Gas calibration device for sensor

Abstract

The utility model relates to the technical field of gas calibration for a sensor, in particular to a gas calibration device for a sensor, which is provided with a filtering mechanism and a ratchet mechanism, so that in the gas calibration process of the sensor, entering air can be filtered, the influence of sand wind on a detection result is reduced, and the detection accuracy is improved. The detection precision is improved; comprising a calibration mechanism; the device further comprises a filtering mechanism, an exhaust mechanism, a display mechanism, a detection mechanism and two ratchet wheel mechanisms, the filtering mechanism is installed at the right end of the calibration mechanism, the exhaust mechanism is installed at the left end of the calibration mechanism, the display mechanism is installed at the upper end of the calibration mechanism, the detection mechanism is installed on the calibration mechanism, and the two ratchet wheel mechanisms are installed on the detection mechanism. The calibration mechanism is used for ventilation, the filtering mechanism is used for air intake, the exhaust mechanism is used for exhaust, the display mechanism is used for display, the detection mechanism is used for detection, and the ratchet mechanism is used for protection.

Description

Technical Field

[0001] This utility model relates to the technical field of gas calibration for sensors, and in particular to a gas calibration device for sensors. Background Technology

[0002] Insertion-type pipeline gas flow sensors are widely used for measuring gas flow in various industrial pipelines due to their characteristics of low pressure loss, large measuring range, high accuracy, and almost unaffected by parameters such as gas density, pressure, and temperature when measuring gas flow under working conditions. They are a relatively advanced and ideal gas flow meter. The accuracy of the sensor measurement is ensured by using a gas flow sensor calibration device.

[0003] In existing gas calibration devices for sensors, such as the gas flow sensor calibration device disclosed in utility model patent application number 202222692149.3, the air valve first regulates the flow rate of gas entering the inlet pipe. If the gas flow rate into the inlet pipe is large, the airflow impacts the rotating blade. If the gas flow rate into the inlet pipe is small, the impact force on the rotating blade is small. The rotating rod is driven by a motor to rotate, thereby causing the rotating blade and the rotating shaft to rotate, thus dispersing the airflow and preventing the airflow from being too concentrated, which would impact the sensor rod and cause measurement errors, affecting the use of the sensor rod. The dispersed gas, under the action of two gas rectifiers, makes the gas flow rate more stable and the calibration accuracy higher. By collecting data from a standard gas flow sensor and comparing it with the data on the display of the gas flow sensor under test, the accuracy of the gas flow sensor under test is determined, and thus it is calibrated.

[0004] However, during the gas calibration process used for sensors, dust mixed in with the inhaled gas can strike and flip the blade shaft, leading to inaccurate calibration. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a gas calibration device for sensors, which filters the incoming air during the gas calibration process by setting a filter mechanism and a ratchet mechanism, thereby reducing the impact of wind and sand on the detection results and improving the detection accuracy.

[0006] This utility model discloses a gas calibration device for a sensor, including a calibration mechanism; it also includes a filtering mechanism, an exhaust mechanism, a display mechanism, a detection mechanism, and two sets of ratchet mechanisms. The filtering mechanism is installed at the right end of the calibration mechanism, the exhaust mechanism is installed at the left end of the calibration mechanism, the display mechanism is installed at the upper end of the calibration mechanism, the detection mechanism is installed on the calibration mechanism, and the two sets of ratchet mechanisms are installed on the detection mechanism.

[0007] The calibration mechanism provides ventilation, the filtration mechanism provides air intake, the exhaust mechanism provides exhaust, the display mechanism provides display, the detection mechanism provides detection, and the ratchet mechanism provides protection. Air intake is achieved through the filtration mechanism, airflow is passed through the calibration mechanism, airflow impact is detected by the airflow impact detection mechanism, the ratchet mechanism protects the motor, the display mechanism shows the detection results, and the exhaust mechanism provides exhaust. This allows for filtration of the incoming air during the gas calibration process for the sensor, reducing the impact of wind and sand on the detection results and improving detection accuracy.

[0008] Preferably, the calibration mechanism includes a calibration chamber and two sets of gas rectifiers, which are installed inside the calibration chamber; air flows through the calibration chamber and is rectified by the gas rectifiers.

[0009] Preferably, the filtration mechanism includes an air inlet pipe, an air valve, a filter compartment, and a filter screen. The air inlet pipe is installed at the right end of the calibration box, the air valve is installed on the air inlet pipe, the filter compartment is installed at the right end of the air inlet pipe, and the filter screen is slidably installed inside the filter compartment. Air enters through the air inlet pipe, the air valve controls the amount of air entering, and the filter screen filters the incoming air.

