CO2 and O2 gas monitoring instrument suitable for high-pressure environment

Abstract

The invention relates to the technical field of gas monitoring instruments, in particular to a CO2 and O2 gas monitoring instrument applicable to a high-pressure environment, which comprises a pressure reduction component group, a buffer bin component group for buffering monitoring gas is mounted on the side surface of the pressure reduction component group, and a transmission adjusting component group is arranged in the buffer bin component group. And the transmission adjusting component group is driven by a structure in the pressure reduction component group to control the emission of gas in the temporary storage bin component group. Transmission adjustment and the buffer bin component group cooperate to solve the problem of unstable gas supply, a stable environment is created for monitoring, the data accuracy is improved, and the pressure reduction component group can efficiently reduce pressure twice after being combined and optimized and is convenient to adjust.

Description

Technical Field

[0001] The present invention relates to the technical field of gas monitoring instruments, and in particular to a CO2 and O2 gas monitoring instrument suitable for use in high-pressure environments. Background Art

[0002] In high-pressure environments such as hyperbaric oxygen chambers, deep-sea operations, and underground resource development, real-time monitoring of CO2 and O2 in the ambient air is of great significance for ensuring operational safety and improving work efficiency. Gas monitoring instruments are often used in normal pressure environments to directly monitor the carbon dioxide and oxygen content in the air. The gas monitoring instrument is mainly composed of a monitoring instrument body, monitoring sensor components, and sound and light alarms. When carbon dioxide or oxygen exceeds or falls below the set value, the sound and light alarm will sound an audible and visual alarm.

[0003] When the sensors used in existing gas monitors are faced with high-pressure gas, the monitoring accuracy of the sensors will decrease because the gas molecules are too dense under high pressure. In order to ensure the accuracy of the monitoring data of CO2 and O2 gases in the gas, a diaphragm gas pressure reducing valve will be installed outside the sensor to reduce the pressure of the high-pressure gas to be detected and then monitor it through the sensor to improve the accuracy of the monitoring data. However, this design still has the following problems: the diaphragm pressure reducing valve used will produce intermittent gas after decompression, which will bring many adverse effects to the subsequent monitoring process. On the one hand, unstable airflow entering the sensor will cause the detection environment of the sensor to be in a high-frequency continuous fluctuation state. Taking the oxygen sensor based on the electrochemical principle as an example, the gas The intermittent flow makes it impossible for the chemical reaction on the electrode surface to proceed evenly and continuously, and the generated current signal is chaotic, which leads to a large deviation in the monitored oxygen concentration data and cannot accurately reflect the actual gas composition content. Similarly, for the monitoring of carbon dioxide, the infrared absorption principle sensor is often used. When the gas passes through the gas chamber intermittently, the attenuation measurement of the light intensity will be seriously disturbed, causing the concentration calculation result to deviate from the actual. On the other hand, the high-frequency gas supply mode will damage the service life of the sensor. Frequent airflow impact and pressure changes can easily cause fatigue wear and even physical damage to the precision components inside the sensor, such as sensitive electrodes and optical lenses, which accelerates the aging process of the sensor. Summary of the invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a CO2, O2 gas monitoring instrument suitable for use in high-pressure environments, so as to solve the problem that the gas generated by the existing diaphragm pressure reducing valve decompressed is intermittent, causing the sensor detection environment to fluctuate at a high frequency, resulting in large deviations in the oxygen and carbon dioxide monitoring data, and also damaging the precision components of the sensor due to high-frequency gas supply, accelerating its aging, affecting the monitoring accuracy and sensor life.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CO and O2 gas monitoring instrument suitable for use in a high-pressure environment, comprising a gas monitor component group, wherein the gas monitor component group comprises a monitor body and a main sensor assembly, wherein the main sensor assembly is installed inside the monitor body, and a main air inlet is installed on the monitor body, wherein: a pressure reducing component group for reducing the pressure of the monitoring gas is installed inside the gas monitor component group, a cache bin component group for caching the monitoring gas is installed on the side of the pressure reducing component group, a transmission adjustment component group is arranged inside the cache bin component group, and the transmission adjustment component group controls the discharge of the gas in the cache bin component group by driving the structure in the pressure reducing component group, and an end vent assembly with a cavity is installed outside the main sensor assembly, and the end vent assembly is used to circulate and discharge the monitoring gas.

[0006] Preferably, the pressure reducing component group includes two groups of pressure reducing valve assemblies, the pressure reducing valve assembly includes a valve body, a gas axis channel is opened inside the valve body, the bottom of the valve body is connected to the valve bottom shell by a thread, the interior of the valve body is slidably connected to the middle rod assembly by a slide groove, the middle rod assembly includes an upper fixed rod and a lower moving rod, the upper fixed rod and the lower moving rod are in sliding contact, the lower moving rod is fixedly connected to a lower sealing ring through a through hole, a lower cavity connected to the gas axis channel of the valve body is formed between the valve bottom shell and the valve body, and the lower sealing ring can be blocked between the gas axis channel and the lower cavity.

