CN108776054B - Standard emission sample for testing environmental chamber recovery rate and testing method - Google Patents
Standard emission sample for testing environmental chamber recovery rate and testing method Download PDFInfo
- Publication number
- CN108776054B CN108776054B CN201810637323.XA CN201810637323A CN108776054B CN 108776054 B CN108776054 B CN 108776054B CN 201810637323 A CN201810637323 A CN 201810637323A CN 108776054 B CN108776054 B CN 108776054B
- Authority
- CN
- China
- Prior art keywords
- emission
- diffusion
- container
- cover
- standard
- 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
Images
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a standard emission sample for testing the recovery rate of an environment cabin and a testing method, relates to the technical field of environmental protection detection, and can effectively evaluate the recovery rate of the environment cabin in time. A standard emission sample for testing environmental compartment recovery, comprising: a dispensing container for holding a target liquid; a plurality of upper ports of the diffusion container are provided, the diffusion cover is arranged on the diffusion container in a size matched with the upper ports, and a plurality of through holes are formed in the diffusion cover; inserting a diffusion pipe through the through hole, wherein the lower port of the diffusion pipe is inserted below the liquid level of the target liquid; the sealing bolt is arranged at the perforation and used for fixing the depth of the diffusion tube inserted into the diffusion container and sealing the gap between the diffusion tube and the perforation; the upper part of the diffusion cover is provided with a diffusion cover, the inner surface of the diffusion cover is provided with a sealing gasket, and the number of the sealing gaskets is the same as that of the diffusion pipes, and the sealing gaskets are used for sealing the upper ports of the diffusion pipes when the diffusion cover is closed. The invention is mainly used for testing the recovery rate of the environmental chamber.
Description
Technical Field
The invention relates to the technical field of environmental protection detection, in particular to a standard emission sample for testing the recovery rate of an environmental chamber and a testing method.
Background
With the improvement of living standard of people, a large amount of artificial boards, adhesives, wallpaper, coatings, paints, carpets and other building material products and various furniture are used in the process of home decoration, and the action causes more and more indoor air pollution. In recent years, the concern of the nation and the common people on living and living environments is higher and higher, and a pollutant release amount control system based on a dynamic environment cabin is actively popularized in various fields such as artificial boards, coatings, carpets, adhesives, furniture, composite wood products and the like. For example, GB 18580-.
At present, in the process of testing the pollutant release amount of building materials and furniture products by using a dynamic cabin method, the comprehensive performance indexes such as the background, the recovery rate and the like of an environmental cabin are particularly important. The pollutant background of the environmental chamber can be evaluated through a simple gas production test process, but the evaluation of the recovery rate needs corresponding standard emission substances. At present, the standard emission samples reported in domestic and foreign documents mainly comprise: the construction material product slice, the standard gas and the tubular liquid-membrane structure standard emission source are three, but the corresponding standard emission substance is difficult to purchase in the current market, so that the related standard emission substance is lacked in the market, and the unified evaluation on the pollutant recovery rate of the environmental chamber is difficult to realize all the time. Therefore, the situation that the test result of the release amount of the pollutants is low due to low recovery rate of the environmental chamber is easy to occur in the process of testing the release amount of the pollutants of the product, and the accuracy of the release amount of the pollutants of the product tested by utilizing the environmental chamber is greatly reduced.
Disclosure of Invention
In view of the above, the invention provides a standard emission sample for testing the recovery rate of an environmental chamber and a testing method thereof, and mainly aims to optimize the unified standard of the recovery rate of the environmental chamber, so that the intelligent degree of the testing process is greatly improved and the testing efficiency is improved while the recovery rate of the environmental chamber can be effectively evaluated in time by using the standard emission sample.
In order to achieve the above purpose, the present invention mainly provides the following technical solutions:
in one aspect, the present invention provides a standard emission sample for testing environmental chamber recovery, comprising:
a dispensing container for holding a target liquid; a plurality of upper ports of the diffusion container are provided, a diffusion cover is arranged on the diffusion container in a size matched with the upper ports, and a plurality of through holes are formed in the diffusion cover; inserting a diffusion pipe through the through hole, wherein the lower port of the diffusion pipe is inserted below the liquid level of the target liquid; a sealing bolt is arranged at the perforation and is used for fixing the depth of the diffusion pipe inserted into the diffusion container and sealing the gap between the diffusion pipe and the perforation; the upper side of the diffusion cover is provided with a diffusion cover, the inner surface of the diffusion cover is provided with a sealing gasket, and the number of the sealing gaskets is equal to that of the diffusion pipes, and the sealing gaskets are used for sealing the upper ports of the diffusion pipes when the diffusion cover is closed.
Optionally, the emission container comprises a plurality of container cavities, and the container cavities are isolated from each other.
Optionally, the standard emission sample further comprises:
an emission container protection cover matched with the size of the emission container and used for covering the emission container.
Optionally, the standard emission sample further comprises:
and the electromagnetic assembly is arranged at the bottom of the emission container and used for receiving a remote controller signal, and the electromagnetic assembly controls the emission cover or the emission container protection cover to be opened/closed.
Optionally, the target liquid is a volatile organic compound liquid or a semi-volatile organic compound liquid.
In another aspect, the present invention also provides a method for testing environmental chamber recovery rate, which is used for the standard emission sample for testing environmental chamber recovery rate, and comprises the following steps:
weighing the mass of a standard emission sample containing target liquid to obtain a first numerical value, and putting the standard emission sample into an environment cabin, wherein the target liquid is volatile organic compound liquid or semi-volatile organic compound liquid;
setting performance parameters of the environment cabin according to preset conditions, placing the standard emission sample into the environment cabin, controlling to open an emission cover of the standard emission sample, and recording a gas concentration value corresponding to emission of the target liquid in the environment cabin according to a preset time period in the process of testing volatilization of the target liquid;
when the volatilization process of the target liquid is tested, controlling to close the emission cover of the standard emission sample, taking out the standard emission sample and weighing the mass of the standard emission sample to obtain a second numerical value;
according to the difference value between the first value and the second value, obtaining the corresponding quality difference value between the standard emission sample before being placed in the environment cabin and the standard emission sample after being taken out of the environment cabin, and marking the difference value as a third value;
according to the set performance parameters of the environment cabin and the recorded gas concentration value corresponding to the target liquid emission in the environment cabin, calculating a value of the corresponding emission amount of the standard emission sample in the environment cabin due to the target liquid volatilization, and marking the value as a fourth value;
and calculating the percentage value of the fourth numerical value and the third numerical value to obtain the recovery rate corresponding to the environmental chamber.
Optionally, the setting of the performance parameter of the environmental chamber according to the preset condition includes:
and adjusting the temperature, the humidity and the ventilation rate in the environmental chamber.
Optionally, when an electromagnetic assembly is installed at the bottom of the emission container, the emission cover is controlled to be opened/closed by the electromagnetic assembly, and the method further includes:
and sending a control signal to an electromagnetic assembly arranged at the bottom of the standard emission container for emitting the sample, and testing the opening/closing of an emission cover in the volatilization process of the target liquid in the environment chamber so as to adjust the emission rate of the target liquid in the environment chamber.
Optionally, when an electromagnetic assembly is installed at the bottom of the emission container, the emission cover is controlled to be opened/closed by the electromagnetic assembly, and the method further includes:
when different target liquids are injected into a plurality of container cavities of the emission container, the emission cover is controlled to be opened/closed, so that the gas concentration values corresponding to the emission of the different target liquids to the environmental chamber can be tested simultaneously.
By the technical scheme, the technical scheme provided by the invention at least has the following advantages:
the invention provides a standard emission sample for testing the recovery rate of an environmental chamber and a testing method thereof. When the device structure is needed to be utilized to test the recovery rate of the environmental chamber, the emission container is used for containing target liquid, and accordingly, the standard emission sample for testing the recovery rate of the environmental chamber can be simply and conveniently manufactured. The testing method of the invention is that a standard emission sample is put into an environment chamber to test the release amount corresponding to the volatilization of the target liquid in the standard emission sample, and simultaneously, the number of the emission covers can be controlled and adjusted to quickly adjust the emission rate of the target liquid in the environment chamber and optimize the testing process, after the testing task is completed, the release amount obtained by the test is compared with the quality difference value of the standard emission sample before and after the test to obtain the percentage value, namely the recovery rate corresponding to the environment chamber, and then the recovery rate of the environment chamber is evaluated by using the standard emission sample, further, before the pollutant release amount test of the product is carried out, the recovery rate of the environment chamber to be carried out with the standard emission sample and the evaluation method for evaluating the recovery rate of the environment chamber provided by the invention can be used for evaluating the recovery rate of the environment chamber to be carried out with the testing task in advance, so as to judge whether the recovery rate of the environmental chamber reaches the standard or not, so that if the recovery rate does not reach the standard, the environmental chamber with the recovery rate reaching the standard can be replaced in time and selected for carrying out a test task. Compared with the prior art, the problem that the accuracy of the pollutant release amount of the product tested by using the environmental chamber is greatly reduced due to the fact that the lower recovery rate of the environmental chamber leads to the lower result of the pollutant release amount test is easily caused in the pollutant release amount test process of the product. The invention optimizes the unified standard of the recovery rate of the test environment chamber, and can effectively evaluate the recovery rate of the environment chamber in advance by using the standard emission sample so as to ensure that the environment chamber with the recovery rate reaching the standard is selected to complete the test in the process of testing the pollutant release amount of the product and ensure the accuracy of the test result. Meanwhile, the standard emission sample is simple and convenient to manufacture, so that the standard emission sample is easier to popularize, the existing complex flow of testing the recovery rate is more facilitated to be simplified, and the testing efficiency is greatly improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram illustrating a standard emission sample for testing environmental chamber recovery according to an embodiment of the present invention;
FIG. 2 illustrates a top view of a standard emission sample emission cover provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the structure of a standard sample diffusion tube inserted into an emission cap according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another standard emission sample for testing environmental chamber recovery according to an embodiment of the present invention;
FIG. 5 is a flow chart of a method for evaluating environmental chamber recovery provided by an embodiment of the invention;
FIG. 6 is a graphical representation of the detection of n-undecane concentration in an environmental chamber during the emission of n-undecane liquid from a test standard emission sample, provided by an embodiment of the present invention.
Reference numerals:
1. an emanator container; 2. an emanation cap; 21. perforating; 3. a diffuser tube; 4. a seal bolt; 5. a hair-dispersing cover; 6. a gasket; 7. a dispensing container protective cover; 8. an electromagnetic assembly; 9. a container cavity.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a standard emission sample for testing environmental chamber recovery rate, comprising: a dispensing container 1 for containing a target liquid; a plurality of upper ports of the emission container 1 are provided, the emission cover 2 is arranged on the emission container in a size matched with the upper ports, and a plurality of through holes 21 are arranged on the emission cover 2; inserting a diffusion tube 3 through the perforation 21, wherein the lower port of the diffusion tube 3 is inserted below the liquid level of the target liquid; a sealing bolt 4 is arranged at the perforation 21 and used for fixing the depth of the diffusion pipe 3 inserted into the diffusion container 1 and sealing the gap between the diffusion pipe 3 and the perforation 21; the upper part of the dispersing cover 2 is provided with a dispersing cover 5, the inner surface of the dispersing cover 5 is provided with a sealing gasket 6, and the number of the sealing gasket 6 is the same as that of the diffusion tubes 3, and the sealing gasket is used for sealing the upper ports of the diffusion tubes 3 when the dispersing cover 5 is closed.
The embodiment of the invention specifically illustrates the standard emission sample for evaluating the recovery rate of the environmental chamber, which is provided by the embodiment of the invention, through an implementation process and a principle, and specifically comprises the following steps:
in the embodiment of the present invention, a plurality of upper ports are preset on the upper surface of the emission container 1, and for each upper port to match the size of the corresponding emission cap 2, the emission cap 2 is provided with a through hole 21 for inserting the diffusion tube 3 to communicate the inside with the outside of the emission container 1, and the depth of inserting the diffusion tube 3 into the emission container 1 is fixed by a sealing bolt 4, and the sealing bolt 4 can also be used to seal the gap between the diffuser pipe 3 and the through hole 21, in order to avoid that the gaseous product is not totally emitted from the diffusion tube 3 into the environmental chamber when the emission quantity of the gaseous product in the emission container 1 due to the volatilization of the target liquid is tested, but is partially emitted from the through-hole 21 into the environmental chamber, which, if present, would cause a problem of not being able to accurately control the emission rate of the target liquid, and also affect the gas-liquid equilibrium in the emission container 1. Each emission cover 2 is provided with an emission cover 5, the inner surface of the emission cover 5 is provided with a sealing gasket 6, the number of the sealing gaskets 6 is the same as that of the diffusion pipes 3 inserted on the emission cover 2 under the emission cover 5, so that when the emission cover 5 is closed, the sealing gaskets 6 on the inner surface of the emission cover 5 can properly block the upper ports of the diffusion pipes 2, and the gaseous substances for preventing the volatilization of the target liquid at this time are emitted to the environment chamber through the diffusion pipes 3.
