A carbon monoxide detection device for use down a well

Abstract

The application relates to the technical field of gas detection sensors, and discloses a carbon monoxide detection device for underground use, which comprises a detector main body and a sensor, the bottom of the detector main body is fixed with a connecting cover, the bottom of the connecting cover is fixed with a detection box, the surface of one end of the detection box is provided with a filter hole, the bottom of the detection box is fixed with a bottom cover, a dehumidification assembly for preventing moisture is arranged on the bottom cover, the dehumidification assembly comprises a gas chamber detector main body, the gas chamber detector main body is fixed in the inside of the detection box, and a gas outlet is arranged on the side, away from the filter hole, of the gas chamber detector main body. The carbon monoxide detection device for underground use is provided with the dehumidification assembly arranged in the detection box. When the air pump is started, air enters the inside of the gas chamber detector main body through the filter hole, and then is blown to the sensor after being dehumidified by the box-mounted molecular sieve, so that the air is dehumidified and dusted before carbon monoxide detection, and the precision of sensor detection is improved.

Description

Technical Field

[0001] This invention relates to the field of gas detection sensor technology, specifically to a carbon monoxide detection device for use in downhole wells. Background Technology

[0002] A mine shaft is a general term for the shafts, chambers, equipment, surface buildings, and structures that form an underground coal mine production system. Sometimes, inclined shafts, vertical shafts, and adits in underground mine development are also referred to as mine shafts. When mining underground, equipment such as diesel locomotives, excavators, or loaders are usually used. The exhaust gas from these machines contains carbon monoxide. At the same time, spontaneous combustion of abandoned coal mines during underground mining can also produce carbon monoxide. Therefore, carbon monoxide sensors are required to detect carbon monoxide during underground mining to ensure the working environment of workers.

[0003] Currently, commonly used carbon monoxide sensors on the market are usually equipped with dustproof nets and self-cleaning structures to ensure detection accuracy and avoid the influence of dust. However, underground mines not only contain dust, but also have varying moisture content in different areas and at different times. When the moisture content is too high, it will also affect the accuracy of carbon monoxide detection. At the same time, moisture will cause dust to stick together, causing the dust that was originally clogging the dustproof net to clump together, turning dry dust into sticky dust, which increases the difficulty of cleaning. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a carbon monoxide detection device for downhole applications, solving the problems mentioned in the background section.

[0005] The present invention provides the following technical solution: a carbon monoxide detection device for downhole, comprising a detector body and a sensor, wherein a connecting cover is fixed to the bottom of the detector body, a detection box is fixed to the bottom of the connecting cover, a filter hole is opened on the surface of one end of the detection box, a bottom cover is fixed to the bottom of the detection box, and a dehumidification component for moisture prevention is provided on the bottom cover.

[0006] The dehumidification assembly includes a gas chamber detector body, which is fixed inside the detection box. The gas chamber detector body has an air outlet on the side away from the filter holes. The bottom and the side near the filter holes of the gas chamber detector body are hollowed out. A guide plate assembly is fixed on the inner walls on both sides of the gas chamber detector body. A boxed molecular sieve is snapped into the inside of the gas chamber detector body. The boxed molecular sieve passes through the bottom cover. An mounting plate is fixed to the bottom of the boxed molecular sieve.

[0007] Optionally, the sensor is fixed to the bottom of the detector body, and an air pump is fixed to the side of the bottom cover near the sensor. The detection box and the connecting cover are interconnected.

[0008] Optionally, a motor is fixed to the side of the detector body near the filter hole, a pressure plate is fixed to the output shaft of the motor, and an airbag is fixed to the top of the detection box, with the top of the airbag fixed to the pressure plate.

[0009] Optionally, limiting tubes are fixed on both sides of the end of the airbag away from the detector body, and the limiting tubes are connected to the airbag. A push rod is slidably connected inside the limiting tube. A sliding rod is fixed at the end of the push rod away from the detector body. The sliding rod is slidably and sealingly connected to the limiting tube. A filter cover is fixed at the end of the sliding rod away from the airbag.

[0010] Optionally, a connecting plate is fixed to the end of the push rod away from the slide rod, and a first elastic rope is fixed to the side of the connecting plate away from the push rod. The first elastic rope is fixed to the inner wall of the airbag.

[0011] Optionally, an air jet assembly is fixed to the top of the bottom cover near the filter hole. The air jet assembly is connected to the airbag, and a first valve is fixed inside the air jet assembly near the end of the airbag.

