CN108776054A - A kind of standard distribution sample and test method for the test environment cabin rate of recovery - Google Patents
A kind of standard distribution sample and test method for the test environment cabin rate of recovery Download PDFInfo
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- CN108776054A CN108776054A CN201810637323.XA CN201810637323A CN108776054A CN 108776054 A CN108776054 A CN 108776054A CN 201810637323 A CN201810637323 A CN 201810637323A CN 108776054 A CN108776054 A CN 108776054A
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- environmental chamber
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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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
Abstract
The invention discloses a kind of standard distribution samples and test method for the test environment cabin rate of recovery, are related to environmental protection tests technical field, can carry out effective evaluation to the rate of recovery of environmental chamber in time.For the standard distribution sample of the test environment cabin rate of recovery, including：Container is distributed, for holding target liq；The upper port of container is distributed there are multiple, lid is distributed with upper port size Matching installation, distributes and cover equipped with multiple perforation；It is inserted into diffuser by perforation, the lower port of diffuser is inserted into the liquid level of target liq or less；It is equipped with sealing bolt at perforation, the gap distributed between depth and sealing diffuser and perforation in container is inserted into for fixing diffuser；Cover is distributed distributing the side of covering and being equipped with, is equipped with gasket distributing cover inner surface, gasket number is identical with diffuser number, the upper port for blocking the diffuser when closing distributes cover.Present invention is mainly used for the rate of recovery in test environment cabin.
Description
Technical field
The present invention relates to environmental protection tests technical fields more particularly to a kind of standard for the test environment cabin rate of recovery to distribute
Sample and test method.
Background technology
With the improvement of people ' s living standards largely using wood-based plate, adhesive, wallpaper, painting during many house decorations
The building material products such as material, paint, carpet and various furniture, this behavior cause more and more room air pollutions.In recent years, state
Family and the common people are higher and higher to the attention rate for living environment of living, wood-based plate, coating, carpet, adhesive, furniture, composite wooden
Actively promote the pollutant burst size control system based on dynamic environment cabin in each field such as product.Such as GB 18580-2017《It is indoor
Form aldehyde release is limited the quantity in decorating and renovating material wood-based plate and its product》With JG/T 528-2017《Architectural decorative and fitting materials volatilize
Property organic matter release rate test method-test chamber method》Deng.
Currently, using dynamic cabin method in the pollutant burst size test process of building materials and furniture item, environmental chamber
The integrated performance indexs such as background and the rate of recovery are particularly important.The pollutant background of environmental chamber can be tested by simple gas production
Process is evaluated, but the evaluation of its rate of recovery needs corresponding standard substance emitting.The mark of domestic and foreign literature report at present
Standard, which distributes sample, mainly to be had：Building material product slice, calibrating gas, tubular liquid-membrane structure standard distribute three kinds of source, but existing market
It also is difficult to buy corresponding standard substance emitting, thus lacks relevant criterion substance emitting in the market, it is relatively difficult to achieve always right
The pollutant rate of recovery of environmental chamber carries out unified evaluation.Therefore, it is easy to send out during the pollutant burst size of test product
Life is then substantially reduced due to the situation that the environmental chamber rate of recovery is low and causes pollutant burst size test result relatively low and is utilized environment
The accuracy of the pollutant burst size of cabin test product.
Invention content
In view of this, the present invention provides a kind of standard distribution sample and test method for the test environment cabin rate of recovery,
Main purpose is the unified standard of the optimal inspection environmental chamber rate of recovery, can be in time to environmental chamber using the standard distribution sample
Rate of recovery while carry out effective evaluation, also greatly promote the intelligence of test process, improve testing efficiency.
In order to achieve the above object, present invention generally provides following technical solutions：
On the one hand, the present invention provides a kind of standard distribution samples for the test environment cabin rate of recovery, including：
Container is distributed, for holding target liq；The upper port for distributing container is there are multiple, with the upper port ruler
Very little Matching installation distributes lid, and described distribute covers equipped with multiple perforation；It is inserted into diffuser, the diffuser by the perforation
Lower port be inserted into the liquid level of the target liq or less；Sealing bolt is equipped at the perforation, for fixing the expansion
The depth in container is distributed described in separate tube insertion and seals the gap between the diffuser and the perforation；It is distributed described
The side of covering, which is equipped with, distributes cover, and gasket, the gasket number and the diffuser number are equipped in the cover inner surface that distributes
Mesh is identical, and the upper port of the diffuser is blocked when for distributing cover described in the closing.