The emission container 1 can be made of stainless steel, glass, or polytetrafluoroethylene, which can resist corrosion of volatile organic compounds or semi-volatile organic compounds, and is used for containing target liquid, and the recovery rate of the test environment chamber is indirectly realized by testing the emission data of the target liquid in the environment chamber. Similarly, the diffusion pipe 3 is also made of a material having high corrosion resistance. When preparing to begin the test task of test environment cabin rate of recovery, open and distribute cover 5, distribute lid 2, through distributing one or more up end mouth position department in the container 1, to distributing injecting target liquid in the container 1, liquid injection finishes the back, will distribute lid 2 and distribute container 1 up end mouth lock, at the in-process of lock, adjustment sealing bolt 4, insert below the liquid level of target liquid with the lower port of diffusion tube 3 in order to ensure, diffusion tube 3 down end mouth department forms the intercommunication with target liquid this moment, in order to be favorable to distributing to the environment under-deck through diffusion tube 3 with the gaseous product that volatilizees when target liquid volatilizees. For example: the target liquid in the emission container 1 may include, but is not limited to, more than 2/3, and it is necessary to ensure that the liquid level is spaced from the upper end of the emission container 1 by a predetermined distance to facilitate the formation of stable gas-liquid equilibrium, while the lower end of the diffusion tube 3 is immersed below the liquid level and spaced from the bottom of the emission container 1 by a predetermined distance to facilitate the liquid level equilibrium inside and outside the diffusion tube 3.
Further, when the number of the emission caps 2 is plural in the standard emission sample, it is possible to easily and quickly adjust the emission rate of the target liquid in the standard emission sample by adjusting the number of the opening/closing emission caps 5.
Further, correspondingly, the number of the through holes 21 on the emission cover 2 can be adjusted to adjust the number of the diffusion pipes 3 which can be inserted into each emission cover 2, and then under the condition that the number of the emission covers 2 is set, the emission rate of the target liquid can be quickly adjusted by opening the emission cover 5, and meanwhile, if the number of the diffusion pipes 3 which are inserted into one emission cover 2 is more, correspondingly, the influence on the emission rate of the target liquid is more obvious by opening one emission cover 5.
The standard emission sample for testing the recovery rate of the environmental chamber provided by the embodiment of the invention is placed in the environmental chamber, the target liquid contained in the emission container 1 is volatilized according to preset environmental chamber performance parameters, such as temperature, humidity, ventilation rate and the like, and is emitted into the environmental chamber through the diffusion pipe 3, and then within a specified time, at least more than 24 hours are carried out, during which the concentration change value of the gaseous substance generated in the environmental chamber due to the emission of the target liquid can be tested, when the standard emission sample is taken out from the environmental chamber, the release amount corresponding to the volatilization of the target liquid measured within the specified time can be obtained according to the preset environmental chamber performance parameters and the concentration change value recorded within the specified time, wherein the release amount obtained in the embodiment of the invention is important data for evaluating the recovery rate of the environmental chamber, the method is used for simply and quickly evaluating the recovery rate of the environmental chamber effectively and accurately.
The invention provides a standard emission sample for testing the recovery rate of an environmental chamber and a testing method thereof. When the device structure is needed to be utilized to test the recovery rate of the environmental chamber, the emission container is used for containing target liquid, and accordingly, the standard emission sample for testing the recovery rate of the environmental chamber can be simply and conveniently manufactured. The standard emission sample provided by the embodiment of the invention mainly aims to optimize the unified standard of the recovery rate of the test environment chamber, and the recovery rate of the environment chamber can be effectively evaluated in advance by using the standard emission sample, so that the environment chamber with the recovery rate reaching the standard is selected to complete the test in the process of testing the pollutant release amount of a product, and the accuracy of a test result is ensured. Meanwhile, the standard emission sample is simple and convenient to manufacture, so that the standard emission sample is easier to popularize, the existing complex flow of testing the recovery rate is more facilitated to be simplified, and the testing efficiency is greatly improved.
The invention is described in further detail below with reference to the following figures and examples, as follows:
further, the inside of the emission container 1 is partitioned into a plurality of container chambers 9 for containing different target liquids in the container chambers 9, and each container cavity is provided with an upper port, a diffusion cover 2 is arranged on the upper port in a size matching with the upper port, a perforation 21 is arranged on the diffusion cover 2, the diffusion pipe 3 is inserted into the container cavity 9 through the perforation 21, and the lower port of the diffusion pipe 3 is kept to be immersed below the target liquid level, therefore, in the process of releasing pollutants from the target liquid in the test environment chamber, different target liquids can be contained in different container cavities 9 of the standard sample-emitting container 1, and simultaneously testing a plurality of target liquids to obtain test result data corresponding to a plurality of different target liquids, and using the plurality of test result data, the method can be used for conveniently correcting the environmental chamber recovery rate obtained by calculation, and the accuracy of the method for testing the environmental chamber recovery rate is improved.
