CN220437536U - Ventilation rate calibration device suitable for unmanned - Google Patents
Ventilation rate calibration device suitable for unmanned Download PDFInfo
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- CN220437536U CN220437536U CN202322012908.1U CN202322012908U CN220437536U CN 220437536 U CN220437536 U CN 220437536U CN 202322012908 U CN202322012908 U CN 202322012908U CN 220437536 U CN220437536 U CN 220437536U
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- 238000009423 ventilation Methods 0.000 title claims abstract description 39
- 230000001105 regulatory effect Effects 0.000 claims abstract description 23
- 239000011521 glass Substances 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 13
- 241000208125 Nicotiana Species 0.000 description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model provides a ventilation rate calibration device suitable for unmanned, which comprises a standard rod main body, a flow controller, a pressure regulating valve group and a differential pressure gauge; the standard rod main body is internally provided with a main air duct, a side air duct and a side air outlet duct, the main air duct axially penetrates through the standard rod main body, an inlet of the side air duct is arranged at the side part of the standard rod main body, the main body part of the side air duct is parallel to the main air duct, an outlet of the side air duct is on the same side as the inlet of the main air duct, and the side air outlet duct axially penetrates through the standard rod main body and is parallel to the main air duct; the inlet of the flow controller is connected with the outlet of the side air outlet channel, the outlet of the flow controller is connected with the inlet of the side air outlet channel, and the outlet of the main air channel is on the same side as the outlet of the side air outlet channel; the inlet of the main air duct is connected with the outlet of the pressure regulating valve group, and the inlet of the pressure regulating valve group is communicated with the atmosphere; two measuring points of the differential pressure meter are respectively arranged at the inlet side of the side air outlet duct and the inlet side of the main duct. The ventilation rate calibration device suitable for unmanned has the advantages that the ventilation rate can be adjusted, and only one set of equipment is needed without replacing a standard rod.
Description
Technical Field
The utility model relates to the technical field of calibration of standard appliances in the tobacco industry, in particular to a ventilation rate calibration device suitable for unmanned.
Background
In the tobacco industry, a smoke resistance and ventilation rate detection chamber of a cigarette is an important work, the smoke resistance refers to air resistance sensed in a smoking process, and the ventilation rate refers to the proportion of circumferential ventilation of the cigarette relative to total ventilation.
In the cigarette production process, the two indexes are required to be detected by a tester.
However, after the detection instrument is used for a long time, the detection instrument needs to be checked and calibrated to determine whether the detection instrument can be accurately measured and then can be continuously put into use.
At present, a standard rod is recommended to be used in the standard, the standard rod is a standard instrument made of inert materials and provided with hollow capillary holes, and the standard instrument has stable passing flow and resistance, so that the accuracy of the test instrument can be judged by detecting the related indication value of the standard rod and comparing the indication value with the set value of the standard rod.
However, the checking of the test instrument often requires multiple data to be combined and observed, so that a group of standard rod products with different parameters are required, and the use is relatively complicated.
Moreover, with the adoption of remote verification technology, how to switch and install standard bars and store standard bars without human intervention is a difficult problem.
In order to solve the above problems, an ideal technical solution is always sought.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art, and provides a ventilation rate calibration device which can adjust the ventilation rate, is suitable for unmanned operation and only needs one set of equipment without replacing a standard rod.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the ventilation rate calibration device suitable for unmanned comprises a standard rod main body, a flow controller, a pressure regulating valve group and a differential pressure gauge;
the standard rod comprises a standard rod body, wherein a main air channel, a side air channel and a side air outlet channel are arranged in the standard rod body, the main air channel axially penetrates through the standard rod body, an inlet of the side air channel is arranged at the side part of the standard rod body, the main body part of the side air channel is parallel to the main air channel, an outlet of the side air channel is on the same side as the inlet of the main air channel, and the side air outlet channel axially penetrates through the standard rod body and is parallel to the main air channel;
the inlet of the flow controller is connected with the outlet of the side air outlet channel, the outlet of the flow controller is connected with the inlet of the side air outlet channel, and the outlet of the main air channel and the outlet of the side air outlet channel are positioned on the same side;
the inlet of the main air duct is connected with the outlet of the pressure regulating valve group, and the inlet of the pressure regulating valve group is communicated with the atmosphere;
two measuring points of the differential pressure gauge are respectively arranged at the inlet side of the side air outlet duct and the inlet side of the main duct.
The inlet of the side air duct is perpendicular to the main air duct, the side air outlet duct and the main body of the side air duct.
The inner diameter of the main air duct is larger than the inner diameters of the side air duct and the side air outlet duct.
Based on the above, the inner diameter of the main air duct is more than 2 times of the inner diameter of the side air duct or the side air outlet duct.
Based on the above, the inner diameters of the side air inlet duct and the side air outlet duct are the same.