Optionally, the container that distributes includes multiple containers chamber, is mutually isolated between the multiple container chamber.
Optionally, the standard distribution sample further includes：
Container protective cover is distributed, is matched with the size for distributing container, described container is distributed for covering.
Optionally, the standard distribution sample further includes：
Electromagnetic assembly, for receiving remote controller signal, passes through the electromagnetic assembly mounted on the bottom for distributing container
Control, which opens/closes, described to be distributed cover or described distributes container protective cover.
Optionally, the target liq is volatile organic compounds liquid or semi-volatile organic compounds liquid.
On the other hand, the present invention also provides a kind of test methods of test environment cabin rate of recovery, are used for for such as above-mentioned
The standard distribution sample of the test environment cabin rate of recovery, this method include：
The quality for weighing the standard distribution sample for holding target liq, obtains the first numerical value, by the standard distribution sample
It is put into environmental chamber, wherein the target liq is volatile organic compounds liquid or semi-volatile organic compounds liquid
Body；
The performance parameter of the environmental chamber is set according to prerequisite, the standard distribution sample is put into the environmental chamber
Interior, the control unlatching standard distribution sample distributes cover, in testing the target liq volatilization process, according to preset time
Period records target liq described in the environmental chamber internal cause and distributes corresponding gaseous state concentration values；
When the test target liq volatilization process finishes, the control closing standard distribution sample distributes cover, takes
Go out the standard distribution sample and weigh the quality of the standard distribution sample, obtains second value；
According to the difference of first numerical value and the second value, obtain described in being put into the standard distribution sample
With from the corresponding mass difference after environmental chamber taking-up before environmental chamber, it is labeled as third value；
According to target described in the performance parameter of the environmental chamber of the setting and the environmental chamber internal cause of the record
Gaseous state concentration values corresponding to emission of liquid calculate the standard distribution sample and volatilize in the environmental chamber internal cause target liq
The numerical value of corresponding burst size is obtained, the 4th numerical value is labeled as；
The percentages for calculating the 4th numerical value and the third value obtain the corresponding recycling of the environmental chamber
Rate.
Optionally, the performance parameter that the environmental chamber is set according to prerequisite, including：
Adjust temperature, humidity, ventilation rate in the environmental chamber.
Optionally, when distributing container bottom and being equipped with electromagnetic assembly, cover is distributed by electromagnetic assembly control and is opened
It opens/closes, the method further includes：
Control signal is sent to the electromagnetic assembly that container bottom is installed that distributes of the standard distribution sample, in the environment
Unlatching/closing that control in the target liq volatilization process distributes cover is tested in cabin, to adjust the target liq described
Emission rate in environmental chamber.
Optionally, when distributing container bottom and being equipped with electromagnetic assembly, cover is distributed by electromagnetic assembly control and is opened
It opens/closes, the method further includes：
When the multiple containers intracavitary for distributing container injects different target liqs, opened by distributing cover described in control
It opens/closes, to test different target emission of liquid to the corresponding gas concentration value of the environmental chamber simultaneously.
