Calibration device for methane sensor

Abstract

The utility model belongs to the technical field of sensor calibration, and particularly relates to a calibration device for a methane sensor, which comprises a shell, a support plate, a mounting plate, a control panel, a plurality of storage tanks, a support disc, an adjusting component I, an adjusting component II, a sensor connecting seat, an adjusting component III and a plurality of conveying pipes, a supporting column is fixedly installed in the shell, the supporting discs are rotatably installed on the supporting column, the multiple storage tanks are installed on the supporting discs in a clamped mode and arranged with the supporting column as the center, the supporting plate is rotatably installed in the shell, and the first adjusting assembly is arranged on the supporting plate and connected with the supporting column. The sensor connecting base is fixedly installed on the supporting plate, and the second adjusting assembly is arranged on the supporting plate and connected with the sensor connecting base. The system has the advantages of reasonable design, simple operation, high calibration efficiency, good accuracy, strong anti-interference capability, high safety and the like, and has high practical value and popularization value.

Description

Technical Field

[0001] This utility model relates to the field of sensor calibration technology, and in particular to a calibration device for a methane sensor. Background Technology

[0002] Methane sensors play a crucial role in many fields, including modern industrial production and environmental monitoring, with their accuracy directly impacting safe production and environmental quality control. Accurate measurement of methane concentration enables the timely detection of potential safety hazards, preventing serious accidents such as explosions, and is also significant for environmental protection and the rational use of resources. Therefore, regular and accurate calibration of methane sensors is a key step in ensuring their reliable operation.

[0003] Traditional methane sensor calibration devices suffer from numerous drawbacks. From an efficiency standpoint, their structural design is often inadequate, leading to cumbersome and complex procedures for connecting the sensor to the calibration gas source. This requires significant time and effort from operators, drastically reducing calibration efficiency. Regarding accuracy, existing devices are susceptible to external interference, such as electromagnetic interference prevalent in industrial environments. This negatively impacts signal transmission and measurement results during calibration, significantly compromising accuracy. Furthermore, some calibration devices lack precision in switching and delivering different concentrations of methane gas, further reducing calibration reliability.

[0004] Furthermore, existing calibration devices have significant shortcomings in terms of safety and environmental protection. During methane sensor calibration, gas leaks not only pollute the calibration environment but may also lead to safety accidents. However, most traditional devices lack effective gas adsorption and treatment mechanisms, making it impossible to address this problem promptly. Given the deficiencies of traditional methane sensor calibration devices in terms of efficiency, accuracy, safety, and environmental friendliness, the development of a new, efficient, accurate, safe, and environmentally friendly calibration device is urgently needed, which lays the foundation for this invention.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings mentioned in the background section by providing a calibration device for a methane sensor.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a calibration device for a methane sensor, comprising a housing, a support plate, a mounting plate, a control panel, multiple storage tanks, a support plate, an adjustment component one, an adjustment component two, a sensor connector, an adjustment component three, and multiple delivery pipes;

[0008] A support column is fixedly installed inside the housing. Support plates are rotatably mounted on the support column. Multiple storage tanks are snapped onto the support plates and centered on the support column. A support plate is rotatably installed inside the housing. Adjustment component one is mounted on the support plate and connected to the support column. A sensor connector is fixedly mounted on the support plate. Adjustment component two is mounted on the support plate and connected to the sensor connector. Adjustment component three is mounted on the inner wall of the bottom of the housing and engages with the support plate. Multiple delivery pipes are fixedly mounted on the inner side wall of the housing and centered on the support column. The ends of the multiple delivery pipes furthest from the support column extend outside the housing and are fixedly fitted with couplings. The ends of the multiple delivery pipes closest to each other are all facing upwards. A mounting groove is provided on the top of the housing. A damping shaft is rotatably mounted on the inner wall of the mounting groove. A mounting plate is radially fixed on the damping shaft, and a control panel is embedded and fixedly mounted on the mounting plate.

[0009] Preferably, the adjustment assembly includes a mounting base, a motor, a drive gear, a driven gear, and a rotating sleeve. The rotating sleeve is rotatably mounted on the support column, and the driven gear is fixedly mounted on the rotating sleeve. The mounting base is fixedly mounted on the top of the support column, and the motor is fixedly mounted on the bottom side of the mounting base. The drive gear that meshes with the driven gear is fixedly mounted on the output shaft of the motor.

[0010] Preferably, the second adjustment component includes an electric cylinder, a lifting ring, and a sleeve. The sleeve is axially and slidably installed on the sensor connector, the lifting ring is fixedly installed on the sleeve, the electric cylinder is fixedly installed on the support plate, and the working end of the electric cylinder is fixedly installed on the top side of the lifting ring.

