CN102374940A - VOC (Volatile Organic Compound) sampling device - Google Patents
VOC (Volatile Organic Compound) sampling device Download PDFInfo
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- CN102374940A CN102374940A CN2011102740806A CN201110274080A CN102374940A CN 102374940 A CN102374940 A CN 102374940A CN 2011102740806 A CN2011102740806 A CN 2011102740806A CN 201110274080 A CN201110274080 A CN 201110274080A CN 102374940 A CN102374940 A CN 102374940A
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Abstract
The invention discloses a VOC (Volatile Organic Compound) sampling device, which can be used for collecting volatile gases on the surfaces of various venues. In the VOC sampling device, one face of a box body is provided with an opening; a gas storing bag of which one face is provided with an opening is arranged in the box body; the opening of the gas storing bag is connected to the opening of the box body, and is provided with a sealing ring; the box body can be covered on the surface of an object to be detected; the sealing ring is combined with the surface of the object to be detected; the gas storing bag is sealed with the surface of the object to be detected to form a sealed gas storing space; and at least one gas valve is arranged on the box body, and is connected with a gas guide pipe which is used for communicating the gas storing space with the outside. The VOC sampling device disclosed by the invention can be carried to a sampling venue to be sampled by an operator for performing field sampling on the surface of an object to be detected, so that the defect of damage of the conventional volatile gas sampling device on the object to be detected is overcome.
Description
Technical field
The present invention relates to a kind of gas collecting device, particularly a kind of VOC sampling apparatus that is applicable to spot sampling in various venues.
Background technology
In test items such as gas composition analysis, smell test, at first need carry out gas sampling.For example, in VOC (volatile organic matter) test, normally used a kind of method is determinand to be cut be suitable size; Pack in the Tedlar gas sampling bag; Put into baking oven, the temperature baking a period of time with suitable, the VOC in the determinand is evaporate in the sack; Extract the gas in the sack then, process machine test on the sample.
This method belongs to and diminishes detection, need determinand be destroyed, and the product that is used for general batch process is suitable, but just powerless for the determinand that can not destroy.For example, synthetic court in the stadiums is carried out VOC detect, must be under the prerequisite of not destroying the place, the volatile organic matter of field ground surface is carried out collection in worksite.
Summary of the invention
The present invention for solve the technical matters that exists in the known technology provide a kind of can be in various venues the VOC sampling apparatus of spot sampling.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology is:
A kind of VOC sampling apparatus is a uncovered casing; The gas-storing bag 6 of an opening is arranged in the said casing 1, and the opening part of gas-storing bag 6 is connected the opening part of casing 1; The opening part of said gas-storing bag 6 has O-ring seal 4; Said casing 1 can cover on the determinand surface, and O-ring seal 4 and determinand surface combination make gas-storing bag 6 form the gas storage space 5 of a sealing with determinand surface closure; Said VOC sampling apparatus has air cleaning unit, with gas storage space UNICOM; Said VOC sampling apparatus has heating arrangement.
Insulation material is arranged in the cabinet wall.
The opening part of casing 1 is provided with a plurality of seal grooves, and a plurality of O-ring seals can be installed.
O-ring seal is removable.
Heating arrangement (7) is mounted in the infrared heater in the casing, places outside the gas storage space (5), and the direction of irradiation is the direction towards casing (1) opening.
Heating arrangement is a resistance type heater.
Heating arrangement is a microwave applicator
The VOC sampling apparatus has vacuum absorption device (8), and this device can be fixed in the VOC sampling apparatus on the surface of determinand.
The VOC sampling apparatus has temperature control module, and said temperature control module comprises temperature sensor, controller, and sensor is positioned in determinand surface and the casing.
VOC sampling apparatus according to claim 9; It is characterized in that: the temperature of said VOC sampling apparatus is by the procedure auto-control of temperature control module; That is, compare by the temperature and the preset temperature of program, according to result relatively to the temperature inductor feedback; The switch or the watt level of control heating arrangement remain near the preset temperature with making the interior temperature stabilization of sampling apparatus.
