CN207081601U - A kind of simple aerosol diluter - Google Patents
A kind of simple aerosol diluter Download PDFInfo
- Publication number
- CN207081601U CN207081601U CN201721110935.0U CN201721110935U CN207081601U CN 207081601 U CN207081601 U CN 207081601U CN 201721110935 U CN201721110935 U CN 201721110935U CN 207081601 U CN207081601 U CN 207081601U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- capillary
- regulating valve
- diluter
- aerosol diluter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of simple aerosol diluter, it is related to Indoor Environment Detection technical field.The diluter, including：First pipeline and the second pipeline, the inlet end of the inlet end of first pipeline and the second pipeline is connected with air inlet pipe, the outlet side of first pipeline and the outlet side of the second pipeline are connected with escape pipe, high efficiency particulate air filter and the first regulating valve are in series with first pipeline, capillary and the second regulating valve are in series with second pipeline, one piece of pressure difference meter is parallel between the both ends of capillary.First regulating valve only serves the effect of balance pressure, and fine setting task is undertaken by the second regulating valve, and regulation is more convenient；By in the both ends of capillary one piece of pressure difference meter in parallel, can be under the traffic conditions of setting, by the flow for adjusting capillary, to meet the thinner ratio of needs, so the diluter provided using the present embodiment, simple in construction to be easily achieved, thinner ratio is adjustable and control is stable, and systematic error is easily controllable and estimates.
Description
Technical field
It the utility model is related to Indoor Environment Detection technical field, more particularly to a kind of simple aerosol diluter.
Background technology
Air cleaner is to the strainability and air purifier of particulate matter to the removal capacity of particulate matter, it is necessary to use
Corpuscular counter is detected, and in detection process, often occur that aerosol particle concentration detects beyond corpuscular counter
The problem of range, in order to protect corpuscular counter, ensure being smoothed out for test experience, typically suck and sample in corpuscular counter
Before gas, gas is diluted using aerosol diluter.
At present, the general principle of diluter is that sample gas is divided into two-way air inlet, wherein gas passes through efficient mistake all the way
Filter, is changed into the gas of substantially pure, and another way then keeps original gas componant, then by two-way gas mixing, reaches dilution
Effect.In two-way gas mixing, the following two methods of generally use：
A kind of is the method using gas injection, and high concentration air-flow is mixed by injection mode with clean gas, this
Way requires higher in machining, and adjusts difficult；
Another kind is to adjust the mixed proportion of two-way gas by throttling (such as tubule element), in this way, is had
It is the quantitative regulation that flow is carried out using the flowmeter with regulating valve a bit, because pass through flowmeter is that particle concentration compares
High gas, therefore flowmeter is highly susceptible to pollute, and causes the inaccuracy of thinner ratio.More also saved using capillary
Stream, but because system design is unreasonable, unnecessary constraint had both been added, operating difficulties, thinner ratio dyscalculia etc. are caused again.
Utility model content
The purpose of this utility model is to provide a kind of simple aerosol diluter, so as to solve present in prior art
Foregoing problems.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of simple aerosol diluter, including：First pipeline and the second pipeline, the inlet end of first pipeline and institute
The inlet end for stating the second pipeline is connected with air inlet pipe, and the outlet side of the outlet side of first pipeline and second pipeline is equal
It is connected with escape pipe, high efficiency particulate air filter and the first regulating valve is in series with first pipeline, is in series with second pipeline
Capillary and the second regulating valve, one piece of pressure difference meter is parallel between the both ends of the capillary.
Preferably, first regulating valve is the ball valve of lower resistance.
Preferably, second regulating valve is the good reset valve of regulation performance.
Preferably, the resistance allowed in the capillary is 50-200Pa.
Preferably, the internal diameter of the capillary is 1.0-2.0mm.
Preferably, the capillary selection polytetrafluoroethylene capillary.
