CN103439465B - A kind of burst size of methanal analytic approach detection system and detection method thereof - Google Patents

A kind of burst size of methanal analytic approach detection system and detection method thereof Download PDF

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CN103439465B
CN103439465B CN201310384561.1A CN201310384561A CN103439465B CN 103439465 B CN103439465 B CN 103439465B CN 201310384561 A CN201310384561 A CN 201310384561A CN 103439465 B CN103439465 B CN 103439465B
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air
methanal
burst size
measured piece
analytic approach
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CN103439465A (en
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曹季
陶泽成
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Kunshan Innovation Testing Instruments Co Ltd
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Kunshan Innovation Testing Instruments Co Ltd
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Abstract

The invention discloses a kind of burst size of methanal analytic approach detection system, for detecting the burst size of methanal of measured piece, comprise air flow through successively and be communicated with the pneumatic pump of setting, air pretreatment device, measured piece detection cabin body, air sampling equipment and air analysis equipment successively, described air sampling equipment comprises multiple absorption bottle, and described multiple absorption bottle connects described measured piece by multiple solenoid valve correspondence and detects cabin body; Described multiple solenoid valve opens or cuts out interval time.The present invention carries out pre-service by air to external world, the impact of extraneous factor on testing result can be reduced, by arranging multiple absorption bottle, and open an absorption bottle at set intervals, each absorption bottle absorbs the air containing different content of formaldehyde, thus draw the relation curve of the burst size of methanal of measured piece and the burst size of methanal of measured piece and release time, thus the burst size of methanal of more effective analysis measured piece.The invention also discloses a kind of burst size of methanal analytic approach detection method.

Description

A kind of burst size of methanal analytic approach detection system and detection method thereof
Technical field
The present invention relates to a kind of burst size of methanal analytic approach detection system, particularly relate to a kind of burst size of methanal analytic approach detection method.
Background technology
Along with the development of society, people start progressively to start to focus on environmental protection, burst size of methanal pay attention to day by day for furniture or sheet material gets up, therefore in succession there is extraction, condensed steam water and climate box method etc. detect furniture, and wherein, extraction is simple, easy to operate, but testing result can not directly reaction formaldehyde burst size to the pollution of environment; Condensed steam water adopts titrimetry when demarcating formaldehyde, but the method measuring accuracy is low, and test specification is narrow; The maximum advantage of climate box method is can precision analog to actual environment, and the method can be tested accurately to the burst size of methanal of furniture or sheet material, but this equipment volume is large, and cost is high, and test period is long, runs counter to country to the demand of saving energy and reduce the cost.
Summary of the invention
Object of the present invention be just to provide a kind of more effectively, more accurately detect the burst size of methanal analytic approach detection system of the burst size of methanal in measured piece.
For solving the problem, the invention provides a kind of burst size of methanal analytic approach detection system, for detecting the burst size of methanal in measured piece, comprise air flow through successively and be communicated with the pneumatic pump of setting, air pretreatment device, measured piece detection cabin body, air sampling equipment and air analysis equipment successively, described air sampling equipment comprises multiple absorption bottle, and described multiple absorption bottle connects described measured piece by multiple solenoid valve correspondence and detects cabin body; Described multiple solenoid valve opens or cuts out interval time.
Preferably, described air pretreatment device comprises air filtration combination three linked piece, U-shaped drying tube and register, and described register comprises temperature adjustment water tank and is arranged at described temperature adjustment water tank hollow gas copper pipe with bending; Described pneumatic pump, air filtration combination three linked piece, U-shaped drying tube, air copper pipe and measured piece detect cabin body and are communicated with setting successively.
Preferably, described burst size of methanal analytic approach detection system also comprises control device, and described control device comprises control module, and described control module is electrically connected described pneumatic pump and solenoid valve.
Preferably, described control device also comprises temperature sensor, pressure transducer and flowmeter, and described temperature sensor and pressure transducer are arranged at described measured piece and detect on the body inwall of cabin; Described flowmeter is arranged between described U-shaped drying tube and described air copper pipe; Described temperature sensor, pressure transducer and flowmeter are electrically connected described control module, and described control module is electrically connected described air filtration combination three linked piece, temperature adjustment water tank and pneumatic pump.
Preferably, described control device also comprises display unit, and described display unit is electrically connected described control module.
Preferably, the outside that described measured piece detects cabin body is also provided with heat conduction cavity, and described heat conduction cavity is communicated with described temperature adjustment water tank and arranges.
Preferably, described tested detection cabin body is also provided with steam inlet, and described steam inlet is communicated with described temperature adjustment water tank.
Preferably, the outside of described heat conduction cavity is also provided with polyurethane heat insulation material layer.
Preferably, described burst size of methanal analytic approach detection system also comprises external casing, and described external casing is provided with universal caster wheel; Described burst size of methanal analytic approach detection system is built in described external casing.
The present invention also provides another one technical scheme: a kind of burst size of methanal analytic approach detection method, adopts burst size of methanal analytic approach detection system as above, comprises the steps:
(1) accept air, receive outside air by described pneumatic pump;
(2) air pretreatment, respectively by described air filtration combination three linked piece, U-shaped drying tube and temperature adjustment water tank, drainage, oil strain, decompression, dehumidifying and temperature adjustment are carried out to described outside air, formation temperature is 50-60 DEG C, and pressure is the pure air of 1000Pa-1200Pa;
(3) gather pure air, described pure air is passed into described measured piece and detect cabin body, and gather described pure air by multiple described absorption bottle;
(4) measured piece release formaldehyde, puts into described measured piece and detects cabin body by described measured piece of stating and make its Spontaneous release formaldehyde gas, form the air containing formaldehyde;
(5) gather the air containing formaldehyde, open the solenoid valve that the absorption bottle of the remainder in multiple described absorption bottle is corresponding interval time, make the described air containing formaldehyde be collected in the absorption bottle of described remainder;
(6) analyze the burst size of methanal of measured piece, by pure air described in described air analysis device analysis and the described content of formaldehyde containing the air of formaldehyde, form burst size of methanal curve map.
The beneficial effect of this technical scheme is adopted to be, the present invention by arrange air pretreatment device to external world air carry out pre-service, the impact of extraneous factor on testing result can be reduced, by arranging multiple absorption bottle, and open an absorption bottle at set intervals, each absorption bottle absorbs the air containing different content of formaldehyde, thus draws the relation curve of the burst size of methanal of measured piece and the burst size of methanal of measured piece and release time, thus the burst size of methanal of more effective analysis measured piece.
Accompanying drawing explanation
Fig. 1 is the front elevation of a kind of burst size of methanal analytic approach of the present invention detection system embodiment 1;
Fig. 2 is the right view of the burst size of methanal analytic approach detection system embodiment 1 of a kind of furniture of the present invention or sheet material;
Fig. 3 is the left view of the burst size of methanal analytic approach detection system embodiment 1 of a kind of furniture of the present invention or sheet material;
Fig. 4 is the front elevation of a kind of burst size of methanal analytic approach of the present invention detection system embodiment 2;
Fig. 5 is the right view of the burst size of methanal analytic approach detection system embodiment 2 of a kind of furniture of the present invention or sheet material;
Fig. 6 is the left view of the burst size of methanal analytic approach detection system embodiment 2 of a kind of furniture of the present invention or sheet material;
Fig. 7 is the left view of the burst size of methanal analytic approach detection system embodiment 3 of a kind of furniture of the present invention or sheet material;
Fig. 8 is the left view of the burst size of methanal analytic approach detection system embodiment 4 of a kind of furniture of the present invention or sheet material.
Wherein, 1. pneumatic pump 21. air filtration combination three linked piece 211. air filtration combination three linked piece entrance 212. air filtration combination three linked piece outlet 22.U shape drying tube 221.U shape drying tube entrance 222.U shape drying tube exports 23. air copper pipe 231. air copper pipe entrance 232. copper pipes and exports 24. temperature adjustment water tank 241. temperature adjustment water tank hot water inlet 242. temperature adjustment tank hot water outlet 2421. heat-exchanger pump 3. measured pieces and detect cabin body 31. measured pieces and detect cabin body entrance 32. measured pieces and detect cabin bodies and export external casing 71. universal caster wheel of 33. heat conduction cavity 331. thermal conductive cavity body heat water inlet 332. thermal conductive cavity body heat water out 34. polyurethane heat insulation material layer 4. absorption bottle 5. solenoid valve 611. temperature sensor 612. pressure transducer 613. flowmeter 62. control module 621. start button 622. stop button 623. power knob 63. display unit 7..
Embodiment
A preferred embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
See Fig. 1-Fig. 3, as shown in legend wherein, a kind of burst size of methanal analytic approach detection system, for detecting the burst size of methanal in measured piece, comprise air flow through successively and be communicated with pneumatic pump 1, air pretreatment device of setting, measured piece detection cabin body 3, air sampling equipment and an air analysis equipment (not shown) successively, above-mentioned air sampling equipment comprises eight absorption bottles 4, and these eight absorption bottles 4 connect measured piece by eight solenoid valve 5 correspondences and detect cabin body 3; Eight solenoid valves 5 are opened at interval successively for one hour successively.
Above-mentioned air pretreatment device comprises dry 22 pipe and the registers of air filtration combination three linked piece 21, U-shaped, and above-mentioned register comprises a temperature adjustment water tank 24 and is arranged at an air copper pipe 23 in temperature adjustment water tank 24 with bending; Pneumatic pump 1, air filtration combination three linked piece 21, U-shaped drying tube 22, air copper pipe 23 and measured piece detect cabin body 3 and are communicated with setting successively.
Air filtration combination three linked piece 21 has an air filtration combination three linked piece entrance 211 and air filtration combination three linked piece outlet 212; Air filtration combination three linked piece entrance 211 is communicated with pneumatic pump 1;
U-shaped drying tube 22 has a U-shaped drying tube entrance 221 and U-shaped drying tube outlet 222, and U-shaped drying tube entrance 221 is communicated with air filtration combination three linked piece outlet 212;
Air copper pipe 23 has an air copper pipe entrance 231 and air copper pipe outlet 232, and air copper pipe entrance 231 is communicated with U-shaped drying tube outlet 222;
Measured piece detects cabin body 3 and has measured piece detection cabin body entrance 31 and a measured piece detection cabin body outlet 32, and measured piece detects cabin body entrance 31 and is communicated with air copper pipe outlet 232, and measured piece detection cabin body exports 32 and is communicated with absorption bottle 4 by solenoid valve 5.
Further, above-mentioned burst size of methanal analytic approach detection system also comprises an external casing 7, and external casing 7 has universal caster wheel 71; Above-mentioned burst size of methanal analytic approach detection system is built in external casing 7.
A burst size of methanal analytic approach detection method below, adopts above-mentioned burst size of methanal analytic approach detection system, comprises the steps:
(1) accept air, receive outside air by pneumatic pump 1;
(2) air pretreatment, respectively by air filtration combination three linked piece 21, U-shaped drying tube 22 and temperature adjustment water tank 24, drainage, oil strain, decompression, dehumidifying and temperature adjustment are carried out to above-mentioned outside air, formation temperature is 50-60 DEG C, and pressure is the pure air of 1000Pa-1200Pa;
(3) gather pure air, above-mentioned pure air is passed into measured piece and detect cabin body 3, and gather above-mentioned pure air by eight absorption bottles 4;
(4) measured piece release formaldehyde, puts into measured piece detection cabin body 3 and makes its Spontaneous release formaldehyde gas, form the air containing formaldehyde by measured piece;
(5) gather the air containing formaldehyde, open the solenoid valve of seven remaining absorption bottle 4 correspondences every a little time successively, make the above-mentioned air containing formaldehyde be collected in seven remaining absorption bottles;
(6) analyze the burst size of methanal of measured piece, by the above-mentioned pure air of above-mentioned air analysis device analysis and the above-mentioned content of formaldehyde containing the air of formaldehyde, form burst size of methanal curve map.
Embodiment 2
See Fig. 4-Fig. 6, as shown in legend wherein, all the other are identical with described embodiment 1, difference is, above-mentioned burst size of methanal analytic approach detection system also comprises a control device, and above-mentioned control device of stating comprises a control module 62, and control module 62 is provided with start button 621, stop button 622 and a power knob 633, and control the startup of pneumatic pump 1 and stopping and power supply, control module 62 is gone back Controlling solenoid valve 5 and is opened and closed by certain programmable interval time.
Further, above-mentioned control device also comprises the temperature sensor 611 and a pressure transducer 612 that are arranged at measured piece detection cabin body 3 inwall and the flowmeter 613 being arranged at U-shaped drying tube outlet 222, temperature sensor 611, pressure transducer 612 and flowmeter 613 are electrically connected control module 62, and control module 62 is electrically connected air filtration combination three linked piece 21, temperature adjustment water tank 24 and pneumatic pump 1.
The signal that control module 62 is detected by temperature sensor 611, pressure transducer 612 i.e. flowmeter 613, controls reply air filtration combination three linked piece 21, temperature adjustment water tank 24 and pneumatic pump.
Further, above-mentioned control device also comprises a display unit 63, and display unit 63 is electrically connected control module 62.
Can every data of PARA FORMALDEHYDE PRILLS(91,95) burst size detection system more intuitively monitor.
Embodiment 3
See Fig. 7, as shown in legend wherein, all the other are identical with described embodiment 1, and difference is, the outside that measured piece detects cabin body 3 is also provided with heat conduction cavity 33;
Temperature adjustment tank outlet 24 has a tempered water tank inlet 241 and a temperature adjustment tank outlet 242;
Heat conduction cavity 33 has heat conduction chamber inlet 331 and a heat conduction cavity outlet 332, and heat conduction chamber inlet 331 and temperature adjustment tank outlet 242 are communicated with by heat-exchanger pump 2421 and arrange.
Temperature adjustment water tank 24 not only can heat the air flowed through, and can heat the outside that measured piece detects cabin body 3.
Embodiment 4
See Fig. 8, as shown in legend wherein, all the other are identical with described embodiment 1, and difference is, the outside of heat conduction cavity 33 is also provided with a polyurethane heat insulation material layer 34.
Measured piece can be made to detect cabin body 3 there is better temperature persistance.
The beneficial effect of this technical scheme is adopted to be, the present invention by arrange air pretreatment device to external world air carry out pre-service, the impact of extraneous factor on testing result can be reduced, by arranging multiple absorption bottle, and open an absorption bottle at set intervals, each absorption bottle absorbs the air containing different content of formaldehyde, thus draws the relation curve of the burst size of methanal of measured piece and the burst size of methanal of measured piece and release time, thus the burst size of methanal of more effective analysis measured piece.
The above is only the preferred embodiment of the present invention, it should be pointed out that without departing from the concept of the premise of the invention, and can also make some distortion and improvement, these all belong to protection scope of the present invention.

Claims (7)

1. a burst size of methanal analytic approach detection system, for detecting the burst size of methanal of measured piece, it is characterized in that, comprise air flow through successively and be communicated with the pneumatic pump of setting, air pretreatment device, measured piece detection cabin body, air sampling equipment and air analysis equipment successively, described air sampling equipment comprises multiple absorption bottle, and described multiple absorption bottle connects described measured piece by multiple solenoid valve correspondence and detects cabin body; Described multiple solenoid valve opens or cuts out interval time,
Described air pretreatment device comprises air filtration combination three linked piece, U-shaped drying tube and register, and described register comprises temperature adjustment water tank and is arranged at described temperature adjustment water tank hollow gas copper pipe with bending; Described pneumatic pump, air filtration combination three linked piece, U-shaped drying tube, air copper pipe and measured piece detect cabin body and are communicated with setting successively, the outside that described measured piece detects cabin body is also provided with heat conduction cavity, described heat conduction cavity is communicated with described temperature adjustment water tank and arranges, and described air copper pipe to be also arranged in described heat conduction cavity and to detect cabin body with measured piece and is communicated with.
2. burst size of methanal analytic approach detection system according to claim 1, it is characterized in that, described burst size of methanal analytic approach detection system also comprises control device, and described control device comprises control module, and described control module is electrically connected described pneumatic pump and solenoid valve.
3. burst size of methanal analytic approach detection system according to claim 2, it is characterized in that, described control device also comprises temperature sensor, pressure transducer and flowmeter, and described temperature sensor and pressure transducer are arranged at described measured piece and detect on the body inwall of cabin; Described flowmeter is arranged between described U-shaped drying tube and described air copper pipe; Described temperature sensor, pressure transducer and flowmeter are electrically connected described control module, and described control module is electrically connected described air filtration combination three linked piece, temperature adjustment water tank and pneumatic pump.
4. burst size of methanal analytic approach detection system according to claim 3, it is characterized in that, described control device also comprises display unit, and described display unit is electrically connected described control module.
5. burst size of methanal analytic approach detection system according to claim 1, is characterized in that, the outside of described heat conduction cavity is also provided with polyurethane heat insulation material layer.
6., according to the arbitrary described burst size of methanal analytic approach detection system of claim 1-5, it is characterized in that, described burst size of methanal analytic approach detection system also comprises external casing, and described external casing is provided with universal caster wheel; Described burst size of methanal analytic approach detection system is built in described external casing.
7. a burst size of methanal analytic approach detection method for furniture or sheet material, is characterized in that, adopts burst size of methanal analytic approach detection system as claimed in claim 2, comprises the steps:
(1) accept air, receive outside air by described pneumatic pump;
(2) air pretreatment, respectively by described air filtration combination three linked piece, U-shaped drying tube and temperature adjustment water tank, drainage, oil strain, decompression, dehumidifying and temperature adjustment are carried out to described outside air, formation temperature is 50-60 DEG C, and pressure is the pure air of 1000Pa-1200Pa;
(3) gather pure air, described pure air is passed into described measured piece and detect cabin body, and gather described pure air by multiple described absorption bottle;
(4) measured piece release formaldehyde, puts into described measured piece detection cabin body and makes its Spontaneous release formaldehyde gas, form the air containing formaldehyde by described measured piece;
(5) gather the air containing formaldehyde, open the solenoid valve that the absorption bottle of the remainder in multiple described absorption bottle is corresponding interval time, make the described air containing formaldehyde be collected in the absorption bottle of described remainder;
(6) analyze the burst size of methanal of measured piece, by pure air described in described air analysis device analysis and the described content of formaldehyde containing the air of formaldehyde, form burst size of methanal curve map.
CN201310384561.1A 2013-08-30 2013-08-30 A kind of burst size of methanal analytic approach detection system and detection method thereof Active CN103439465B (en)

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Publication number Priority date Publication date Assignee Title
CN108375622B (en) * 2018-02-27 2019-07-23 英特尔产品(成都)有限公司 Fluid analysis apparatus and system
CN111948207B (en) * 2020-08-13 2023-10-17 东至县森茂炭业有限公司 Decoration indoor air formaldehyde detection device
CN112697496B (en) * 2021-03-24 2021-07-06 青岛华谊优品智能家具股份有限公司 Furniture board formaldehyde detection device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216484A (en) * 2007-12-28 2008-07-09 周玉成 Artificial board formaldehyde burst size detection system
JP2008232796A (en) * 2007-03-20 2008-10-02 Nippon Telegr & Teleph Corp <Ntt> Formaldehyde detection element
CN201210136Y (en) * 2008-06-06 2009-03-18 广东出入境检验检疫局检验检疫技术中心 Fast detection apparatus for formaldehyde release amount
CN201811956U (en) * 2010-10-21 2011-04-27 上海科绿特环境科技有限公司 Artificial board formaldehyde release tester by catharometry
CN203443949U (en) * 2013-08-30 2014-02-19 昆山市创新科技检测仪器有限公司 System for detecting formaldehyde emission amount with analytical method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008232796A (en) * 2007-03-20 2008-10-02 Nippon Telegr & Teleph Corp <Ntt> Formaldehyde detection element
CN101216484A (en) * 2007-12-28 2008-07-09 周玉成 Artificial board formaldehyde burst size detection system
CN201210136Y (en) * 2008-06-06 2009-03-18 广东出入境检验检疫局检验检疫技术中心 Fast detection apparatus for formaldehyde release amount
CN201811956U (en) * 2010-10-21 2011-04-27 上海科绿特环境科技有限公司 Artificial board formaldehyde release tester by catharometry
CN203443949U (en) * 2013-08-30 2014-02-19 昆山市创新科技检测仪器有限公司 System for detecting formaldehyde emission amount with analytical method

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