CN112067751A - Emission detection device - Google Patents
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- CN112067751A CN112067751A CN202010952498.7A CN202010952498A CN112067751A CN 112067751 A CN112067751 A CN 112067751A CN 202010952498 A CN202010952498 A CN 202010952498A CN 112067751 A CN112067751 A CN 112067751A
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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
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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
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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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
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
An embodiment of the present invention provides a device for detecting emissions, including: a cover body which defines a first accommodating space for accommodating emissions emitted by a material to be detected; a seal ring mounted on the cover body for sealing between the cover body and a surface covered by the cover body; and the sensor is arranged on the cover body and is used for detecting the emissions in the first accommodating space. In the device for detecting the substances emitted by the embodiment, the cover body and the sealing ring can be used for buckling on the surface of the material to form the closed cavity, so that the environmental chamber can be replaced, air for controlling the temperature and humidity does not need to be continuously introduced, the pollutants emitted from the surface of the material are rapidly accumulated in the closed cavity, and a sensor in the cavity is used for detecting a concentration curve of the pollutants accumulated for a certain time. Furthermore, the highest concentration rising curve slope can be calculated according to the concentration curve and converted into the material pollution emission rate. Therefore, the embodiment of the invention can screen and judge whether the pollution emission rate of the material meets the requirement or not.
Description
Technical Field
The embodiment of the invention relates to the technical field of detection of environmental protection performance of materials, in particular to a device for detecting emissions.
Background
In newly decorated rooms, the emission of pollutants from materials such as architectural decorations is a major cause of indoor air pollution problems, wherein the pollutants emitted in the indoor air may be referred to as emissions or volatiles. In the decoration project, it is important to detect and control the pollution emission performance of the material.
A commonly used method for detecting emissions of contaminated materials is an environmental chamber method, which includes: the material is put into an environment cabin, the environment cabin simulates the condition of a real room, and the pollution concentration in the environment cabin is measured, so that the pollution emission performance of the material is represented. For example, chapter 4.60 of GB/T17657 and 2013 provides a climate box method (also called environmental chamber method), and LY/T1612 and 2004 also provide 1m for detecting formaldehyde emission3Climate box "; in both climatic chambers it is similarly described to create a space (i.e. to simulate a room) in which the temperature and humidity can be controlled and the number of air changes (continuous flow of clean air) can be controlled, to place a material of a certain size into the space, and to determine the amount (or rate) of emission of the material by measuring the concentration and variation of contaminants in the space (using standard sample sampling in combination with instrumental analysis). However, the environmental chamber method needs to send the material to a special laboratory for detection, and the detection time is long (1-28 days are different), so that the pollution emission performance of the material cannot be detected and judged quickly in the field scenes such as a construction site, a warehouse site, a factory production site and the like, and the pollution source can not be checked in a finished room, so that the construction period is easily delayed due to long detection time.
The CHETEC company provides a simple instrument for testing the pollution emission of the material with the model number of FL-0100, wherein a miniaturized environmental chamber is built on the surface of the material by utilizing a stainless steel cover to be tightly pressed, clean air for controlling the temperature and the humidity is continuously introduced, stable temperature and humidity and pollutant concentration are built within a certain time, and the pollution emission rate of the material is measured by collecting pollutants in the micro chamber and analyzing the pollutants by using a laboratory instrument. Although the existing CHETEC method for the micro environmental chamber can be operated on a construction site, a warehouse site, a factory production site and a finished room, the method needs to carry a clean air generating device with controllable temperature and humidity, the time for detecting a primary material is about 30-60 min, and the collected sample still needs to be analyzed by a laboratory instrument, so that the timeliness of the method is higher than that of the environmental chamber method, but the method cannot be screened quickly in time.
Thus, there is a pressing need for a rapid screening tool for material contamination emission performance. Meanwhile, for the constructed decoration project, if the indoor air quality does not reach the standard, a tool capable of rapidly checking the pollution emission performance of the installed material is also needed for searching the main indoor pollution source.
Disclosure of Invention
The embodiment of the invention aims to provide a device for detecting emissions, which can solve the technical problem that the detection of the emission performance of material pollution in the prior art is not fast enough.
The embodiment of the invention adopts the following technical scheme: an emissions detection device, comprising: the cover body is used for limiting a first accommodating space which is used for accommodating the emissions emitted by the material to be detected; a seal ring mounted on a first side of the cover for forming a seal between the cover and a surface covered by the cover; and the sensor is arranged on the cover body and is used for detecting the emissions in the first accommodating space.