[0012] Optionally, the bottom of both sides of the pressure plate is fixed with retaining beads, the surface of the retaining beads is engaged with connecting posts, the connecting posts are slidably connected to the boxed molecular sieve, and silicone rods are fixed on both sides of the connecting posts, the silicone rods being located inside the boxed molecular sieve.

[0013] Optionally, an air tube is fixed to one end of the airbag near the detector body, a second valve is fixed inside the air tube, and a transmission rod is slidably and sealed to the side of the air tube away from the airbag.

[0014] Optionally, a pusher is fixed to the end of the transmission rod away from the second valve, a mounting bracket is fixed to the bottom of the pusher, a dust-free cloth is fixed to the top of the mounting bracket, and a second elastic rope is fixed to both ends of the pusher near the air pipe, the second elastic rope being fixed to the inner wall of the connecting cover.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This carbon monoxide detection device for downhole applications uses a dehumidification component installed inside the detection chamber. When the air pump is started, air enters the main body of the gas chamber detector through the filter holes, and then is dehumidified by the boxed molecular sieve before being blown towards the sensor. This process of dehumidifying and removing dust from the air before detecting carbon monoxide improves the accuracy of the sensor detection.

[0017] 2. This carbon monoxide detection device for downhole applications, when the motor is started, can drive the pressure plate to compress the air bladder. With the repeated compression of the air bladder, and by controlling the opening of the first and second valves as needed, the air inside the air bladder can push the push rod, slide rod, and filter cover to enhance the dust removal effect. At the same time, the air pushes the transmission rod, which in turn drives the dust-free cloth to wipe the sensor, thereby improving the accuracy of sensor detection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is an internal structural view of the detection box of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the detection box of the present invention;

[0021] Figure 4 This is a schematic diagram of the main structure of the gas chamber detector of the present invention;

[0022] Figure 5 This is an internal structural view of the main body of the gas chamber detector of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the gas chamber detector body, bottom cover, and mounting plate of the present invention;

[0024] Figure 7 This is a schematic diagram of the pusher, air tube, and airbag of the present invention;

[0025] Figure 8 This is a cross-sectional view of the airbag structure of the present invention;

[0026] Figure 9 This is a cross-sectional view of the structure of the boxed molecular sieve of the present invention.

[0027] In the diagram: 1. Detector body; 11. Sensor; 2. Connecting cover; 21. Detection box; 22. Filter hole; 23. Bottom cover; 24. Air pump; 3. Gas chamber detector body; 31. Air outlet; 32. Guide plate assembly; 33. Boxed molecular sieve; 34. Mounting plate; 4. Motor; 41. Pressure plate; 42. Airbag; 43. Limiting tube; 44. Push rod; 45. Slide rod; 46. Filter cover; 47. Connecting plate; 48. First elastic rope; 5. Air jet pipe assembly; 51. First valve; 6. Clamping bead; 61. Connecting column; 62. Silicone rod; 7. Air pipe; 71. Second valve; 72. Transmission rod; 8. Push frame; 81. Mounting bracket; 82. Cleanroom cloth; 83. Second elastic rope. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1:

[0030] Please see Figure 1-9 A carbon monoxide detection device for downhole applications includes a detector body 1 and a sensor 11. A connecting cover 2 is fixed to the bottom of the detector body 1, and a detection box 21 is fixed to the bottom of the connecting cover 2. A filter hole 22 is opened on the surface of one end of the detection box 21. A bottom cover 23 is fixed to the bottom of the detection box 21. A dehumidification component for moisture prevention is provided on the bottom cover 23. The dehumidification component includes a gas chamber detector body 3, which is fixed inside the detection box 21. An air outlet 31 is opened on the side of the gas chamber detector body 3 away from the filter hole 22. The bottom of the gas chamber detector body 3 and the side near the filter hole 22 are both hollowed out.

[0031] A guide plate 32 is fixed on the inner walls of both sides of the gas chamber detector body 3. A boxed molecular sieve 33 is snapped into the inside of the gas chamber detector body 3. The boxed molecular sieve 33 passes through the bottom cover 23. An mounting plate 34 is fixed to the bottom of the boxed molecular sieve 33. The sensor 11 is fixed to the bottom of the detector body 1. An air pump 24 is fixed on the side of the bottom cover 23 near the sensor 11. The detection box 21 and the connecting cover 2 are interconnected.

[0032] In specific operation, when the present invention is installed in the mine and carbon monoxide detection is required, the air pump 24 is first started by the controller. The air pump 24 generates negative pressure and draws the air in the mine into the detection box 21 through the filter hole 22.