[0007] Preferably, the bottom of the lower sealing ring is fixedly connected to a lower spring member, one end of the lower spring member away from the lower sealing ring is fixedly connected to the valve bottom shell, the top of the valve body member is threadedly connected to a top valve cover, an upper cavity is formed between the top valve cover and the valve body member, a diaphragm member is arranged inside the top valve cover, and the diaphragm member is clamped and fixed between the top valve cover and the valve body member.

[0008] Preferably, the diaphragm member is fixedly connected to the metal inner cylinder through a through hole, the metal inner cylinder is fixedly connected to the lower moving rod through the through hole, one end of the upper fixed rod is fixedly connected to the top inner disk, an upper spring member is provided at the bottom of the top inner disk, the upper spring member is fixedly connected between the top inner disk and the metal inner cylinder, the valve body member is connected to the vertical cylinder tube through the through hole, and the top valve cover is connected to the top adjusting member through a thread.

[0009] Preferably, the lower moving rod slides in contact with the valve body through a through hole, one end of the top adjusting member is fixedly connected to the top inner plate, a gas passage is provided inside the vertical tube, and the gas passage connects the upper cavity and the gas axis passage.

[0010] Preferably, the pressure reducing component group includes a connectivity detection component, which includes an air inlet ring component, an air outlet ring component, a middle ring component and a high-pressure pressure gauge, the middle ring component is connected between the two groups of valve body components, the air inlet ring component and the air outlet ring component are respectively connected to the two groups of valve body components, the air inlet ring component, the air outlet ring component and the middle ring component are all provided with channels on their axes, and the channels of the air inlet ring component, the air outlet ring component and the middle ring component are connected to the gas axis channels of the two valve body components, three high-pressure pressure gauges are provided, and the three high-pressure pressure gauges are respectively fixedly connected to the sides of the air inlet ring component, the air outlet ring component and the middle ring component through through holes, the high-pressure pressure gauge is used to display the pressure value of the gas circulating in the pressure reducing component group, and the side of the air inlet ring component is connected to the main air inlet through a pipeline.

[0011] Preferably, the pressure reducing component group includes a reinforced sealing assembly, which includes a top protective cover, a bottom protective cover, a fixing bolt member and a mounting frame seat, the top protective cover and the bottom protective cover both have a cavity, two mounting frame seats and two fixing bolt members are provided, and the two fixing bolt members and the mounting frame seat are symmetrically distributed on the upper and lower sides of the pressure reducing valve assembly, the mounting frame seat is fixedly connected to the air inlet ring member, the valve body member, the middle ring member and the air outlet ring member through a through groove, two fixing bolt members are provided, one of the fixing bolt members is connected to the middle ring member through a thread, and the other fixing bolt member is connected to the middle ring member through a thread, and the top protective cover and the bottom protective cover are respectively connected to the mounting frame seat through two fixing bolt members.

[0012] Preferably, the cache bin component group includes a gas cache bin having a cavity inside, an air inlet end and an air outlet end are respectively provided on both sides of the gas cache bin, the air inlet end of the gas cache bin is fixedly connected to the air outlet ring member, the gas cache bin is fixedly connected to a fixed partition via a groove, a ventilation groove is provided on the fixed partition, the end ventilation assembly includes a ventilation box body and an exhaust pipe fitting, a cavity is opened inside the ventilation box body, the ventilation box body is fixedly connected to the main sensor assembly via a through hole, one end of the exhaust pipe fitting is connected to the ventilation box body, the other end of the exhaust pipe fitting is connected to the external low-pressure area, and one side of the ventilation box body is connected to the air outlet end of the gas cache bin.

[0013] Preferably, the transmission adjustment component group includes a bottom square rod, the side of the bottom square rod is fixedly connected with a gear condition, the gear condition is meshed with a large gear cylinder, the large gear cylinder is connected to a transmission shaft through a bearing, a ratchet part and a pawl part are arranged inside the large gear cylinder, one end of the transmission shaft is fixedly connected with a transmission end gear, the side of the transmission end gear is meshed with a center position gear, the side of the center position gear is provided with an adjustment ring, a roller, a tension spring, an L-shaped plate frame and a guide frame, the adjustment ring and the center position gear are fixedly connected with a center shaft rod through a through hole, and the top of the L-shaped plate frame is fixedly connected with a movable partition.

