CN218973590U

CN218973590U - Calibrating device of gas flow sensor

Info

Publication number: CN218973590U
Application number: CN202222692149.3U
Authority: CN
Inventors: 周琪
Original assignee: Suzhou Lonbo Calibration And Testing Co ltd
Current assignee: Suzhou Lonbo Calibration And Testing Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-05-05
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses a calibrating device of a gas flow sensor, which comprises a calibrating box body, wherein a motor is fixedly connected to the middle position of the right side of the front end of the calibrating box body, a rotating rod is fixedly connected to the output end of the motor, first gas rectifiers are fixedly connected to the right side positions between the top and the bottom of the inner wall of the calibrating box body and between the front end and the rear end of the calibrating box body, second gas rectifiers are fixedly connected to the left side positions between the top and the bottom of the inner wall of the calibrating box body and between the front end and the rear end of the calibrating box body, and a sensor rod is penetrated and fixedly connected to the top of a fixed block. According to the utility model, the air valve plays a role in regulating the flow of the gas entering the air inlet pipe, if the flow of the gas entering the air inlet pipe is less, the motor can drive the rotating rod to rotate, so that the overturning leaves and the overturning shaft rotate, the gas flow is further subjected to dispersion treatment, and the dispersed gas is subjected to the action of the two gas rectifiers, so that the gas flow speed is more stable, and the calibration precision is higher.

Description

Calibrating device of gas flow sensor

Technical Field

The utility model relates to the technical field of calibration devices, in particular to a calibration device for a gas flow sensor.

Background

The plug-in pipeline gas flow sensor has the characteristics of small pressure loss, large measuring range and high precision, is hardly influenced by parameters such as gas density, pressure, temperature and the like when measuring the working condition gas flow, is widely applied to the flow measurement of various industrial pipeline gases, is a relatively advanced and ideal gas flow instrument, and ensures the measuring precision of the sensor through a calibrating device of the gas flow sensor.

The existing calibration device generally cannot adjust the gas flow in the gas inlet pipe when gas is input, and the gas flow is concentrated after entering the device, so that the calibration result is easy to generate errors, the use of the sensor rod is affected, and the flow speed of the gas in the device can also affect the calibration result.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a calibration device of a gas flow sensor.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a calibrating device of gas flow sensor, includes the calibration box, calibration box right side central point puts and runs through and be provided with the inlet port, calibration box right side central point puts and runs through and fixedly connected with intake pipe and inlet port between be linked together, calibration box left side central point puts and runs through and be provided with the exhaust hole, calibration box left side central point puts and runs through and fixedly connected with blast pipe and exhaust hole between be linked together, calibration box front end right side intermediate position fixedly connected with motor, the output fixedly connected with bull stick of motor, run through on the bull stick and fixedly connected with tilting shaft, right side position all fixedly connected with first gas rectifier between calibration box inner wall top and bottom, front end and the rear end, the equal fixedly connected with second gas rectifier of left side position between calibration box inner wall top and bottom, front end and the rear end, calibration box inner wall is located the second gas rectifier left side and is the third cavity, calibration box inner wall is located the second gas rectifier right side and is the second gas rectifier right side, calibration box inner wall is located the first gas rectifier top fixedly connected with sensor block, the top fixedly connected with sensor block is located the top fixedly connected with the top.

As a further description of the above technical solution:

and an air valve is arranged in the middle of the outer diameter of the air inlet pipe.

As a further description of the above technical solution:

and an electric control valve is arranged in the middle of the outer diameter of the exhaust pipe.

As a further description of the above technical solution:

the rotating rod is penetrated and rotatably connected with the calibration box body.

As a further description of the above technical solution:

the outer diameter of the turning shaft is fixedly connected with five turning blades which are uniformly distributed.

As a further description of the above technical solution:

the top of the sensor rod is fixedly connected with a display meter.

The utility model has the following beneficial effects:

1. according to the utility model, firstly, the air valve plays a role in regulating the flow rate of gas entering the air inlet pipe, if the flow rate of the gas entering the air inlet pipe is large, the airflow impacts the overturning leaves, if the flow rate of the gas entering the air inlet pipe is small, the impact force of the airflow on the overturning leaves is small, the motor can drive the rotating rod to rotate, so that the overturning leaves and the overturning shaft rotate, further, the airflow is subjected to dispersion treatment, the impact on the sensor rod caused by too concentrated airflow is avoided, the error of a measuring result is caused, the use of the sensor rod is influenced, the dispersed gas is subjected to the action of two gas rectifiers, the gas flow rate is stable, the calibration precision is high, and the precision of the gas flow sensor to be detected is judged by comparing the data of the standard gas flow sensor with the data on the display surface of the gas flow sensor to be detected, so that the calibration is performed.

Drawings

FIG. 1 is a perspective view of a calibration device for a gas flow sensor according to the present utility model;

FIG. 2 is a diagram showing a turnover leaf structure of a calibration device for a gas flow sensor according to the present utility model;

fig. 3 is a diagram showing a second chamber structure of a calibration device for a gas flow sensor according to the present utility model.

Legend description:

1. calibrating the box body; 2. an air valve; 3. an air inlet pipe; 4. a motor; 5. an exhaust pipe; 6. an electric control valve; 7. a sensor lever; 8. a display table; 9. an air inlet hole; 10. turning over the leaves; 11. a first gas rectifier; 12. an exhaust hole; 13. a second gas rectifier; 14. a rotating rod; 15. a turnover shaft; 16. a fixed block; 17. a third chamber; 18. a second chamber; 19. a first chamber.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the calibrating device of the gas flow sensor comprises a calibrating box body 1, wherein the right central position of the calibrating box body 1 penetrates through and is provided with an air inlet hole 9, the right central position of the calibrating box body 1 penetrates through and is fixedly connected with an air inlet pipe 3, the air inlet pipe 3 is communicated with the air inlet hole 9, gas is input into a first cavity 19 through the air inlet pipe 3, the left central position of the calibrating box body 1 penetrates through and is provided with an air outlet hole 12, the left central position of the calibrating box body 1 penetrates through and is fixedly connected with an air outlet pipe 5, the air outlet pipe 5 is communicated with the air outlet hole 12, the middle position of the right front end of the calibrating box body 1 is fixedly connected with a motor 4, the output end of the motor 4 is fixedly connected with a rotating rod 14, the rotating rod 14 penetrates through and is fixedly connected with a turnover shaft 15, if the flow of the gas entering the air inlet pipe 3 is less, the impact force of the air flow on a turnover blade 10 is less, the motor 4 can be driven to rotate by the motor 4, the overturning blades 10 and the overturning shafts 15 are rotated to disperse the airflow, so that the airflow is prevented from being too concentrated, the impact on the sensor rod 7 of the airflow sensor is avoided, the error is further caused to the measurement result, the use of the sensor rod 7 is affected, the first airflow rectifier 11 is fixedly connected to the right side positions between the top and the bottom of the inner wall of the calibration box 1 and between the front end and the rear end, the second airflow rectifier 13 is fixedly connected to the left side positions between the top and the bottom of the inner wall of the calibration box 1 and between the front end and the rear end, the third cavity 17 is arranged on the left side of the second airflow rectifier 13, the second cavity 18 is arranged on the right side of the second airflow rectifier 13, the first cavity 19 is arranged on the right side of the first airflow rectifier 11, and the dispersed air is subjected to the action of the two airflow rectifiers, the gas flow rate is stable, the calibration precision is high, the middle position of the left side of the top of the calibration box body 1 penetrates through and is fixedly connected with a fixed block 16, and the top of the fixed block 16 penetrates through and is fixedly connected with a sensor rod 7.

The air inlet pipe 3 external diameter intermediate position is provided with blast gate 2, blast gate 2 plays the flow of regulation gas admission air inlet pipe 3, if the flow of gas admission air inlet pipe 3 is great, the air current produces the impact to upset leaf 10, make upset leaf 10 drive upset axle 15 and bull stick 14 rotation, blast pipe 5 external diameter intermediate position is provided with electric control valve 6, open electric control valve 6 and discharge gas from blast pipe 5 in, run through and rotate between bull stick 14 and the calibration box 1 and be connected, five upset leaves 10 of upset axle 15 external diameter fixedly connected with evenly distributed, sensor rod 7 top fixedly connected with show table 8, through gathering the data of standard gas flow sensor and the data on the gas flow sensor show table 8 that awaits measuring, and then judge the precision of waiting to detect gas flow sensor, thereby correct it.

Working principle: firstly, air is input into a first cavity 19 through an air inlet pipe 3, an air valve 2 plays a role in adjusting the flow rate of the air entering the air inlet pipe 3, if the flow rate of the air entering the air inlet pipe 3 is large, the air flow impacts a turnover blade 10, so that the turnover blade 10 drives a turnover shaft 15 and a rotating rod 14 to rotate, if the flow rate of the air entering the air inlet pipe 3 is small, the air flow works to drive the rotating rod 14 to rotate through a motor 4, so that the turnover blade 10 and the turnover shaft 15 rotate, the air flow is further dispersed, the air flow is prevented from being too concentrated, and the impact on a sensor rod 7 of an air flow sensor is avoided, and then the measuring result produces errors, the use of the sensor rod 7 is affected, the dispersed gas passes through the first gas rectifier 11 from the first chamber 19 and enters the second chamber 18, then passes through the second gas rectifier 13 from the second chamber 18 and enters the third chamber 17, under the action of the two gas rectifiers, the gas flow rate is more stable, the calibration precision is higher, the data of the standard gas flow sensor is acquired and compared with the data on the display table 8 of the gas flow sensor to be detected, the precision of the gas flow sensor to be detected is judged, the calibration is carried out, and finally the electric control valve 6 is opened to discharge the gas from the exhaust pipe 5.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a calibrating device of gas flow sensor, includes calibration box (1), its characterized in that: the utility model discloses a calibrating box, including calibrating box (1), gas inlet (9) are arranged in the center of right side, calibrating box (1) right side center runs through and is fixedly connected with intake pipe (3) and intake pipe (3) are linked together with intake (9), calibrating box (1) left side center runs through and is provided with exhaust hole (12), calibrating box (1) left side center runs through and is fixedly connected with blast pipe (5) and is linked together between blast pipe (5) and exhaust hole (12), calibrating box (1) front end right side intermediate position fixedly connected with motor (4), the output fixedly connected with bull stick (14) of motor (4), run through on bull stick (14) and fixedly connected with upset axle (15), all fixedly connected with first gas rectifier (11) in right side position between calibrating box (1) inner wall top and bottom, front end and the rear end, all fixedly connected with second gas rectifier (13) in left side position between calibrating box (1) inner wall top and bottom, front end and the rear end, calibrating box (13) are located second gas rectifier (13) in chamber (13) on the right side, second gas rectifier (13) are located in chamber (13), the inner wall of the calibration box body (1) is positioned on the right side of the first gas rectifier (11) and is a first cavity (19), a fixing block (16) is penetrated and fixedly connected at the middle position of the left side of the top of the calibration box body (1), and a sensor rod (7) is penetrated and fixedly connected at the top of the fixing block (16).

2. A gas flow sensor calibration device according to claim 1, wherein: an air valve (2) is arranged in the middle of the outer diameter of the air inlet pipe (3).

3. A gas flow sensor calibration device according to claim 1, wherein: an electric control valve (6) is arranged in the middle of the outer diameter of the exhaust pipe (5).

4. A gas flow sensor calibration device according to claim 1, wherein: the rotating rod (14) is connected with the calibration box body (1) in a penetrating and rotating mode.

5. A gas flow sensor calibration device according to claim 1, wherein: five uniformly distributed overturning blades (10) are fixedly connected to the outer diameter of the overturning shaft (15).

6. A gas flow sensor calibration device according to claim 1, wherein: the top of the sensor rod (7) is fixedly connected with a display meter (8).