[0033] When air enters the interior of the detection chamber 21, it first passes through the filter hole 22, where dust in the air is filtered. Then, under the suction of the air pump 24, the air enters the interior of the air chamber detector body 3 and flows in an S-shape along the inner wall of the air chamber detector body 3 and the guide plate 32. During the flow, the air passes through the boxed molecular sieve 33, which then allows the molecular sieve in the boxed molecular sieve 33 to adsorb moisture in the air.

[0034] After dehumidification, the air flows through the air outlet 31 toward the sensor 11. Then, the controller activates the detector body 1 and the sensor 11, enabling the sensor 11 to detect the air below it. This improves the accuracy of the sensor 11 in detecting carbon monoxide and reduces the impact of moisture on the sensor 11.

[0035] Meanwhile, the baffle plate 32 extends the time and path of air circulation inside the gas chamber detector body 3, allowing the air to be dehumidified multiple times during circulation, thereby improving the dehumidification effect. It also allows the air more time to contact the sensor 11, extending the reaction time between carbon monoxide and the electrochemical electrode of the sensor 11, thus improving the accuracy of the sensor 11 in detecting carbon monoxide.

[0036] It should be noted that all devices of the present invention are controlled by a controller. The end of the detection box 21 away from the filter hole 22 is provided with an air vent to ensure that the air in the detection box 21 can be discharged to the outside after being detected by the sensor 11. The filter hole 22 is fixed to the detection box 21 by bolts. When necessary, the bottom cover 23 can be removed from the bottom of the detection box 21. The guide plates 32 are staggered and the boxed molecular sieves 33 are also staggered.

[0037] Example 2:

[0038] A motor 4 is fixed on the side of the detector body 1 near the filter hole 22. A pressure plate 41 is fixed on the output shaft of the motor 4. An air bag 42 is fixed on the top of the detection box 21, and the top of the air bag 42 is fixed to the pressure plate 41. Limiting tubes 43 are fixed on both sides of the end of the air bag 42 away from the detector body 1, and the limiting tubes 43 and the air bag 42 are connected. A push rod 44 is slidably connected inside the limiting tube 43. A sliding rod 45 is fixed on the end of the push rod 44 away from the detector body 1. The sliding rod 45 is slidably and sealed to the limiting tube 43. A filter cover 46 is fixed on the end of the sliding rod 45 away from the air bag 42.

[0039] A connecting plate 47 is fixed to the end of the push rod 44 away from the slide rod 45. A first elastic rope 48 is fixed to the side of the connecting plate 47 away from the push rod 44. The first elastic rope 48 is fixed to the inner wall of the airbag 42. An air jet assembly 5 is fixed to the top of the bottom cover 23 near the filter hole 22. The air jet assembly 5 is connected to the airbag 42. A first valve 51 is fixed inside the end of the air jet assembly 5 near the airbag 42. A retaining bead 6 is fixed to the bottom of both sides of the pressure plate 41. A connecting column 61 is engaged on the surface of the retaining bead 6. The connecting column 61 is slidably connected to the boxed molecular sieve 33. Silicone rods 62 are fixed to both sides of the connecting column 61. The silicone rods 62 are located inside the boxed molecular sieve 33.

[0040] Specifically, based on Embodiment 1, when sensor 11 detects carbon monoxide in the air, motor 4 can be started by controller, causing the output shaft of motor 4 to push out, causing motor 4 to drive pressure plate 41 to press down, causing pressure plate 41 to squeeze airbag 42, thereby compressing the air inside airbag 42. At this time, control the first valve 51 to be closed, thereby allowing the air inside airbag 42 to enter the interior of limiting tube 43, and push push rod 44 and slide rod 45, causing slide rod 45 to extend outward from the interior of limiting tube 43, thereby releasing the filter cover 46 from the detection box 21, so that filter cover 46 and filter hole 22 form a double filter layer;

[0041] When the air pump 24 is pumping air, the air first passes through the filter cover 46 for the first filtration, and then through the filter hole 22 for the second filtration, which further reduces the probability of dust entering the detection box 21, thereby improving the accuracy of the sensor 11 in detecting carbon monoxide.

[0042] Simultaneously, the control motor 4 repeatedly pushes out, causing the pressure plate 41 to repeatedly squeeze the airbag 42, thus repeatedly compressing the air inside the airbag 42. When the motor 4 resets, the airbag 42 is pulled back to its original position by the pressure plate 41. At the same time, under the action of the first elastic rope 48, the first elastic rope 48 pulls the connecting plate 47 and pulls the push rod 44, which in turn drives the slide rod 45 to reset. The slide rod 45 then drives the filter cover 46 to reset. During the reset and push-out process, the filter cover 46 moves back and forth in a periodic manner. The reciprocating movement of the filter cover 46 further improves the filtration effect of dust in the air, thereby further improving the accuracy of the sensor 11 in detecting carbon monoxide.

[0043] Furthermore, when the filter cover 46 is fully reset, the filter cover 46 is snapped onto the outside of the detection box 21 and comes into contact with the detection box 21. When the filter cover 46 comes into contact with the detection box 21, the detection box 21 and the filter cover 46 vibrate against each other, which causes the dust blocking the filter holes 22 and the filter cover 46 to be shaken off, thus achieving the effect of continuously cleaning the filter holes 22 and the filter cover 46, thereby ensuring the amount of air entering the detection box 21.

[0044] Furthermore, after the present invention has been performing carbon monoxide detection for a long time, the filter hole 22 needs to be cleaned to ensure the flow rate of air entering the detection chamber 21. At this time, the motor 4 is started by the controller and the first valve 51 is opened, so that the air in the airbag 42 can be directly compressed into the interior of the jet pipe assembly 5, and then the filter hole 22 is blown clean by the jet pipe assembly 5, so that the dust that is blocked or adhered in the filter hole 22 is blown away.

[0045] This allows the filter holes 22 to be cleaned by vibration, and combined with air blowing, the cleaning effect of the present invention is further improved, thereby ensuring the amount of air entering and the amount of detection.

[0046] Furthermore, during the repeated compression of the airbag 42 by the pressure plate 41, the pressure plate 41 causes the retaining bead 6 to move up and down repeatedly, which in turn causes the retaining bead 6 to move the connecting column 61 up and down repeatedly. This causes the connecting column 61 to slide up and down repeatedly at the top of the air chamber detector body 3, which in turn causes the connecting column 61 to move the silicone rod 62 up and down repeatedly inside the boxed molecular sieve 33. During this movement, the silicone rod 62 acts as agitator for the molecular sieve, allowing it to more comprehensively and fully adsorb moisture in the air, further improving the dehumidification effect. This further reduces the impact of moisture on the sensor 11, thereby improving the accuracy of the sensor 11 in detecting carbon monoxide.

[0047] It should be noted that the connecting column 61 passes through the boxed molecular sieve 33, the gas chamber detector body 3, and the detection box 21 simultaneously, and the silicone rod 62 is set at an angle, which can further improve the effect of turning the molecular sieve. The silicone rod 62 is made of silicone, which ensures that the silicone rod 62 reduces damage to the molecular sieve during rapid movement.

[0048] Example 3:

[0049] An air tube 7 is fixed to one end of the airbag 42 near the detector body 1. A second valve 71 is fixed inside the air tube 7. A transmission rod 72 is slidably and sealed to the side of the air tube 7 away from the airbag 42. A pusher 8 is fixed to the end of the transmission rod 72 away from the second valve 71. A mounting bracket 81 is fixed to the bottom of the pusher 8. A dust-free cloth 82 is fixed to the top of the mounting bracket 81. Second elastic ropes 83 are fixed to both ends of the pusher 8 near the air tube 7. The second elastic ropes 83 are fixed to the inner wall of the connecting cover 2.

[0050] Specifically, based on Embodiment 1 and Embodiment 2, after the air passes through the filter cover 46 and filter holes 22 for two dust removal processes and the boxed molecular sieve 33 for dehumidification, it is blown towards the sensor 11 through the air outlet 31. When the air passes through the air outlet 31, it enters the interior of the mounting bracket 81, making the air blow more concentrated towards the area below the sensor 11. This allows the air to flow evenly to the area below the sensor 11 and be detected, thereby improving the comprehensiveness of the sensor 11's detection and reducing the probability that carbon monoxide in the air is discharged before it fully reacts with the electrochemical electrode of the sensor 11, thus improving the accuracy of the sensor 11 in detecting carbon monoxide.

[0051] Furthermore, after the sensor 11 has been detecting for a long time, the controller opens the second valve 71 and closes the first valve 51, thereby allowing the air in the airbag 42 to enter the air tube 7 and the limiting tube 43 at the same time. The air entering the air tube 7 then pushes the transmission rod 72 to move inside the air tube 7, which in turn pushes the pusher 8 to move the mounting bracket 81 and the clean cloth 82 toward the bottom of the sensor 11. This causes the clean cloth 82 to gradually approach the surface of the sensor 11 until the clean cloth 82 is attached to the bottom surface of the sensor 11.

[0052] When the lint-free cloth 82 comes into contact with the sensor 11, the transmission rod 72 continuously pushes the pusher 8, causing the pusher 8 to drive the lint-free cloth 82 to wipe the bottom of the sensor 11, thereby cleaning the surface of the sensor 11, making the detection of the sensor 11 more accurate, while extending the maintenance cycle of the present invention and improving the efficiency of the present invention.

[0053] It should be noted that when the air in the airbag 42 is connected to the limiting tube 43 and the air tube 7 at the same time, there is enough air volume to push the transmission rod 72, so that the transmission rod 72 can stably drive the clean cloth 82 to wipe the sensor 11.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon monoxide detection device for downhole applications, comprising a detector body (1) and a sensor (11), characterized in that: The bottom of the detector body (1) is fixed with a connecting cover (2), the bottom of the connecting cover (2) is fixed with a detection box (21), a filter hole (22) is opened on the surface of one end of the detection box (21), a bottom cover (23) is fixed on the bottom of the detection box (21), and a dehumidification component for moisture prevention is provided on the bottom cover (23). The dehumidification assembly includes a gas chamber detector body (3), which is fixed inside the detection box (21). The gas chamber detector body (3) has an air outlet (31) on the side away from the filter hole (22). The bottom of the gas chamber detector body (3) and the side near the filter hole (22) are hollowed out. The inner walls on both sides of the gas chamber detector body (3) are fixed with a flow guide plate assembly (32). A boxed molecular sieve (33) is snapped into the inside of the gas chamber detector body (3). The boxed molecular sieve (33) passes through the bottom cover (23). The bottom of the boxed molecular sieve (33) is fixed with an mounting plate (34). A motor (4) is fixed on the side of the detector body (1) near the filter hole (22), and a pressure plate (41) is fixed on the output shaft of the motor (4). An air bag (42) is fixed on the top of the detection box (21), and the top of the air bag (42) is fixed to the pressure plate (41). The bottom cover (23) has an air jet assembly (5) fixed on the side near the filter hole (22) at the top, and the air jet assembly (5) is connected to the airbag (42); The bottom of both sides of the pressure plate (41) is fixed with a bead (6), and a connecting column (61) is attached to the surface of the bead (6). The connecting column (61) is slidably connected to the boxed molecular sieve (33). A silicone rod (62) is fixed on both sides of the connecting column (61). The silicone rod (62) is located inside the boxed molecular sieve (33).

2. The carbon monoxide detection device for downhole applications according to claim 1, characterized in that: The sensor (11) is fixed to the bottom of the detector body (1), and an air pump (24) is fixed on the side of the bottom cover (23) near the sensor (11). The detection box (21) and the connecting cover (2) are connected to each other.

3. The carbon monoxide detection device for downhole applications according to claim 1, characterized in that: Limiting tubes (43) are fixed on both sides of the end of the airbag (42) away from the detector body (1), and the limiting tubes (43) and the airbag (42) are connected. A push rod (44) is slidably connected inside the limiting tube (43). A slide rod (45) is fixed at the end of the push rod (44) away from the detector body (1). The slide rod (45) is slidably and sealed to the limiting tube (43). A filter cover (46) is fixed at the end of the slide rod (45) away from the airbag (42).

4. The carbon monoxide detection device for downhole applications according to claim 3, characterized in that: A connecting plate (47) is fixed to one end of the push rod (44) away from the slide rod (45). A first elastic rope (48) is fixed to one side of the connecting plate (47) away from the push rod (44). The first elastic rope (48) is fixed to the inner wall of the airbag (42).

5. The carbon monoxide detection device for downhole applications according to claim 1, characterized in that: The first valve (51) is fixed inside the jet pipe assembly (5) near the end of the airbag (42).

6. The carbon monoxide detection device for downhole applications according to claim 1, characterized in that: The airbag (42) is fixed with an air tube (7) at one end near the detector body (1). A second valve (71) is fixed inside the air tube (7). A transmission rod (72) is slidably and sealed on the side of the air tube (7) away from the airbag (42).

7. The carbon monoxide detection device for downhole applications according to claim 6, characterized in that: The transmission rod (72) is fixed with a pusher (8) at the end away from the second valve (71). The bottom of the pusher (8) is fixed with a mounting bracket (81). The top of the mounting bracket (81) is fixed with a dust-free cloth (82). The two ends of the pusher (8) near the air pipe (7) are fixed with second elastic ropes (83). The second elastic ropes (83) are fixed to the inner wall of the connecting cover (2).

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