CN212060150U - Test equipment for testing purification degree of polluted gas - Google Patents
Test equipment for testing purification degree of polluted gas Download PDFInfo
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- CN212060150U CN212060150U CN202020554636.1U CN202020554636U CN212060150U CN 212060150 U CN212060150 U CN 212060150U CN 202020554636 U CN202020554636 U CN 202020554636U CN 212060150 U CN212060150 U CN 212060150U
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- 238000012360 testing method Methods 0.000 title claims abstract description 104
- 238000000746 purification Methods 0.000 title claims abstract description 40
- 239000003570 air Substances 0.000 claims abstract description 125
- 239000000356 contaminant Substances 0.000 claims abstract description 48
- 239000012080 ambient air Substances 0.000 claims abstract description 44
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 15
- 238000004887 air purification Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 5
- 238000005202 decontamination Methods 0.000 claims description 2
- 230000003588 decontaminative effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 description 27
- 231100000719 pollutant Toxicity 0.000 description 27
- 239000007789 gas Substances 0.000 description 15
- 238000011084 recovery Methods 0.000 description 13
- 238000009423 ventilation Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 9
- 239000000809 air pollutant Substances 0.000 description 8
- 231100001243 air pollutant Toxicity 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
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Abstract
A test apparatus for testing a purification degree of a contaminated gas, comprising: the side wall of the sealed chamber containing ambient air is provided with a multifunctional sampling port; a contaminant introduction module for quantitatively contaminating ambient air in the sealed chamber to form quantitatively contaminated air; the purification module is used for purifying the air in the sealed chamber to form purified air and discharging the purified air back to the sealed chamber to form purified ambient air gas; a measurement module disposed at least partially within the sealed chamber for measuring a concentration of contaminants remaining in the purified ambient air therein; and the pressure regulating module comprises a regulating valve and a connecting pipeline which are positioned outside the sealed cavity, one end of the connecting pipeline is connected to the multifunctional sampling port through the regulating valve, and the other end of the connecting pipeline can be connected to the pressure regulating device so as to regulate the pressure in the sealed cavity and enable the pressure to be smaller than the atmospheric pressure. The test equipment can be used for testing and evaluating the purifying capacity of the air purifying device for the polluted gas.
Description
Technical Field
The utility model relates to a testing arrangement field to concretely relates to test equipment who tests gaseous pollutants's purification degree, this test equipment can be used to the aviation field especially.
Background
In recent years, the field of civil aircraft has become more concerned with the quality of the air in the cabin. The air pollutants in the cabin are taken as important factors influencing the quality of the air in the cabin, and the purification mode of the air pollutants is increasingly paid attention by scientific researchers. The air purification device suitable for the civil aircraft ventilation system enters the starting development stage. In combination with the characteristics of civil aircraft ventilation systems, the purification devices are mostly of a pipeline type structure and are mostly installed on the pipeline of the recirculation subsystem, and the purification devices can be considered to perform an air purification process which is in a closed space and fixes the air volume.
In order to evaluate the purifying effect of such a pipe-line type air purifying apparatus, it is necessary to perform an identification test of such an apparatus in a normal pressure environment and a low pressure environment to detect the space purifying capacity of the purifying apparatus for air pollutants. However, the existing detection method for the air purification device is mostly applied to the ground normal pressure environment, such as in buildings, cabins of vehicles and ships, and the air purification mode adopted by the existing test platform is mostly a non-pipeline type air purification device with free flow in a large space, which is different from the requirement of the civil aircraft industry for the detection method for the air purification device, so that the detection method cannot be used as usual.
CN 206818683U discloses an air pollutant detecting device (publication date: 2017, 12 and 29), in which polluted gas enters the pollutant detecting device from the outside through an air inlet funnel, is filtered and purified, and then is discharged through an air vent. It is noted that the contaminant detection device does not include a pressure sensor inside, and is not capable of measuring and effectively controlling the gas pressure inside the device, and therefore cannot be used to simulate a low pressure environment within the aircraft.
CN 205747304U discloses a ventilation system air pollutant detecting device (published: 2016, 11, 30), in which the outside air enters the air purifier through the air inlet and the air outlet, and then enters the lower part of the room through the air outlet, the mixed air in the room is exhausted to the outside through the exhaust pipe from the upper air outlet, and in which the temperature and humidity sensor and the toxic gas sensor are arranged, and the related air parameters can be displayed through the display screen. However, the air purified by the detection device is directly discharged and therefore cannot be used to simulate the recirculation process of the ventilation system inside the aircraft.
CN 102261997a discloses a vehicle emission test device (publication date: 2011, 11, 30 days) which is used for vehicle evaporative pollutant emission test and vehicle air pollutant emission test. The test vehicle is placed in the cavity of the test chamber, air is injected into the cavity through the air inlet pipe, and relevant test requirements are met through the conditions of parameters such as temperature, humidity and pressure, so that the vehicle evaporative pollutant emission test or the vehicle air pollutant emission test is implemented. However, this test device is only used for testing vehicle emissions, does not contain a purifying function for pollutants, and as such does not simulate a recirculation ventilation process. Although the vehicle emission test device comprises a pressure regulating device mainly composed of two air bags, the function of the vehicle emission test device is to maintain the pressure in the cabin equal to the external atmospheric pressure, and the vehicle emission test device cannot be used for simulating a low-pressure environment in an airplane cabin.
It is therefore still desirable to provide a test device which can simulate a recirculation ventilation process in an aircraft cabin and thus test the purification capacity of the air purification device for the respective pollutant by means of this process.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a accomplish in view of above-mentioned technical problem, its aim at provides a test equipment who tests gaseous pollutants's purification degree, and this test equipment includes:
a sealed chamber, which has a fixed volume and contains ambient air and which is provided with a multifunctional sampling port on the side wall,
-a contaminant introduction module for introducing contaminants into the sealed chamber to quantitatively contaminate the ambient air in the sealed chamber to form quantitatively contaminated air;
-a cleaning module disposed within the sealed chamber configured to clean contaminated air within the sealed chamber to form cleaned air and to exhaust the cleaned air back into the sealed chamber to form cleaned ambient air gas;
-a measurement module, at least partially disposed within the sealed chamber, for measuring a concentration of remaining contaminants in the purified ambient air within the sealed chamber; and
-a pressure regulating module comprising a regulating valve located outside the sealed chamber and a connecting line arranged with one end connected to the multifunctional sampling port via the regulating valve and the other end connectable to a pressure regulating device for regulating the pressure inside the sealed chamber to be less than atmospheric pressure.
Here, the reason why the pressure in the sealed chamber is made smaller than the atmospheric pressure is to better simulate the atmospheric pressure environment in the aircraft cabin. When the cabin height is 6000-.
Quantitative contamination means that the total amount of contaminants introduced by the contaminant introduction module for contaminating the ambient air in the sealed chamber is predetermined in order to evaluate the purification capacity of the air purification device, whereby the ambient air is referred to as "quantitatively contaminated air" after mixing with the ambient air, i.e. for a certain volume of ambient air, is contaminated with a predetermined total amount of contaminants.
It should be noted that in the context of the present invention, the concentration of the remaining contaminants in the purified ambient air is intended to indicate the concentration of said contaminants contained in the gas, i.e. the concentration of the contaminants determined in the air discharged back into the sealed chamber after the quantitatively contaminated air containing contaminants has been purified by the purification module and discharged back into the sealed chamber.
Preferably, the test device according to the invention is used for testing the degree of purification of a fixed volume of a contaminated gas, for example ambient air, the fixed volume being achieved by means of a fixed volume of a sealed chamber.
Specifically, the contaminant introduction module included in the test device is a contaminant generation module that is disposed in the sealed chamber and contains a reagent for reacting to generate and quantitatively release a contaminant into the sealed chamber, forming the quantitatively contaminated air.
Additionally or alternatively, the contaminant introduction module is a multi-functional sampling port, the contaminant being obtained by quantitatively releasing a standard gas from a gas source into the sealed chamber through the multi-functional sampling port, thereby forming the quantitatively contaminated air. The standard gas is a gas containing a concentration of contaminants required for the test to reach a predefined threshold. When the specific pollutant to be used for testing is difficult to prepare through chemical reaction by the pollutant generation module, the pollutant is directly and quantitatively released into the sealed cavity by externally connecting the multifunctional sampling port with a standard gas source, so that quantitatively polluted air is formed.
Particularly preferably, the test apparatus further comprises a recovery module. The recovery module may include, for example, an adsorbent to recover residual contaminants in the sealed chamber when necessary, for example, after the test is completed and the concentration of contaminants in the ambient air has decreased below a target value, but a certain amount of contaminants still remain in the sealed chamber and are not completely purified, the recovery module may be used to recover the residual contaminants before the sealed chamber is opened after the test is completed.
Preferably, the cleaning module of the testing apparatus includes an axial fan, an air guide pipe, an expansion air duct, and an air cleaning device, wherein the cleaning module is configured such that the axial fan introduces a quantitative contaminated air in the sealed chamber into the air guide pipe, and passes through the expansion air duct to the air cleaning device, thereby cleaning the quantitative contaminated air and forming the cleaned air.
It is particularly desirable that the purification module is further configured to send the purified ambient air to the air purification device for purification by means of the axial fan, the air duct and the expansion duct and to form purified air when the concentration of the remaining contaminants of the purified ambient air in the sealed chamber is greater than a predetermined threshold value.
It is particularly desirable to combine the axial flow fan in the purification module with the sorbent in the recovery module to facilitate recovery of residual contaminants after the test is completed.
The air purification device is desirably a photocatalyst core. In this air cleaning device, a certain amount of polluted air or clean ambient air undergoes a reaction to obtain purified air, which is discharged from the end of the air cleaning device back into the sealed chamber, thereby forming an air flow circuit: the quantitatively contaminated air or the purified ambient air in the sealed chamber was cyclically sent to the air purification apparatus, thereby testing the purification effect of the air purification apparatus on the quantitatively contaminated air. The arrangement realizes the simulation of the working condition that the tested air purifying device is arranged on the recirculation pipeline of the civil aircraft ventilation system.
Particularly ideally, the purification module of the test device is made of an environment-friendly material without VOC emission.
Preferably, the measuring module of the testing apparatus includes:
-a pressure tester provided on a wall of the sealed chamber, sealingly connected to the inside of the sealed chamber through the connection port, for detecting the pressure inside the sealed chamber, thereby enabling real-time monitoring of the pressure inside the sealed chamber and ensuring that the pressure inside the sealed chamber reaches a desired internal pressure less than or equal to atmospheric pressure before the test starts; and
an air quality tester placed inside the sealed chamber for performing a measurement, preferably in real time, of the concentration of the pollutants remaining in the purified ambient air inside the sealed chamber and outside the measuring module.
Particularly desirably, the measurement module further comprises:
-a temperature tester, provided within the sealed chamber, for measuring the temperature of a quantity of contaminated air or purified ambient air within the sealed chamber and outside the measuring module;
-a humidity tester, provided within the sealed chamber, for measuring the humidity of a quantity of contaminated air or purified ambient air within the sealed chamber and outside the measuring module; and
-a flow tester connected to the air conduit for measuring the flow within the air conduit to assist in testing the degree of purification of the quantitatively contaminated air.
The temperature, humidity and flow in the air conduit recorded by the temperature tester, the humidity tester and the flow tester of the measuring module are used for assisting the calculation required for the evaluation of the purification degree.
According to the utility model discloses an among the test equipment, be equipped with at least one on the antetheca of sealed cavity and open the door to supply the user to remove and place the device that each module of test equipment inside included when beginning to prepare the work before the test, and open the door on and be equipped with sealing strip and sealed hasp, thereby ensure the sealed condition in the test procedure.
According to the utility model discloses a still be equipped with at least one gloves trompil on test equipment's the antetheca, gloves trompil is connected with a gloves towards the inner space of sealed cavity sealedly.
Desirably, the glove is made from latex that is free of VOC emissions.
Preferably, all of the materials of the test device are made of inert materials that do not emit contaminants. It is particularly desirable that all of the seal components of the sealed chamber be of environmentally friendly material without VOC emissions. For example, the wall of the sealed chamber is made of a transparent material such as organic glass, so that the test process can be observed conveniently, and meanwhile, the strength, the good sealing performance and the air tightness reaching-0.02 MPa can be ensured. Therefore, direct contact between pollutants and testing personnel can be effectively isolated, and a low-pressure environment in the sealed cavity can be maintained, so that the pressure in the cabin of the airplane under different cabin heights can be simulated.
The utility model relates to a test equipment can detect pipeline formula air purification device's purification performance. The utility model discloses a test equipment has realized totally isolated airtight operation, is surveyed air volume and pressure and fixes to be equipped with the pollution sources and take place, purify, waste gas recovery's full stage processing procedure. The generation, purification, detection and recovery of air pollutants are all completed in the sealed chamber. The reacted purified air is still discharged into the sealed cavity from the tail end of the purifying device, and an air flow loop is formed. The test device can thus simulate the recirculation process of the ventilation system in the cabin of a civil aircraft.
The purification capacity of the air purification device for pollutants in the air can be quantitatively detected by the test equipment, and the test equipment also has the functions of air sampling and environment measurement and control. It has detection efficiency height, and stability is strong to can effectively manage and control the emergence and the recovery of pollutant, guarantee the effective advantage of keeping apart of tester and pollutant.
Drawings
With reference to the above purposes, the technical features of the invention are clearly described in the claims below, and its advantages are apparent from the following detailed description with reference to the accompanying drawings, which illustrate, by way of example, a preferred embodiment of the invention, without limiting the scope of the inventive concept.
Fig. 1 shows a test device according to the invention in a perspective view; and
fig. 2 schematically shows an arrangement of purification modules of a testing device according to the invention.
List of reference numerals:
4 a front wall;
10 testing equipment;
21 a multifunctional sampling port;
22 a multifunctional sampling port;
31 opening the door upwards;
32 opening the door upwards;
51 opening the glove;
52 opening the glove;
53 opening the glove;
54 glove openings;
61 line through holes;
71 an axial fan;
72 an air conduit;
721 a first straight section;
722 a second straight tube section;
723 a reducer union;
73 expanding the air duct;
74 an air purification device;
81 flow tester.
Detailed Description
While the present invention will be described in conjunction with the exemplary embodiments, it will be understood that this description is not intended to limit the invention to the exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.
For convenience in explanation and accurate definition in the appended claims, the terms "upper", "lower", "inner" and "outer" are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.
As shown in fig. 1, a test apparatus according to the present invention is generally designated by the reference numeral 10, the test apparatus 10 comprising:
a sealed chamber, of fixed volume, containing ambient air and provided with multifunctional sampling ports 21 and 22 on the side walls and with a wire-passing hole 61 for the cable of the testing device 10 to pass through, the wire-passing hole 61 being provided with a sealing rubber ring and in this embodiment all the walls of the sealed chamber being made of transparent organic glass without VOC emissions;
-a contaminant introduction module, here a contaminant generation module, which in the shown embodiment is arranged in the sealed chamber and contains reagents for reacting to generate said contaminants and quantitatively releasing them into the sealed chamber forming a quantitatively contaminated air;
-a decontamination module disposed within the sealed chamber configured to decontaminate a volume of contaminated air within the sealed chamber to form decontaminated air and to discharge the decontaminated air back into the sealed chamber to form a decontaminated ambient air gas;
-a measurement module disposed at least partially within the sealed chamber, the measurement module comprising:
a pressure tester provided on a wall of the sealed chamber, which is hermetically connected to the inside of the sealed chamber through a connection port;
an air quality tester, disposed within the sealed chamber, for real-time measurement of a concentration of remaining contaminants in the purified ambient air within the sealed chamber and outside of the purification module;
a temperature tester disposed within the sealed chamber for measuring a temperature of a quantitatively contaminated air or a purified ambient air within the sealed chamber and outside the purification module;
a humidity tester disposed within the sealed chamber for measuring humidity of the quantitatively contaminated air or purified ambient air within the sealed chamber and outside the purification module; and
a flow tester 81, shown in detail in fig. 2, connected to the air conduit 72 for measuring the flow within the air conduit to assist in testing the degree of air purification, an
A pressure regulation module comprising a regulation valve located outside the sealed chamber and a connection line, in the embodiment shown there being two connection lines, two regulation valves, each connection line being connected at one end to a corresponding multifunctional sampling port 21 or 22 via one regulation valve and being connectable at the other end to a pressure regulation device to regulate the pressure inside the sealed chamber to be less than atmospheric pressure.
It can also be seen in fig. 1 that the front wall 4 of the sealed chamber is provided with two upward opening doors 31, 32 for the user to prepare before the test starts, and that the upward opening doors 31, 32 are also provided with a sealing strip and a sealing catch. The front wall 4 is further provided with four glove openings 51, 52, 53, 54, each glove opening 51, 52, 53, 54 being sealingly connected to a glove facing the interior of the sealed chamber, the gloves being of a latex material free of VOC emissions and also being secured to the walls of the sealed chamber by means of a sealing strip and a sealing catch. During testing, the user can manipulate the devices within the chamber via the gloves, thereby ensuring that the quantitatively contaminated air within the chamber is completely isolated from the operator.
In an embodiment not shown, the testing device 10 may further comprise a recovery module which may have an adsorbent for adsorbing non-purified residual contaminants from the purified ambient air in the sealed chamber after the test is finished.
The multifunctional sampling ports 21, 22 may also serve the following purposes:
in a test in which a desired contaminant cannot be produced by the contaminant generation module provided in the sealed chamber, the multi-functional sampling port 21, 22 may be used as a contaminant introduction module by quantitatively releasing a standard gas into the sealed chamber through the multi-functional sampling port 21, 22, thereby forming quantitatively contaminated air;
in the test process, a certain amount of purified ambient air in the sealed cavity can be collected through the multifunctional sampling ports 21 and 22 and is externally connected with an analytical instrument for performing additional analysis on pollutant data and calibrating an air quality tester;
after the test is finished, for the residual pollutants inconvenient to be recovered by the recovery module arranged in the test equipment or for the test equipment without the recovery module, the multifunctional sampling ports 21 and 22 can be connected with the suction device through the connecting pipeline of the pressure regulating module, so that the waste gas containing the residual pollutants inconvenient to be treated is removed from the sealed chamber through the suction device.
Fig. 2 shows in particular the piping arrangement of the purification module. As can be seen in fig. 2, an axial fan 71 provides the driving force to draw a measured amount of contaminated air within the sealed chamber into an air duct 72. Further, the air is guided to an air cleaning device 74, which is a photocatalyst core, through an air duct 72 and an expanding duct. The purification capacity of the air purification device 74 is to be tested by means of the test apparatus 10, in which the air with the contaminants reacts chemically, producing purified air. The purge air is discharged from the rear, i.e., downstream, of the air purge device 74 back into the sealed chamber as a purge ambient air gas.
It should be noted that in connection with the real-time monitoring of the purified ambient air inside the sealed chamber by an air quality tester, not shown here, arranged in the sealed chamber, the above-mentioned purification process will take place again when the concentration of the contaminants remaining in the purified ambient air discharged back into the sealed chamber is still greater than the predetermined threshold value, until the concentration of the contaminants is below the predetermined limit value. Thus, a simulation of the conditions on the recirculation line of the ventilation system is formed.
It should also be noted that, as exemplarily shown in fig. 2, the air conduit 72 specifically includes a first straight pipe section 721, a second straight pipe section 722, and a reducer union 723, wherein the first straight pipe section 721 and the second straight pipe section 722 have different diameters.
Specifically, to meet the relevant requirements for flow testers in the national standard, the first straight section 721 should be a five-diameter straight section. For example, the first straight tube section 721 may be a D110 straight tube section and the second straight tube section 722 may be a D50 straight tube section, with a reducer union 723 for interconnection between the first straight tube section 721 and the second straight tube section 722.
As shown in fig. 2, the specific flow path for the amount of contaminated air or purified ambient air in the sealed chamber to be drawn into the purification module is: the air passes through the axial fan 71 to the first straight pipe section 721, the reducer union 723 to the second straight pipe section 722 and the flow tester 81, then passes through the reducer union 723 to the first straight pipe section 721 again, and passes through the expansion air duct 73 to the air purification device 74. In the illustrated embodiment, the air duct 72 includes a plurality of second straight tube sections 722, with the plurality of second straight tube sections 722 being connected therebetween by PVC flanges.
The following exemplary method of testing the purification capacity of the air purification device 74 with the test apparatus 10 is explained:
1) normally connecting all devices included in all modules in the test equipment 10, debugging to ensure that the devices are available, and calibrating all testers in the measurement module;
2) preparing a quantitative reagent used by the pollutant generation module completely, and placing the reagent in a sealed chamber;
3) adjusting the ambient air temperature to the target working condition temperature, and standing the test equipment 10 until the temperature is stable;
4) the upper doors 31 and 32 are closed to seal the chamber;
5) the multifunctional sampling ports 21 and 22 and the connecting pipeline are connected to a pressure regulating device, the regulating valve is opened, and air in the sealed cavity is extracted until the pressure in the sealed cavity reaches a target pressure value;
6) operating the pollutant generation module to quantitatively release pollutants into the sealed cavity to generate quantitatively polluted air;
7) turning on the axial fan 71;
8) monitoring various air parameters of the quantitative polluted air in the sealed chamber through various testers of the measuring module, such as temperature, humidity, pressure, pollutant concentration and the like until the parameters are stable and recording the parameters;
9) turning on the air purification device 74;
10) monitoring air parameters in the sealed cavity in real time, including temperature, humidity, pressure, pollutant concentration and the like, reading the air quality tester every 1 minute and recording data;
11) when the concentration of the pollutants in the sealed cavity is reduced to be lower than the standard concentration limit value, the axial flow fan 71 and the air purification device 74 are closed;
12) the operation recovery module is used for recovering the residual pollutants in the sealed cavity;
13) when the concentration of the contaminants in the sealed chamber is extremely low, the sealed chamber of the test equipment 10 can be opened and the test equipment can be arranged;
14) and (6) arranging the test data.
It should be noted that the above method steps are merely exemplary and step 6) may alternatively be accomplished by quantitatively releasing standard gas containing contaminants into the sealed chamber via the multi-functional sampling port 21 and/or 22 to quantitatively contaminate the ambient air therein.
In addition, when the concentration of the pollutants in the sealed chamber cannot be reduced to be extremely low through the step 12), alternatively or additionally, the multifunctional sampling port 21 and/or 22 can be connected with an external suction device through an air pipeline, and the regulation valve is opened to complete the recovery of the pollutants remained in the sealed chamber, so that the pollution to the external environment and the safety hazard to the user when the sealed chamber of the testing device 10 is opened after the test is finished are avoided.
It should be noted that although it is described in the above-described embodiment that the measurement module includes the air quality tester, the flow tester 81, the temperature tester, the humidity tester, and the pressure tester, it is understood that the tester that the measurement module may include is not limited thereto. When the test device is used specifically, the tester included in the test device can be increased or decreased according to different test requirements.
It should also be noted that, although in the above described embodiments the test device 10 was described as simulating the operating conditions on the recirculation line of the ventilation system in the cabin of a civil aircraft and thus testing the purification capacity of the air purification device 74 for the ventilation system of a civil aircraft, the use of the test device according to the invention is not limited to the simulation of the ventilation system of a civil aircraft, nor is its test object limited to the air purification device for the cabin ventilation system of a civil aircraft.
The present invention can freely combine the embodiments within the scope thereof, or appropriately modify or omit the embodiments.
Claims (10)
1. A test device (10) for testing the degree of purification of a polluting gas, characterized in that it comprises:
a sealed chamber, which has a fixed volume and contains ambient air and which is provided with a multifunctional sampling port (21, 22) on a side wall,
a contaminant introduction module for quantitatively contaminating ambient air in the sealed chamber to form quantitatively contaminated air;
a purification module disposed within the sealed chamber configured to purify contaminated air within the sealed chamber to form purified air and to discharge the purified air back into the sealed chamber to form purified ambient air gas;
a measurement module disposed at least partially within the sealed chamber for measuring a concentration of a contaminant remaining in the purified ambient air within the sealed chamber; and
a pressure regulation module comprising a regulating valve located outside the sealed chamber and a connecting line, the connecting line being arranged such that one end is connected to the multi-functional sampling port (21, 22) via the regulating valve and the other end is connectable to a pressure regulation device to regulate the pressure inside the sealed chamber to be less than atmospheric pressure.
2. The testing apparatus (10) of claim 1, wherein the contaminant introduction module is a contaminant generation module disposed in the sealed chamber and containing reagents for reacting to generate and quantitatively release the contaminants into the sealed chamber to form the quantitatively contaminated air.
3. The testing apparatus (10) of claim 1, wherein the contaminant introduction module is the multi-function sampling port (21, 22) and the quantitatively contaminated air is formed by quantitatively releasing a standard gas into the sealed chamber through the multi-function sampling port (21, 22).
4. The testing apparatus (10) of claim 2 or 3, wherein the purification module comprises an axial fan (71), an air conduit (72), an expanding air duct (73), and an air purification device (74), wherein the purification module is arranged such that the axial fan (71) introduces the amount of contaminated air within the sealed chamber into the air conduit (72), through the expanding air duct (73) to the air purification device (74), thereby purifying the amount of contaminated air and forming the purified air.
5. The testing apparatus (10) of claim 4, wherein the purge module is further configured to send the purged ambient air to the air purge device (74) for purging by means of the axial fan (71), the air conduit (72), and the expanding air duct (73) and form the purged air when a concentration of the remaining contaminants of the purged ambient air within the sealed chamber is greater than a predetermined threshold.
6. The test apparatus (10) of claim 4, wherein the measurement module comprises:
the pressure tester is arranged on the wall of the sealed chamber, is connected to the inside of the sealed chamber in a sealing mode through a connecting port and is used for detecting the pressure inside the sealed chamber; and
an air quality tester placed in the sealed chamber for performing the measurement of the concentration of the remaining contaminants in the purified ambient air in the sealed chamber and outside the purification module.
7. The test apparatus (10) of claim 6, wherein the measurement module further comprises:
a temperature tester disposed within the sealed chamber for measuring a temperature of the quantitatively contaminated air or purified ambient air within the sealed chamber and outside of the purification module;
a humidity tester disposed within the sealed chamber for measuring humidity of the quantitatively contaminated air or the purified ambient air within the sealed chamber and outside of the purification module; and
a flow tester (81) connected to the air conduit (72) for measuring flow within the air conduit (72) to assist in testing the degree of decontamination of the quantitatively contaminated air.
8. Test device (10) according to claim 7, characterized in that the front wall (4) of the sealed chamber is provided with at least one upper opening door (31, 32) for the user to prepare before the test starts, and that the upper opening door (31, 32) is provided with a sealing strip and a sealing catch.
9. Testing device (10) according to claim 8, characterized in that the front wall (4) is further provided with at least one glove opening (51, 52, 53, 54), which glove opening (51, 52, 53, 54) is sealingly connected with a glove towards the inner space of the sealed chamber.
10. The test device (10) according to claim 4, wherein the test device (10) is constructed of an inert material that is free of emissions of contaminants.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114062206A (en) * | 2021-10-29 | 2022-02-18 | 上海理工大学 | Multifunctional indoor thermal environment simulation experiment platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062206A (en) * | 2021-10-29 | 2022-02-18 | 上海理工大学 | Multifunctional indoor thermal environment simulation experiment platform |
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