CN209014434U - A one-step ventilation rate standard rod period verification device - Google Patents
A one-step ventilation rate standard rod period verification device Download PDFInfo
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- CN209014434U CN209014434U CN201821515392.5U CN201821515392U CN209014434U CN 209014434 U CN209014434 U CN 209014434U CN 201821515392 U CN201821515392 U CN 201821515392U CN 209014434 U CN209014434 U CN 209014434U
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- 238000009423 ventilation Methods 0.000 title claims abstract description 53
- 238000012795 verification Methods 0.000 title claims abstract description 5
- 238000009530 blood pressure measurement Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 3
- 230000001105 regulatory effect Effects 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 9
- 235000019504 cigarettes Nutrition 0.000 description 9
- 238000001914 filtration Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010943 off-gassing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
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Abstract
本实用新型公开了一种一步式通风率标准棒期间核查装置，包括定量负压装置、夹具、第一压差传感器、第二压差传感器、第三压差传感器、第一流量传感器以及第二流量传感器，夹具设有第一进气口、出气口、第二进气口，第一流量传感器串联于定量负压装置的进气端与夹具的出气端之间，第一压差传感器、第二压差传感器分别连接于第一流量传感器的出气端、进气端，第二进气口与第二流量传感器相连接，第二压差传感器并联在第一进气口和第二进气口之间，第二流量传感器连接在夹具第二进气口，第三压差传感器连接于第二流量传感器的出气端。两个流量传感器作为标准，分别测量标准棒的总流量与通风流量，一步式完成标准棒量值的测定。
The utility model discloses a one-step ventilation rate standard rod period verification device, comprising a quantitative negative pressure device, a clamp, a first differential pressure sensor, a second differential pressure sensor, a third differential pressure sensor, a first flow sensor and a second differential pressure sensor. The flow sensor is provided with a first air inlet, an air outlet and a second air inlet. The first flow sensor is connected in series between the air inlet end of the quantitative negative pressure device and the air outlet end of the clamp. Two differential pressure sensors are respectively connected to the outlet end and the intake end of the first flow sensor, the second air inlet is connected to the second flow sensor, and the second differential pressure sensor is connected in parallel to the first air inlet and the second air inlet In between, the second flow sensor is connected to the second air inlet of the fixture, and the third differential pressure sensor is connected to the air outlet end of the second flow sensor. Two flow sensors are used as the standard to measure the total flow and ventilation flow of the standard rod respectively, and the measurement of the standard rod value is completed in one step.
Description
Technical field
The utility model belongs to cigarette detecting instrument standard component collimation technique field, and in particular to a kind of single step ventilation rate
Check device during master bar.
Background technique
Cigarette ventilation rate includes filter ventilation rates, paper ventilation rate, total ventilation rate, generally use cigarette ventilation rate analyzer and
The measurement of cigarette physical property combined test stand, cigarette ventilation rate size not only influence the inherent quality of cigarette product, can also change
Gas Parameters.Ventilation rate master bar is the standard component used on cigarette ventilation rate detecting instrument, and ventilation rate master bar decides volume
Cigarette ventilation rate measurement data accuracy, annual calibrating is primary as required, to guarantee the traceability of ventilation rate master bar magnitude.
Many enterprises think that, as long as carrying out periodic verification to ventilation rate master bar, ventilation rate master bar magnitude is exactly reliable
Constant.However in fact, ventilation rate master bar within the re-testing periods, if saving careless and improper use, will lead to ventilation rate
Master bar metering performance changes, and does not ensure that the lasting credible of ventilation rate master bar calibrating state.Therefore, it is necessary to examine
It is verified during being carried out in fixed cycle to ventilation rate master bar, is verified by period, can find the magnitude of ventilation rate master bar in time
Misalignment, and shorten the retrospect time after misalignment, to improve the confidence level of cigarette ventilation rate measurement data, reduce ventilation rate master bar
Calibrating state is abnormal variation bring risk.
Ventilation rate master bar is examined and determine currently, tobacco business generallys use soap film flowmeter as standard, but is not had
Check standard device and check method during corresponding.Therefore, it is necessary to develop a set of highly reliable, high-efficient ventilation rate mark
Check standard device during quasi- stick.
Utility model content
Based on the deficiencies of the prior art, the purpose of this utility model is to provide during a kind of single step ventilation rate master bar
Check standard device.