By above-mentioned technical proposal, technical solution provided by the invention at least has following advantages：
A kind of standard distribution sample and test method for the test environment cabin rate of recovery provided by the invention, the standard dissipate
The apparatus structure for sending out sample include mainly distribute container, with distribute the matched multiple lids, scattered of distributing of the multiple upper port sizes of container
Hair cover the perforation set, the diffuser being inserted by the perforation, for fasten distribute lid distribute cover.When need utilize the device
When structure carries out the test environment cabin rate of recovery, it will distribute and hold target liq in container, will simply, easily complete accordingly
Standard distribution sample for the test environment cabin rate of recovery.Test method of the present invention is by the way that standard distribution sample is put into environment
In cabin, to test the corresponding burst size of target liq volatilization in the standard distribution sample, while it can also be opened by controlling to adjust
The number for distributing cover is opened/closed, target liq emission rate in environmental chamber is rapidly adjusted to reach, optimal inspection process,
After completing test assignment, the quality difference value for the front and back standard distribution sample of burst size and test that test obtains is compared
Compared with to obtain percentages, that is, the corresponding rate of recovery of the environmental chamber, and then using standard distribution sample realization to environment
The rate of recovery in cabin is evaluated, and further, before carrying out the pollutant burst size test of product, can utilize the present invention
The standard distribution sample of offer and the evaluation method for evaluating the environmental chamber rate of recovery, in advance to the environmental chamber of pending test assignment
The rate of recovery is evaluated, and whether the rate of recovery to judge the environmental chamber is up to standard, if can also in time be replaced simultaneously so as to not up to standard
The environmental chamber for selecting the rate of recovery up to standard carries out test assignment.Compared with prior art, the pollutant in test product is avoided to discharge
It is easy to cause pollutant burst size test result relatively low there is a situation where low due to the environmental chamber rate of recovery during amount, cause
The accuracy substantially reduced using the pollutant burst size of environmental chamber test product the problem of.Optimal inspection environmental chamber of the present invention
The unified standard of the rate of recovery can carry out effective evaluation, to ensure to the rate of recovery of environmental chamber in advance using standard distribution sample
The environmental chamber for selecting the rate of recovery up to standard during test product pollutant burst size completes test, ensures the accurate of test result
Property.The standard distribution sample makes simple, convenient simultaneously, thus is more prone to expanded and more contributes to simplify existing survey
The Complicated Flow for trying the rate of recovery, greatly improves testing efficiency.
Above description is only the general introduction of technical solution 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, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, below the special specific implementation mode for lifting the present invention.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 shows a kind of knot of standard distribution sample for the test environment cabin rate of recovery provided in an embodiment of the present invention
Structure schematic diagram；
Fig. 2 shows the vertical views for distributing lid of standard distribution sample provided in an embodiment of the present invention；
Fig. 3 shows that the diffuser of standard distribution sample provided in an embodiment of the present invention is inserted into the structural representation for distributing lid
Figure；
Fig. 4 shows another standard distribution sample for the test environment cabin rate of recovery provided in an embodiment of the present invention
Structural schematic diagram；
Fig. 5 shows a kind of evaluation environmental chamber rate of recovery method flow diagram provided in an embodiment of the present invention；
Fig. 6 shows provided in an embodiment of the present invention in testing standard distributes sample during n-undecane emission of liquid
Detect the curve synoptic diagram of n-undecane concentration in environmental chamber.
Reference numeral：
1, container is distributed；2, lid is distributed；21, it perforates；3, diffuser；4, sealing bolt；5, cover is distributed；6, gasket；7,
Distribute container protective cover；8, electromagnetic assembly；9, container chamber.
Specific implementation mode
Exemplary embodiment of the present invention is more fully described below with reference to accompanying drawings.Although showing the present invention in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the present invention without should be by embodiments set forth here
It is limited.It is to be able to be best understood from the present invention on the contrary, providing these embodiments, and can be by the scope of the present invention
Completely it is communicated to those skilled in the art.
As shown in Figure 1, an embodiment of the present invention provides a kind of standard distribution sample for the test environment cabin rate of recovery, packet
It includes：Container 1 is distributed, for holding target liq；The upper port for distributing container 1 is there are multiple, with the upper port size
Matching installation distributes lid 2, and the lid 2 that distributes is equipped with multiple perforation 21；It is inserted into diffuser 3 by the perforation 21, it is described
The lower port of diffuser 3 is inserted into the liquid level of the target liq or less；It is equipped with sealing bolt 4 at the perforation 21, is used for
The fixed diffuser 3 is inserted between the depth distributed in container 1 and the sealing diffuser 3 and the perforation 21
Gap；It is described distribute to be equipped with above lid 2 distribute cover 5, it is described distribute 5 inner surface of cover be equipped with gasket 6, the gasket
6 numbers are identical as 3 number of the diffuser, and the upper port of the diffuser 3 is blocked when for distributing cover 5 described in the closing.
