CN108896429A - A kind of detection device and test method - Google Patents
A kind of detection device and test method Download PDFInfo
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- CN108896429A CN108896429A CN201810593621.3A CN201810593621A CN108896429A CN 108896429 A CN108896429 A CN 108896429A CN 201810593621 A CN201810593621 A CN 201810593621A CN 108896429 A CN108896429 A CN 108896429A
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- 238000001514 detection method Methods 0.000 title claims abstract description 69
- 238000010998 test method Methods 0.000 title claims abstract description 16
- 230000007613 environmental effect Effects 0.000 claims abstract description 53
- 239000000126 substance Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000008595 infiltration Effects 0.000 claims abstract description 21
- 238000001764 infiltration Methods 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000009792 diffusion process Methods 0.000 claims abstract description 17
- 230000008020 evaporation Effects 0.000 claims abstract description 7
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 8
- 231100000719 pollutant Toxicity 0.000 abstract description 8
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- -1 aldehyde ketone Chemical class 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 229960004279 formaldehyde Drugs 0.000 description 2
- 235000019256 formaldehyde Nutrition 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to environmental protection technical fields, more particularly to a kind of detection device.The technical problem to be solved is that no any device and measures can effectively evaluate the accuracy of the different pollutant rate of release results of environmental chamber test different materials.Including:Closed container has volatile liquid for containing；Diffusion device is inserted into the closed container, including infiltration portion and distributes portion, and the infiltration portion is infiltrated in the liquid, and the portion of distributing is located at the outside of the closed container；Inner core is set in the diffusion device, for controlling the evaporation rate of volatile substance.Detection device and test method of the present invention at least have following advantages：Detection device through the invention effectively has rated the accuracy of the different pollutant rate of release results of environmental chamber test different materials.
Description
Technical field
The present invention relates to environmental protection technical fields, more particularly to a kind of detection device and test method.
Background technique
Now, with the raising of the environmental consciousness of people, to personal health, living environment and the pollution journey of article is used
The requirement of degree is higher and higher.Meanwhile with the raising of people's lives level, the development of the science and technology of all trades and professions, for the mankind
While benefiting, also brought corresponding harm, for example, in house decoration, various chemicals, finishing material with
And furniture can all give out the volatilization gas that formaldehyde etc. endangers health；For children, manufacturer is in order to reduce cost, often
Using cheap, the articles for children such as various toys are produced without the material that stringent treatment process is handled, to being in growth hair
The healthy bring for educating the children in period greatly endangers.Therefore, take effectively measure to harmful substance carry out detection and
Processing has been present urgent problem to be solved.
In recent years, the harmful substance contents of construction material, toy, automotive interior material, high molecular material are evaluated gradually
It is the pollutant burst size appraisement system based on dynamic environment cabin from pollutant load transition.Such as GB 18580-2017《Indoor dress
Adorn Form aldehyde release limitation in finishing material wood-based plate and its product》,HJ/T 400-2007《Interior volatile organic matter and aldehyde ketone
Substance sampling determination method》,GB/T 31107-2014《The volatile organic compounds detection general skill of climate compartment in furniture
Art condition》And ISO 12219-1-2012《Volatile organic matter in the method test carriage of vehicle cabin》Distinguish etc. multinomial national and foreign standards
The burst size of the VOC and SVOC of product are evaluated using various small-sized, medium-sized and large-scale environmental chambers.It is detecting and is handling
Also great progress and development at full speed are achieved in the technological means of harmful substance.
Judgement for the accuracy of the detection volatile substance concentration of such as environmental chamber, it is desirable that the emission rate of various compounds
It is predictable, controllable, and emission rate and the emission rate of actual product be in same order, meanwhile, emission rate repeats
Property and have good stability.The accuracy of the detection of environmental chamber could be accurately judged under such stringent conditions.
But currently, any device and measure can effectively evaluate the difference of environmental chamber test different materials not yet
The accuracy of pollutant rate of release result.
Summary of the invention
It is a primary object of the present invention to, a kind of new structural detection device and test method are provided, it is to be solved
Technical problem is the different pollutants release that no any device and measure can effectively evaluate environmental chamber test different materials
The accuracy of rating results.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.It proposes according to the present invention
A kind of detection device, including:
Closed container has volatile liquid for containing；
Diffusion device is inserted into the closed container, including infiltration portion and distributes portion, and the infiltration portion is infiltrated on the liquid
In body, the portion of distributing is located at the outside of the closed container；
Inner core is set in the diffusion device, for controlling the evaporation rate of volatile substance.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, detection device above-mentioned, wherein the closed container includes cup body and the end for sealing the cup body
First end cover of the opening in portion.