The beneficial effects of the utility model are：A kind of simple aerosol diluter that the utility model embodiment provides, bag
Include：The inlet end of first pipeline and the second pipeline, the inlet end of first pipeline and second pipeline connects with air inlet pipe
Connect, the outlet side of the outlet side of first pipeline and second pipeline is connected with escape pipe, is gone here and there on first pipeline
High efficiency particulate air filter and the first regulating valve are associated with, capillary and the second regulating valve, the capillary are in series with second pipeline
Both ends between be parallel with one piece of pressure difference meter.First regulating valve only serves the effect of balance pressure, and fine setting task is adjusted by second
Section valve undertakes, and regulation is more convenient；, can be in the traffic conditions of setting by the both ends of capillary one piece of pressure difference meter in parallel
Under, by adjusting the flow of capillary, to meet the thinner ratio of needs, so, the diluter provided using the present embodiment, structure
Simply it is easily achieved, thinner ratio is adjustable and control is stable, and systematic error is easily controllable and estimates.
Brief description of the drawings
Fig. 1 is the structural representation for the simple aerosol diluter that the utility model embodiment provides.
In figure, the implication of each symbol is as follows：
1 high efficiency particulate air filter, 2 capillaries, 3 first regulating valves, 4 second regulating valves, 5 differential manometers, 6 air inlet pipe, 7 escape pipes.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality
It is further elaborated with new.It should be appreciated that embodiment described herein is only explaining this practicality
It is new, it is not used to limit the utility model.
As shown in figure 1, the utility model embodiment provides a kind of simple aerosol diluter, including：First pipeline and
The inlet end of second pipeline, the inlet end of first pipeline and second pipeline is connected with air inlet pipe 6, first pipe
The outlet side on road and the outlet side of second pipeline are connected with escape pipe 7, and high efficiency filter is in series with first pipeline
The regulating valve 3 of device 1 and first, is in series with the regulating valve 4 of capillary 2 and second on second pipeline, between the both ends of capillary 2 simultaneously
It is associated with one piece of pressure difference meter 5.
Aerosol diluter provided by the utility model, relative to prior art, its mainly improve including：
1) the second regulating valve is added, the second regulating valve is reset valve.
2) pressure difference meter is connected between air inlet pipe and escape pipe, but is connected to capillary both ends, then can root
The flow of capillary is adjusted according to the reading of pressure difference meter.Understood according to the flow resistance Te ⊿ P=f (Q) of capillary, by micro-
The Du Shuo ⊿ P of differential manometera, can monodrome determine by the flow Q of capillarya.When producing diluter, you can by repeatedly determining,
To determine above-mentioned corresponding relation.
In test process, due to the flow Q of corpuscular counter samplingzBe it is fixed, can be by adjusting the second regulating valve
Aperture adjust the flow by capillary, so as to the thinner ratio k needed.
K=Qz/Qa
So in the both ends of capillary one piece of pressure difference meter in parallel, can be under the traffic conditions of setting, by adjusting hair
The flow of tubule, to meet the thinner ratio of needs.
3) the first regulating valve only serves the effect of balance pressure, and fine setting task is undertaken by the second regulating valve, and regulation is more square
Just.First regulating valve is from ball valve (cheaper than Linear regulating valve a lot).
4) requirement to capillary is different.The effect of shunting is by capillary and reset valve shared, capillary inner diameter choosing
Take 1.0-2.0mm.
5) high efficiency particulate air filter efficiency can be derived that by the structure of the diluter and dilutes the relation between ratio error.
High efficiency particulate air filter filter efficiency can determine according to the precision that test needs.If the efficiency of high efficiency particulate air filter is η, if
Fixed thinner ratio is k, then the relative error ε tested=(1- η) (k-1), and thinner ratio k=Qz/Qa。
It can be seen that diluter provided by the utility model, not only device structure is simply easily achieved, thinner ratio it is adjustable and
Control is stable, systematic error be easy to be controlled by the flow of the reading of pressure difference meter and the second regulation valve regulation capillary and
Estimation.