[0014] Preferably, one end of the bottom square rod is fixedly connected to the lower moving rod, and the bottom square rod, gear condition, large gear cylinder, pawl member and ratchet member are provided in two groups, and the two groups of bottom square rods, gear condition, large gear cylinder, pawl member and ratchet member are respectively located at the bottom of two pressure reducing valve assemblies, the pawl member is connected to the large gear cylinder through a rotating shaft, a curved spring is connected to the side of the pawl member, and one side of the curved spring is connected to the large gear cylinder, the ratchet member and the pawl member are meshed, and the curved spring on the side of the pawl member is used to keep the pawl member and the ratchet member in contact, the ratchet member is fixedly connected to the transmission shaft through a through hole, and one end of the transmission shaft is connected to the rotating shaft The roller is connected to the bottom protective cover, the transmission shaft is connected to the bottom protective cover and the gas buffer chamber through a bearing, the central axis is connected to the gas buffer chamber through a rotating shaft, both ends of the roller are rotatably connected with a hanger, and the hanger is fixedly connected to the bottom of the L-shaped plate frame, the L-shaped plate frame is in sliding contact with the guide frame through a slide groove, the guide frame is connected in the gas buffer chamber cavity, the tension spring is connected between the guide frame and the L-shaped plate frame, a recessed structure is provided on the adjusting ring, the adjusting ring contacts the roller, the movable partition is provided with an air permeable groove of the same size corresponding to the fixed partition, and the movable partition is in sliding contact with the gas buffer chamber through the slide groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The transmission adjustment component group and the buffer chamber component group work together to successfully solve the problem of unstable gas supply in the traditional pressure reducing valve. The up and down reciprocating movement of the lower moving rod in the two pressure reducing component groups is cleverly converted into a one-way rotation of the adjustment ring, so that the gas originally discharged at a high frequency can be transferred and accumulated in the gas buffer chamber. With the continuous rotation of the adjustment ring, the air permeable grooves on the moving baffle and the fixed baffle are precisely matched, which can stably supply a relatively stable and continuous inflow of air to the ventilation box body, which creates an ideal stable gas environment for the monitoring unit and greatly improves the accuracy of the monitoring data. For example, for oxygen sensors based on electrochemical principles, stable airflow ensures that the chemical reaction on the electrode surface is uniform and continuous, and the current signal is stably output, making the oxygen concentration monitoring data accurate and reliable; for carbon dioxide sensors using the infrared absorption principle, stable airflow ensures accurate measurement of light intensity attenuation and concentration calculation results close to reality; 2. The pressure reduction component group can reduce the pressure of high-pressure gas twice by merging and optimizing the two groups. The pressure reduction range is large and the pressure reduction can be reduced efficiently. At the same time, the three high-pressure resistant pressure gauges in the detection component are connected to display the pressure value of the gas in the pressure reduction process in real time. The operator can fine-tune the top adjustment parts at any time to adjust the pressure reduction range; 3. Since the main sensor assembly is supplied with a steady airflow, the damage to the precision parts inside the sensor caused by frequent airflow shock and pressure changes in the high-frequency air supply mode is effectively avoided. The sensitive electrodes, optical lenses and other parts are no longer subject to the risk of fatigue wear and physical damage, which greatly slows down the aging process of the sensor, prolongs its service life, and reduces the equipment maintenance cost and replacement frequency. 4. The enhanced sealing assembly provides excellent sealing for the depressurization component group through the ingenious combination of the top protective cover, the bottom protective cover, the fixing bolts and the mounting frame. It can effectively prevent gas leakage in extreme high-pressure environments such as hyperbaric oxygen chambers, deep-sea operations and underground resource development, ensuring the stable and reliable operation of the entire monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall two-dimensional structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure at the AA position; Figure 4 It is a structural schematic diagram of the main air inlet, the pressure reduction component group, the buffer chamber component group and the end ventilation assembly of the present invention; Figure 5 It is a schematic diagram of the overall structure of the pressure reduction component group, the buffer chamber component group and the end ventilation assembly of the present invention; Figure 6It is a structural schematic diagram of the pressure reduction component group, the buffer chamber component group and the back of the end ventilation assembly of the present invention; Figure 7 It is a schematic structural diagram of a cross-section of a pressure reducing component group, a buffer chamber component group and an end vent assembly of the present invention; Figure 8 It is a structural schematic diagram of the pressure reducing component group and the transmission regulating component group of the present invention; Fig. 9 It is a structural schematic diagram of the back part of the pressure reducing component group and the transmission regulating component group of the present invention; Fig.10 It is a cross-sectional structural schematic diagram of the pressure reducing component group and the transmission regulating component group of the present invention; Fig.11 It is a structural schematic diagram of the transmission adjustment component group of the present invention; Fig.12 It is a structural schematic diagram of the large gear cylinder part of the present invention; Fig.13 It is a cross-sectional structural schematic diagram of the buffer bin component group and the transmission adjustment component group of the present invention; Fig.14 It is a structural schematic diagram of the L-shaped plate frame part of the present invention; Fig.15 It is a structural schematic diagram of the guide frame part of the transmission adjustment component group of the present invention; Fig.16 It is a structural schematic diagram of the roller and the adjusting ring part of the present invention; Fig.17 It is a schematic structural diagram of the middle rod assembly part of the present invention.