[0011] Preferably, the adjustment component three includes a second motor, a drive gear, and a gear disc. The gear disc is fixedly installed on the outer side of the support disc, and the second motor is fixedly installed on the bottom inner wall of the housing. The drive gear meshing with the gear disc is fixedly sleeved on the output shaft of the second motor.

[0012] Preferably, the top of the housing has a rectangular opening, and a top cover is hinged and installed inside the rectangular opening.

[0013] Preferably, the side wall of the housing has an arc-shaped opening, an arc-shaped groove is formed inside the arc-shaped opening, and an arc-shaped plate adapted to the arc-shaped opening is slidably installed inside the arc-shaped groove.

[0014] Preferably, the support plate has a circular opening with two slots inside. Each slot has a locking block, and the same mesh cylinder containing activated carbon particles is fixedly installed on the two locking blocks.

[0015] Preferably, handles are provided on the top side of the top cover, the mounting plate, the outer arc surface of the arc plate, and the top of the mesh cylinder.

[0016] Preferably, both motor one and motor two are servo motors.

[0017] Preferably, the same electromagnetic shielding layer is provided on the inner wall of the housing, the inner arc surface of the arc plate, and the bottom side of the top cover.

[0018] The beneficial effects of this utility model are:

[0019] By rationally designing the structure of the shell, support plate, mounting plate, control panel, multiple storage tanks, support plate, adjustment component one, adjustment component two, sensor connection seat, sleeve, adjustment component three, and multiple delivery pipes, this device enables convenient and quick calibration of methane sensors, improving calibration efficiency and accuracy. Simultaneously, by incorporating an electromagnetic shielding layer, the influence of external electromagnetic interference on the calibration process is effectively reduced, further enhancing the reliability of calibration results. Furthermore, the use of an activated carbon particle mesh can adsorb any methane gas that may leak during the methane sensor calibration process, ensuring a clean calibration environment and improving operational safety. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a calibration device for a methane sensor proposed in this utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0023] Figure 3 Exploded view of the second adjustment component, sleeve, sensor connector, delivery pipe, union and storage tank of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the support plate, adjustment component 1, support column, circular opening, slot, sensor connector and electric cylinder part proposed in this utility model;

[0025] Figure 5 for Figure 4 A schematic diagram of a partial three-dimensional structure;

[0026] Figure 6 This is a schematic diagram of the structure of the three parts of the present invention: the support plate and the adjustment component.

[0027] Figure 7 This is a schematic diagram of the structure of the mesh cylinder, the locking block, and the handle part proposed in this utility model.

[0028] In the diagram: 1. Shell; 101. Electromagnetic shielding layer; 11. Arc plate; 12. Top cover; 13. Mounting plate; 131. Control panel; 14. Support plate; 15. Conveying pipe; 16. Support column; 2. Rotary sleeve; 21. Driven gear; 22. Motor 1; 221. Mounting base; 23. Drive gear; 3. Sensor connector; 31. Lifting ring; 32. Sleeve; 33. Electric cylinder; 4. Support plate; 41. Gear plate; 42. Motor 2; 43. Drive gear; 5. Storage tank; 6. Mesh cylinder. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Reference Figure 1-7 A calibration device for a methane sensor includes a housing 1, a support plate 14, a mounting plate 13, a control panel 131, multiple storage tanks 5, a support plate 4, a sensor connector 3, and multiple delivery pipes 15. A support column 16 is fixedly installed inside the housing 1. The support plates 4 are all rotatably mounted on the support column 16. The multiple storage tanks 5 are all snapped onto the support plate 4 and are centered on the support column 16. The support plate 14 is rotatably installed inside the housing 1. The sensor connector 3 is fixedly installed on the support plate 14. The multiple delivery pipes 15 are all fixedly installed on the inner side wall of the housing 1 and are centered on the support column 16. The ends of the multiple delivery pipes 15 away from the support column 16 extend to the outside of the housing 1 and are fixedly installed with a swivel joint.

[0031] A rotating sleeve 2 is rotatably mounted on the support column 16, and a driven gear 21 is fixedly mounted on the rotating sleeve 2. A mounting base 221 is fixedly mounted on the top of the support column 16, and a motor 22 is fixedly mounted on the bottom side of the mounting base 221. A driving gear 23 that meshes with the driven gear 21 is fixedly mounted on the output shaft of the motor 22. The motor 22 can control the support plate 14 to rotate around the support column 16 as needed, thereby adjusting the relative position between the sensor connection seat 3, the storage tank 5, and the delivery pipe 15.

