Infrared gas analyzer for rock stratum carbon dioxide leakage measurement

Abstract

The utility model discloses an infrared gas analyzer for measuring rock stratum carbon dioxide leakage, which relates to the technical field of infrared gas analyzers and comprises an analyzer main body, a gas inlet pipe and an exhaust pipe are arranged on the front end face of the analyzer main body, and a filtering mechanism matched with the gas inlet pipe and the exhaust pipe is arranged at the front end of the analyzer main body. The filtering mechanism comprises a fixed seat, a turntable, a filter element and a fixed cover, the fixed seat is fixedly mounted on the front end surface of the analyzer main body through bolts, the turntable is mounted at the front end of the fixed seat and is rotationally connected with the fixed seat, the filter element is detachably mounted on the turntable, and sliding chutes matched with the turntable are formed in the side end surfaces of the air inlet pipe and the exhaust pipe. The filter has the advantages of automatically cleaning the filter element and quickly replacing the filter element, and solves the problems that dust is accumulated on equipment due to the fact that dust and other particulate matters enter the analyzer, time and labor are consumed when the filter is frequently replaced, and the continuous monitoring work flow is interrupted in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to infrared gas analyzer technical field, concretely is a kind of infrared gas analyzer for rock stratum carbon dioxide leakage measurement. BACKGROUND

[0002] Carbon dioxide (CO2) as an important greenhouse gas, plays a key role in environmental monitoring, industrial process control, geological exploration and scientific research fields.Especially in geological exploration and rock stratum carbon dioxide leakage measurement, accurately and continuously monitor the concentration of carbon dioxide in rock stratum is essential to assess potential environmental risks and protect public safety.

[0003] In recent years, carbon dioxide analyzer based on non-dispersive infrared principle has been widely used due to its high sensitivity, fast response and good selectivity.Carbon dioxide analyzer utilizes the absorption characteristics of carbon dioxide molecules to specific wavelength infrared light, by air pump to suck air into the air chamber inside the equipment, and then measure the absorption of air to this specific wavelength infrared light to determine the concentration of carbon dioxide.However, in practical application, especially in complex geological environment, such as rock stratum carbon dioxide leakage monitoring, a large amount of dust and other particulate matter may enter the analyzer, causing equipment dust accumulation, affecting sensor performance, and even causing equipment damage.In addition, an external filter is required, but frequent filter replacement not only consumes time and effort, but also interrupts continuous monitoring workflow, reducing work efficiency.Therefore, a kind of infrared gas analyzer for rock stratum carbon dioxide leakage measurement is needed to solve the above problems. SUMMARY

[0004] The utility model aims at providing a kind of infrared gas analyzer for rock stratum carbon dioxide leakage measurement, with the advantages of automatic cleaning filter element and quick replacement filter element, solve the problem of equipment dust accumulation caused by dust and other particulate matter entering the analyzer in prior art, frequent filter replacement consumes time and effort and interrupts continuous monitoring workflow.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of infrared gas analyzer for rock stratum carbon dioxide leakage measurement, including analyzer main body, the front end of the analyzer main body is provided with air inlet pipe and exhaust pipe, the front end of the analyzer main body is provided with the filter mechanism that cooperates with air inlet pipe and exhaust pipe;

[0006] The filtering mechanism comprises a fixed seat, a rotating disc, a filter core and a fixed cover, the fixed seat is fixedly installed at the front end face of the analyzer main body through bolts, the rotating disc is installed at the front end of the fixed seat and is rotationally connected with the fixed seat, the filter core is detachably installed on the rotating disc, the side end faces of the air inlet pipe and the air outlet pipe are provided with sliding grooves matched with the rotating disc, and it is to be noted that there is a certain gap between the sliding grooves and the rotating disc, and the rotating disc can slide back and forth, and the fixed cover is installed at the front end of the rotating disc to fix the filter core.

[0007] As one of the infrared gas analyzers for measuring carbon dioxide leakage in rock strata, the upper end face of the rotating disc is provided with positioning holes matched with the filter core in sliding mode, the side end face of the rotating disc is provided with external threads, the inner end face of the fixed cover is provided with internal threads matched with the rotating disc, and the upper end face of the fixed cover is provided with air permeation holes corresponding to the positions of the positioning holes.

[0008] As one of the infrared gas analyzers for measuring carbon dioxide leakage in rock strata, the positioning holes are arranged around the center circumference of the rotating disc, and the number of the positioning holes is even, and the upper end face of the fixed cover is provided with a knob.

[0009] As one of the infrared gas analyzers for measuring carbon dioxide leakage in rock strata, the filter core is provided with a coarse filter screen, and the lower end of the coarse filter screen is provided with a fine filter screen fixed with the filter core.