[0017] In the figure: 01, gas monitor component group; 11, monitor body; 12, main sensor assembly; 13, main air inlet; 02, pressure reduction component group; 21, pressure reduction valve assembly; 211, valve body; 212, valve bottom shell; 213, middle rod assembly; 2131, upper fixed rod; 2132, lower moving rod; 214, lower sealing ring; 215, lower spring component; 216, diaphragm component; 217, metal inner cylinder; 218, upper spring component; 219, top inner plate; 2110, top valve cover; 2111, vertical cylinder tube; 2112, top adjustment component; 22, connection detection assembly; 221, air inlet ring component; 222, air outlet ring component; 223, middle ring component; 224, high pressure gauge ;23. Strengthening sealing assembly;231. Top protective cover;232. Bottom protective cover;233. Fixing bolt;234. Mounting frame;03. Transmission adjustment component group;31. Bottom square rod;32. Tooth condition;33. Large gear cylinder;34. Ratchet piece;35. Ratchet piece;36. Transmission shaft;37. Transmission end gear;38. Center position gear;39. Adjustment ring;310. Center shaft;311. Roller;312. L-shaped plate frame;313. Tension spring piece;314. Guide frame;315. Moving partition;04. Cache compartment component group;41. Gas cache compartment;42. Fixed partition;05. End ventilation assembly;51. Ventilation box body;52. Exhaust pipe fitting. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-17 , an embodiment of the present invention: a CO2, O2 gas monitoring instrument suitable for use in a high-pressure environment, including a gas monitoring instrument component group 01, the gas monitoring instrument component group 01 includes a monitoring instrument body 11 and a main sensor assembly 12, the main sensor assembly 12 is installed inside the monitoring instrument body 11, and the monitoring instrument body 11 is equipped with a main air inlet 13, reference Figure 1-7 A pressure reducing component group 02 for reducing the pressure of the monitoring gas is installed inside the gas monitor component group 01, a buffer chamber component group 04 for buffering the monitoring gas is installed on the side of the pressure reducing component group 02, a transmission adjustment component group 03 is arranged inside the buffer chamber component group 04, the transmission adjustment component group 03 controls the discharge of the gas in the buffer chamber component group 04 by driving the structure in the pressure reducing component group 02, and an end ventilation component 05 with a cavity is installed outside the main sensor component 12, and the end ventilation component 05 is used for circulating and discharging the monitoring gas.

[0020] refer to Figure 8-10 The pressure reducing component group 02 includes two groups of pressure reducing valve assemblies 21. The pressure reducing valve assembly 21 includes a valve body 211. A gas axis channel is opened inside the valve body 211. The bottom of the valve body 211 is connected to a valve bottom shell 212 by a thread. The inside of the valve body 211 is slidably connected to a middle rod assembly 213 by a slide groove. The middle rod assembly 213 includes an upper fixed rod 2131 and a lower moving rod 2132. The upper fixed rod 2131 and the lower moving rod 2132 are in sliding contact. The lower moving rod 2132 is fixedly connected to a lower sealing ring 214 through a through hole. A lower cavity connected to the gas axis channel of the valve body 211 is formed between the valve bottom shell 212 and the valve body 211, and the lower sealing ring 214 can be blocked between the gas axis channel and the lower cavity.

[0021] The bottom of the lower sealing ring 214 is fixedly connected to a lower spring component 215, one end of the lower spring component 215 away from the lower sealing ring 214 is fixedly connected to the valve bottom shell 212, the top of the valve body component 211 is threadedly connected to a top valve cover 2110, an upper cavity is formed between the top valve cover 2110 and the valve body component 211, a diaphragm component 216 is arranged inside the top valve cover 2110, and the diaphragm component 216 is clamped and fixed between the top valve cover 2110 and the valve body component 211.

[0022] The diaphragm member 216 is fixedly connected to the metal inner cylinder 217 through a through hole, the metal inner cylinder 217 is fixedly connected to the lower moving rod 2132 through a through hole, one end of the upper fixed rod 2131 is fixedly connected to the top inner disk 219, an upper spring member 218 is provided at the bottom of the top inner disk 219, the upper spring member 218 is fixedly connected between the top inner disk 219 and the metal inner cylinder 217, the valve body member 211 is connected to the vertical cylinder tube 2111 through a through hole, and the top valve cover 2110 is connected to the top adjusting member 2112 through a thread.

[0023] The lower moving rod 2132 slides in contact with the valve body 211 through the through hole, one end of the top adjusting member 2112 is fixedly connected to the top inner disk 219, and a gas passage is provided inside the vertical tube 2111, and the gas passage connects the upper cavity and the gas axis passage.

[0024] The pressure reducing component group 02 includes a connection detection component 22, which includes an air inlet ring 221, an air outlet ring 222, a middle ring 223 and a high-pressure pressure gauge 224. The middle ring 223 is connected between the two groups of valve body parts 211. The air inlet ring 221 and the air outlet ring 222 are respectively connected to the two groups of valve body parts 211. The air inlet ring 221, the air outlet ring 222 and the middle ring 223 are all provided with channels on their axes, and the air inlet ring 221, the air outlet ring 222 and the middle ring 223 are all provided with channels on their axes. 21. The channels of the outlet ring member 222 and the middle ring member 223 are connected to the gas axis channels of the two valve body members 211. Three high-pressure pressure gauges 224 are provided, and the three high-pressure pressure gauges 224 are respectively fixedly connected to the sides of the inlet ring member 221, the outlet ring member 222 and the middle ring member 223 through through holes. The high-pressure pressure gauges 224 are used to display the pressure value of the gas flowing in the pressure reducing component group 02. The side of the inlet ring member 221 is connected to the main air inlet 13 through a pipeline.