In a preferred embodiment of the present utility model, the first regulating valve 3 can be the ball valve of lower resistance.
In the present embodiment, the effect of the first regulating valve only needs sealing primarily to the resistance of equalizing main
The ball valve of lower resistance that can be good meets use demand.
In a preferred embodiment of the present utility model, the second regulating valve 4 can be the good reset valve of regulation performance.
In the present embodiment, the second regulating valve can pass through capillary from the good reset valve of regulation performance with accurate adjustment
Flow, so as to reach the effect for being accurately controlled thinner ratio.
In the present embodiment, the resistance allowed in capillary 2 can be 50-200Pa.
In said structure, by the Resistance Setting of capillary portion between 50~200Pa, it can diluted reducing consumption
While pressure drop on device, ensure under the influence of small air-flow, pressure difference meter will not fluctuate, stable reading.
It is most of both for direct sampling Design although corpuscular counter carries asepwirator pump in detection process,
The negative pressure that asepwirator pump can provide is limited, and therefore, should try one's best the pressure drop for reducing consumption on diluter.On the other hand, pressure drop is too small
When, the influence of small air-flow will fluctuate pressure difference meter, and reading is unstable.Therefore, in the present embodiment, by many experiments,
Under the flow of setting, the resistance for finding capillary portion is suitable between 50~200Pa.
In the present embodiment, the internal diameter of capillary 2 can be 1.0-2.0mm.
In said structure, the internal diameter of capillary 2 is chosen for 1.0-2.0mm, it is ensured that the draught control in capillary
In 50-200Pa, so that while consumption is reduced in the pressure drop on diluter, ensure under the influence of small air-flow, micro-pressure-difference
Meter will not fluctuate, stable reading.
In actual use, capillary relatively can flexibly be selected according to the range of resistance allowed in capillary
Diameter.
In the present embodiment, capillary 2 can select polytetrafluoroethylene capillary.
By using above-mentioned technical proposal disclosed in the utility model, following beneficial effect has been obtained：The utility model
A kind of simple aerosol diluter that embodiment provides, including：First pipeline and the second pipeline, the inlet end of first pipeline
It is connected with the inlet end of second pipeline with air inlet pipe, the outlet of the outlet side of first pipeline and second pipeline
End is connected with escape pipe, and high efficiency particulate air filter and the first regulating valve are in series with first pipeline, is gone here and there on second pipeline
Capillary and the second regulating valve are associated with, one piece of pressure difference meter is parallel between the both ends of the capillary.First regulating valve only rises
To the effect of balance pressure, fine setting task is undertaken by the second regulating valve, and regulation is more convenient；By in parallel at the both ends of capillary
One piece of pressure difference meter, can under the traffic conditions of setting, by adjusting the flow of capillary, to meet the thinner ratio of needs,
So the diluter provided using the present embodiment, simple in construction to be easily achieved, thinner ratio is adjustable and control is stable, and system is missed
Difference is easily controllable and estimates.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching should also regard the scope of protection of the utility model.
Claims (6)
- A kind of 1. simple aerosol diluter, it is characterised in that including：First pipeline and the second pipeline, first pipeline The inlet end of inlet end and second pipeline is connected with air inlet pipe, the outlet side of first pipeline and second pipeline Outlet side be connected with escape pipe, be in series with high efficiency particulate air filter and the first regulating valve on first pipeline, second pipe Capillary and the second regulating valve are in series with road, one piece of pressure difference meter is parallel between the both ends of the capillary.
- 2. simple aerosol diluter according to claim 1, it is characterised in that first regulating valve is lower resistance Ball valve.
- 3. simple aerosol diluter according to claim 1, it is characterised in that second regulating valve is regulation performance Good reset valve.
- 4. simple aerosol diluter according to claim 1, it is characterised in that the resistance of permission is in the capillary 50-200Pa。
- 5. simple aerosol diluter according to claim 1, it is characterised in that the internal diameter of the capillary is 1.0- 2.0mm。
- 6. simple aerosol diluter according to claim 1, it is characterised in that the capillary selects polytetrafluoroethylene (PTFE) Capillary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721110935.0U CN207081601U (en) | 2017-08-28 | 2017-08-28 | A kind of simple aerosol diluter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721110935.0U CN207081601U (en) | 2017-08-28 | 2017-08-28 | A kind of simple aerosol diluter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207081601U true CN207081601U (en) | 2018-03-09 |
Family
ID=61421304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721110935.0U Active CN207081601U (en) | 2017-08-28 | 2017-08-28 | A kind of simple aerosol diluter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207081601U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108415472A (en) * | 2018-04-25 | 2018-08-17 | 上海市计量测试技术研究院 | The hair mist concentration adjusting device of aerosol source |
| CN110220765A (en) * | 2018-07-24 | 2019-09-10 | 江苏苏净集团有限公司 | A kind of aerosol dilution device |
| CN111175212A (en) * | 2020-01-17 | 2020-05-19 | 上海理工大学 | Filter check out test set |
| CN111203118A (en) * | 2020-01-17 | 2020-05-29 | 上海理工大学 | Diluting device and system are adjusted in segmentation |
-
2017
- 2017-08-28 CN CN201721110935.0U patent/CN207081601U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108415472A (en) * | 2018-04-25 | 2018-08-17 | 上海市计量测试技术研究院 | The hair mist concentration adjusting device of aerosol source |
| CN110220765A (en) * | 2018-07-24 | 2019-09-10 | 江苏苏净集团有限公司 | A kind of aerosol dilution device |
| CN111175212A (en) * | 2020-01-17 | 2020-05-19 | 上海理工大学 | Filter check out test set |
| CN111203118A (en) * | 2020-01-17 | 2020-05-29 | 上海理工大学 | Diluting device and system are adjusted in segmentation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207081601U (en) | A kind of simple aerosol diluter | |
| CN101354273A (en) | Method and device for measuring compound type gas flow | |
| CN104359661A (en) | Universal valve performance test device | |
| CN205937308U (en) | Servovalve nozzle test system | |
| CN105223046A (en) | Stationary source flue gas particles dilution method automatic constant speed acquisition method | |
| CN105223047A (en) | Stationary source flue gas particles dilution method automatic constant speed acquisition system | |
| CN205157267U (en) | Porous diluting device of smoke particulate | |
| CN104906993B (en) | A kind of automatic mixing device of methane gas and mixing method | |
| CN104180572B (en) | Air-conditioning, the acquisition methods of cross valve initiation value and acquisition device | |
| CN207779516U (en) | A kind of natural gas big flow reality stream calibrating installation | |
| CN211015169U (en) | Control system for temperature of pipeline confluence liquid | |
| CN108398281A (en) | A kind of on-line performance for domestic stove tests system | |
| CN107189938A (en) | A kind of device quantitative for unknown nucleic acid concentration sample P CR | |
| CN205749201U (en) | A kind of cement granularity on-line measuring device improving measurement effect | |
| CN205120442U (en) | Fixed source smoke particulate dilution method sampling system | |
| CN205120434U (en) | Fixed source smoke particulate two -stage dilution method sampling system | |
| CN207908020U (en) | A kind of natural gas big flow reality stream calibrating secondary standard device | |
| CN205841825U (en) | A kind of metering hole adjusting means | |
| CN107702950B (en) | Working method of iodine sampler | |
| Zhang et al. | Experimental study on particle deposition in pipelines in a fresh air system | |
| CN210422525U (en) | Device for improving pipe flow method drilling fluid differential pressure measurement range ratio | |
| CN106940261A (en) | A kind of device and method for being used to directly gather HTHP tail gas | |
| CN106018014A (en) | High precision dilution sampling instrument | |
| CN102323112A (en) | Flow-guiding air duct structure of volatile organic matter detection system | |
| CN207407941U (en) | A kind of automatic switchover double-range flow measurement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |