversion label and a three-way ball valve 8; the conversion switch 7 is arranged outside the shell 1, and passes through the shell 1 to be connected to the three-way ball valve 8 arranged inside the shell 1, and the three-way ball valve 8 is controlled by the conversion switch 7; the three interfaces of the three-way ball valve 8 are respectively connected to the drying pipe 6, the carbon dioxide filter tube 5, and the second air inlet 3; the conversion label includes a first label and a second label arranged at 90° on the outer surface of the shell 1, and the first label and the second label are both located around the conversion switch 7. When the conversion switch 7 is turned to point to the first label, the three-way ball valve 8 is connected to the carbon dioxide filter tube 5, and when the conversion switch 7 is turned to point to the second label, the three-way ball valve 8 is correspondingly connected to the second air inlet 3.

[0039] The gas filtration effect detection mechanism includes a moisture monitoring sensor 9, a carbon dioxide monitoring sensor 10, a monitoring module, and a sensor indicator light 11; the moisture monitoring sensor 9 is arranged at the outlet end of the drying tube 6, and the carbon dioxide monitoring sensor 10 is arranged at the outlet end of the carbon dioxide filter tube 5; the sensor indicator light 11 is arranged on the shell 1, and the moisture monitoring sensor 9, the carbon dioxide monitoring sensor 10, and the sensor indicator light 11 are all connected to the detection module. The detection module controls the sensor indicator light 11 to display whether the moisture and carbon dioxide in the gas meet the standards based on the moisture and carbon dioxide detection data.

[0040] Both the drying tube 6 and the carbon dioxide filter tube 5 consist of a tube body and a cover plate. The cover plate is threadedly connected to the tube body, and both ends of the tube body are sealed with the cover plate. The drying tube 6 is filled with a water vapor filter, typically calcium chloride or color-changing silica gel; the carbon dioxide filter tube 5 is filled with a carbon dioxide filter, typically soda lime. The cover plates at one end of each tube body are located outside the housing 1, one on the upper and lower sides of the housing 1. The cover plates are removed to replace the chemicals.

[0041] Two transparent windows are provided on the housing 1 , which correspond to the drying tube 6 and the carbon dioxide filter tube 5 respectively, and are used to observe the color changes of the medicines in the drying tube 6 and the carbon dioxide filter tube 5 .

[0042] A method for using the above integrated drying tube assembly device for an optical tile inspection instrument comprises the following steps:

[0043] S1. Check through the transparent window whether the chemicals filled in the drying tube 6 and the carbon dioxide filter tube 5 in the housing 1 have expired or whether the amount of the chemicals is sufficient. If the chemicals have expired or the amount of the chemicals is insufficient, replace or replenish the chemicals.

[0044] S2. Use the balloon assembly of the optical tile inspection instrument to perform an airtightness test on the drying tube 6 and the carbon dioxide filter tube 5 before measurement to ensure that the device is leak-free before proceeding to the next step;

[0045] S3. Clean the air in the pipeline in fresh air flow, connect the air outlet 4 to the air inlet of the optical tile detector through a rubber tube; adjust the switch 7 to the first label, and then use the optical tile detector to complete the measurement of the methane concentration in the underground atmosphere at the inspection location;

[0046] S4. After executing step S3, adjust the conversion switch 7 to the second label, and then start measuring the concentration of mixed gases in the underground atmosphere. The carbon dioxide concentration in the underground atmosphere can be calculated by conversion, and the whole process of measuring inspection parameters in conjunction with the optical tile detector is completed.

[0047] During use, when the sensor indicator light 11 lights up red, it indicates that the medicine has expired, and the measurement is invalid, and the medicine needs to be replaced and re-measured.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. An integrated drying tube assembly device for an optical tile inspection instrument, characterized in that: The invention comprises a shell, a drying pipe, a carbon dioxide filter pipe and an air path conversion mechanism arranged in the shell; the shell is provided with a first air inlet, a second air inlet and an air outlet; the air path conversion mechanism is arranged between the drying pipe and the carbon dioxide filter pipe, and is connected to the drying pipe, the carbon dioxide filter pipe and the second air inlet at the same time, one end of the carbon dioxide filter pipe is connected to the first air inlet, and one end of the drying pipe is connected to the air outlet; During detection, the air outlet is connected to the optical tile detector, and the air path conversion mechanism is switched so that the detection airflow enters the carbon dioxide filter tube from the first air inlet to filter the carbon dioxide, and then enters the drying tube through the air path conversion mechanism to remove moisture, or the detection airflow enters the drying tube directly from the second air inlet through the air path conversion mechanism to remove moisture, and finally enters the optical tile detector from the air outlet.