[0032] A sleeve 32 is axially sealed and slidably installed on the sensor connector 3. The ends of multiple conveying pipes 15 that are close to each other are all set upward and adapted to the sleeve 32. A lifting ring 31 is fixedly installed on the sleeve 32. An electric cylinder 33 is fixedly installed on the support plate 14. The working end of the electric cylinder 33 is fixedly installed on the top side of the lifting ring 31. It can control the sleeve 32 to slide along the axial direction of the sensor connector 3 as needed, so as to facilitate the connection to the end of the conveying pipe 15 or the storage tank 5 directly below it.

[0033] A geared disc 41 is fixedly installed on the outer side of the support plate 4, and a motor 42 is fixedly installed on the bottom inner wall of the housing 1. A drive gear 43 that meshes with the geared disc 41 is fixedly sleeved on the output shaft of the motor 42. The turntable can be controlled to rotate as needed, thereby adjusting the position of the storage tank 5 and making it easier to control the corresponding storage tank 5 to move to the position directly below the sensor connection seat 3.

[0034] The top of the housing 1 has a mounting groove, and a damping shaft is rotatably mounted on the inner wall of the mounting groove. The mounting plate 13 is radially fixed on the damping shaft, and the control panel 131 is embedded and fixedly mounted on the mounting plate 13. This allows the operator to adjust the tilt angle of the control panel as needed, thus adapting well to the usage habits of different operators.

[0035] In order to facilitate precise control of the rotation angle of the support plate 14 and the turntable based on the support column 16, both motor 22 and motor 42 are servo motors.

[0036] In this embodiment, in order to facilitate the installation of the methane sensor on the sensor connector 3 and to facilitate the removal, placement and replacement of the storage tank 5, a rectangular opening is provided on the top of the housing 1, and a top cover 12 is hinged in the rectangular opening. An arc-shaped opening is provided on the side wall of the housing 1, and an arc-shaped groove is provided in the arc-shaped opening. An arc-shaped plate 11 that matches the arc-shaped opening is slidably installed in the arc-shaped groove.

[0037] In this embodiment, in order to adsorb methane gas that may leak during the methane sensor calibration process, a circular opening is provided on the support plate 14, and two slots are provided in the circular opening. Each slot is fitted with a card block, and the same mesh cylinder 6 containing activated carbon particles is fixedly installed on the two card blocks.

[0038] In this embodiment, in order to facilitate the operation of the top cover 12, the mounting plate 13, the arc plate 11, and the mesh cylinder 6, handles are provided on the top side of the top cover 12, the mounting plate 13, the outer arc surface of the arc plate 11, and the top of the mesh cylinder 6.

[0039] In this embodiment, in order to effectively avoid external electromagnetic interference during the methane sensor calibration process, the same electromagnetic shielding layer 101 is provided on the inner wall of the housing 1, the inner arc surface of the arc plate 11, and the bottom side of the top cover 12.

[0040] The circuits, electronic components, and module mechanisms involved all employ existing technologies, which can be fully implemented by those skilled in the art, and need no further explanation. The content protected by this application does not involve any improvement to the software, circuits, or methods.

[0041] Working principle: When in use, first connect the power supply. The operator can control the operation of each component through the control panel 131. The operator can open the top cover 12, install the methane sensor to be calibrated on the sensor connector 3, and close the top cover 12. Then, the operator can control the motor 42 to start through the control panel 131, drive the gear 43 to drive the gear plate 41 to rotate, thereby adjusting the position of the storage tank 5 on the support plate 4, so that the required storage tank 5 moves to directly below the sensor connector 3. When the storage tank 5 is directly below the sensor connector 3, the electric cylinder 33 is activated, pushing the lifting ring 31 and the sleeve 32 to slide along the axial direction of the sensor connector 3, so that the sleeve 32 connects with the outlet of the storage tank 5, thereby realizing the delivery of methane gas.

[0042] When air is supplied through the delivery pipe 15, the motor 22 is started by controlling the control panel 131, so that the drive gear 23 drives the driven gear 21 to rotate, thereby driving the rotating sleeve 2 and the support plate 14 to rotate around the support column 16. This allows the sensor connector 3 to be adjusted to the position directly above the air outlet of the required delivery pipe 15. Then, the electric cylinder 33 is started to control the sleeve 32 to connect with the delivery pipe 15.

[0043] During the calibration process, the operator can monitor the calibration data in real time through the control panel 131 and make adjustments as needed. When it is necessary to replace the storage tank 5, the operator can slide the arc plate 11 to open the arc opening, making it convenient to pick up, put in and replace the storage tank 5. At the same time, the electromagnetic shielding layer 101 can effectively prevent the device from being affected by external electromagnetic interference during the methane sensor calibration operation, ensuring the accuracy of the calibration results. In addition, the mesh cylinder 6 containing activated carbon particles can adsorb and treat the methane gas that may leak during the methane sensor calibration process, which not only ensures the cleanliness of the calibration environment but also improves the safety of the operation.

[0044] The calibration device for a methane sensor provided by this utility model has been described in detail above. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A calibration device for a methane sensor, characterized in that, It includes a housing (1), a support plate (14), a mounting plate (13), a control panel (131), multiple storage tanks (5), a support plate (4), an adjustment assembly one, an adjustment assembly two, a sensor connector (3), an adjustment assembly three, and multiple delivery pipes (15); A support column (16) is fixedly installed inside the housing (1). All support plates (4) are rotatably mounted on the support column (16). Multiple storage tanks (5) are snapped onto the support plate (4) and centered on the support column (16). A support plate (14) is rotatably mounted inside the housing (1). An adjustment assembly one is mounted on the support plate (14) and connected to the support column (16). A sensor connector (3) is fixedly mounted on the support plate (14). An adjustment assembly two is mounted on the support plate (14) and connected to the sensor connector (3). An adjustment assembly three is mounted on the inner wall of the bottom of the housing (1) and connected to the support column (16). The support plate (4) meshes with each other, and multiple conveying pipes (15) are fixedly installed on the inner side wall of the housing (1) and set around the support column (16). The ends of the multiple conveying pipes (15) away from the support column (16) extend to the outside of the housing (1) and are fixedly installed with a live joint. The ends of the multiple conveying pipes (15) that are close to each other are set upward and are adapted to the sensor connection seat (3). The top of the housing (1) is provided with a mounting groove. A damping rotating shaft is installed on the inner wall of the mounting groove. The mounting plate (13) is radially fixed on the damping rotating shaft, and the control panel (131) is embedded and fixedly installed on the mounting plate (13).

2. The calibration device for a methane sensor according to claim 1, characterized in that: The adjustment component includes a mounting base (221), a motor (22), a drive gear (23), a driven gear (21), and a rotating sleeve (2). The rotating sleeve (2) is rotatably mounted on the support column (16), and the driven gear (21) is fixedly mounted on the rotating sleeve (2). The mounting base (221) is fixedly mounted on the top of the support column (16), and the motor (22) is fixedly mounted on the bottom side of the mounting base (221). The drive gear (23) that meshes with the driven gear (21) is fixedly mounted on the output shaft of the motor (22). The motor (22) is a servo motor.

3. The calibration device for a methane sensor according to claim 1, characterized in that: The second adjustment component includes an electric cylinder (33), a lifting ring (31), and a sleeve (32). The sleeve (32) is axially sealed and slidably installed on the sensor connector (3). The lifting ring (31) is fixedly installed on the sleeve (32). The electric cylinder (33) is fixedly installed on the support plate (14). The working end of the electric cylinder (33) is fixedly installed on the top side of the lifting ring (31).

4. The calibration device for a methane sensor according to claim 1, characterized in that: The adjustment component three includes a second motor (42), a drive gear (43) and a gear disc (41). The gear disc (41) is fixedly installed on the outer side of the support plate (4). The second motor (42) is fixedly installed on the bottom inner wall of the housing (1). The drive gear (43) meshing with the gear disc (41) is fixedly sleeved on the output shaft of the second motor (42). The second motor (42) is a servo motor.

5. The calibration device for a methane sensor according to claim 1, characterized in that: The top of the shell (1) has a rectangular opening, and a top cover (12) is hinged inside the rectangular opening. The side wall of the shell (1) has an arc-shaped opening, and an arc-shaped groove is opened inside the arc-shaped opening. An arc-shaped plate (11) that matches the arc-shaped opening is slidably installed inside the arc-shaped groove. The support plate (14) has a circular opening, and two slots are opened inside the circular opening. Each slot has a locking block, and the same mesh cylinder (6) containing activated carbon particles is fixedly installed on the two locking blocks.

6. The calibration device for a methane sensor according to claim 5, characterized in that: Handles are provided on the top side of the top cover (12), on the mounting plate (13), on the outer arc surface of the arc plate (11), and on the top of the mesh cylinder (6).

7. A calibration device for a methane sensor according to claim 5, characterized in that: The same electromagnetic shielding layer (101) is provided on the inner wall of the shell (1), the inner arc surface of the arc plate (11), and the bottom side of the top cover (12).

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