[0010] As one of the infrared gas analyzers for measuring carbon dioxide leakage in rock strata, the upper end face and the lower end face of the sliding groove are provided with sealing rings and wave springs, and the sealing rings are elastically connected with the air outlet pipe and the air inlet pipe through the wave springs.

[0011] As one of the infrared gas analyzers for measuring carbon dioxide leakage in rock strata, the inner end face of the sliding groove is provided with a limiting plate for preventing the sealing ring from falling off.

[0012] As one of the infrared gas analyzers for measuring carbon dioxide leakage in rock strata, the edge of the sealing ring is chamfered.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1. The utility model discloses a rotary structure that the rotating disc cooperates with multiple filter elements, combined with the chute design of air inlet pipe, exhaust pipe, realizes the quick switching and back flushing cleaning function of filter element, when the filter element is influenced by dust accumulation and filters the efficiency, the rotating disc can switch the standby filter element to the working position, ensures that the gas is continuously filtered during the detection process, avoids the dust from entering the analyzer inside and causes dust damage, simultaneously, the back flushing effect of exhaust pipe can remove the part dust that adheres on the filter element surface reversely, prolongs the service life of filter element, the grading filtration design of double -deck filter screen further improves the filtration precision, effectively reduces the detection chamber pollution risk, thereby the equipment operation stability and life are improved obviously.

[0015] 2. The utility model discloses a fixed cover and the design of circumferential array positioning hole of screw fixing, make the filter element's dismounting, replacement or cleaning more simple, and the operating personnel only need to rotate fixed cover after taking down the filtering mechanism and can take out the filter element quickly, do not need complex tool or long time shutdown, the symmetrical layout of even number filter elements on the rotating disc and knob design, allow accurate switching filter element position through simple rotating action, ensure that air inlet pipe and exhaust pipe always correspond clean filter element, greatly reduce the equipment maintenance time, this structure solves the problem that traditional filter element replacement process is complicated and influences continuous detection efficiency, is especially suitable for high frequency detection demand under the environment of field rock layer.

[0016] 3. The utility model discloses a sealing ring and wave spring group are provided in the chute, realize the dynamic sealing of rotating disc and gas circuit interface through the elastic pressure, prevent gas leakage, and can provide moderate resistance when filter element switches, avoid the displacement of rotating disc and lead to gas circuit misplacement, the addition of limiting plate further restricts the displacement range of sealing ring, prevents it from falling off, and the rounding treatment of sealing ring edge reduces the friction resistance when rotating disc rotates, makes filter element switching more smooth, these designs solve the detection error problem caused by the lack of air tightness, ensure that the equipment can still operate stably under the vibration or movement working condition, improve the accuracy and reliability of detection result. ACCURACY

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the filtering mechanism and air inlet pipe and exhaust pipe cooperation state schematic diagram of the utility model;

[0019] Figure 3 It is the filtering mechanism and air inlet pipe and exhaust pipe cooperation state front view of the utility model;

[0020] Figure 4 It is the filtering mechanism of the utility model; Figure 3 It is the enlarged view of A place in the middle;

[0021] Figure 5 It is the explosion drawing of the filtering mechanism of the utility model;

[0022] Figure 6 The utility model discloses a schematic diagram of air inlet pipe structure.

[0023] In the drawing: 1, analyzer main body;101, air inlet pipe;1011, chute;1012, sealing ring;1013, wave spring;1014, limiting plate;102, exhaust pipe;2, filtering mechanism;201, fixed seat;202, rotary disc;2021, positioning hole;203, fixed cover;2031, air hole;2032, knob;204, filter element;2041, coarse filter screen;2042, fine filter screen. DETAILED DESCRIPTION

[0024] Please refer to Figures 1-6 An infrared gas analyzer for measuring carbon dioxide leakage of rock stratum, comprising an analyzer main body 1, an air inlet pipe 101 and an exhaust pipe 102 are arranged on the front end face of the analyzer main body 1, and a filtering mechanism 2 is arranged on the front end of the analyzer main body 1 and cooperates with the air inlet pipe 101 and the exhaust pipe 102.

[0025] The filtering mechanism 2 comprises a fixed seat 201, a rotary disc 202, a filter element 204 and a fixed cover 203, the fixed seat 201 is fixedly installed on the front end face of the analyzer main body 1 through bolts, the rotary disc 202 is installed on the front end of the fixed seat 201 and is rotationally connected thereto, the filter element 204 is detachably installed on the rotary disc 202, the side end faces of the air inlet pipe 101 and the exhaust pipe 102 are provided with chutes 1011 that cooperate with the rotary disc 202, and it should be noted that there is a certain gap between the chute 1011 and the rotary disc 202, when the bolts of the fixed seat 201 are removed, the space between the chutes 1011 is sufficient for the rotary disc 202 to slide forward and backward to remove the filtering mechanism 2, and the fixed cover 203 is installed on the front end of the rotary disc 202 to fix the filter element 204.

[0026] The rotary disc 202 drives the filter element 204 to rotate, so that the filter element 204 is rotated to cooperate with the air inlet pipe 101, the air entering the infrared gas analyzer is filtered, the carbon dioxide leaked from the rock stratum carrying a large amount of dust is prevented from entering the main body of the detector to cause dust accumulation and damage to the equipment, the structure of the rotary type filter element 204 is quickly replaced, the working efficiency during continuous detection is greatly improved, and the exhaust pipe 102 blows back the filter element 204, so that the utilization rate of the filter element 204 is improved.

[0027] Further, the upper end face of the rotary disc 202 is provided with a positioning hole 2021 that slidably cooperates with the filter element 204, the side end face of the rotary disc 202 is provided with external threads, the inner end face of the fixed cover 203 is provided with internal threads that cooperate with the rotary disc 202, and the upper end face of the fixed cover 203 is provided with an air hole 2031 that corresponds in position to the positioning hole 2021.

[0028] The fixed cover 203 is fixed on the rotating disc 202 by screwing, so as to press the filter element 204 in the positioning hole 2021, avoid the filter element 204 from shaking, and facilitate quick opening of the fixed cover 203 for replacement or cleaning of each filter element 204, thereby improving the convenience of equipment maintenance.

[0029] Further, the positioning holes 2021 are arranged around the center circumference of the rotating disc 202, and the number of the positioning holes 2021 is even, and the upper end surface of the fixed cover 203 is provided with a knob 2032.

[0030] The rotating disc 202 is conveniently and quickly rotated through the knob 2032, so as to quickly replace the filter element 204, and meanwhile, the fixed cover 203 is conveniently and quickly disassembled, and the structure of the circumferentially arranged positioning holes 2021 enables the rotating disc 202 to replace one filter element 204 for the air inlet pipe 101 and the air outlet pipe 102 every time the rotating disc 202 rotates by a certain angle.

[0031] Further, the filter element 204 is provided with a coarse filter screen 2041, and the lower end of the coarse filter screen 2041 is provided with a fine filter screen 2042 fixed with the filter element 204.

[0032] The coarse filter screen 2041 connects gravel particles, and the fine filter screen 2042 intercepts dust, so that the double-layer filter screen structure improves the stability of dust and impurity filtration, reduces dust accumulation in the detection chamber as much as possible, and improves the service life of the equipment.

[0033] Further, the upper end surface and the lower end surface of the sliding groove 1011 are provided with a sealing ring 1012 and a wave spring 1013, and the sealing ring 1012 is elastically connected with the air outlet pipe 102 and the air inlet pipe 101 through the wave spring 1013.

[0034] The sealing ring 1012 is inserted into the air permeable hole 2031 under the action of the wave spring 1013, seals the joint, improves the resistance of the rotating disc 202, thereby fixing the rotating disc 202, avoids self-rotation of the rotating disc 202 during rotation, causes airway obstruction of the air inlet pipe 101 or the air outlet pipe 102, and improves the stability of the equipment.

[0035] Further, the inner end surface of the sliding groove 1011 is provided with a limiting plate 1014 for preventing the sealing ring 1012 from falling off.

[0036] The limiting plate 1014 limits the sliding stroke of the sealing ring 1012, avoids the sealing ring 1012 from falling off after the rotating disc 202 is removed, and improves the stability of the equipment.

[0037] Further, the edge of the sealing ring 1012 is chamfered.

[0038] Rotating the rotating disc 202, the fixed cover 203 and the rotating disc 202 extrude the sealing ring 1012, the sealing ring 1012 extrudes the wave spring 1013, the rotating disc 202 is released from the limiting, the next set of filter cartridges 204 can be replaced, and the convenience of replacing the filter cartridges 204 is improved.

[0039] In use, the fixed seat 201 is firmly installed at the front end of the analyzer main body 1 through bolts, at this time, the rotating disc 202 is installed at the front end of the fixed seat 201 and rotationally connected with the fixed seat 201, the filter cartridges 204 are installed on the rotating disc 202, and the fixed cover 203 is installed at the front end of the rotating disc 202 and used for fixing the filter cartridges 204, in use, the rotating disc 202 is rotated to drive the filter cartridges 204 on the rotating disc 202 to rotate, the filter cartridges 204 are rotated to be in alignment with the air inlet pipe 101, at this time, the carbon dioxide gas leaked from the rock stratum and the air entrained by the carbon dioxide gas enter the air inlet pipe 101, and before entering the infrared gas analyzer main body 1, the carbon dioxide gas is filtered by the filter cartridges 204, the coarse filter screen 2041 in the filter cartridges 204 intercepts the gravel particles, and the fine filter screen 2042 intercepts the dust, the double-layer filter screen structure effectively filters the dust and impurities, avoids a large amount of dust from entering the detection instrument main body to cause the air chamber in the equipment to be damaged by dust, and in the detection process, the gas discharged from the air outlet pipe 102 also performs back blowing on the used filter cartridges 204, so that the reusability of the filter cartridges 204 is improved, when the filter cartridges 204 need to be replaced after being used for a period of time, the rotating disc 202 is quickly rotated by rotating the knob 2032 at the upper end face of the fixed cover 203, because the positioning holes 2021 are arranged around the center of the rotating disc 202 and the number of the positioning holes 2021 is even, every time the rotating disc 202 is rotated by a certain angle, one filter cartridge 204 can be replaced for the air inlet pipe 101 and the air outlet pipe 102, the upper end face and the lower end face of the sliding groove 1011 are provided with the sealing ring 1012 and the wave spring 1013, the sealing ring 1012 is inserted into the air permeable hole 2031 under the action of the wave spring 1013, the interface is sealed, the rotating disc 202 is fixed, the rotating disc 202 is prevented from rotating to cause the air inlet pipe 101 or the air outlet pipe 102 to be not smooth, the limiting plate 1014 arranged at the inner end face of the sliding groove 1011 can prevent the sealing ring 1012 from falling off, and the rounded corner processing of the edge of the sealing ring 1012 enables the fixed cover 203 and the rotating disc 202 to extrude the sealing ring 1012 when the rotating disc 202 is forcibly rotated, the sealing ring 1012 extrudes the wave spring 1013, the rotating disc 202 is released from the limiting, and the next set of filter cartridges 204 can be replaced smoothly, and the convenience of replacing the filter cartridges 204 is improved.

[0040] The preferred embodiments of the utility model are described above only, and are not used to limit the utility model, any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An infrared gas analyzer for measuring carbon dioxide leakage from a rock formation, comprising an analyzer body (1), characterized in that: The front end surface of the analyzer body (1) is provided with an air inlet pipe (101) and an air outlet pipe (102), and the front end of the analyzer body (1) is provided with a filtering mechanism (2) matched with the air inlet pipe (101) and the air outlet pipe (102); The filtering mechanism (2) comprises a fixed seat (201), a rotating disc (202), a filter element (204) and a fixed cover (203), the fixed seat (201) is fixedly installed on the front end surface of the analyzer body (1) by bolts, the rotating disc (202) is rotatably connected to the front end of the fixed seat (201), the filter element (204) is detachably installed on the rotating disc (202), the side end surfaces of the air inlet pipe (101) and the air outlet pipe (102) are provided with sliding grooves (1011) matched with the rotating disc (202), and the fixed cover (203) is installed on the front end of the rotating disc (202) to fix the filter element (204).

2. An infrared gas analyzer for measuring carbon dioxide leakage from a rock formation according to claim 1, characterized in that: The upper end surface of the rotating disc (202) is provided with positioning holes (2021) slidably matched with the filter element (204), the side end surface of the rotating disc (202) is provided with external threads, the inner end surface of the fixed cover (203) is provided with internal threads matched with the rotating disc (202), and the upper end surface of the fixed cover (203) is provided with air holes (2031) corresponding in position to the positioning holes (2021).

3. An infrared gas analyzer for measuring carbon dioxide leakage from a rock formation according to claim 2, characterized in that: The positioning holes (2021) are arranged in an array around the center circumference of the rotating disc (202), the number of the positioning holes (2021) is even, and the upper end surface of the fixed cover (203) is provided with a knob (2032).

4. An infrared gas analyzer for measuring carbon dioxide leakage from a rock formation according to claim 1, wherein: The filter element (204) is provided with a coarse filter screen (2041) therein, and the lower end of the coarse filter screen (2041) is provided with a fine filter screen (2042) fixed with the filter element (204).

5. An infrared gas analyzer for measuring carbon dioxide leakage from a rock formation according to claim 1, wherein: The upper end surface and the lower end surface of the sliding groove (1011) are provided with sealing rings (1012) and wave springs (1013), and the sealing rings (1012) are elastically connected to the air outlet pipe (102) and the air inlet pipe (101) through the wave springs (1013).

6. An infrared gas analyzer for measuring carbon dioxide leakage from a rock formation according to claim 5, characterized in that: The inner end surface of the sliding groove (1011) is provided with a limiting plate (1014) for preventing the sealing ring (1012) from falling off.

7. An infrared gas analyzer for measuring carbon dioxide leakage from a rock formation according to claim 6, characterized in that: The edge of the sealing ring (1012) is chamfered.

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