Use VOC sampling apparatus provided by the invention, can carry out the harmless sampling in scene of VOC, avoided the destruction of traditional VOC sampling process determinand to determinand large-scale, that can not destroy.Carry the VOC sampling apparatus to venue to be sampled by operating personnel, sampling apparatus is covered on the surface of determinand, form seal cavity, wait the VOC of determinand slowly to get into gas storage space, take out test and get final product.Heating arrangement can be accelerated the speed that VOC evaporates from determinand.Have being fixed on the different surface that the VOC sampling apparatus of vacuum absorption device can be convenient, and when sampling, have better sealing.
Description of drawings
Fig. 1 is a cross-sectional view of using a kind of VOC sampling apparatus of the present invention;
Fig. 2 is the synoptic diagram directly perceived that has the VOC sampling apparatus of vacuum absorption device.
Mark among the figure: 1-casing, 2-gas valve, 3-gas conduit, 4-O-ring seal, 5-gas storage space, 6-gas-storing bag, 7-heating arrangement, 8-vacuum absorption device, 9-vacuum valve, 10-sucker.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explanation:
Shown in Figure 1 is a kind of application VOC sampling apparatus of the present invention, and its casing 1 is the casing of a bottom surface opening, and the opening part of casing 1 has O-ring seal 4.During use, earlier O-ring seal 4 is packed in the seal groove of casing 1 opening part, then casing 1 is covered on the determinand surface, O-ring seal 4 and determinand surface combination form the gas storage space 5 of a sealing.In order to guarantee that the gas in the gas storage space 5 does not receive external interference; The inwall of casing 1 should be selected the nothing volatilization for use; There is not absorption, the material that chemical stability is high (as, stainless steel) process; Guaranteeing that the gaseous volatilization thing except that determinand VOC can not get into gas storage space 5, and gas not can with the inwall generation chemical reaction of casing 1.
2, one gas valves 2 of two gas valves are installed on the casing 1 are connected with air cleaning unit, another valve is communicated with gas storage space 5 with extraneous.Before carrying out the VOC sampling; Need clean gas storage space 5; The method of cleaning is: with air pump air is pressed into air cleaning unit, airborne water vapor, oxycarbide; Oxides of nitrogen and VOC etc. are adsorbed by the adsorbent in the air cleaning unit, and pure air is input in the gas storage space.
The opening part of casing 1 is installed two O-ring seals, and wherein the elastic modulus of the O-ring seal of internal layer is less, and more outstanding slightly than outer O-ring seal.When casing 1 was placed on the determinand surface, what at first touch the determinand surface was the O-ring seal of internal layer, and for the bad determinand surface of planarization, the internal layer O-ring seal can produce bigger elastic deformation, fits as much as possible with the determinand surface; And outer O-ring seal is relatively good for the adaptability of smooth surface.Two-layer like this O-ring seal can improve the sealing of whole device effectively.
Because box opening leaves a plurality of seal grooves, therefore, the quantity of O-ring seal, size, quality have bigger choice, and convenient combination according to the different O-ring seal of different determinand surface selections is to reach best sealing effectiveness.
The VOC sampling apparatus is installed heating arrangement 7, and effect is an evaporation rate of accelerating VOC.In this example, heating arrangement 7 is mounted in the infrared heater in the casing 1, places outside the gas storage space 5, and the direction of irradiation is the opening direction towards casing 1, promptly towards the direction of determinand.
As the efficient of finding Infrared Heating is not high, can adopt the resistance-type type of heating yet.
The VOC sampling apparatus has temperature control module, and said temperature control module comprises temperature inductor, computer chip and control panel.Begin before the heating, operating personnel set needed temperature and heat time heating time through control panel.The process of temperature control is by procedure auto-control; That is, compare by the temperature and the preset temperature of program, according to result relatively to the temperature inductor feedback; The switch or the watt level of control heating arrangement remain near the preset temperature with making the interior temperature stabilization of sampling apparatus.
When heating finishes precontract 5min, gas collecting device such as Tenax TA and DNPH adsorption tube, flowmeter etc. are connected to the gas valve 2 of sampling box.When heating finishes, open internal gas valve 2, begin to collect.
The VOC sampling apparatus has vacuum absorption device 8; As shown in Figure 2; Two vacuum absorption devices 8 of casing 1 outer installation, this device is a sucker 10 that has vacuum valve 9, and sucker 10 is adjacent to the determinand surface; With the air that vacuum pump is extracted out in the sucker 10 through vacuum valve 9, then sucker can receive the effect of atmospheric pressure and be fixed on the determinand.Vacuum absorption device 8 can apply the pressure towards the determinand surface to casing 1, and the VOC sampling apparatus is fixed on the determinand more firmly, and improves the sealing of gas storage space 5.Install after the vacuum absorption device, the VOC sampling apparatus can be fixed on the side and the end face of buildings, can be used to gather the escaping gas on metope, roof.Should leave the interface of a plurality of installation vacuum absorption devices around the casing 1, make the VOC sampling apparatus can satisfy the collection demand of multiple situation.
The above; Only be in order to practical implementation case of the present invention to be described; But be not in order to limit practical range of the present invention; Such as those skilled in the art must be covered by the scope of claim of the present invention not breaking away from all equivalence changes of being accomplished under indicated spirit of the present invention and the principle or modifying.
Claims (10)
1. VOC sampling apparatus, it is characterized in that: VOC sampling apparatus (1) is a uncovered casing; The gas-storing bag (6) that an opening is arranged in the said casing (1), the opening part of gas-storing bag (6) is connected the opening part of casing (1); The opening part of said gas-storing bag (6) has O-ring seal (4); Said casing (1) can cover on the determinand surface, and O-ring seal (4) and determinand surface combination make gas-storing bag (6) and determinand surface closure and form the gas storage space (5) of a sealing; Said VOC sampling apparatus has air cleaning unit, with gas storage space UNICOM; Said VOC sampling apparatus has heating arrangement.
2. VOC sampling apparatus according to claim 1 is characterized in that: in the said cabinet wall insulation material is arranged.
3. VOC sampling apparatus according to claim 1 is characterized in that: the opening part of said casing (1) is provided with a plurality of seal grooves, and a plurality of O-ring seals can be installed.
4. according to claim 1 and 3 described VOC sampling apparatuses, it is characterized in that: said O-ring seal is removable.
5. VOC sampling apparatus according to claim 1 is characterized in that: said heating arrangement (7) is mounted in the infrared heater in the casing, places outside the gas storage space (5), and the direction of irradiation is the direction towards casing (1) opening.
6. VOC sampling apparatus according to claim 1 is characterized in that: said heating arrangement is a resistance type heater.
7. VOC sampling apparatus according to claim 1 is characterized in that: said heating arrangement is a microwave applicator.
8. VOC sampling apparatus according to claim 1 is characterized in that: said VOC sampling apparatus has vacuum absorption device (8), and this device can be fixed in the VOC sampling apparatus on the surface of determinand.
9. VOC sampling apparatus according to claim 1 is characterized in that: said VOC sampling apparatus has temperature control module, and said temperature control module comprises temperature sensor, controller, and sensor is positioned in determinand surface and the casing.
10. VOC sampling apparatus according to claim 9; It is characterized in that: the temperature of said VOC sampling apparatus is by the procedure auto-control of temperature control module; That is, compare by the temperature and the preset temperature of program, according to result relatively to the temperature inductor feedback; The switch or the watt level of control heating arrangement remain near the preset temperature with making the interior temperature stabilization of sampling apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102740806A CN102374940A (en) | 2011-09-15 | 2011-09-15 | VOC (Volatile Organic Compound) sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102740806A CN102374940A (en) | 2011-09-15 | 2011-09-15 | VOC (Volatile Organic Compound) sampling device |
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| CN102374940A true CN102374940A (en) | 2012-03-14 |
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| CN2011102740806A Pending CN102374940A (en) | 2011-09-15 | 2011-09-15 | VOC (Volatile Organic Compound) sampling device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728162A (en) * | 2014-01-16 | 2014-04-16 | 深圳市华测检测技术股份有限公司 | Vacuum adsorption type device for sampling VOC (volatile organic compounds) on surface of sample |
| CN104697821A (en) * | 2013-12-09 | 2015-06-10 | 深圳市鑫汇科股份有限公司 | Air detection device, air sampling device and air sampling method |
| CN106482989A (en) * | 2016-08-15 | 2017-03-08 | 浙江宏泰工程项目管理有限公司 | Iolation type room air detects sample collecting device |
| CN106769239A (en) * | 2016-12-05 | 2017-05-31 | 北京汽车研究总院有限公司 | A kind of gas accommodating device and vehicle |
| CN110988264A (en) * | 2019-12-09 | 2020-04-10 | 中国商用飞机有限责任公司 | Portable pollutant detection device |
Citations (5)
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| JPH11316178A (en) * | 1998-03-02 | 1999-11-16 | Techno Ryowa Ltd | Device and method for evaluating gas |
| JP2002122521A (en) * | 2000-08-02 | 2002-04-26 | Univ Waseda | Diffusion detector for volatile organic compound or the like from building and construction material |
| JP2005055336A (en) * | 2003-08-06 | 2005-03-03 | Atsuo Nozaki | Indoor chemical material measuring apparatus |
| JP2006226745A (en) * | 2005-02-16 | 2006-08-31 | Isuzu Motors Ltd | Voc collecting apparatus |
| CN202204710U (en) * | 2011-09-15 | 2012-04-25 | 深圳市华测检测技术股份有限公司 | Volatile organic compound (VOC) sampling device |
-
2011
- 2011-09-15 CN CN2011102740806A patent/CN102374940A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11316178A (en) * | 1998-03-02 | 1999-11-16 | Techno Ryowa Ltd | Device and method for evaluating gas |
| JP2002122521A (en) * | 2000-08-02 | 2002-04-26 | Univ Waseda | Diffusion detector for volatile organic compound or the like from building and construction material |
| JP2005055336A (en) * | 2003-08-06 | 2005-03-03 | Atsuo Nozaki | Indoor chemical material measuring apparatus |
| JP2006226745A (en) * | 2005-02-16 | 2006-08-31 | Isuzu Motors Ltd | Voc collecting apparatus |
| CN202204710U (en) * | 2011-09-15 | 2012-04-25 | 深圳市华测检测技术股份有限公司 | Volatile organic compound (VOC) sampling device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697821A (en) * | 2013-12-09 | 2015-06-10 | 深圳市鑫汇科股份有限公司 | Air detection device, air sampling device and air sampling method |
| CN103728162A (en) * | 2014-01-16 | 2014-04-16 | 深圳市华测检测技术股份有限公司 | Vacuum adsorption type device for sampling VOC (volatile organic compounds) on surface of sample |
| CN106482989A (en) * | 2016-08-15 | 2017-03-08 | 浙江宏泰工程项目管理有限公司 | Iolation type room air detects sample collecting device |
| CN106769239A (en) * | 2016-12-05 | 2017-05-31 | 北京汽车研究总院有限公司 | A kind of gas accommodating device and vehicle |
| CN110988264A (en) * | 2019-12-09 | 2020-04-10 | 中国商用飞机有限责任公司 | Portable pollutant detection device |
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Application publication date: 20120314 |