Based on the above, the length of the inlet of the side air duct from the outlet end of the main air duct is one fifth to one third of the total length of the standard rod main body.
The standard rod main body is made of glass or inert plastic.
Based on the above, the pressure regulating valve group, the differential pressure gauge and the flow controller are all connected with the remote controller through a network.
The device is characterized by further comprising an barometer and a thermometer which are positioned in the same space with the standard rod main body, and the barometer and the thermometer are connected with a remote controller.
Compared with the prior art, the utility model has substantial characteristics and progress, and in particular has the following advantages:
1. the ventilation rate can be expressed as the ratio of side ventilation to total ventilation, and this device passes through flow controller, can adjust side ventilation volume, and then adjusts the ventilation rate, realizes the setting of different ventilation rates, and then can only adopt one set of device, can replace the ventilation rate standard stick of different specifications.
2. The device does not need to be replaced to switch the ventilation rate, but controls the ventilation rate by controlling the flow controller, the ventilation rate can be actively adjusted in an intervention way, the device is suitable for remote control, the switching and the introduction of a plurality of standard rods are not needed any more, and one requirement of the tobacco industry on unmanned upgrading and reconstruction is met.
Drawings
FIG. 1 is a schematic diagram of a ventilation rate calibration device suitable for unmanned use in the present utility model.
In the figure: 1. a standard rod body; 2. a flow controller; 3. a pressure regulating valve group; 4. a differential pressure gauge; 11. a main air duct; 12. a side air inlet duct; 13. a side air outlet duct; 14. inlet of side air duct.
Detailed Description
The technical scheme of the utility model is further described in detail through the following specific embodiments.
As shown in fig. 1, a ventilation rate calibration device suitable for unmanned use comprises a standard rod body 1, a flow controller 2, a pressure regulating valve group 3 and a differential pressure gauge 4.
The material of standard stick main part is glass or inert plastic to keep stable, the inside main air duct 11 that is provided with of standard stick main part 1, side air duct 12 and side air duct 13, main air duct 11 runs through axially standard stick main part 1, the import 14 of side air duct sets up in the lateral part of standard stick main part 1, and its length from the exit end of main air duct 11 accounts for the fifth to third of standard stick main part 1 total length, the import 14 of side air duct is perpendicular with main air duct 11, side air duct 13 and the main part of side air duct 12, and is similar with traditional ventilation rate standard stick's proportion.
The main part of the side air inlet duct 12 is parallel to the main air duct 11, the outlet of the side air inlet duct 12 is on the same side as the inlet of the main air duct 11, and the side air inlet duct 12 is L-shaped as a whole.
The side air outlet duct 13 axially penetrates through the standard rod main body 1 and is parallel to the main air duct 11, in this embodiment, the inner diameters of the side air outlet duct 12 and the side air outlet duct 13 are the same, and the flow rates of the two are easier to control and are consistent.
To ensure the throughput, the inner diameter of the main duct 11 is larger than the inner diameters of the side air intake duct 12 and the side air outlet duct 13, and half of the inner diameters are controlled to be more than twice.
The inlet of the flow controller 2 is connected with the outlet of the side air inlet duct 12, the outlet of the flow controller 2 is connected with the inlet of the side air outlet duct 13, and the flow controller 2 is used for controlling the total flow of side ventilation.
The outlet of the main air duct 11 and the outlet of the side air outlet duct 13 are positioned on the same side, and a traditional ventilation rate standard rod is simulated.
The inlet of the main air duct 11 is connected with the outlet of the pressure regulating valve group 3, the inlet of the pressure regulating valve group 3 is communicated with the atmosphere, and the pressure regulating valve group 3 is mainly used for regulating the air pressure in the main air duct 11.
The two measuring points of the differential pressure meter 4 are respectively arranged at the inlet side of the side air outlet duct 13 and the inlet side of the main air duct 11, the differential pressure meter 4 is used for being matched with the pressure regulating valve group 3, and the purpose is to regulate the differential pressure between the main air duct 11 and the side air outlet duct 13 to be zero, so that the air pressure of the main air duct 11 and the side air outlet duct 13 is equal, and the ventilation rate is controlled conveniently.
Working principle:
total flow of standard rod body = side flow + main flow, wherein the total flow is typically set to a fixed value, such as 17.5ml/s. And the ventilation rate is expressed as a ratio of the side flow rate to the total flow rate.
The side flow is controlled by the side air inlet duct 12, the side air outlet duct 13 and the flow controller 2, the main flow is calculated by subtracting the side flow from the total flow, and the pressure regulating valve group is used for regulating the pressure difference between the main air duct 11 and the side air outlet duct 13 to be zero.
When the device is particularly used, the device is connected to external detection equipment, the outlet end of the standard rod main body is connected with a constant flow hole of the detection equipment so as to control the total output flow to be 17.5ml/s, and the inlet 14 of the side air inlet channel is connected to a detection air path of the detection equipment.
Then, the flow controller 2 is regulated to control the side flow to a first value, and then the pressure difference is controlled to be zero through the pressure regulating valve group, so that a first ventilation rate standard value can be obtained, and according to the ventilation rate standard value, the ventilation rate standard value is compared with a detection indication value of a detection tool to realize checking and calibration.
In order to ensure the comprehensiveness of detection, a plurality of numerical values are output through adjusting the flow controller 2 to form different ventilation rate reference values, and the reference values are compared with detection indication values of detection tools to realize checking and calibration.
In the preferred embodiment, the pressure regulating valve group, the pressure differential gauge and the flow controller are all connected with a remote controller through a network so as to realize remote adjustment and facilitate unmanned transformation.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present utility model and are not limiting; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.
Claims (9)
1. The utility model provides a ventilation rate calibration device suitable for unmanned, its characterized in that: the device comprises a standard rod main body, a flow controller, a pressure regulating valve group and a differential pressure gauge;
the standard rod comprises a standard rod body, wherein a main air channel, a side air channel and a side air outlet channel are arranged in the standard rod body, the main air channel axially penetrates through the standard rod body, an inlet of the side air channel is arranged at the side part of the standard rod body, the main body part of the side air channel is parallel to the main air channel, an outlet of the side air channel is on the same side as the inlet of the main air channel, and the side air outlet channel axially penetrates through the standard rod body and is parallel to the main air channel;
the inlet of the flow controller is connected with the outlet of the side air outlet channel, the outlet of the flow controller is connected with the inlet of the side air outlet channel, and the outlet of the main air channel and the outlet of the side air outlet channel are positioned on the same side;
the inlet of the main air duct is connected with the outlet of the pressure regulating valve group, and the inlet of the pressure regulating valve group is communicated with the atmosphere;
two measuring points of the differential pressure gauge are respectively arranged at the inlet side of the side air outlet duct and the inlet side of the main duct.
2. The draft rating apparatus for unmanned use according to claim 1, wherein: the inlet of the side air inlet duct is perpendicular to the main air duct, the side air outlet duct and the main body part of the side air inlet duct.
3. The ventilation rate calibration device suitable for unmanned aerial vehicle according to claim 1 or 2, wherein: the inner diameter of the main air duct is larger than the inner diameters of the side air duct and the side air outlet duct.
4. A ventilation rate calibration device suitable for unmanned aerial vehicle according to claim 3, wherein: the inner diameter of the main air duct is more than 2 times of that of the side air duct or the side air outlet duct.
5. The ventilation rate calibration device adapted for unmanned aerial vehicle according to claim 1 or 2 or 4, wherein: the inner diameters of the side air inlet duct and the side air outlet duct are the same.
6. The device for calibrating an unmanned aeration rate according to claim 5, wherein: the length of the inlet of the side air inlet channel from the outlet end of the main air channel is one fifth to one third of the total length of the standard rod main body.
7. The ventilation rate calibration device for unmanned aerial vehicles according to claim 1 or 2 or 4 or 6, wherein: the standard rod main body is made of glass or inert plastic.
8. The draft rating apparatus for unmanned use according to claim 7, wherein: the pressure regulating valve group, the pressure differential gauge and the flow controller are all connected with a remote controller through a network.
9. The draft rating apparatus for unmanned use according to claim 8, wherein: and the atmospheric pressure gauge and the thermometer which are positioned in the same space with the standard rod main body are also arranged, and are connected with a remote controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322012908.1U CN220437536U (en) | 2023-07-28 | 2023-07-28 | Ventilation rate calibration device suitable for unmanned |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322012908.1U CN220437536U (en) | 2023-07-28 | 2023-07-28 | Ventilation rate calibration device suitable for unmanned |
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| Publication Number | Publication Date |
|---|---|
| CN220437536U true CN220437536U (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322012908.1U Active CN220437536U (en) | 2023-07-28 | 2023-07-28 | Ventilation rate calibration device suitable for unmanned |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117740121A (en) * | 2024-02-20 | 2024-03-22 | 成都睿宝电子科技有限公司 | Automatic calibration device and calibration method for flowmeter |
| CN117740121B (en) * | 2024-02-20 | 2024-06-04 | 成都睿宝电子科技有限公司 | Automatic calibration device and calibration method for flowmeter |
-
2023
- 2023-07-28 CN CN202322012908.1U patent/CN220437536U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117740121A (en) * | 2024-02-20 | 2024-03-22 | 成都睿宝电子科技有限公司 | Automatic calibration device and calibration method for flowmeter |
| CN117740121B (en) * | 2024-02-20 | 2024-06-04 | 成都睿宝电子科技有限公司 | Automatic calibration device and calibration method for flowmeter |
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