[0025] The pressure reducing component group 02 includes a reinforced sealing assembly 23, which includes a top protective cover 231, a bottom protective cover 232, a fixing bolt member 233 and a mounting frame seat 234. The top protective cover 231 and the bottom protective cover 232 both have cavities. There are two mounting frame seats 234 and two fixing bolt members 233, and the two fixing bolt members 233 and the mounting frame seat 234 are symmetrically distributed on the upper and lower sides of the pressure reducing valve assembly 21. The mounting frame seat 234 is fixedly connected to the air inlet ring member 221, the valve body member 211, the middle ring member 223 and the air outlet ring member 222 through a through groove. There are two fixing bolt members 233, one fixing bolt member 233 is connected to the middle ring member 223 through a thread, and the other fixing bolt member 233 is connected to the middle ring member 223 through a thread, and the top protective cover 231 and the bottom protective cover 232 are respectively connected to the mounting frame seat 234 through two fixing bolt members 233.

[0026] refer to Figure 7 The cache chamber component group 04 includes a gas cache chamber 41, which has a cavity inside. An air inlet end and an air outlet end are respectively arranged on both sides of the gas cache chamber 41. The air inlet end of the gas cache chamber 41 is fixedly connected to the air outlet ring member 222. The gas cache chamber 41 is fixedly connected to a fixed partition plate 42 through a groove. The fixed partition plate 42 is provided with a ventilation groove. The end ventilation component 05 includes a ventilation box body 51 and an exhaust pipe fitting 52. A cavity is opened inside the ventilation box body 51. The ventilation box body 51 is fixedly connected to the main sensor component 12 through a through hole. One end of the exhaust pipe fitting 52 is connected to the ventilation box body 51, and the other end of the exhaust pipe fitting 52 is connected to the external low-pressure area. One side of the ventilation box body 51 is connected to the air outlet end of the gas cache chamber 41.

[0027] refer to Figure 10-17The transmission adjustment component group 03 includes a bottom square rod 31, a gear condition 32 is fixedly connected to the side of the bottom square rod 31, the gear condition 32 is meshed with a large gear cylinder 33, the large gear cylinder 33 is connected to a transmission shaft 36 through a bearing, a ratchet 35 and a pawl 34 are arranged inside the large gear cylinder 33, one end of the transmission shaft 36 is fixedly connected to a transmission end gear 37, the side of the transmission end gear 37 is meshed with a center gear 38, the side of the center gear 38 is provided with an adjustment ring 39, a roller 311, a tension spring 313, an L-shaped plate frame 312 and a guide frame 314, the adjustment ring 39 and the center gear 38 are fixedly connected to a center shaft 310 through a through hole, and a dynamic partition 315 is fixedly connected to the top of the L-shaped plate frame 312.

[0028] One end of the bottom square rod 31 is fixedly connected to the lower moving rod 2132, and two groups of the bottom square rod 31, the gear condition 32, the large gear cylinder 33, the pawl member 34 and the ratchet member 35 are provided, and the two groups of the bottom square rod 31, the gear condition 32, the large gear cylinder 33, the pawl member 34 and the ratchet member 35 are respectively located at the bottom of the two pressure reducing valve assemblies 21, the pawl member 34 is connected to the large gear cylinder 33 through a rotating shaft, and a curved spring is connected to the side of the pawl member 34, and one side of the curved spring is connected to the large gear cylinder 33, and the ratchet member 35 is meshed with the pawl member 34, and the curved spring on the side of the pawl member 34 is used to keep the pawl member 34 and the ratchet member 35 in contact, and the ratchet member 35 is fixedly connected to the transmission shaft 36 through a through hole, and one end of the transmission shaft 36 is connected to the bottom The protective cover 232 is connected, the transmission shaft 36 is connected to the bottom protective cover 232 and the gas buffer chamber 41 through a bearing, the central axis 310 is connected to the gas buffer chamber 41 through a rotating shaft, the two ends of the roller 311 are rotatably connected with a hanger, and the hanger is fixedly connected to the bottom of the L-shaped plate frame 312, the L-shaped plate frame 312 is in sliding contact with the guide frame 314 through a slide groove, the guide frame 314 is connected in the cavity of the gas buffer chamber 41, the tension spring member 313 is connected between the guide frame 314 and the L-shaped plate frame 312, a recessed structure is provided on the adjusting ring 39, the adjusting ring 39 contacts the roller 311, and the movable partition 315 is provided with a ventilation groove of the same size corresponding to the fixed partition 42, and the movable partition 315 is in sliding contact with the gas buffer chamber 41 through the slide groove.

[0029] The gas in the environment will enter the pressure reduction component group 02 through the main air inlet 13, the air pipe between the main air inlet 13 and the air inlet ring 221, and the air inlet ring 221 to reduce the pressure of the gas. The pressure reduction is specifically two-stage pressure reduction. After the pressure reduction is completed, the gas is cached in the cache bin component group 04. Subsequently, the cached gas is input into the end ventilation component 05 through the transmission adjustment component group 03, and the main sensor component 12 is used for detection. After the detection is completed, it is discharged into the normal pressure environment through the exhaust pipe 52.

[0030] Working principle: In actual use, the monitor body 11 is first fixed to the wall or equipment in the monitored environment through the mounting bracket, and then the end of the exhaust pipe 52 away from the ventilation box 51 is connected to the external normal pressure environment, which is mainly used to discharge the monitored gas.