The embodiment of the present invention is illustrated provided in an embodiment of the present invention for evaluating by the process and principle of implementation
The standard distribution sample of the environmental chamber rate of recovery, it is specific as follows：
In embodiments of the present invention, multiple upper ports are preset distributing 1 upper surface of container, for each upper port size
Lid 2 is distributed with corresponding, this distributes lid 2 and is equipped with perforation 21, for being inserted into diffuser 3, will distribute 1 inside of container and outside
It is connected to, while fixing the insertion of diffuser 3 using sealing bolt 4 and distributing depth in container 1, and can be at perforation 21
Using the sealing bolt 4 seal diffuser 3 and between it there are gap, distribute 1 internal cause target liquid of container to avoid in test
The gaseous products, which are not all of from diffuser 3, when body volatilization generates the burst size of gaseous products distributes to environmental chamber, but portion
It point is distributed to environmental chamber from perforation 21, if there are such situation, will cause to occur cannot accurately control targe liquid
The problem of emission rate, while can also influence to distribute vapor liquid equilibrium in container 1.It is each distribute to be equipped on lid 2 distribute cover 5,
It distributes 5 inner surface of cover and is equipped with gasket 6, the number of the gasket 6 and distribute diffuser 3 that distributing under cover 5 is inserted on lid 2
Number is identical, and the gasket 6 for when closing distributes cover 5, distributing 5 inner surface of cover just right can block diffusion
The upper port of pipe 2, the gaseous material for preventing target liq from volatilizing at this moment are distributed by diffuser 3 to environmental chamber again
It is interior.
Distributing container 1 can select stainless steel, glass or polytetrafluoroethylene (PTFE) etc. to be resistant to volatile organic compounds or half
The material of volatile organic compounds corrosion passes through test target liquid distributing in environmental chamber for holding target liq
Data, to realize the rate of recovery in test environment cabin indirectly.Equally, the material of diffuser 3 be also can the preferable material of corrosion resistance
Matter.When preparing to start the test assignment of the test environment cabin rate of recovery, opening distributes cover 5, distributes lid 2, by distributing in container 1
One or more upper port position at, target liq is injected in container 1 to distributing, liquid inject after, lid 2 will be distributed
It is fastened with 1 upper port of container is distributed, during fastening, sealing bolt 4 is adjusted, to ensure that the lower port by diffuser 3 is inserted
Enter to the liquid level of target liq hereinafter, being connected at this time with target liq formation at 3 lower port of diffuser, in favor of working as target liq
The gaseous products of volatilization can be distributed to environmental chamber by diffuser 3 when volatilization.Such as：Distribute target liq in container 1
It can include but is not limited to hold more than 2/3, and need to ensure liquid level and distribute the upper port of container 1 there are specified gap, with
Conducive to the vapor liquid equilibrium that formation is stable, while 3 lower port of diffuser is immersed under liquid level, and is referred to the reservation of 1 bottom of container is distributed
Fixed gap, in favor of the level balance inside and outside diffuser 3.
Further, when the number for distributing lid 2 in standard distribution sample is multiple, ON/OFF can be beaten by adjusting
The number for distributing cover 5 is closed, the emission rate for simply and rapidly adjusting target liq in the standard distribution sample is reached.
It further, can on lid 2 to adjust each distribute correspondingly, the number for distributing perforation 21 on lid 2 can also be adjusted
With 3 number of diffuser of insertion, so distribute 2 number of lid it is set in the case of, distribute cover 5 by opening, may be implemented fast
Adjust the emission rate of target liq fastly, if while one to distribute 3 number of diffuser being inserted on lid 2 more, correspondingly, beating
It opens one and distributes cover 5, target liq emission rate is influenced more apparent.
Standard distribution sample provided in an embodiment of the present invention for the test environment cabin rate of recovery, by the standard distribution sample
It is put into environmental chamber, according to pre-set environmental chamber performance parameter, such as temperature, humidity, ventilation rate etc., distributes container 1
The target liq volatilization inside held, and distributed to environmental chamber by diffuser 3, it is then interior at the appointed time, at least more than
24 hours, the concentration variation numerical value of the gaseous material of generation can be distributed with test environment cabin internal cause target liq during this period, when
When the standard distribution sample is taken out out of environmental chamber, it can be specified with above-mentioned according to pre-set environmental chamber performance parameter
The above-mentioned concentration recorded in time changes numerical value, within a specified time measured because target liq volatilizees corresponding release
It measures, the above-mentioned burst size obtained in the embodiment of the present invention is the significant data for evaluating the environmental chamber rate of recovery, for complete
At simply and rapidly to the rate of recovery of environmental chamber progress effectively, accurately evaluate.