[0010] Preferably, the exhaust mechanism includes an exhaust pipe and an electric control valve. The exhaust pipe is installed at the left end of the calibration chamber, and the electric control valve is installed on the exhaust pipe. Air is discharged through the exhaust pipe, and the discharge volume is controlled by the electric control valve.

[0011] Preferably, the display mechanism includes a sensor rod and a display meter. The sensor rod is installed on the upper end of the calibration box, and the display meter is installed on the sensor rod. Data is transmitted through the sensor rod and displayed through the display meter.

[0012] Preferably, the testing mechanism includes a rotating blade shaft and a motor. The rotating blade shaft is rotatably mounted on the calibration chamber, and the motor is mounted at the front end of the calibration chamber. The output end of the motor is connected to the input end of the rotating blade shaft. The rotating blade shaft is rotated by turning on the motor to drive the rotating blade shaft and impact the air intake for testing.

[0013] Preferably, the ratchet mechanism includes a ratchet ring and four sets of teeth. The ratchet ring is installed inside the calibration box, and the four sets of teeth are rotated on the tilting blade shaft by springs. The teeth cooperate with the ratchet ring to make the tilting blade shaft rotate in one direction, ensuring that the air intake impact will not damage the motor.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: air is introduced through a filtration mechanism, air is passed through a calibration mechanism, detection is performed through a wind impact detection mechanism, the motor is protected through a ratchet mechanism, the detection results are displayed through a display mechanism, and exhaust is performed through an exhaust mechanism. Thus, during the gas calibration process for the sensor, the incoming air can be filtered, reducing the impact of wind and sand on the detection results and improving the detection accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0016] Figure 2 This is a first frontal sectional isometric structural schematic diagram of this utility model;

[0017] Figure 3 This is a second frontal sectional isometric structural schematic diagram of this utility model;

[0018] Figure 4 This is an enlarged axonometric structural diagram of the filter mechanism of this utility model, viewed from the front.

[0019] The following are labels in the attached diagram: 1. Calibration mechanism; 11. Calibration chamber; 12. Gas rectifier; 2. Filtration mechanism; 21. Inlet pipe; 22. Air valve; 23. Filter compartment; 24. Filter screen; 3. Exhaust mechanism; 31. Exhaust pipe; 32. Electric control valve; 4. Display mechanism; 41. Sensor rod; 42. Display meter; 5. Detection mechanism; 51. Rotating blade shaft; 52. Motor; 6. Ratchet mechanism; 61. Ratchet ring; 62. Tooth. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0021] like Figures 1 to 4 As shown, a gas calibration device for a sensor includes a calibration mechanism 1, a filter mechanism 2, an exhaust mechanism 3, a display mechanism 4, a detection mechanism 5, and two sets of ratchet mechanisms 6. The filter mechanism 2 is installed at the right end of the calibration mechanism 1, the exhaust mechanism 3 is installed at the left end of the calibration mechanism 1, the display mechanism 4 is installed at the upper end of the calibration mechanism 1, the detection mechanism 5 is installed on the calibration mechanism 1, and the two sets of ratchet mechanisms 6 are installed on the detection mechanism 5.

[0022] The calibration mechanism 1 provides ventilation, the filter mechanism 2 provides air intake, the exhaust mechanism 3 provides exhaust, the display mechanism 4 provides display, the detection mechanism 5 provides detection, and the ratchet mechanism 6 provides protection.

[0023] The calibration mechanism 1 includes a calibration chamber 11 and two sets of gas rectifiers 12, which are installed inside the calibration chamber 11.

[0024] The filtration mechanism 2 includes an air inlet pipe 21, an air valve 22, a filter chamber 23, and a filter screen 24. The air inlet pipe 21 is installed at the right end of the calibration box 11, the air valve 22 is installed on the air inlet pipe 21, the filter chamber 23 is installed at the right end of the air inlet pipe 21, and the filter screen 24 is slidably installed in the filter chamber 23.

[0025] The exhaust mechanism 3 includes an exhaust pipe 31 and an electric control valve 32. The exhaust pipe 31 is installed on the left end of the calibration box 11, and the electric control valve 32 is installed on the exhaust pipe 31.

[0026] The display mechanism 4 includes a sensor rod 41 and a display meter 42. The sensor rod 41 is installed on the upper end of the calibration box 11, and the display meter 42 is installed on the sensor rod 41.

[0027] The testing mechanism 5 includes a rotating blade shaft 51 and a motor 52. The rotating blade shaft 51 is rotatably mounted on the calibration chamber 11, and the motor 52 is mounted at the front end of the calibration chamber 11. The output end of the motor 52 is connected to the input end of the rotating blade shaft 51.

[0028] The ratchet mechanism 6 includes a ratchet ring 61 and four sets of teeth 62. The ratchet ring 61 is installed inside the calibration box 11, and the four sets of teeth 62 are rotated on the flip-off blade shaft 51 by springs.

[0029] Air enters through the intake pipe 21, the intake volume is controlled by the air valve 22, the incoming air is filtered by the filter screen 24, the air flows through the calibration chamber 11, the air is rectified by the gas rectifier 12, the rotating blade shaft 51 is driven by the motor 52 to rotate and impact the incoming air for detection, the rotating blade shaft 51 is rotated in one direction by the teeth 62 and the ratchet ring 61 to ensure that the incoming air impact will not damage the motor 52, the data is transmitted through the sensor rod 41 and displayed on the display table 42, the air is discharged through the exhaust pipe 31 and the discharge volume is controlled by the electric control valve 32. Thus, during the gas calibration process for the sensor, the incoming air can be filtered to reduce the impact of wind and sand on the detection results and improve the detection accuracy.

[0030] like Figures 1 to 4 As shown, this utility model discloses a gas calibration device for sensors. During operation, air enters through the air inlet pipe 21, the air intake is controlled by the air valve 22, the air is filtered through the filter screen 24, the air flows through the calibration chamber 11, the air is rectified by the gas rectifier 12, the rotating blade shaft 51 is driven by the motor 52 to rotate and impact the incoming air for detection, the rotating blade shaft 51 is rotated in one direction by the teeth 62 and the ratchet ring 61 to ensure that the incoming air impact will not damage the motor 52, the data is transmitted through the sensor rod 41 and displayed on the display table 42, the air is discharged through the exhaust pipe 31 and the discharge volume is controlled by the electric control valve 32.

[0031] The motor 52 of this utility model is purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0032] The main function achieved by this utility model is: in the gas calibration process of the sensor, by setting up a filter mechanism and a ratchet mechanism, the incoming air can be filtered during the gas calibration process of the sensor, reducing the impact of wind and sand on the detection results and improving the detection accuracy.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A gas calibration device for a sensor, comprising a calibration mechanism (1); characterized in that, It also includes filtering mechanism (2), exhaust mechanism (3), display mechanism (4), detection mechanism (5) and two groups of ratchet mechanism (6), filtering mechanism (2) is installed in the right end of calibration mechanism (1), exhaust mechanism (3) is installed in the left end of calibration mechanism (1), display mechanism (4) is installed in the upper end of calibration mechanism (1), detection mechanism (5) is installed in calibration mechanism (1), two groups of ratchet mechanism (6) are installed on detection mechanism (5); The calibration mechanism (1) is ventilated, the filtering mechanism (2) is inhaled, the exhaust mechanism (3) is exhausted, the display mechanism (4) is displayed, the detection mechanism (5) is detected, and the ratchet mechanism (6) is protected.

2. A gas calibration device for a sensor as defined in claim 1, characterized in that The calibration mechanism (1) includes calibration box body (11) and two groups of gas rectifier (12), and the two groups of gas rectifier (12) are installed in the calibration box body (11).

3. A gas calibration device for a sensor as defined in claim 2, characterized in that The filtering mechanism (2) includes air inlet pipe (21), air valve (22), filter bin (23) and filter screen (24), air inlet pipe (21) is installed in the right end of calibration box body (11), air valve (22) is installed on air inlet pipe (21), filter bin (23) is installed in the right end of air inlet pipe (21), and filter screen (24) is slidably installed in filter bin (23).

4. A gas calibration device for a sensor as defined in claim 2, wherein, The exhaust mechanism (3) includes exhaust pipe (31) and electric control valve (32), and the exhaust pipe (31) is installed in the left end of calibration box body (11), and the electric control valve (32) is installed on the exhaust pipe (31).

5. A gas calibration device for a sensor as defined in claim 2, wherein, The display mechanism (4) includes sensor rod (41) and display table (42), and the sensor rod (41) is installed on the upper end of calibration box body (11), and the display table (42) is installed on the sensor rod (41).

6. A gas calibration device for a sensor as defined in claim 2, wherein, The detection mechanism (5) includes turnover blade shaft (51) and motor (52), and the turnover blade shaft (51) is rotatably installed on the calibration box body (11), and the motor (52) is installed on the front end of the calibration box body (11), and the output end of the motor (52) is connected with the input end of the turnover blade shaft (51).

7. A gas calibration device for a sensor as defined in claim 6, characterized in that The ratchet mechanism (6) includes ratchet ring (61) and four groups of teeth (62), and the ratchet ring (61) is installed in the calibration box body (11), and the four groups of teeth (62) are rotatably installed on the turnover blade shaft (51) through springs.

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