[0031] Before use, unscrew the fixing bolt 233 to remove the top protective cover 231 from the mounting frame seat 234, and then rotate the top adjusting member 2112 to allow the top adjusting member 2112 to move downward on the top valve cover 2110 through the thread. During adjustment, the top inner plate 219, the middle rod assembly 213, the metal inner cylinder 217, the diaphragm member 216, the lower sealing ring 214, and the bottom square rod 31 will move together. At the same time, the upper spring member 218 and the lower spring member 215 will accumulate force and shrink. The downward movement of the diaphragm member 216 is specifically a concave deformation instead of an overall downward movement. The downward movement distance of the top adjusting member 2112 is adjusted , to achieve the purpose of controlling the gas pressure reduction amplitude, after adjusting the position of the top adjusting member 2112, the top protective cover 231 is installed on the mounting frame seat 234 by fixing the bolt member 233, and the top protective cover 231 and the bottom protective cover 232 are partially covered on the outside of the pressure reducing valve assembly 21 and the connectivity detection assembly 22 to improve the sealing of the overall structure of the pressure reducing valve assembly 21 and the connectivity detection assembly 22 in the pressure reducing component group 02, making it more suitable in a high-pressure environment, and the pressure reduction of the gas is detected by three high-pressure resistant pressure gauges 224, so as to facilitate the adjustment of the position of the top adjusting member 2112.

[0032] After the lower sealing ring 214 moves downward, the lower sealing ring 214 will not block the gas axial channel of the valve body 211 and the lower cavity, and the external high-pressure gas will enter the valve body 211 through the intake ring 221, and then enter the lower cavity through the vertical channel of the valve body 211, and then the high-pressure gas will continue to move to the left (such as Figure 7As shown in the figure, the moving high-pressure gas passes through the lower sealing ring 214 and enters the gas axis channel on the left side of the valve body 211, then flows to the next group of pressure-reducing valve components 21, and enters the cavity of the gas buffer chamber 41 through the gas outlet end of the gas outlet ring member 222. At this time, the high-pressure gas is depressurized by the two groups of pressure-reducing valve components 21 and reaches the normal pressure value, and accumulates in the gas buffer chamber 41. The overall structure of the pressure-reducing valve component 21 is similar to the diaphragm-type air pressure valve in the prior art, but the overall assembled structure is different from the prior art. After partial pressure relief, the gas will flow into the upper cavity through the vertical tube 2111. When the pressure rises, the diaphragm component 216 will be lifted up and slowly The lower moving rod 2132 in the middle rod assembly 213 moves upward, and the lower moving rod 2132 drives the lower sealing ring 214 to move upward, thereby blocking the gas axis channel and the lower cavity. The gas pressure reduction is completed through the reciprocating movement of the lower moving rod 2132. In the process of the reciprocating movement of the lower moving rod 2132, the bottom square rod 31 and the gear condition 32 are driven to move together. The movement of the gear condition 32 drives the large gear cylinder 33 to reciprocate clockwise and counterclockwise. The rotation of the large gear cylinder 33 is transmitted to the ratchet wheel 35 through the pawl 34 and the curved spring connected to the side of the pawl 34, so that the ratchet wheel 35 can only rotate clockwise (such as Fig.12 As shown in the figure, as the ratchet wheel 35 rotates, the transmission shaft 36 and the transmission end gear 37 are driven to rotate, and then the adjusting ring 39 is driven to rotate through the center gear 38 and the center shaft 310. When the roller 311 contacts the recessed structure of the adjusting ring 39, the L-shaped plate frame 312 is in the lowest position, and the movable partition 315 connected thereto is connected to the air permeable groove on the fixed partition 42. Part of the normal pressure gas accumulated in the gas buffer chamber 41 will flow into the ventilation box body 51 and contact the main sensor assembly 12 in the ventilation box body 51. The main sensor assembly 12 will The oxygen and carbon dioxide content in the gas is monitored, and the monitoring data will be displayed on the monitor body 11. When the oxygen and carbon dioxide content exceeds or falls below the preset value, the monitor body 11 will send out an audible and visual alarm. When the adjusting ring 39 rotates and the roller 311 contacts the non-recessed structural position of the adjusting ring 39, the roller 311, the L-shaped plate frame 312 and the movable partition 315 will move up, and then the air grooves between the movable partition 315 and the fixed partition 42 will be staggered, and the air grooves will not be connected, so that the depressurized gas in the gas buffer chamber 41 cannot be discharged and accumulates.

[0033] The function of the transmission adjustment component group 03 and the buffer bin component group 04 is to convert the up and down reciprocating movement of the lower movable rod 2132 in the two groups of pressure reducing component groups 02 into a one-way rotation of the adjustment ring 39, thereby allowing the gas originally discharged with a high frequency to be transferred and accumulated. As the adjustment ring 39 continues to rotate, when the roller 311 contacts the recessed structure on the adjustment ring 39, the movable baffle 315 will move downward, allowing the movable baffle 315 to be connected to the air permeable groove on the fixed baffle 42, and the accumulated gas will be released into the ventilation box body 51. At this time, the gas monitored by the main sensor assembly 12 is no longer a high-frequency fluctuating gas, but a relatively stable and continuously flowing airflow. The gas entering the ventilation box body 51 presents a relatively constant state. For the monitoring unit of the main sensor assembly 12, whether it is a monitoring method based on electrochemical principles, optical principles or other sensing mechanisms, it can be accurately performed in a stable gas environment, thereby improving the accuracy of the monitoring data.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A CO2 and O2 gas monitoring instrument suitable for use in a high-pressure environment, comprising a gas monitoring instrument component group (01), the gas monitoring instrument component group (01) comprising a monitoring instrument body (11) and a main sensor assembly (12), the main sensor assembly (12) being installed inside the monitoring instrument body (11), the monitoring instrument body (11) being provided with a main air inlet (13), characterized in that: A pressure reducing component group (02) for reducing the pressure of the monitoring gas is installed inside the gas monitor component group (01); a buffer chamber component group (04) for buffering the monitoring gas is installed on the side of the pressure reducing component group (02); a transmission adjustment component group (03) is arranged inside the buffer chamber component group (04); the transmission adjustment component group (03) controls the discharge of the gas in the buffer chamber component group (04) by driving the structure in the pressure reducing component group (02); and an end vent component (05) having a cavity is installed outside the main sensor component (12); the end vent component (05) is used for circulating and discharging the monitoring gas.

2. According to claim 1, a CO2, O2 gas monitoring instrument suitable for use in a high pressure environment is characterized in that: The pressure reducing component group (02) comprises two groups of pressure reducing valve assemblies (21), wherein the pressure reducing valve assembly (21) comprises a valve body (211), wherein a gas axis channel is provided inside the valve body (211), wherein the bottom of the valve body (211) is connected to a valve bottom shell (212) via a thread, wherein a middle rod assembly (213) is slidably connected inside the valve body (211) via a slide groove, wherein the middle rod assembly (213) comprises an upper fixed rod (2131) and a lower moving rod (2132), wherein the upper fixed rod (2131) and the lower moving rod (2132) are in sliding contact with each other, wherein the lower moving rod (2132) is fixedly connected to a lower sealing ring (214) via a through hole, wherein a lower cavity communicating with the gas axis channel of the valve body (211) is formed between the valve bottom shell (212) and the valve body (211), and wherein the lower sealing ring (214) can be blocked between the gas axis channel and the lower cavity.

3. The CO2 and O2 gas monitoring instrument suitable for use in high pressure environments according to claim 2, characterized in that: The bottom of the lower sealing ring (214) is fixedly connected to a lower spring component (215); one end of the lower spring component (215) away from the lower sealing ring (214) is fixedly connected to the valve bottom shell (212); the top of the valve body component (211) is threadedly connected to a top valve cover (2110); an upper cavity is formed between the top valve cover (2110) and the valve body component (211); a diaphragm component (216) is disposed inside the top valve cover (2110); the diaphragm component (216) is clamped and fixed between the top valve cover (2110) and the valve body component (211).

4. The CO2 and O2 gas monitoring instrument suitable for use in high pressure environments according to claim 3, characterized in that: The diaphragm member (216) is fixedly connected to the metal inner cylinder (217) via a through hole; the metal inner cylinder (217) is fixedly connected to the lower moving rod (2132) via a through hole; one end of the upper fixed rod (2131) is fixedly connected to the top inner disk (219); an upper spring member (218) is provided at the bottom of the top inner disk (219); the upper spring member (218) is fixedly connected between the top inner disk (219) and the metal inner cylinder (217); the valve body member (211) is connected to the vertical tube (2111) via a through hole; and the top valve cover (2110) is connected to the top adjustment member (2112) via a thread.

5. The CO2 and O2 gas monitoring instrument suitable for use in high pressure environments according to claim 4, characterized in that: The lower moving rod (2132) slidably contacts the valve body (211) through the through hole, one end of the top adjusting member (2112) is fixedly connected to the top inner plate (219), and a gas channel is provided inside the vertical tube (2111), and the gas channel communicates with the upper cavity and the gas axis channel.

6. The CO2 and O2 gas monitoring instrument suitable for use in a high pressure environment according to claim 1, characterized in that: The pressure reducing component group (02) comprises a connection detection component (22), the connection detection component (22) comprises an air inlet ring component (221), an air outlet ring component (222), a middle ring component (223) and a high-pressure pressure gauge (224), the middle ring component (223) being connected between two groups of valve body components (211), the air inlet ring component (221) and the air outlet ring component (222) being connected to the two groups of valve body components (211), respectively, the air inlet ring component (221), the air outlet ring component (222) and the middle ring component (223) are all provided with channels on their axes, and the air inlet ring component (221), the air outlet ring component (222) and the middle ring component (223) are connected to the two groups of valve body components (211), respectively. The channels of the ring member (221), the outlet ring member (222) and the middle ring member (223) are connected to the gas axis channels of the two valve body members (211). Three high-pressure pressure gauges (224) are provided, and the three high-pressure pressure gauges (224) are respectively fixedly connected to the side surfaces of the inlet ring member (221), the outlet ring member (222) and the middle ring member (223) through through holes. The high-pressure pressure gauges (224) are used to display the pressure value of the gas circulating in the pressure reducing component group (02). The side surface of the inlet ring member (221) is connected to the main air inlet (13) through a pipeline.

7. The CO2 and O2 gas monitoring instrument suitable for use in a high pressure environment according to claim 1, characterized in that: The pressure reducing component group (02) comprises a reinforced sealing assembly (23), the reinforced sealing assembly (23) comprising a top protective cover (231), a bottom protective cover (232), a fixing bolt member (233) and a mounting frame seat (234), the top protective cover (231) and the bottom protective cover (232) both having a cavity, the mounting frame seat (234) and the fixing bolt member (233) both being provided with two, and the two fixing bolt members (233) and the mounting frame seat (234) being symmetrically distributed on the upper and lower sides of the pressure reducing valve assembly (21), the mounting frame seat ( The air inlet ring member (221), the valve body member (211), the middle ring member (223) and the air outlet ring member (222) are fixedly connected via a through groove, and two fixing bolt members (233) are provided, one of the fixing bolt members (233) is connected to the middle ring member (223) via a thread, and the other fixing bolt member (233) is connected to the middle ring member (223) via a thread, and the top protective cover (231) and the bottom protective cover (232) are respectively connected to the mounting frame seat (234) via two fixing bolt members (233).

8. The CO2 and O2 gas monitoring instrument suitable for use in a high pressure environment according to claim 1, characterized in that: The buffer bin component group (04) comprises a gas buffer bin (41), the gas buffer bin (41) has a cavity inside, the gas buffer bin (41) is provided with an air inlet end and an air outlet end on both sides, the air inlet end of the gas buffer bin (41) is fixedly connected to the air outlet ring member (222), the gas buffer bin (41) is fixedly connected to a fixed partition plate (42) via a groove, the fixed partition plate (42) is provided with a ventilation groove, the end ventilation component (05) comprises a ventilation box body (51) and an exhaust pipe (52), the ventilation box body (51) has a cavity inside, the ventilation box body (51) is fixedly connected to the main sensor component (12) via a through hole, one end of the exhaust pipe (52) is connected to the ventilation box body (51), the other end of the exhaust pipe (52) is connected to the external low-pressure area, and one side of the ventilation box body (51) is connected to the air outlet end of the gas buffer bin (41).

9. The CO2 and O2 gas monitoring instrument suitable for use in a high pressure environment according to claim 1, characterized in that: The transmission adjustment component group (03) comprises a bottom square rod (31), a side of the bottom square rod (31) is fixedly connected with a toothed condition (32), the toothed condition (32) is meshed with a large gear cylinder (33), the large gear cylinder (33) is connected with a transmission shaft (36) via a bearing, a ratchet wheel (35) and a pawl (34) are arranged inside the large gear cylinder (33), one end of the transmission shaft (36) is fixedly connected with a transmission end gear (37), the side of the transmission end gear (37) is meshed with a center gear (38), the side of the center gear (38) is provided with an adjustment ring (39), a roller (311), a tension spring (313), an L-shaped plate frame (312) and a guide frame (314), the adjustment ring (39) and the center gear (38) are fixedly connected with a center shaft (310) via a through hole, and a movable partition (315) is fixedly connected to the top of the L-shaped plate frame (312).

10. The CO2 and O2 gas monitoring instrument suitable for use in high pressure environments according to claim 9, characterized in that: One end of the bottom square rod (31) is fixedly connected to the lower moving rod (2132), and the bottom square rod (31), the gear condition (32), the large gear cylinder (33), the pawl member (34) and the ratchet member (35) are each provided in two groups, and the two groups of the bottom square rod (31), the gear condition (32), the large gear cylinder (33), the pawl member (34) and the ratchet member (35) are respectively located at the bottom of the two pressure reducing valve assemblies (21), and the pawl member (34) The ratchet member (35) is connected to the large gear cylinder member (33) via a rotating shaft, a curved spring is connected to the side of the ratchet member (34), and one side of the curved spring is connected to the large gear cylinder member (33), the ratchet member (35) is meshed with the ratchet member (34), the curved spring on the side of the ratchet member (34) is used to keep the ratchet member (34) and the ratchet member (35) in contact, the ratchet member (35) is fixedly connected to the transmission shaft (36) via a through hole, and one end of the transmission shaft (36) is connected to the bottom of the rotating shaft The transmission shaft (36) is connected to the bottom protective cover (232) and the gas buffer chamber (41) through a bearing, the central shaft (310) is connected to the gas buffer chamber (41) through a rotating shaft, both ends of the roller (311) are rotatably connected to a hanger, and the hanger is fixedly connected to the bottom of the L-shaped plate frame (312), the L-shaped plate frame (312) is in sliding contact with the guide frame (314) through a sliding groove, and the guide frame ( The guide frame (314) is connected to the cavity of the gas buffer chamber (41), the tension spring member (313) is connected between the guide frame (314) and the L-shaped plate frame (312), the adjusting ring member (39) is provided with a recessed structure, the adjusting ring member (39) contacts the roller (311), the movable partition plate (315) is provided with a ventilation groove of the same size as the fixed partition plate (42), and the movable partition plate (315) is in sliding contact with the gas buffer chamber (41) through the sliding groove.

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