Further, according to the size of the emission container 1, an emission container protection cover 7 is mounted for protecting the emission cover 5, the diffusion pipe 3 and other components, for example, in the process that an experimenter moves a standard emission sample, the diffusion pipe 3 is prevented from being touched or impacted. Further, before putting into the environment cabin or when taking out it from the environment cabin with the standard sample that gives off, utilize to give off container safety cover 7 and realize multiple protection, avoid having the pollutant that target liquid gives off to discharge to the air in, avoid experimental data inaccurate then, also help the protection experimenter to inhale the gaseous state material that diffusion tube 3 department gived off at the during operation simultaneously to reduce the injury that causes the human body.
Furthermore, an electromagnetic component 8 can be installed at the bottom of the emission container body 1 for receiving the signal of the remote controller, and the electromagnetic component 8 can be used for realizing the remote control to open/close the emission cover 5 or the emission container protective cover 7, so that the operation of manually opening/closing the emission cover 5 or the emission container protective cover 7 by an experimenter can be replaced by intelligent remote control, the gaseous substances which are emitted in the process can be prevented from being inhaled and causing damage to the human body, meanwhile, according to the remote control function, the emission cover 5 can be remotely opened/closed in the process of testing the volatilization of the target liquid, the number of the diffusion pipes 3 used for emitting the gaseous substances can be adjusted, the emission rate of the target liquid in the test process can be indirectly adjusted, and therefore, the emission rate of the target liquid in the standard emission sample can be remotely controlled at any time in the embodiment of the invention, therefore, the test process is simpler and more flexible, and the accuracy and comprehensiveness of the final test result are improved.
Further, the target liquid in the embodiment of the present invention may be a volatile organic compound liquid or a semi-volatile organic compound liquid, such as a solution of toluene, n-undecane, and the like, and it should be noted that when the volatile organic compound liquid is used for testing, the test effect data is better.
As shown in fig. 5, an embodiment of the present invention further provides a method for testing environmental chamber recovery rate, which is used for testing the standard emission sample of environmental chamber recovery rate as stated above, and the method comprises:
The target liquid may be a volatile organic compound liquid or a semi-volatile organic compound liquid, such as a solution of toluene, n-undecane, or the like, and it should be noted that when the volatile organic compound liquid is used for testing, the test effect data is better.
102, setting performance parameters of the environment cabin according to preset conditions, placing a standard emission sample into the environment cabin, controlling to open the emission cover of the standard emission sample in the process of testing the volatilization of the target liquid, and recording a gas concentration value corresponding to the emission of the target liquid in the environment cabin according to a preset time period.
Wherein, the performance parameters of the environment cabin are set according to preset conditions, which comprises the following steps: and adjusting the temperature, the humidity and the ventilation rate in the environmental chamber.
And 103, controlling to close the emission cover of the standard emission sample when the volatilization process of the tested target liquid is finished, taking out the standard emission sample, and weighing the quality of the standard emission sample to obtain a second numerical value.
And 104, obtaining a corresponding quality difference value between the standard emission sample before being placed in the environment cabin and the standard emission sample after being taken out of the environment cabin according to the difference value between the first value and the second value, and marking the difference value as a third value.
And 105, calculating a value of a corresponding release amount of the standard emission sample in the environment cabin due to the volatilization of the target liquid according to the set performance parameters of the environment cabin and the recorded gas concentration value corresponding to the emission of the target liquid in the environment cabin, and marking the value as a fourth value.
And 106, calculating the percentage value of the fourth numerical value and the third numerical value to obtain the recovery rate corresponding to the environmental chamber.
Further, when the electromagnetic assembly 8 is installed at the bottom of the emission container 1, when the emission cover is controlled to be opened/closed by the electromagnetic assembly 8, a control signal is sent to the electromagnetic assembly 8 installed at the bottom of the emission container 1 for standard emission samples, and the emission cover 5 is controlled to be opened/closed in the process of testing the volatilization of the target liquid in the environment chamber, so as to adjust the emission rate of the target liquid in the environment chamber.
Further, when the electromagnetic assembly 8 is installed at the bottom of the emission container 1, the emission cover is controlled to be opened/closed through the electromagnetic assembly 8, and when different target liquids are injected into the plurality of container cavities 9 of the emission container 1, the emission cover 5 is controlled to be opened/closed, so that the gas concentration values corresponding to the emission of the different target liquids to the environmental chamber can be tested simultaneously.
According to the standard emission sample for testing the environmental chamber recovery rate and the method for testing the environmental chamber recovery rate provided by the embodiment of the invention, the embodiment of the invention also exemplifies specific implementation methods to further describe the standard emission sample and the testing method in detail, and the steps are as follows:
(1) first, the number of emission caps 2, the number of perforations 21, and the number of inserted diffusion tubes 3 may be preset for different emission rate requirements of the target liquid, so as to indirectly adjust the emission rate of the target liquid by controlling the opening/closing of the emission cap 5.
(2) Injecting a certain amount of target liquid, namely volatile organic compound, such as n-undecane solution into the emission container 1, so that the lower port of the diffusion tube 3 is immersed into the target liquid, a certain gap is left between the liquid level and the upper port of the emission container body 1, closing the emission cover 5, covering the emission container protective cover 7, and putting the standard emission sample into the environmental chamber.
(3) Testing the concentration of the background volatile organic compounds in the environmental chamber, and enabling the concentration of the single target volatile organic compound to be lower than 2 mu g/m by cleaning or high-temperature catalysis and the like3. In this case, it is ensured that the background concentration of the environmental chamber does not have an adverse effect on the final test result.
(4) The mass of the standard emission sample is weighed and recorded as m1。
(5) The temperature T, the humidity RH and the ventilation rate N of the environment cabin are set, after the operation is stable, the number of the used diffusion tubes 3 is determined, the emission container protection cover 7 of the standard emission sample in the environment cabin is controlled to be opened in a remote mode, and the number of the emission cover 5 to be opened/closed is controlled.
(6) After a certain time (at least 24 hours), the test is finished, the emission cover 5 of the standard emission sample in the remote control environment cabin is closed, the emission container protective cover 7 is closed, the standard emission sample is taken out, and the quality of the standard emission sample is weighedQuantity m0。
(7) According to the volume V, the temperature T, the humidity RH and the ventilation rate N of the environment chamber, testing the emission concentration c of the target liquid in the environment chamber at the moment T, and calculating the recovery rate of the target liquid by the environment chamber, wherein the calculation formula is as follows:
further, according to the above standard emission sample for testing the recovery rate of the environmental chamber and the above method for testing the recovery rate of the environmental chamber provided in the embodiments of the present invention, the embodiments of the present invention will further exemplify how to effectively test the concentration of the target liquid forming a gaseous state in the environmental chamber during the process of testing the emission amount of the standard emission sample in the environmental chamber, as follows:
in the present example, two identical standard emission samples were exemplified and 3g of n-undecane standard solution was injected separately, using two identical environmental chambers, such as: two dynamic environment chambers with the volume of 60L and the background meeting the requirements are selected, the temperature of the environment chamber is set to be 23 ℃, the humidity is set to be 50% RH, and the ventilation rate is set to be 1 time/h. During the test, the same number of dispensing caps 5 (i.e., the same number of diffusion tubes 3 were determined to be used) were turned on by the remote control for the same two standard dispensing samples, and the concentration of n-undecane in the environmental chamber was monitored for a predetermined period of time (e.g., at 3 hours, 5 hours, 16 hours, 19 hours, and 24 hours). The concentration of n-undecane in the environmental chamber is tested after 24h and the experiment is stopped, the change of the concentration of n-undecane in the two environmental chambers monitored in the process with time is shown in fig. 6, a curve 1# of the concentration of toluene in the first environmental chamber and a curve 2# of the concentration of toluene in the second environmental chamber are detected in the process of the emission of toluene liquid in the test standard emission sample, the first environmental chamber and the second environmental chamber are the same environmental chambers as stated above, and the standard emission sample is shown to be n-undecane gas which can continuously and stably provide a certain emission rate according to the curves 1# and 2 #.
In summary, the standard emission sample and the test method for testing the recovery rate of the environmental chamber provided by the embodiment of the present invention are used to test the release amount corresponding to the volatilization of the target liquid in the standard emission sample by placing the standard emission sample in the environmental chamber, and at the same time, the number of the emission covers which are turned on/off can be controlled and adjusted to quickly adjust the emission rate of the target liquid in the environmental chamber, so as to optimize the test process, after the test task is completed, the release amount obtained by the test is compared with the mass difference of the standard emission sample before and after the test to obtain the percentage value, that is, the recovery rate corresponding to the environmental chamber, so as to evaluate the recovery rate of the environmental chamber by using the standard emission sample, and further, before the pollutant release amount test of the product is performed, the standard emission sample and the evaluation method for evaluating the recovery rate of the environmental chamber provided by the present invention can be used, and evaluating the recovery rate of the environment cabin to be subjected to the test task in advance to judge whether the recovery rate of the environment cabin reaches the standard or not, so that if the recovery rate does not reach the standard, the environment cabin with the recovery rate reaching the standard can be replaced in time and the test task is carried out. The embodiment of the invention optimizes the unified standard of the recovery rate of the test environment chamber, and can effectively evaluate the recovery rate of the environment chamber in advance by using the standard emission sample so as to ensure that the environment chamber with the recovery rate reaching the standard is selected to complete the test in the process of testing the pollutant emission amount of the product and ensure the accuracy of the test result. Meanwhile, the standard emission sample is simple and convenient to manufacture, so that the standard emission sample is easier to popularize, the existing complex flow of testing the recovery rate is more facilitated to be simplified, and the testing efficiency is greatly improved.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be subject to the protection scope of the appended claims.
Claims (7)
1. A standard emission sample for testing environmental chamber recovery, comprising:
a dispensing container for holding a target liquid; a plurality of upper ports of the diffusion container are provided, a diffusion cover is arranged on the diffusion container in a size matched with the upper ports, and a plurality of through holes are formed in the diffusion cover; inserting a diffusion pipe through the through hole, wherein the lower port of the diffusion pipe is inserted below the liquid level of the target liquid; a sealing bolt is arranged at the perforation and is used for fixing the depth of the diffusion pipe inserted into the diffusion container and sealing the gap between the diffusion pipe and the perforation; a diffusion cover is arranged above the diffusion cover, sealing gaskets are arranged on the inner surface of the diffusion cover, the number of the sealing gaskets is the same as that of the diffusion pipes, and the sealing gaskets are used for sealing the upper ports of the diffusion pipes when the diffusion cover is closed;
the electromagnetic assembly is installed the bottom of the emission container for receiving remote controller signals, through electromagnetic assembly control is opened/closed the emission cover perhaps the emission container safety cover for utilize the operation of intelligent remote control replacement experimenter manual opening/closing the emission cover or emitting the container safety cover, adjust simultaneously the standard emits the rate of emitting of target liquid in the sample.
2. The standard emission sample of claim 1, wherein the emission container comprises a plurality of container cavities isolated from each other.
3. The standard emission sample of claim 1, further comprising:
an emission container protection cover matched with the size of the emission container and used for covering the emission container.
4. The standard emission sample of claim 1, wherein the target liquid is a volatile organic compound liquid or a semi-volatile organic compound liquid.
5. A test method for testing environmental compartment recovery rate, which is used for the standard emission sample for testing environmental compartment recovery rate according to any one of claims 1 to 4, and comprises the following steps:
weighing the mass of a standard emission sample containing target liquid to obtain a first numerical value, and putting the standard emission sample into an environment cabin, wherein the target liquid is volatile organic compound liquid or semi-volatile organic compound liquid;
setting performance parameters of the environment cabin according to preset conditions, placing the standard emission sample into the environment cabin, controlling to open an emission cover of the standard emission sample, and recording a gas concentration value corresponding to emission of the target liquid in the environment cabin according to a preset time period in the process of testing volatilization of the target liquid;
when the volatilization process of the target liquid is tested, controlling to close the emission cover of the standard emission sample, taking out the standard emission sample and weighing the mass of the standard emission sample to obtain a second numerical value;
according to the difference value between the first value and the second value, obtaining the corresponding quality difference value between the standard emission sample before being placed in the environment cabin and the standard emission sample after being taken out of the environment cabin, and marking the difference value as a third value;
according to the set performance parameters of the environment cabin and the recorded concentration value corresponding to the target liquid emission in the environment cabin, calculating a value of a corresponding emission amount obtained by the standard emission sample due to the target liquid volatilization in the environment cabin, and marking the value as a fourth value;
calculating the percentage value of the fourth numerical value and the third numerical value to obtain the recovery rate corresponding to the environmental chamber;
controlling the emission cover to be opened/closed by an electromagnetic assembly when the electromagnetic assembly is installed at the bottom of the emission container, the method further comprising:
and sending a control signal to an electromagnetic assembly arranged at the bottom of the emission container for the standard emission sample, and testing in the environment cabin to control the opening/closing of the emission cover in the volatilization process of the target liquid so as to adjust the emission rate of the target liquid in the environment cabin, and simultaneously replacing the operation of manually opening/closing the emission cover or the emission container protective cover by experimenters by utilizing intelligent remote control.
6. The method of claim 5, wherein said setting performance parameters of said environmental chamber according to preset conditions comprises:
and adjusting the temperature, the humidity and the ventilation rate in the environmental chamber.