2. The integrated drying tube assembly device for an optical tile inspection instrument according to claim 1, characterized in that: The gas path conversion mechanism includes a conversion switch, a conversion label and a three-way ball valve; the conversion switch is arranged outside the housing, and passes through the housing to be connected with the three-way ball valve arranged inside the housing, and the three-way ball valve is controlled by the conversion switch; the three interfaces of the three-way ball valve are respectively connected to the drying tube, the carbon dioxide filter tube, and the second air inlet; The conversion label includes a first label and a second label arranged at 90° on the outer surface of the shell, and the first label and the second label are both located around the conversion switch. When the conversion switch is turned to point to the first label, the three-way ball valve is connected to the carbon dioxide filter tube. When the conversion switch is turned to point to the second label, the three-way ball valve is correspondingly connected to the second air inlet.

3. The integrated drying tube assembly device for an optical tile inspection instrument according to claim 1, characterized in that: It also includes a gas filtering effect detection mechanism, which includes a moisture monitoring sensor, a carbon dioxide monitoring sensor, a monitoring module, and a sensor indicator light; The moisture monitoring sensor is arranged at the outlet end of the drying tube, and the carbon dioxide monitoring sensor is arranged at the outlet end of the carbon dioxide filtering tube; the sensor indicator light is arranged on the shell, and the moisture monitoring sensor, the carbon dioxide monitoring sensor, and the sensor indicator light are all connected to the detection module. The detection module controls the sensor indicator light to display whether the moisture and carbon dioxide in the gas meet the standards according to the moisture and carbon dioxide detection data.

4. The integrated drying tube assembly device for an optical tile inspection instrument according to claim 1, characterized in that: The drying tube and the carbon dioxide filter tube both include a tube body and a cover plate; the cover plate is connected to the tube body by threads, and both ends of the tube body are sealed by the cover plate; the tube body of the drying tube is filled with medicine for filtering water vapor, and the tube body of the carbon dioxide filter tube is filled with medicine for filtering carbon dioxide.

5. The integrated drying tube assembly device for an optical tile inspection instrument according to claim 4, characterized in that: The cover plate at one end of the tube body is located outside the shell body, and the medicine can be replaced by removing the cover plate.

6. The integrated drying tube assembly device for an optical tile inspection instrument according to claim 4, characterized in that: The shell is provided with two transparent windows, which correspond to the drying tube and the carbon dioxide filter tube respectively and are used to observe the color change of the medicine in the drying tube and the carbon dioxide filter tube.

7. A method for using the integrated drying tube assembly device for an optical tile inspection instrument as claimed in any one of claims 1 to 6, characterized in that: The steps include: S1. Check through the transparent window whether the chemicals filled in the drying tube and the carbon dioxide filter tube in the shell are invalid or the amount of chemicals is sufficient. If the chemicals are invalid or the amount of chemicals is insufficient, replace or replenish the chemicals; S2. Use the balloon group of the optical tile inspection instrument to test the air tightness of the drying tube and the carbon dioxide filter tube before measurement to ensure that the device is leak-free before proceeding to the next step; S3. Clean the air in the pipeline in the fresh air flow, connect the air outlet to the air inlet of the optical tile detector through a rubber tube; adjust the conversion switch to the first label, and then use the optical tile detector to complete the measurement of the methane concentration in the underground atmosphere at the location to be inspected; S4. After executing step S3, adjust the conversion switch to the second label, and then start to measure the concentration of mixed gases in the underground atmosphere. The concentration of carbon dioxide in the underground atmosphere can be calculated by conversion, thus completing the whole process of measuring inspection parameters in cooperation with the optical tile detector.

8. The method for using the integrated drying tube assembly device for an optical tile inspection instrument according to claim 7, characterized in that: During use, when the sensor indicator light turns red, it means that the drug has expired and the measurement is invalid.

Images