A kind of standard distribution sample and test method for the test environment cabin rate of recovery provided by the invention, the standard dissipate
The apparatus structure for sending out sample include mainly distribute container, with distribute the matched multiple lids, scattered of distributing of the multiple upper port sizes of container
Hair cover the perforation set, the diffuser being inserted by the perforation, for fasten distribute lid distribute cover.When need utilize the device
When structure carries out the test environment cabin rate of recovery, it will distribute and hold target liq in container, will simply, easily complete accordingly
Standard distribution sample for the test environment cabin rate of recovery.Standard distribution sample provided in an embodiment of the present invention, main purpose exist
In the unified standard of the optimal inspection environmental chamber rate of recovery, the rate of recovery of environmental chamber can be carried out in advance using standard distribution sample
Effective evaluation is protected with ensuring that the environmental chamber for selecting the rate of recovery up to standard during test product pollutant burst size completes test
Demonstrate,prove the accuracy of test result.Simultaneously the standard distribution sample make it is simple, convenient, thus be more prone to it is expanded and more added with
The Complicated Flow for helping simplify the existing test rate of recovery, greatly improves testing efficiency.
The present invention is described in further detail with reference to the accompanying drawings and examples, it is as follows：
Further, it will distribute and be isolated into multiple containers chamber 9 in container 1, for holding different mesh in container chamber 9
Standard liquid body, and each container chamber is designed with upper port, distributes lid 2 with the upper port size Matching installation, distributes and set on lid 2
Have a perforation 21, diffuser 3 is inserted by perforation 21 in container chamber 9, and keep the lower port of diffuser 3 immerse target liquid level with
Under, accordingly, during target liq discharges pollutant in test environment cabin, appearance can also be distributed by standard distribution sample
Hold different target liquid in the different vessels chamber 9 of device 1, and test be carried out at the same time to plurality of target liquid, with obtain it is multiple not
The corresponding test result data with target liq can be in order to the environment being calculated using multiple test result data
The cabin rate of recovery is corrected, and improves the accuracy rate of the test environment cabin rate of recovery method.
Further, container protective cover 7 can also be distributed for its installation according to the size for distributing container 1, it is scattered for protecting
The components such as hair net 5, diffuser 3, for example during experimenter moves standard distribution sample, avoid diffuser 3
Touched or shock.Further, when being taken out from environmental chamber before standard distribution sample is put into environmental chamber or by it,
Multiple-protection is realized using container protective cover 7 is distributed, and is avoided the pollutant that target liq distributes from being expelled in air, is then kept away
Exempt from experimental data inaccuracy, while also contributing to Protection personnel to suck the gas distributed at diffuser 3 at work
State substance, to reduce the injury caused by human body.
Further, electromagnetic assembly 8 can also be installed distributing 1 bottom of container body, for receiving remote controller signal, utilizes
The electromagnetic assembly 8 may be implemented remote control and open/close to distribute cover 5 or distribute container protective cover 7, to using intelligent
Long-distance remote control substitute experimenter it is manually opened/close and distribute cover 5 or distribute the operation of container protective cover 7, to avoid
This sucks the gaseous material distributed in the process, is damaged to human body, while according to the distant control function, can also be in test target
Remote control unlatching/closing distributes cover 5 during evaporating, and the quantity for the diffuser 3 for distributing gaseous material is used in adjustment,
To realize indirectly during the test adjustment target liq emission rate, thus may be implemented in embodiments of the present invention with
When remote control standard distribution sample in target liq emission rate so that test process is simpler, flexible, in turn
Help to be promoted the accuracy, comprehensive of final testing result.
Further, the target liq of the embodiment of the present invention can be volatile organic compounds liquid or half volatile
The solution such as liquid organic compounds, such as toluene, n-undecane, it should be noted that when utilization volatile organic compounds liquid
Body is tested, and test effect data is preferable.
As shown in figure 5, the embodiment of the present invention additionally provides a kind of test method of test environment cabin rate of recovery, for as above
The standard distribution sample for the test environment cabin rate of recovery of statement is stated, this method includes：
Step 101, weighing hold the quality of the standard distribution sample of target liq, obtain the first numerical value, standard is distributed
Sample is put into environmental chamber.
Wherein, target liq can be volatile organic compounds liquid or semi-volatile organic compounds liquid, than
Such as toluene, n-undecane solution, it should be noted that tested when using volatile organic compounds liquid, test effect
Fruit data are preferable.
Step 102, the performance parameter that environmental chamber is arranged according to prerequisite, standard distribution sample is put into environmental chamber,
Control is opened distributing for standard distribution sample and is covered on during test target evaporates, and according to preset time period, records ring
Border cabin internal cause target liq distributes corresponding gaseous state concentration values.
Wherein, the performance parameter of environmental chamber is set according to prerequisite, including：Adjust temperature in the environmental chamber, humidity,
Ventilation rate.
Step 103, when the test target process of evaporating finishes, what control standard of closure distributed sample distributes cover, takes
Go out standard distribution sample and weigh the quality of standard distribution sample, obtains second value.
Step 104, according to the difference of the first numerical value and second value, obtain standard distribution sample being put into the environment
Before cabin with taken out from environmental chamber after corresponding mass difference, be labeled as third value.
Step 105, according to the performance parameter of environmental chamber and the environmental chamber internal cause target liq of record of setting distribute pair
The gaseous state concentration values answered calculate standard distribution sample and volatilize to obtain the number of corresponding burst size in environmental chamber internal cause target liq
Value is labeled as the 4th numerical value.
Step 106, the percentages for calculating the 4th numerical value and third value, obtain the corresponding rate of recovery of environmental chamber.
Further, when distributing 1 bottom of container and being equipped with electromagnetic assembly 8, cover is distributed by the control of electromagnetic assembly 8 and is opened
When opening/closing, then control signal is sent to the electromagnetic assembly 8 that 1 bottom of container is installed that distributes of standard distribution sample, in environmental chamber
Control distributes unlatching/closing of cover 5 during interior test target evaporates, and speed is distributed in environmental chamber to adjust target liq
Rate.
Further, when distributing 1 bottom of container and being equipped with electromagnetic assembly 8, cover is distributed by the control of electromagnetic assembly 8 and is opened
It opens/closes, when injecting different target liqs in the multiple containers chamber 9 for distributing container 1,5 unlatchings of cover/pass is distributed by control
It closes, to test different target emission of liquid to the corresponding gas concentration value of environmental chamber simultaneously.
Embodiment provides according to the present invention above-mentioned standard distribution sample for the test environment cabin rate of recovery and above-mentioned
The method of the test environment cabin rate of recovery, the embodiment of the present invention will also enumerate specific implementation method with to above-mentioned standard distribution sample
It is described in further detail with test method, steps are as follows：
(1), firstly for the emission rate demand of different target liqs, the number for distributing lid 2, perforation 21 can be preset
Number, be inserted into the number of diffuser 3, distribute unlatching/closing of cover 5 will pass through control, adjust target liq indirectly
Emission rate.
(2), a certain amount of target liq, i.e. volatile organic compounds are injected in distributing container 1, for example n-undecane is molten
Liquid so that 3 lower port of diffuser immerses target liq, and liquid level and distributes at the upper port of container body 1 there are a fixed gap,
Closing distributes cover 5, covers and distributes container protective cover 7, standard distribution sample is put into environmental chamber.
(3), the concentration of the background volatile organic compounds in test environment cabin, and pass through the modes such as cleaning or high-temperature catalytic
The concentration of its simple target volatile organic compounds is set to be less than 2 μ g/m3.Here, ensureing environmental chamber background concn to finally surveying
Test result not will produce harmful effect.
(4), the quality for weighing standard distribution sample is denoted as m1。
(5), after stable, expansion is used according to determination before by temperature T, humidity RH, the ventilation rate N in set environment cabin
The quantity of separate tube 3, the container protective cover 7 that distributes that remote control environmental chamber internal standard distributes sample is opened, and control distributes cover 5
The quantity of unlatching/closing.
(6), after certain time (at least 24 hours), test terminates, and remote control environmental chamber internal standard distributes dissipating for sample
Hair net 5 closes, distributes the closing of container protective cover 7, and standard distribution sample is taken out, its quality m is weighed0。
(7), according to the volume V of environmental chamber, temperature T, humidity RH, ventilation rate N, target liq in t moment environmental chamber is tested
Dispensing intensity c, calculates the rate of recovery of the environmental chamber to target liq, and calculation formula is as follows：
Further, the above-mentioned standard distribution sample for the test environment cabin rate of recovery that embodiment provides according to the present invention
And the method for the above-mentioned test environment cabin rate of recovery, the embodiment of the present invention will also enumerate the testing standard in environmental chamber and distribute sample
How the concentration that environmental chamber in forms gaseous target liq is effectively tested during burst size, it is as follows：
Two identical standard distribution samples are enumerated in embodiments of the present invention, and it is molten to be injected separately into 3g n-undecane standards
Liquid selects two identical environmental chambers, such as：Selection volume is 60L, two, the satisfactory dynamic environment cabin of background, setting
The temperature of environmental chamber is 23 DEG C, humidity 50%RH, and ventilation rate is 1 time/h.During the test for the two identical marks
Standard distributes sample, and remote control unlatching is identical to distribute 5 number of cover (determining that 3 quantity of diffuser used is identical), pre-
Set the time cycle (such as when at 3,5,16 when, 19 when, 24 when) respectively in monitoring of environmental cabin n-undecane concentration.After for 24 hours
N-undecane concentration and stop testing, n-undecane concentration in two environmental chambers that this process monitors in test environment cabin
It changes with time as shown in fig. 6, being detected in first environment cabin during toluene emission of liquid in testing standard distributes sample
The curve 2# of toluene concentration in the curve 1# of toluene concentration, second environment cabin, the first environment cabin and second environment cabin are as above
The identical environmental chamber of statement shows that the standard distribution sample is sustainable, steadily offer centainly distributes according to curve 1#, 2#
The n-undecane gas of rate.
In conclusion the standard distribution sample and test side provided in an embodiment of the present invention for the test environment cabin rate of recovery
Method, by the way that standard distribution sample to be put into environmental chamber, to test in the standard distribution sample, target liq volatilization is corresponding to be released
High-volume, while the number of cover can also be distributed by controlling to adjust unlatching/closing, with reach rapidly adjustment target liq in ring
Emission rate in the cabin of border, optimal inspection process, after completing test assignment, burst size and the front and back mark of test that test is obtained
The quality difference value that standard distributes sample is compared, to obtain percentages, that is, the corresponding rate of recovery of the environmental chamber, in turn
The rate of recovery of environmental chamber is evaluated using standard distribution sample realization, further, is released when in the pollutant for carrying out product
Before high-volume testing, standard distribution sample provided by the invention can be utilized and evaluate the evaluation method of the environmental chamber rate of recovery, in advance
First the rate of recovery of the environmental chamber of pending test assignment is evaluated, whether the rate of recovery to judge the environmental chamber is up to standard, with
If just the environmental chamber not up to standard that can also be replaced in time and select the rate of recovery up to standard carries out test assignment.The embodiment of the present invention is excellent
The unified standard for changing the test environment cabin rate of recovery can in advance carry out the rate of recovery of environmental chamber effective using standard distribution sample
Evaluation ensures to survey to ensure that the environmental chamber for selecting the rate of recovery up to standard during test product pollutant burst size completes test
The accuracy of test result.The standard distribution sample makes simple, convenient simultaneously, thus is more prone to expanded and more contributes to
The Complicated Flow for simplifying the existing test rate of recovery, greatly improves testing efficiency.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited to this, any ripe
It knows those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, should all cover
Within protection scope of the present invention, therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of standard distribution sample for the test environment cabin rate of recovery, which is characterized in that including：
Container is distributed, for holding target liq；The upper port for distributing container is there are multiple, with the upper port size
Lid is distributed with being equipped with, described distribute covers equipped with multiple perforation；It is inserted into diffuser by the perforation, under the diffuser
Port is inserted into the liquid level of the target liq or less；Sealing bolt is equipped at the perforation, for fixing the diffuser
The depth in container is distributed described in insertion and seals the gap between the diffuser and the perforation；It is covered in described distribute
Side, which is equipped with, distributes cover, and gasket, the gasket number and the diffuser number phase are equipped in the cover inner surface that distributes
The upper port of the diffuser is blocked when together, for distributing cover described in the closing.
2. standard distribution sample according to claim 1, which is characterized in that the container that distributes includes multiple containers chamber,
It is mutually isolated between the multiple container chamber.
3. standard distribution sample according to claim 1, which is characterized in that the standard distribution sample further includes：
Container protective cover is distributed, is matched with the size for distributing container, described container is distributed for covering.
4. standard distribution sample according to claim 1 or 3, which is characterized in that the standard distribution sample further includes：
Electromagnetic assembly, for receiving remote controller signal, is controlled mounted on the bottom for distributing container by the electromagnetic assembly
It opens/closes and described distribute cover or described distribute container protective cover.
5. standard distribution sample according to claim 1, which is characterized in that the target liq is volatile organic compound
Thing liquid body or semi-volatile organic compounds liquid.
6. the test method of a kind of test environment cabin rate of recovery, for being used to test as described in any one of claim 1 to 5
The standard distribution sample of the environmental chamber rate of recovery, which is characterized in that including：
The quality for weighing the standard distribution sample for holding target liq, obtains the first numerical value, the standard distribution sample is put into
In environmental chamber, wherein the target liq is volatile organic compounds liquid or semi-volatile organic compounds liquid；
The performance parameter of the environmental chamber is set according to prerequisite, the standard distribution sample is put into the environmental chamber,
The control unlatching standard distribution sample distributes cover, in testing the target liq volatilization process, according to preset time week
Phase records target liq described in the environmental chamber internal cause and distributes corresponding gaseous state concentration values；
When the test target liq volatilization process finishes, the cover that distributes of the standard distribution sample is closed in control, takes out institute
It states standard distribution sample and weighs the quality of the standard distribution sample, obtain second value；
According to the difference of first numerical value and the second value, obtain the standard distribution sample being put into the environment
With from the corresponding mass difference after environmental chamber taking-up before cabin, it is labeled as third value；
According to target liq described in the performance parameter of the environmental chamber of the setting and the environmental chamber internal cause of the record
Corresponding concentration values are distributed, the standard distribution sample is calculated and volatilizees in the environmental chamber internal cause target liq and corresponded to
The numerical value of burst size is labeled as the 4th numerical value；
The percentages for calculating the 4th numerical value and the third value obtain the corresponding rate of recovery of the environmental chamber.
7. according to the method described in claim 6, it is characterized in that, the performance that the environmental chamber is arranged according to prerequisite
Parameter, including：
Adjust temperature, humidity, ventilation rate in the environmental chamber.
8. according to the method described in claim 6, it is characterized in that, when distributing container bottom and being equipped with electromagnetic assembly, lead to
It crosses the electromagnetic assembly control and distributes cover unlatching/closing, the method further includes：
Control signal is sent to the electromagnetic assembly that container bottom is installed that distributes of the standard distribution sample, in the environmental chamber
Unlatching/closing that control in the target liq volatilization process distributes cover is tested, to adjust the target liq in the environment
Emission rate in cabin.
9. according to the method described in claim 6, it is characterized in that, when distributing container bottom and being equipped with electromagnetic assembly, lead to
It crosses the electromagnetic assembly control and distributes cover unlatching/closing, the method further includes：
When the multiple containers intracavitary for distributing container injects different target liqs, by distributing cover unlatching/pass described in control
It closes, to test different target emission of liquid to the corresponding gas concentration value of the environmental chamber simultaneously.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110320326A (en) * | 2019-05-31 | 2019-10-11 | 吉林省农业科学院 | The measuring method of gas reclaiming rate in respiratory metabolism cabin |
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