7. The method of claim 5, wherein the emission cover is controlled to open/close by an electromagnetic assembly when the electromagnetic assembly is mounted at the bottom of the emission container, the method further comprising:
when different target liquids are injected into a plurality of container cavities of the emission container, the emission cover is controlled to be opened/closed, so that the gas concentration values corresponding to the emission of the different target liquids to the environmental chamber can be tested simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637323.XA CN108776054B (en) | 2018-06-20 | 2018-06-20 | Standard emission sample for testing environmental chamber recovery rate and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810637323.XA CN108776054B (en) | 2018-06-20 | 2018-06-20 | Standard emission sample for testing environmental chamber recovery rate and testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108776054A CN108776054A (en) | 2018-11-09 |
| CN108776054B true CN108776054B (en) | 2021-01-15 |
Family
ID=64025265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810637323.XA Active CN108776054B (en) | 2018-06-20 | 2018-06-20 | Standard emission sample for testing environmental chamber recovery rate and testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108776054B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4090480B2 (en) * | 2005-10-25 | 2008-05-28 | 松下電工株式会社 | Chemical substance emission measuring device |
| JP5751018B2 (en) * | 2011-05-30 | 2015-07-22 | いすゞ自動車株式会社 | SVOC emission rate control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2452495Y (en) * | 2000-12-07 | 2001-10-10 | 刘召辉 | Perfume diffusing control device |
| CN2808632Y (en) * | 2005-07-13 | 2006-08-23 | 唐真平 | Electric heating aromatic emitter for car body |
| CN101881688B (en) * | 2010-06-13 | 2011-12-28 | 清华大学 | Standard distribution sample for detecting comprehensive performance of environmental chamber and detection method thereof |
-
2018
- 2018-06-20 CN CN201810637323.XA patent/CN108776054B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4090480B2 (en) * | 2005-10-25 | 2008-05-28 | 松下電工株式会社 | Chemical substance emission measuring device |
| JP5751018B2 (en) * | 2011-05-30 | 2015-07-22 | いすゞ自動車株式会社 | SVOC emission rate control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108776054A (en) | 2018-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2751559B1 (en) | Explosive and narcotics detection dog training with vapour or aerosol air impregnation | |
| CN101881688B (en) | Standard distribution sample for detecting comprehensive performance of environmental chamber and detection method thereof | |
| CN201207026Y (en) | Radioactive aerosol generating and sampling apparatus in radon chamber | |
| Hari et al. | An improvement of the method for calibrating measurements of photosynthetic CO2 flux | |
| CN108776054B (en) | Standard emission sample for testing environmental chamber recovery rate and testing method | |
| CN108918575A (en) | Step temperature rise that is a kind of while measuring building materials formaldehyde emission characterisitic parameter under multi-temperature is closed to distribute method | |
| CN108614001A (en) | Measure micro- pond thermal desorption device and the application of half volatile organic contaminant burst size | |
| Baldelli et al. | Real-time measurements of formaldehyde emissions in a gross anatomy laboratory | |
| CN110220823A (en) | A kind of easy device and method measuring gas diffusion coefficient in the soil body | |
| CN103439150B (en) | A kind of footwear VOC volatilization sampling apparatus and method | |
| WO2008070922A1 (en) | Flux chamber | |
| CN207992128U (en) | Semi-volatile organic matter release characteristics test device | |
| CN107328882A (en) | Coal volatility and volatile ingredient determine device and assay method | |
| CN201440116U (en) | Generation and collection equipment for volatile substances | |
| Guillota | Odour measurement: focus on main remaining limits due to sampling | |
| CN205844122U (en) | A kind of for testing diluent and the test device of raw material solvent rate of volatilization | |
| CN108827732B (en) | Standard emission sample for evaluating recovery rate of environmental chamber and evaluation method | |
| CN204101534U (en) | Miniature VOC testing laboratory system | |
| CN108918374B (en) | Device and method for testing air permeability of underground interlayer | |
| CN106596205A (en) | Method for collecting and calibrating ambient air and preparation method of medical gas | |
| Lazik et al. | New Sensor Technology for Field‐Scale Quantification of Carbon Dioxide in Soil | |
| CN113917091A (en) | Aquaculture waste compost ammonia emission sampling device | |
| KR100755952B1 (en) | Method for manufacturing 2,4-dnph coating silica or silica gel used in a cartridge for concentrating carbonyl compound in quality of air and cartridge having 2,4-dnph coating silica or silica gel | |
| US20180151341A1 (en) | Online mass spectrometer for real-time detection of volatile components from the gas and liquid phase for process analysis | |
| KR20140142541A (en) | Moisture transmission testing instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |