CN101975728A - Device for testing diffusing rate of pollutants - Google Patents
Device for testing diffusing rate of pollutants Download PDFInfo
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- CN101975728A CN101975728A CN 201010264033 CN201010264033A CN101975728A CN 101975728 A CN101975728 A CN 101975728A CN 201010264033 CN201010264033 CN 201010264033 CN 201010264033 A CN201010264033 A CN 201010264033A CN 101975728 A CN101975728 A CN 101975728A
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Abstract
The invention relates to a device for testing the diffusing rate of pollutants. In the device for testing the diffusing rate of the pollutants, in a testing room provided with an air-conditioning system and a dehumidifier, an air outlet of a fan is connected with a static pressure box through a filter component and a humidifier; the static pressure box is provided with a plurality of air outlets; each air outlet is connected with a sealed testing box through an independent pipeline; a regulating valve and a conventional low-pressure flowmeter are arranged between the air outlets of the fan and the testing boxes; the testing boxes are connected with an adsorption tube through an air exhaust valve; and a pressure regulating valve is arranged on the static pressure box. The device can construct and test a plurality of small-sized testing units in a lab, can increase or decrease the number of the testing units according to actual requirements, and is flexible and convenient to regulate and control; the fan is used together with the static pressure box, so the application of the conventional fittings is guaranteed and the using flexibility and reliability are improved; and the acquisition and operation costs of equipment are obviously reduced. On the whole, the device is lower in cost and flexible in installation and use and is favorable for popularization and application on the premise of guaranteeing the conditions required by the test.
Description
Technical field
The test of the present invention relates to build, material pollutants such as sheet material, cementing agent, coating, carpet distributing in the field such as environment, health relates in particular to a kind of pollutant emission rate proving installation.
Background technology
In modern society, causing the source of room air pollution is that pollution source such as indoor decorating material have given out in environment for use and surpass the acceptable formaldehyde of indoor occupant, toluene, VOCs noxious pollutants such as (volatile organic matters).
Small-sized test chamber is to detect decorating and renovating materials such as artificial board, cementing agent, coating carpet near the ideal equipment of the pollutant emission under its actual application environment condition, utilize test chamber that sample of material is carried out certified products calibrating check, significant for room air pollution control.
The principle of work of test chamber is: it is extremely low that the sample of per surface area is put into target pollutant concentration to be detected, and temperature, relative humidity, air velocity and air displacement rate are controlled in the test chamber of certain value.Target contaminant to be detected discharges from sample, with air mixed in the case, regularly extracts air in the cabin, and the air of extracting out is passed through absorption tube, and the target contaminant that discharges in the sample is attracted pipe and absorbs; Measure the target contaminant in the absorption tube and the volume of air of extraction, thereby calculate the target pollutant concentration in every cubic metres of air.
Yet test chamber is researched and developed, is produced and use as a kind of independent proving installation in the market, all have temperature control equipment, humidity control apparatus, air purification processing equipment in the cabin body of each test chamber, directly be each test chamber supply flow air by unified air source during work, test chamber is put into sample test after with the air-treatment that enters again.Its deficiency has two:
The one, though owing to body own price in cabin in the test chamber is not high, but because temperature control equipment, humidity control apparatus, air purification processing equipment cost are higher, cause the expensive of whole test chamber, if desired a plurality of samples are detected simultaneously, can cause acquisition cost height, operating cost big, when especially the calibrating inspection task is big for facing in a laboratory, test chamber needs quantity many, for example 50～100 the time, acquisition cost will be grown up along with cabin body quantity is linear, and it is high to purchase the operating cost burden.Because at present domestic testing cost standard is generally not high, so the check unit is unwilling to make a big purchase in large quantities relevant device,, it is subjected to very big constraint thereby being applied, the method for testing that causes emission to test this science can not effectively be promoted;
The 2nd, the test chamber system can install a mass flowmeter additional usually with monitoring air velocity and air displacement rate between each test chamber and air source, the working pressure that mass flowmeter needs reaches the MPa level for the air pressure of passing through, be subjected to the restriction of mass flowmeter to working pressure, existing test chamber system generally can only adopt gas cylinder or utilize pressurized air that air compressor machine provides as air source, and its defective is: high-pressure air source is higher to the sealing property and the security requirement of connecting tube and external equipment; By a total source of the gas of high pressure simultaneously to the direct air feed of a plurality of test chambers, uneven air, the air-flow instability influences the test data accuracy; The price height of mass flowmeter under a fairly large number of situation in configuration testing cabin, laboratory, can further increase and purchase operating cost.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of can carry out the construction and the test of a plurality of small-sized test cells in a laboratory, and can use conventional accessory, significantly reduces the pollutant emission rate proving installation of equipment purchasing operating cost.
The present invention is achieved by the following technical solutions:
A kind of pollutant emission rate proving installation is characterized in that:
In having the test room of air-conditioning system and dehumidifier,
Fan outlet connects plenum chamber by filter assemblies, humidifier,
Plenum chamber is offered a plurality of air outlets, and each air outlet passes through the independently test box of a sealing of pipeline connection,
Configuration adjustment valve and conventional low pressure flow meter between fan outlet and the test box, test box connects absorption tube by exhaust valve,
Dispose pressure regulator valve on the plenum chamber.
The present invention has abandoned in the prior art thinking that temperature control equipment, humidity control apparatus, air purification processing equipment is integrated in the single test chamber, under a cover humiture disposal system, air purity disposal system, utilize blower fan that plenum chamber is blown, air carried out pre-treatment earlier to reach the requirement of test with air quality before entering plenum chamber: the air-conditioning system in the test room is controlled in the suitable scope indoor air temperature to guarantee the intake air temperature of blower fan; According to the concrete condition of indoor air humidity, can select for use dehumidifier or humidifier to guarantee air humidity; Filter assemblies filters out suspended particulate substance in the room air to guarantee the cleanliness factor in the test chamber, reduces in the wind pushing air target pollutant concentration to guarantee background concentration requirement in the test process.
Plenum chamber is actually a bigger seal case, and main effect is that the blower fan dynamic pressure is converted into static pressure, and mean allocation requires and the air quantity requirement with the blast pressure that guarantees a plurality of test boxs in parallel on plenum chamber to each air outlet again; Can offer a plurality of air outlets, a plurality of test boxs of arranging in pairs or groups flexibly on the plenum chamber as required, compare gas cylinder and compressor, the pressure in the plenum chamber is lower, thereby has reduced the requirement for system unit, has guaranteed the use of conventional accessory.
The conventional low pressure flow meter of configuration is with the monitoring air mass flow between plenum chamber and the test box.Contrast in the present test chamber mass flowmeter that generally uses, conventional low pressure flow meter is more suitable in using under relatively low air pressure, and simple in structure, cheap.Conventional low pressure flow meter can be selected suspended body flowmeter, nozzle flowmeter or orifice flowmeter etc. for use.
The variable valve that disposes between test box and the plenum chamber, variable valve are equivalent to the switch of test box, just open corresponding variable valve when need using which test box, simultaneously, adjust the aperture of variable valve, play the purpose of fine setting flowmeter flow.
Test box is a small-sized seal case, mainly be to provide the simulated air environment for testing sample, regular extracting air and component wherein measured from test box just can be extrapolated its quality that is dispersed into target contaminant in the air within a certain period of time and concentration.
The atmospheric pressure value that adjustment exhaust valve aperture can be adjusted in the test box reaches setup parameter, and the configuration pressure regulator valve is to adjust the plenum chamber internal pressure on the plenum chamber.
Further, for the filter effect that guarantees filter assemblies, prolong its serviceable life, filter assemblies be preferably in sequential series just, middle effect particulate filter, chemical filter and high efficiency particulate air filter.Wherein:
Just, middle effect particulate filter mainly is to utilize the big suspended particulate substance of particle diameter in the fibrous material filtered air that interweaves in a jumble;
Chemical filter mainly is to utilize the activated charcoal mixed chemical reagent selectively to adsorb or reduce airborne target contaminant, according to detecting needs, chemical filter generally comprises one or more in Jia Chuo filtrator, toluene filtrator and the volatile organic matter filtrator at present.It is example that the pollutant that need detect with testing sample is Jia Chuo and/or toluene, and this moment, chemical filter should corresponding employing Jia Chuo and/or toluene chemical filter filtered air, makes the concentration of the Kong gas Zhong Jia Chuo that passes through and/or toluene extremely low, generally at 10～20 μ g/m
3, avoid intrinsic De Jia Chuo and/or the final test data of toluene level influence in the air;
High-efficiency particulate structure of filter and first, middle effect particulate filter are similar, are mainly used in to remove particle diameter smaller particles thing in the air.
Chemical filter generally is configured in high-efficiency particulate filtrator upstream, thereby the particle that produces after avoiding air by chemical filter enters in the test box.
This device utilizes a cover humiture disposal system, the unified regulation and control of air purity disposal system air feed, adopts the supply gas pressure of suspended body flowmeter monitoring relatively low pressure, the test box quantity that disposes in a laboratory is many more, the effect of this device aspect reduction equipment purchasing operating cost is just obvious more, in general, when the test box quantity that connects on the plenum chamber is 10, the cost of package unit can reduce more than 70%, and effect is very obvious.
Beneficial effect of the present invention is:
1, this device can carry out the construction and the test of a plurality of small-sized test cells in a laboratory, can increase and decrease the quantity of test cell according to actual needs, regulates and control more flexible;
2, being used of blower fan and plenum chamber makes the use of conventional accessory in test macro become possibility, guaranteed dirigibility and reliability that conventional low pressure flow meter uses;
3, utilize the air feed of a cover humiture disposal system, a plurality of test cells of the unified regulation and control of air purity disposal system simultaneously, adopt conventional low pressure flow meter monitoring flow, significantly reduced equipment purchasing operating cost;
Guaranteeing under the test request condition generally that 4, cost is lower, install and use flexibly, more helping applying.
Description of drawings
Fig. 1 is the connection diagram of existing pollutant emission rate proving installation
Fig. 2 is the connection diagram of pollutant emission rate proving installation of the present invention
Fig. 3 is a kind of preferred filter assemblies connectivity scenario
Fig. 1～3:1 is a blower fan, and 2 is filter assemblies, and 2-1 is first, middle effect particulate filter, and 2-2 is a chemical filter, 2-3 is a high efficiency particulate air filter, and 3 is humidifier, and 4 is plenum chamber, 5 is pressure regulator valve, and 6 is variable valve, and 7 is conventional low pressure flow meter, 8 is test box, and 9 is exhaust valve, and 10 is air-conditioning system, 11 is high-pressure air source, and 12 is mass flowmeter, and 13 is dehumidifier, 14 is the integrated form test chamber, and 14-1 is the air-treatment assembly, and 15 is absorption tube.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Among Fig. 1, the high-pressure air source 11 that existing pollutant emission rate proving installation provides with gas cylinder or air compressor machine as air source, directly be that integrated form test chamber 14 provides air, a mass flowmeter 12 is housed between each integrated form test chamber 14 and the high-pressure air source, and the air pre-treatment thinking of existing apparatus is separately air in the cabin to be carried out temperature, humidity regulation and air purification respectively by the air-treatment assembly 14-1 in the integrated form test chamber 14 to handle.
The principle of work of test chamber is: it is extremely low that the sample of per surface area is put into target pollutant concentration to be detected, temperature, relative humidity, air velocity and air displacement rate are controlled in the integrated form test chamber 14 of certain value, target contaminant to be detected discharges from sample, with air mixed in the cabin, regularly extract air in the cabin, the air of extracting out is passed through absorption tube 15, and the target contaminant that discharges in the sample is absorbed pipe 15 and absorbs; Measure the target contaminant in the absorption tube 15 and the volume of air of extraction, thereby calculate the target pollutant concentration in every cubic metres of air.
Owing to used mass flowmeter, high-pressure air source 11, whole device is higher to the sealing property and the security requirement of connecting tube and external equipment; By high-pressure air source 11 air feed, especially use gas cylinder, air output is subjected to certain limitation; The price height of mass flowmeter 12, air-treatment assembly 14-1 under a fairly large number of situation in configuration testing cabin, laboratory, can further increase and purchase operating cost.
Among Fig. 2, in the test room that has air-conditioning system 10 and dehumidifier 13, blower fan 1 air outlet connects plenum chamber 4 by filter assemblies 2, humidifier 3, plenum chamber 4 is offered a plurality of air outlets, each air outlet passes through the independently test box 8 of a sealing of pipeline connection, configuration adjustment valve 6 and conventional low pressure flow meter 7 between blower fan 1 air outlet and the test box 8, test box 8 connects absorption tube 15 by exhaust valve 9, configuration pressure regulator valve 5 on the plenum chamber 4.
Among Fig. 3, filter assemblies 2 comprises first, middle effect particulate filter 2-1 in sequential series, and chemical filter 2-2 and high efficiency particulate air filter 2-3, chemical filter 2-2 comprise one or more in Jia Chuo filtrator, toluene filtrator and the volatile organic matter filtrator.
The step of utilizing the present invention that the pollutant emission rate is tested is as follows:
(1), adjust air-conditioning system 10, according to season situation select to regulate whether regulate dehumidifier 13, room temperature, humidity are handled claimed condition;
(2), open variable valve 6, exhaust valve 9;
(3), start blower fan 1, make plenum chamber 4 internal pressures reach setup parameter by variable frequency adjustment;
(4), regulate humidifier 3 and make wind pushing air humidity reach requirement,
(5), regulate variable valve 6, make the flow of conventional low pressure flow meter 7 reach setup parameter;
(6), regulate exhaust valve 9, make 8 casees internal pressures of test box reach setup parameter;
(7), put into test member in the test box 8 casees;
(8), begin test.
According to experiment, utilize this device to carry out the test of pollutant emission rate, all reached ASTM D 5116 standard-requireds, compare the existing market price simultaneously, have the whole system cost savings 80% of 13 test boxs 8.
Claims (5)
1. pollutant emission rate proving installation is characterized in that:
In the test room that has air-conditioning system (10) and dehumidifier (13),
Blower fan (1) air outlet connects plenum chamber (4) by filter assemblies (2), humidifier (3),
Plenum chamber (4) is offered a plurality of air outlets, and each air outlet passes through the independently test box (8) of a sealing of pipeline connection,
Configuration adjustment valve (6) and conventional low pressure flow meter (7) between blower fan (1) air outlet and the test box (8), test box (8) connects absorption tube (15) by exhaust valve (9),
Plenum chamber (4) is gone up configuration pressure regulator valve (5).
2. pollutant emission rate proving installation according to claim 1 is characterized in that: described filter assemblies (2) comprises first, middle effect particulate filter (2-1), chemical filter (2-2) and high efficiency particulate air filter (2-3) in sequential series.
3. pollutant emission rate proving installation according to claim 2 is characterized in that: described chemical filter (2-2) comprises one or more in Jia Chuo filtrator, toluene filtrator and the volatile organic matter filtrator.
4. pollutant emission rate proving installation according to claim 1 is characterized in that: it is 10～100 that described plenum chamber (4) is gone up test box (8) quantity that connects.
5. pollutant emission rate proving installation according to claim 1 is characterized in that: described conventional low pressure flow meter (7) is suspended body flowmeter, nozzle flowmeter or orifice flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010264033 CN101975728A (en) | 2010-08-24 | 2010-08-24 | Device for testing diffusing rate of pollutants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010264033 CN101975728A (en) | 2010-08-24 | 2010-08-24 | Device for testing diffusing rate of pollutants |
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| Publication Number | Publication Date |
|---|---|
| CN101975728A true CN101975728A (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010264033 Pending CN101975728A (en) | 2010-08-24 | 2010-08-24 | Device for testing diffusing rate of pollutants |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402655A (en) * | 2016-10-25 | 2017-02-15 | 苏州曼德克光电有限公司 | Draught fan protector of air-supply system |
| CN108918607A (en) * | 2018-05-15 | 2018-11-30 | 天津大学 | A kind of monitoring device on the spot of indoor building materials surface contamination gas emission intensity |
| CN113237806A (en) * | 2021-07-12 | 2021-08-10 | 韦氏（苏州）医疗科技有限公司 | Medical environment logistics support monitoring system |
Citations (3)
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| CN2146852Y (en) * | 1993-03-01 | 1993-11-24 | 杨宝龙 | Clean raising cupboard for experiment animals |
| CN2357250Y (en) * | 1999-01-22 | 2000-01-05 | 唐继跃 | Changeable air quantity multi-way outlet silencing static pressure box |
| CN201780250U (en) * | 2010-08-24 | 2011-03-30 | 上海市建筑科学研究院(集团)有限公司 | System for testing pollution emission rate of pollution source |
-
2010
- 2010-08-24 CN CN 201010264033 patent/CN101975728A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2146852Y (en) * | 1993-03-01 | 1993-11-24 | 杨宝龙 | Clean raising cupboard for experiment animals |
| CN2357250Y (en) * | 1999-01-22 | 2000-01-05 | 唐继跃 | Changeable air quantity multi-way outlet silencing static pressure box |
| CN201780250U (en) * | 2010-08-24 | 2011-03-30 | 上海市建筑科学研究院(集团)有限公司 | System for testing pollution emission rate of pollution source |
Non-Patent Citations (1)
| Title |
|---|
| 《建筑材料学报》 20050228 石克虎等 木质人造板材中甲醛释放特征的研究 第47-48页 1-5 第8卷, 第1期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402655A (en) * | 2016-10-25 | 2017-02-15 | 苏州曼德克光电有限公司 | Draught fan protector of air-supply system |
| CN108918607A (en) * | 2018-05-15 | 2018-11-30 | 天津大学 | A kind of monitoring device on the spot of indoor building materials surface contamination gas emission intensity |
| CN108918607B (en) * | 2018-05-15 | 2020-07-10 | 天津大学 | On-site monitoring device for emission intensity of pollution gas on indoor material surface |
| CN113237806A (en) * | 2021-07-12 | 2021-08-10 | 韦氏（苏州）医疗科技有限公司 | Medical environment logistics support monitoring system |
| CN113237806B (en) * | 2021-07-12 | 2021-09-07 | 韦氏（苏州）医疗科技有限公司 | Medical environment logistics support monitoring system |
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Application publication date: 20110216 |