Optionally, the emissions detection device further comprises a data acquisition and calculation module and a display screen arranged on the cover body; the data acquisition and calculation module is connected with the sensor and is used for acquiring and calculating data detected by the sensor; the display screen is connected with the data acquisition and calculation module and used for displaying the calculation result of the data acquisition and calculation module.
Optionally, the data acquisition and calculation module is further configured to perform temperature and humidity calibration on the data detected by the sensor.
Optionally, the sensor is configured to detect a concentration curve of emissions emitted by the material to be detected accumulated in the first accommodating space for a certain time; the data acquisition and calculation module is used for calculating the slope of the highest concentration rising curve of the concentration curve and calculating the pollution emission rate of the material according to the slope of the highest concentration rising curve.
Optionally, the emissions detection device further comprises a container defining a second receptacle space for receiving a material to be detected; the container is used for being matched with the cover body to clamp the sealing ring between the container and the cover body, and the material to be detected faces the first accommodating space.
Optionally, the depth of the container is arranged to be adjustable to accommodate different thicknesses of material to be detected.
Optionally, the container at least provides an inner surface defining the second housing space to not emit and adsorb contaminants.
Optionally, the inner surface of the container is specular stainless steel or the inner surface of the container is polytetrafluoroethylene.
Optionally, the emissions detection device further comprises a zero air supply; the zero air supply device is connected with the cover body and used for providing clean air into the first accommodating space.
Optionally, the cover body is flat, and an air inlet and an air outlet which are communicated with the first accommodating space are arranged on the cover body; the air inlet is arranged at the edge part of the cover body close to the sealing ring and is used for being connected with the zero air supply device; the exhaust hole is arranged in the middle of the cover body; the height of the first accommodating space is gradually reduced from the middle space to the edge space close to the sealing ring.
Optionally, the sensor has a sensor probe, the sensor probe being located within the first housing space.
Optionally, the cover body at least sets the inner surface for limiting the first accommodating space not to emit and adsorb pollutants.
Optionally, the inner surface of the cover is specular stainless steel or the inner surface of the cover is polytetrafluoroethylene.
Optionally, the sensor is at least one of an ammonia sensor, a benzene series sensor, a formaldehyde sensor and a TVOC sensor.
Compared with the prior art, in the detection device that gives out material of this embodiment, owing to can use for example the cover body and the sealing washer of stainless steel cover to detain and form small-size airtight cavity on the surface of material to replace the environment cabin, also need not to let in temperature humidity control's air continuously, make the pollutant that gives off from the surface of material accumulate fast in small-size airtight cavity, utilize the sensor in the cavity to detect the concentration curve that the pollutant accumulated for a certain time, the accumulation time here is shorter, thereby makes and realizes the short-term test. Furthermore, the highest concentration rising curve slope can be calculated according to the concentration curve and converted into the material pollution emission rate. Therefore, the embodiment of the invention can preliminarily screen and judge whether the pollution emission rate of the material meets the requirement.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural view of an emissions detection device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an emissions detection device according to yet another embodiment of the present invention;
fig. 3 is a schematic structural view of an emissions detection device according to another embodiment of the present invention.
Part list: the device comprises emission detection devices 100,200 and 300, a material 400, a cover body 10, a first accommodating space 11, a first side 12, an air inlet 13, an air outlet 14, an edge part 15, a middle part 16, a sealing ring 20, a sensor 30, a sensor probe 31, a circuit board 32, a data acquisition and calculation module 40, a display screen 50, a container 60, a second accommodating space 61, a bottom 62 and a zero air supply device 70.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, an embodiment of the invention provides an emissions detection device 100. the emissions detection device 100 may include a housing 10, a seal ring 20, and a sensor 30.
The housing 10 defines a first receiving space 11, and the first receiving space 11 is used for receiving the emissions emitted from the material 400 to be detected. The seal ring 20 is mounted to the first side 12 of the housing 10 for sealing between the housing 10 and the surface that the housing 10 covers. The sensor 30 is mounted on the housing 10 and is used for detecting the emissions in the first receiving space 11.
The cover 10 may be a cover inert to the emissions to be detected, that is, the material of the cover 10 should be selected to be non-reactive to the emissions to be detected, non-adsorptive, and non-self-generating, so that the first receiving space 11 provided therein does not interfere with the detection. In some embodiments, the enclosure 10 may be a stainless steel enclosure; alternatively, the cover 10 may be made of other materials, and the inner surface defining the first receiving space 11 is coated with ptfe, so that the same effect as that of a stainless steel cover is obtained by chemical stability of ptfe. In other embodiments, the cover 10 at least provides the inner surface defining the first housing space 11 not to emit and adsorb pollutants; for example, the inner surface of the shield 10 may be specular stainless steel or polytetrafluoroethylene, or other material that is non-shedding and non-adsorbing to contaminants.
The sealing ring 20 can be mounted on the first side 12 of the cover 10 by bonding, nesting, etc., and the first side 12 can be a surface aligned with the plane of the opening of the first receiving space 11. Thus, when the cover 10 is pressed against the surface of the material 400 to be detected through the first side 12, the sealing ring 20 can form a seal between the cover 10 and the surface of the material 400 covered by the cover 10, thereby achieving a sealing effect on the first receiving space 11. In some embodiments, the sealing ring 20 may be made of an elastic material, preferably a material that does not generate emissions, such as silicone, and does not react with and adsorb the emissions to be detected.
The sensor 30 has a sensor probe 31, and the sensor probe 31 is located in the first housing space 11 so as to detect emissions collected in the first housing space 11. It will be readily appreciated that the sensor probe 31 may form a seal with the housing 10 adjacent the junction of the first receptacle 11 to prevent emissions from contacting other components of the sensor 30. For example, the sensor 30 may further include a circuit board 32 and electronic components (not shown) mounted thereon, and the circuit board 32 and the electronic components mounted thereon may be disposed to be isolated from contact with emissions in the first receiving space 11 by the sensor probe 31. In some embodiments, the circuit board 32 and its electronic components may be embedded in the physical material of the enclosure 10 or may be located substantially outside the enclosure 10.
The material 400 to be detected may be an inner wall surface of a newly decorated room, or the like. The sensor 30 may be a formaldehyde and TVOC sensor, since decorative materials tend to emit polluting emissions such as formaldehyde and VOCs. The sensor 30 can detect the concentration profile of the polluting emissions accumulating for a certain time in the first receiving space 11. In addition, the sensor 30 may be a formaldehyde sensor, a TVOC sensor, a benzene series sensor, an ammonia gas sensor, or the like, which may be used in combination, depending on the specific application.
Further, according to the concentration curve, the slope of the highest concentration rising curve of the concentration curve can be calculated, and the material pollution emission rate can be calculated according to the slope of the highest concentration rising curve. In some embodiments, a display-enabled data collection computing device may be used to communicate with the sensor 30, and to collect, compute, and display data detected by the sensor 30. The data acquisition computing device may be a stand-alone device that may be wired or wirelessly connected to the sensor 30 when in use.
In the above embodiment, since the cover body 10 and the sealing ring 20, such as a stainless steel cover, can be fastened on the surface of the material 400 to form a closed cavity, preferably a small closed cavity, instead of an environmental chamber, there is no need to continuously introduce air for temperature and humidity control, so that the pollutants emitted from the surface of the material 400 are rapidly accumulated in the closed cavity, and a concentration curve of the pollutants accumulated for a certain time is detected by using a gas sensor, such as formaldehyde and VOC, in the cavity, and the accumulation time is short, so that rapid detection is realized. Further, the highest concentration rise curve slope can be calculated according to the concentration curve and converted into the material pollution emission rate. Therefore, the embodiment of the invention can preliminarily screen and judge whether the formaldehyde and TVOC pollution emission rate of the material meets the requirements or not.
Referring to fig. 2, the embodiment of the invention provides another emissions detecting device 200, and the emissions detecting device 200 may include a housing 10, a sealing ring 20, a sensor 30, a data acquisition and calculation module 40, and a display screen 50.
The housing 10, seal 20 and sensor 30 of the emissions detection device 200 may be similar to the housing 10, seal 20 and sensor 30, respectively, of the emissions detection device 100 of fig. 1, and their differences will be described in greater detail herein.
In the embodiment shown in FIG. 2, both the data acquisition and computation module 40 and the display screen 50 can be disposed on the enclosure 10. The data acquisition and calculation module 40 is connected to the sensor 30 and is configured to acquire and calculate data detected by the sensor 30. The display screen 50 is connected to the data acquisition and calculation module 40, and is configured to display a calculation result of the data acquisition and calculation module 40. The data acquisition and calculation module 40 and the display screen 50 can be separately arranged and connected with each other, that is, the data acquisition and calculation module 40 and the display screen 50 can be arranged at different parts of the cover 10. Alternatively, the display screen 50 may be provided as a unitary component with the data collection computing module 40 and mounted to the enclosure 10 such that the display screen 50 covers the data collection computing module 40 and is oriented for viewing by an operator.
In a further embodiment, the data acquisition and calculation module 40 is further configured to perform temperature and humidity calibration on the data detected by the sensor 30. Because the temperature and the humidity of the detection site are different, the detection of the material pollution emission performance can be calibrated by a material emission temperature and humidity calibration formula carried by a program arranged in the data acquisition and calculation module 40.
In a further embodiment, the sensor 30 is used for detecting a concentration curve of the emissions emitted by the material 400 to be detected accumulated in the first accommodating space 11 for a certain time; the data acquisition and calculation module 40 is configured to calculate a slope of a highest concentration rising curve of the concentration curve, and calculate a material pollution emission rate according to the slope of the highest concentration rising curve.
In a further embodiment, the emissions detection device 200 further comprises a zero air supply 70; the zero air supplier 70 is connected to the housing 10 for supplying clean air into the first receiving space 11. The zero air supplier 70 is suitable for detecting the environment with heavy air pollution on site, and can be a gas cylinder for containing compressed clean air or a device for generating clean air, namely a zero air cylinder or a zero air generator; in particular, the zero-air supply 70 may be a small zero-air generator or a gas cylinder. In order to avoid the air in the field being covered into the closed cavity and affecting the test of the real pollution emission rate of the material, after the cover 10, such as a stainless steel cover, is fastened on the material 400, clean air is supplied into the first receiving space 11 from the zero air supplier 70 to exhaust the original polluted air in the first receiving space 11.
In a further embodiment, the cover 10 is flat, and the cover 10 is provided with an air inlet 13 and an air outlet 14 which are communicated with the first accommodating space 11; the air inlet hole 13 is arranged at the edge part 15 of the cover body 10 close to the sealing ring 20 and is used for connecting with the zero air supplier 70; the exhaust hole 14 is arranged in the middle part 16 of the cover body 10; the height of the first receiving space 11 is gradually reduced from the intermediate space to the edge space near the gasket 20. The air inlet 13 and the air outlet 14 can be through holes formed on the mask body 10, or can be ventilation pipes inserted into the through holes formed on the mask body 10; also, an air duct may be connected between the zero air supplier 70 and the air intake holes 13. After the mask body 10 is fastened to the material 400, clean air is introduced through the air inlet holes 13 of the mask body 10, so that the polluted air is discharged from the air outlet holes 14 of the mask body 10, and the air inlet holes 13 and the air outlet holes 14 can be closed, i.e. the clean air is not required to be continuously introduced. Since the first receiving space 11 is filled with clean air, the readings of the sensor 30 can be returned to zero, and then the test of the emission rate of the material contamination can be started. Since the cover 10 has a flat shape, the first receiving space 11 can cover a relatively large area of the surface of the material 400, and the formed closed space is relatively small, which enables rapid detection. In addition, by setting the height of the first receiving space 11 to be gradually reduced from the middle to the edge of the cover 10 and setting the air discharge hole 14 at the higher middle portion 16, it is easier to quickly replace the contaminated air in the first receiving space 11 with clean air, thereby speeding up the inspection.
Referring to fig. 3, an embodiment of the invention provides another emissions detection device 300. the emissions detection device 300 may include a housing 10, a gasket 20, a sensor 30, and a container 60.
The emissions detection device 300 may also include a data acquisition and calculation module 40, a display screen 50, and a zero air supply 70.
The housing 10, the seal ring 20, and the sensor 30 of the emissions detection device 300 may be similar to the housing 10, the seal ring 20, and the sensor 30 of fig. 1 or 2, respectively, and the data acquisition and calculation module 40, the display screen 50, and the zero air supplier 70 of the emissions detection device 300 may be similar to the data acquisition and calculation module 40, the display screen 50, and the zero air supplier 70 of fig. 2, respectively, and their differences will be mainly described in detail herein.
In the embodiment shown in fig. 3, the container 60 defines a second housing space 61 for housing a material 400 to be detected; the container 60 is used for cooperating with the cover 10 to clamp the sealing ring 20 between the container 60 and the cover 10, and to make the material 400 to be detected face the first receiving space 11. The container 60 is suitable for materials, such as carpets, having uneven surfaces or having difficulty in forming a closed cavity only by the cover body 10 and the sealing ring 20. For the materials with uneven surfaces or difficult to form a closed cavity through the cover body 10 and the sealing ring 20, the materials can be cut into one piece on site and put into a container 60 matched with the cover body 10, so that the detection of the pollution emission rate of the small closed cavity is realized.
In a further embodiment, the depth of the container 60 is configured to be adjustable to accommodate different thicknesses of the material 400 to be detected. For example, the bottom 62 of the container 60 may be configured to move in the depth direction of the container 60, so that the bottom 62 of the container 60 is adjusted upward when the material 400 to be detected is thin, to lift up the material 400 to be detected and make the surface of the material 400 to be detected flush with the top of the container 60; and adjusts the bottom 62 of the container 60 downward when the material 400 to be inspected is thick, moving the material 400 to be inspected downward and making the surface of the material 400 to be inspected flush with the top of the container 60. That is, the sealed space formed by the edge of container 60 being sealingly engaged with sealing ring 20 of cover 10 has the same spatial dimension as the sealed first receiving space 11 formed by cover 10 and the surface of material 400.
In a further embodiment, the container 60 is a stainless steel container or is coated with teflon on the inner surface defining the second receiving space 61. It will be readily appreciated that, since the container 60 needs to cooperate with the enclosure 10 to form a sealed cavity, the material of the container 60 should be similar to that of the enclosure 10 so that it does not interfere with the polluting emissions in the first receiving space 11. In some embodiments, the container 60 may at least provide the inner surface defining the second housing space 61 to not emit and adsorb contaminants; for example, the inner surface of the container 60 may be specular stainless steel or polytetrafluoroethylene, or other material that is non-shedding and non-adsorbing to contaminants.
In conjunction with the above description, it can be appreciated that the basic operating principles of the emissions detection by the emissions detection devices 100,200, and 300 of embodiments of the present invention are: the material 400 is covered by a cover body 10 such as a stainless steel cover to form a cavity, preferably a small cavity, so that pollutants emitted from the surface of the material 400 are accumulated in the cavity, a concentration curve of the pollutants accumulated for a certain time is detected by a sensor 30 such as a formaldehyde and VOC sensor, and the concentration curve is converted into a pollution emission rate, thereby judging whether the pollution emission rate of the materials such as formaldehyde and TVOC is qualified.
In addition, with reference to fig. 2-3, an exemplary method of using an emissions detection device 200 and 300 in accordance with embodiments of the present invention may include: fastening the cover body 10 such as a stainless steel cover on the surface of the material 400 and pressing, or cutting the material 400 and putting into a container 60 such as a stainless steel container and then fastening the cover body 10; zero air is introduced into the first accommodating space 11 of the cover body 10 from an air inlet 13 on the cover body 10, and the original polluted gas in the first accommodating space 11 is exhausted through an exhaust hole 14, so that the display of the sensor 30 is zero; plugging the air inlet 13 and the air outlet 14, and clicking an operation key arranged on the data acquisition and calculation module 40 or the display screen 50 to start the test; the concentration of the pollutants emitted from the material 400 in the first accommodating space 11 continuously rises for a period of time, and the test of the click operation key is finished; the result of the material pollution emission performance is automatically calculated and displayed through the data acquisition and calculation module 40 and the display screen 50.
As will be understood from the above description, the emission detector provided by the present invention has the following advantages as a whole: firstly, a type closed cavity, preferably a small closed cavity, is formed on the surface of a material through a cover body such as a stainless steel cover, so that the concentration of pollution released from the surface of the material is quickly accumulated in the closed cavity, and further quick detection can be realized; secondly, the cover body covers a larger material area as much as possible, the volume of a closed cavity is designed to be as small as possible, the rapid accumulation of material pollution is realized, the concentration increase rate detection is carried out in a polluted gas sensor mode, and the rapid detection result of the material pollution emission rate can be provided within 5 min; thirdly, the material pollution emission can be preliminarily screened in the scenes of construction sites, warehouse sites, factory production sites, finished rooms and the like, problematic materials are screened, and then an environmental chamber method is used for arbitration; therefore, the detection time and cost can be greatly saved, and the construction period is not interfered; and fourthly, the invention can convert the maximum pollution concentration rising slope into the material pollution emission performance according to the maximum pollution concentration rising slope by calculating the maximum pollution concentration rising slope.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (14)
1. An emissions detection device (100, 200, 300), comprising:
a cover (10) defining a first receiving space (11), said first receiving space (11) being adapted to receive emissions emitted by a material (400) to be tested;
a sealing ring (20) mounted on the first side (12) of the cover (10) for sealing between the cover (10) and a surface covered by the cover (10); and
a sensor (30) mounted on the housing (10) for detecting emissions within the first receiving space (11).
2. The emissions detection device (100, 200, 300) of claim 1, wherein said emissions detection device (100, 200, 300) further comprises a data acquisition and calculation module (40) and a display screen (50) disposed on said housing (10); the data acquisition and calculation module (40) is connected with the sensor (30) and is used for acquiring and calculating data detected by the sensor (30); the display screen (50) is connected with the data acquisition and calculation module (40) and is used for displaying the calculation result of the data acquisition and calculation module (40).
3. The emissions detection device (100, 200, 300) of claim 2, wherein the data acquisition and computation module (40) is further configured to perform temperature and humidity calibration of data detected by the sensor (30).
4. The emissions detection device (100, 200, 300) of claim 2, wherein the sensor (30) is adapted to detect a concentration profile of emissions emitted by the material (400) to be detected accumulating within the first receptacle space (11) over a period of time; the data acquisition and calculation module (40) is used for calculating the slope of the highest concentration rising curve of the concentration curve and calculating the material pollution emission rate according to the slope of the highest concentration rising curve.
5. The emissions detection device (100, 200, 300) of claim 1, wherein the emissions detection device (100, 200, 300) further comprises a container (60), the container (60) defining a second receiving space (61) for receiving a material (400) to be detected; the container (60) is used for being matched with the cover body (10) to clamp the sealing ring (20) between the container (60) and the cover body (10), and the material (400) to be detected faces the first accommodating space (11).
6. The emissions detection device (100, 200, 300) of claim 5, wherein the depth of the container (60) is configured to be adjustable to accommodate different thicknesses of material (400) to be detected.
7. The emissions detection device (100, 200, 300) of claim 5, wherein the container (60) at least provides interior surfaces defining the second receptacle space (61) with a non-shedding and non-adsorption of contaminants.
8. The emissions detection device (100, 200, 300) of claim 7, wherein the interior surface of the container (60) is specular stainless steel or the interior surface of the container (60) is polytetrafluoroethylene.
9. The emissions detection device (100, 200, 300) of claim 1, wherein the emissions detection device (100, 200, 300) further comprises a zero air supply (70); the zero air supplier (70) is connected with the cover body (10) and is used for supplying clean air into the first accommodating space (11).
10. The emissions detection device (100, 200, 300) according to claim 9, wherein the housing (10) is flat, the housing (10) being provided with an inlet hole (13) and an outlet hole (14) communicating with the first receiving space (11); the air inlet hole (13) is arranged at the edge part (15) of the cover body (10) close to the sealing ring (20) and is used for being connected with the zero air supplier (70); the exhaust hole (14) is arranged in the middle part (16) of the cover body (10); the height of the first accommodating space (11) is gradually reduced from the middle space to the edge space close to the sealing ring (20).
11. The emissions detection device (100, 200, 300) according to any one of claims 1-10, wherein the sensor (30) has a sensor probe (31), the sensor probe (31) being located in the first receptacle space (11).
12. The emissions detection device (100, 200, 300) according to any one of claims 1-10, wherein the housing (10) is configured such that at least an inner surface defining the first receiving space (11) is non-emissive and non-adsorptive of contaminants.
13. The emissions detection device (100, 200, 300) of claim 12, wherein the interior surface of the housing (10) is specular stainless steel or the interior surface of the housing (10) is polytetrafluoroethylene.
14. The emissions detection device (100, 200, 300) of any of claims 1-10, wherein the sensor (30) is at least one of an ammonia sensor, a benzene-based sensor, a formaldehyde sensor, and a TVOC sensor.
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