Preferably, detection device above-mentioned is inserted wherein the diffusion device includes hollow tube by first sealing cover
Enter the cup body；
The inner core is set in the hollow tube, and the infiltration portion is to be set to the lower sides of the hollow tube to open
Mouthful, the portion of distributing is the opening for being set to the upper portion side wall of the hollow tube.
Preferably, detection device above-mentioned, wherein the diffusion device further includes the second end cover, for described the
The external end that portion is distributed described in for sealing the hollow tube of one end cover.
Preferably, detection device above-mentioned, wherein the hollow tube is made up of resistant material.
Preferably, detection device above-mentioned, wherein the inner core is porous ceramics or sand core.
Preferably, detection device above-mentioned, wherein quantity is two or more.
Also the following technical solution is employed for the object of the invention to solve the technical problems to realize.It proposes according to the present invention
A kind of test method, by above-mentioned detection device, to the method that the precision of environmental chamber detection is tested, including:
By described there is volatile liquid to be packed into the ontology of the detection device, by specified time, test
The concentration of volatile substance described in environmental chamber gas, and calculate the detection device be placed in it is of poor quality before and after the environmental chamber,
Obtain the rate of recovery of the environmental chamber.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
Preferably, test method above-mentioned, including：
The concentration of the volatile substance inside S100, the test environmental chamber, cleans the environmental chamber, by the volatilization
The concentration of substance is reduced to specified numerical value；
S200, injection specified amount has volatile liquid in the ontology of the detection device, in institute
It states and is packed into the inner core in hollow tube, the hollow tube is sealed by the second end cover, it is close by first end cover
The closed container is sealed, the diffusion device is inserted into, so that the infiltration portion of the hollow tube is completely immersed in the liquid；
S300, the weight m for weighing the detection device0；
Temperature T, humidity RH, the ventilation rate N of S400, the setting environmental chamber, start the environmental chamber；
S500, the detection device is put into the environmental chamber, extracts the hollow tube, be placed in institute in the infiltration portion
In the state of stating in liquid, the portion of distributing exposes in the outside of first end cover；
S600, by time t, take out the detection device, the hollow tube be inserted into the ontology, so that described dissipate
Hair portion is placed in the ontology, weighs the detection device weight m1；
S700, detection environmental chamber in the volatile substance concentration c；
S800, the rate of recovery that environmental chamber is calculated by formula (1)；
N=(c × N × V × t)/Δ m × 100% ... ... (1)
Wherein, Δ m=m0-m1。
Preferably, test method above-mentioned, wherein in the step s 100, including, it will be described by the method for high-temperature cleaning
The concentration of VOC and SVOC in environmental chamber are reduced to 0-3 μ g/m3, the concentration of TVOC or TSVOC is reduced to 0-30 μ g/m3。
By above-mentioned technical proposal, detection device and test method of the present invention at least have following advantages：
Detection device through the invention effectively has rated the different pollutants release speed of environmental chamber test different materials
The accuracy of rate result.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is the schematic diagram of the use state for the detection device that the embodiment of the present invention proposes；
Fig. 2 is the schematic diagram of the preparation state for the detection device that the embodiment of the present invention proposes；
Fig. 3 is the schematic diagram of the multiple devices for the detection device that the embodiment of the present invention proposes；
Fig. 4 is the flow chart for the test method that the embodiment of the present invention proposes.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to detection device proposed according to the present invention its specific embodiment, structure, feature and its effect,
Detailed description is as follows.In the following description, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.This
Outside, the special characteristic, structure or feature in one or more embodiments can be combined by any suitable form.
As illustrated in fig. 1 and 2, a kind of detection device that one embodiment of the present of invention proposes comprising:Closed container is used
There is volatile liquid 6 in containing；Diffusion device is inserted into the closed container, including infiltration portion and distributes portion, the leaching
Profit portion is infiltrated in the liquid 6, and the portion of distributing is located at the outside of the closed container；Inner core 3 is set to described distribute and sets
It is standby interior, for controlling the evaporation rate of volatile substance.
Detection device through the invention will have in volatile liquid injection closed container, and volatile substance passes through leaching
Profit portion enters inner core, is dispersed into outside detection device by the portion of distributing.It will test device to be put into environmental chamber, detection can be passed through
Concentration of the volatile substance that device distributes in environmental chamber, and the weight difference of test front and back detection device, detect environmental chamber
The rate of recovery.In order to accurately evaluate the rate of recovery of environmental chamber, needs to control the evaporation rate of volatile substance, therefore, set distributing
Standby internal setting inner core, realizes the control to volatile substance evaporation rate.Further, the contact by infiltration portion with liquid
Area and the portion of distributing are exposed to the evaporation rate of the adjusting control volatile substance of the area outside closed container.
In conclusion detection device through the invention, the difference for effectively having rated environmental chamber test different materials is dirty
Contaminate the accuracy of object rate of release result.
Further, it is preferred that, the closed container includes cup body 1 and the end for sealing the cup body 1
Opening the first end cover 5.
In the preferred embodiment, closed container is constituted by the first end cover and cup body, structure is simple, manufacture
It is at low cost.
It is preferred that cup body is made of preferable materials of corrosion resistances such as stainless steel, glass or polytetrafluoroethylene (PTFE).First sealing
End cap can be made of rubber, it is preferred to use the rubber material with corrosion resistance.It can also preferably be made of glass close
The ontology and the first end cover for closing container carry out frosted processing in the joint of ontology and the first end cover, to avoid waving
It sends out substance and is dispersed into outside from the joint.
Further, it is preferred that, the diffusion device includes hollow tube 2, is inserted by first sealing cover 5
The cup body 1；The inner core 3 is set in the hollow tube 2, and the infiltration portion is the lower side for being set to the hollow tube 2
The opening of wall, the portion of distributing are the opening for being set to the upper portion side wall of the hollow tube 2.
One opening is respectively set on the lower part of hollow tube and the side wall on top, thus formed the infiltration portion and it is described dissipate
Hair portion, to allow the lower part of inner core that can immerse liquid, so as to absorb and parse the volatile substance in liquid, and from interior
The opening on the top of core is dispersed into the outside of closed container.
In the present embodiment, it should be noted that, must when the portion of distributing is exposed to the outside of the first end cover completely
It must guarantee that infiltration portion at least part immerses in liquid, to guarantee that infiltration portion can absorb from liquid and parse volatile substance.
Further, it is preferred that, the diffusion device further includes the second end cover 4, for described first
The external end that portion is distributed described in for sealing the hollow tube 2 of end cover 5.
Hollow tube is the tubulose of opposite plug at end part close to distributing the open-ended of portion, when being full of inner core in hollow tube,
The portion of distributing can no longer sidewall opening, using the opening of end as distributing portion.But in this way be arranged after, the problems of be,
Hollow tube passes through the first end cover and is not fixed easily in cup body, and the bottom for the cup body that is easy to slip is made if it is glass material
Diffusion device, be easy to cause equipment broken.It is therefore preferable that the portion of distributing is set on the side wall of hollow tube, the opening of end
If volatile substance is distributed from the opening of end and from distributing portion two without sealing, it is unfavorable for distributing the control of speed, because
This, the end of hollow tube opening by the second end cover seal, while the second end cover play to hollow tube to
The restriction effect of lower slider.
Further, it is preferred that, the hollow tube 2 is made up of resistant material.
It is preferred that hollow tube of preferable materials of corrosion resistances such as stainless steel, glass or polytetrafluoroethylene (PTFE) by being made.Guarantee
On the basis of hollow tube is not corroded by the liquid with acid-base property, since these materials have the not meable performance of liquid,
So that the volatile substance in liquid can only enter hollow tube by infiltration portion, be effectively guaranteed volatile substance distributes speed.
Further, it is preferred that, the inner core 3 is porous ceramics or sand core.
The material of inner core is needed using the characteristic that can absorb and parse volatile substance from liquid, in numerous materials
In, it is preferred to use porous ceramics or sand core make inner core, have effectively achieved the absorption and parsing of volatile substance.
Further, it is preferred that, as shown in figure 3, the quantity of the detection device be two or more.
In an embodiment of the present invention, multiple detection devices can be used simultaneously.The closed container of each detection device fills
Different liquid, so as to simultaneously carry out plurality of liquid simultaneously volatilization after the environmental chamber rate of recovery test.Same liquid can also be filled
Body distributes speed for increase volatile substance.The closed container of each monitoring device and/or the size of hollow tube can not
Together, it in test, to be tested with the different speed that distributes, is returned to obtain in the different environmental chambers distributed under speed
It produces effects the data of fruit.In short, multiple detection devices are arranged, facilitate progress flexile, meet the test of different requirements.
As shown in figure 4, another embodiment of the present invention proposes a kind of test method, including：Described will have volatile
Liquid is packed into the ontology of the detection device, by specified time, tests volatile substance described in environmental chamber gas
Concentration, and calculate the detection device and be placed in of poor quality before and after the environmental chamber, obtain the rate of recovery of the environmental chamber.
Using detection device of the invention, by the above method, environmental chamber test different materials are effectively had rated not
With the accuracy of pollutant rate of release result.
Specific test method, as shown in the test method flow chart of Fig. 4, including：
S100, the accuracy first of all for guarantee test test the concentration of the volatile substance inside the environmental chamber,
The environmental chamber is cleaned by the method for high-temperature cleaning, the concentration of VOC and SVOC in the environmental chamber are reduced to 0-3 μ g/
m3, preferably 2 μ g/m3Hereinafter, the concentration of TVOC or TSVOC is reduced to 0-30 μ g/m3, preferably 20 μ g/m3Below；
S200, injection specified amount has volatile liquid in the ontology of the detection device, in institute
It states and is packed into the inner core in hollow tube, the hollow tube is sealed by the second end cover, it is close by first end cover
The closed container is sealed, the diffusion device is inserted into, so that the infiltration portion of the hollow tube is completely immersed in the liquid；
S300, the weight m for weighing the detection device0；
Temperature T, humidity RH, the ventilation rate N of S400, the setting environmental chamber, start the environmental chamber；
S500, the detection device is put into the environmental chamber, extracts the hollow tube, be placed in institute in the infiltration portion
In the state of stating in liquid, the portion of distributing exposes in the outside of first end cover；
S600, by time t, take out the detection device, the hollow tube be inserted into the ontology, so that described dissipate
Hair portion is placed in the ontology, weighs the detection device weight m1；
S700, detection environmental chamber in the volatile substance concentration c；
S800, the rate of recovery that environmental chamber is calculated by formula (1)；
N=(c × N × V × t)/Δ m × 100% ... ... (1)
Wherein, Δ m=m0-m1。
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, according to
According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, this hair is still fallen within
In the range of bright technical solution.
Claims (10)
1. a kind of detection device, which is characterized in that including:
Closed container has volatile liquid for containing；
Diffusion device is inserted into the closed container, including infiltration portion and distributes portion, and the infiltration portion is infiltrated on the liquid
In, the portion of distributing is located at the outside of the closed container；
Inner core is set in the diffusion device, for controlling the evaporation rate of volatile substance.
2. detection device according to claim 1, which is characterized in that
The closed container includes the first end cover of the opening of cup body and the end for sealing the cup body.
3. detection device according to claim 2, which is characterized in that
The diffusion device includes hollow tube, is inserted into the cup body by first sealing cover；
The inner core is set in the hollow tube, and the infiltration portion is the opening for being set to the lower sides of the hollow tube,
The portion of distributing is the opening for being set to the upper portion side wall of the hollow tube.
4. detection device according to claim 3, which is characterized in that
The diffusion device further includes the second end cover, for sealing the hollow tube in the external of first end cover
Close to the end for distributing portion.
5. detection device according to claim 3, which is characterized in that
The hollow tube is made up of resistant material.
6. detection device according to claim 3, which is characterized in that
The inner core is porous ceramics or sand core.
7. detection device according to claim 1, which is characterized in that
Quantity is two or more.
8. a kind of test method, which is characterized in that by the detection device as described in claim 1 to 7 is any, examined to environmental chamber
The method that the precision of survey is tested, including:
By described there is volatile liquid to be packed into the ontology of the detection device, by specified time, tests environment
The concentration of volatile substance described in the gas of cabin, and calculate of poor quality, the acquisition that the detection device is placed in front of and after the environmental chamber
The rate of recovery of the environmental chamber.
9. test method according to claim 8, which is characterized in that
Including：
The concentration of the volatile substance inside S100, the test environmental chamber, cleans the environmental chamber, by the volatile substance
Concentration be reduced to specified numerical value；
S200, injection specified amount has volatile liquid in the ontology of the detection device, in described
It is packed into the inner core in blank pipe, the hollow tube is sealed by the second end cover, institute is sealed by first end cover
Closed container is stated, the diffusion device is inserted into, so that the infiltration portion of the hollow tube is completely immersed in the liquid；
S300, the weight m for weighing the detection device0；
Temperature T, humidity RH, the ventilation rate N of S400, the setting environmental chamber, start the environmental chamber；
S500, the detection device is put into the environmental chamber, extracts the hollow tube, be placed in the liquid in the infiltration portion
In the state of in body, the portion of distributing exposes in the outside of first end cover；
S600, by time t, take out the detection device, the hollow tube be inserted into the ontology, so that described distribute portion
It is placed in the ontology, weighs the detection device weight m1；
S700, detection environmental chamber in the volatile substance concentration c；
S800, the rate of recovery that environmental chamber is calculated by formula (1)；
Wherein, Δ m=m0-m1。
10. test method according to claim 9, which is characterized in that
In the step s 100, including, the concentration of VOC and SVOC in the environmental chamber are reduced to by the method for high-temperature cleaning
0-3μg/m3, the concentration of TVOC or TSVOC is reduced to 0-30 μ g/m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810593621.3A CN108896429B (en) | 2018-06-11 | 2018-06-11 | Standard gas emission device with controllable release rate and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810593621.3A CN108896429B (en) | 2018-06-11 | 2018-06-11 | Standard gas emission device with controllable release rate and application thereof |
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| CN108896429B CN108896429B (en) | 2021-05-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749708A (en) * | 2019-11-29 | 2020-02-04 | 北京市环境保护科学研究院 | Method for detecting content of volatile organic compounds in daily consumer product |
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