Check device during a kind of single step ventilation rate master bar, the quantitative negative pressure dress including generating constant negative pressure air-flow
Set, clamp fixture, the first differential pressure pickup, the second differential pressure pickup, the third differential pressure pickup, first flow sensing of master bar
Device and second flow sensor, the both ends of the fixture are respectively equipped with the first air inlet and air outlet, and side is equipped with the
Two air inlets, the first flow sensor series are described between the inlet end of quantitative negative pressure device and the outlet side of fixture
First differential pressure pickup, the second differential pressure pickup are connected to the outlet side of first flow sensor, inlet end, the second air inlet
Mouthful be connected with the second flow sensor, second differential pressure pickup be connected in parallel on the first air inlet and the second air inlet it
Between, the second flow sensor is connected to the second air inlet of fixture, and the third differential pressure pickup is connected to second flow biography
The outlet side of sensor.
The quantitative negative pressure device includes vacuum generator, sonic nozzle and filtering pressure regulator valve, the vacuum generator
Positive pressure side is connect with filtering pressure regulator valve, the sonic nozzle gas outlet and the negative press bond of vacuum generator, and the fixture goes out
Port is connected with sonic nozzle air entry.
The master bar is cylindrical structure comprising air inlet end face, outlet end face, external cylindrical surface, total capilar bore pass through
It is through between outlet end face and air inlet end face, external cylindrical surface is equipped with ventilation capilar bore by near outgassing end face position, capillary of divulging information
Pore connects with total capilar bore.
The first flow sensor and second flow sensor are piston type volume flow sensor or heat type flow quantity
Sensor, accuracy are not less than 1.0 grades, subsidiary gas temperature, atmospheric pressure measurement device.
The accuracy of first differential pressure pickup, the second differential pressure pickup and third differential pressure pickup is not less than 0.1
Grade.
The utility model has the beneficial effects that the utility model uses two flow sensors as standard, it is respectively used to survey
The total flow and vent flow of ventilation rate master bar are measured, single step completes the measurement of ventilation rate master bar magnitude, Measurement reliability
By force, work efficiency is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is master bar structural schematic diagram；
Fig. 3 is master bar section enlarged diagram；
In figure: 1, filtering pressure regulator valve, 2, vacuum generator, 3, sonic nozzle, the 4, first differential pressure pickup, 5, first flow
Sensor, the 6, second differential pressure pickup, 7, fixture, 8, master bar, 9, second flow sensor, 10, third differential pressure pickup,
11, external cylindrical surface, 12, outlet end face, 13, air inlet end face, 14, total capilar bore, 15, ventilation capilar bore.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
Please refer to Fig. 1.Structure, ratio, size depicted in this specification institute attached drawing etc., only to cooperate specification institute
The content of announcement is not intended to limit the utility model enforceable restriction so that those skilled in the art understands and reads
Condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, in not shadow
It rings under the effect of the utility model can be generated and the purpose that can reach, should all still fall in the revealed technology of the utility model
In the range of content can cover.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Deng term, be merely convenient to being illustrated for narration, rather than to limit the enforceable range of the utility model, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
As shown in Figure 1, check device during a kind of single step ventilation rate master bar, including generating determining for constant negative pressure air-flow
Fixture 7, the first differential pressure pickup 4, the second differential pressure pickup 6, third differential pressure pickup measured negative pressure device, clamp master bar 8
10, first flow sensor 5 and second flow sensor 9, accuracy are not less than 0.5 grade, subsidiary gas temperature, atmospheric pressure
Force measuring device.The accuracy of first differential pressure pickup 4 and the second differential pressure pickup 6 is not less than 0.1 grade.
The both ends of the fixture 7 are respectively equipped with the first air inlet 71 and gas outlet, and side is equipped with the second air inlet 72,
The first flow sensor 5 is series between the inlet end of quantitative negative pressure device and the outlet side of fixture 7, first pressure difference
Sensor 4, the second differential pressure pickup 6 are connected to the outlet side of first flow sensor 5, inlet end, the second air inlet 72
It is connected with the second flow sensor 9, second differential pressure pickup 6 is connected in parallel on the first air inlet 71 and the second air inlet
Between 72, the second flow sensor 9 is connected to 7 second air inlet 72 of fixture, and the third differential pressure pickup 10 is connected to
The outlet side of second flow sensor 9.
The quantitative negative pressure device includes that vacuum generator 2, sonic nozzle 3 and filtering pressure regulator valve 1, the vacuum occur
The positive pressure side of device 2 is connect with filtering pressure regulator valve 1,3 gas outlet of sonic nozzle and the negative press bond of vacuum generator 2, the folder
The gas outlet of tool 7 is connected with 3 air entry of sonic nozzle.
As shown in Figure 2 and Figure 3, the master bar 8 is cylindrical structure comprising air inlet end face 13, outlet end face 12, outer
Cylindrical surface 11, for total capilar bore 14 through between outlet end face 12 and air inlet end face 13, external cylindrical surface 11 leans near outgassing end face
12 positions are equipped with ventilation capilar bore 15, and ventilation capilar bore 15 connects with total capilar bore 14.
In 8 course of work of master bar, test air is flowed into from ventilation capilar bore 15 and air inlet end face 13, and two-way air converges
It is flowed out after poly- from total capilar bore 14 of outlet end face 12.The air mass flow and total capilar bore 14 that ventilation capilar bore 15 flows into
The ratio between air mass flow of outflow is the ventilation rate of master bar 8.8 ventilation rate magnitude range of master bar is 0~100%, is usually made
Magnitude is 20%, 50%, 80%.
A kind of master bar ventilation rate check method, comprising the following steps:
S1: master bar 8 is installed in fixture 7, and ventilation capilar bore corresponds to the second air inlet 72 of fixture 7, fixture 7
The external cylindrical surface of inner wall and master bar 8 at the first close air inlet 71 seals；
S2: as shown in Figure 1, vent flow measures, pressure-stabilized air source enters filtering pressure regulator valve 1, and the compressed air after pressure regulation exists
Under the action of vacuum generator 2, generate negative pressure, after negative pressure air flows through fixed-size sonic nozzle 3, sonic nozzle 3 into
There is constant flow rate in gas end, and first flow sensor 5 is used to measure the accurate flow value of 3 inlet end of sonic nozzle；In steady flow
In the aspiration procedure of amount, gas enters from the inlet end surface current of master bar 8 all the way, and another way gas is through second flow sensor 9, mark
The ventilation capilar bore of quasi- stick 8 flows into；First differential pressure pickup 4 is used to measure the pressure value of 5 outlet side of first flow sensor,
Second differential pressure pickup 6 is used for the pressure value of 7 outlet side of measured material, and third differential pressure pickup 10 is passed for the second measuring flow
The pressure value of sensor outlet side；
S3 is after the stability of flow by master bar 8, the flow of record first flow sensor 5, second flow sensor 9
Indicating value is respectively Q1、Q2, the pressure indicating value difference of the first differential pressure pickup 4, the second differential pressure pickup 6, third differential pressure pickup 10
For P1、PD、P2, atmospheric pressure is P at this time；
The total flow Q of master bar 8 is as follows:
The vent flow Q of master bar 8VIt is as follows:
The ventilation rate V of master bar 8 is as follows:
This standard stick 8 period check device, as standard, is respectively used to measurement ventilation rate mark using two flow sensors
The total flow and vent flow of quasi- stick 8, single step complete the measurement of 8 magnitude of ventilation rate master bar, and Measurement reliability is strong, work effect
Rate is high.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821515392.5U CN209014434U (en) | 2018-09-17 | 2018-09-17 | A one-step ventilation rate standard rod period verification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821515392.5U CN209014434U (en) | 2018-09-17 | 2018-09-17 | A one-step ventilation rate standard rod period verification device |
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| CN209014434U true CN209014434U (en) | 2019-06-21 |
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ID=66833317
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| CN201821515392.5U Active CN209014434U (en) | 2018-09-17 | 2018-09-17 | A one-step ventilation rate standard rod period verification device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085110A (en) * | 2018-09-17 | 2018-12-25 | 河南中烟工业有限责任公司 | Check device and its check method during a kind of single step ventilation rate master bar |
| CN114264341A (en) * | 2020-09-15 | 2022-04-01 | 中国烟草总公司郑州烟草研究院 | Standard rod ventilation rate detection device and standard rod ventilation rate detection method |
-
2018
- 2018-09-17 CN CN201821515392.5U patent/CN209014434U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085110A (en) * | 2018-09-17 | 2018-12-25 | 河南中烟工业有限责任公司 | Check device and its check method during a kind of single step ventilation rate master bar |
| CN109085110B (en) * | 2018-09-17 | 2023-08-18 | 河南中烟工业有限责任公司 | A one-step ventilation rate standard rod period check device and check method |
| CN114264341A (en) * | 2020-09-15 | 2022-04-01 | 中国烟草总公司郑州烟草研究院 | Standard rod ventilation rate detection device and standard rod ventilation rate detection method |
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