CN202204710U - Volatile organic compound (VOC) sampling device - Google Patents
Volatile organic compound (VOC) sampling device Download PDFInfo
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- CN202204710U CN202204710U CN 201120346879 CN201120346879U CN202204710U CN 202204710 U CN202204710 U CN 202204710U CN 201120346879 CN201120346879 CN 201120346879 CN 201120346879 U CN201120346879 U CN 201120346879U CN 202204710 U CN202204710 U CN 202204710U
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- sampling apparatus
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Abstract
The utility model discloses a volatile organic compound (VOC) sampling device capable of collecting volatile gas of the surfaces of various venues. A box body of the VOC sampling device is open on one face. A gas storage bag with one face open is arranged in the box body, and the opening position of the gas storage bag is connected with an opening position of the box body. A seal ring is arranged at the opening position of the gas storage bag. The box body can be covered on the surface of an object to be tested, and the seal ring is combined with the surface of the object to be tested so that the gas storage bag and the object to be tested are closed to form a sealed gas storage space. At least one gas valve is arranged on the box body and is connected with a gas guide pipe communicating the gas storage space and the outside. The VOC sampling device can be carried in a sampling venue to perform on-site sampling on the surface of the object to be tested, thereby overcoming the shortcoming of damaging the object to be tested of an existing volatile gas sampling device.
Description
Technical field
The utility model 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.
The utility model content
The utility model 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 utility model is taked 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.
The VOC sampling apparatus that uses the utility model to provide can carry out the harmless sampling in scene of VOC to determinand large-scale, that can not destroy, has avoided the destruction of traditional VOC sampling process to determinand.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 utility model;
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 utility model is done further explanation:
Shown in Figure 1 is a kind of VOC sampling apparatus of using the utility model, 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; It only is practical implementation case in order to explanation the utility model; But be not in order to limit the practical range of the utility model; Such as those skilled in the art must be covered by the scope of the utility model claim not breaking away from all equivalence changes of being accomplished under indicated spirit of the utility model 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 |
|---|---|---|---|
| CN 201120346879 CN202204710U (en) | 2011-09-15 | 2011-09-15 | Volatile organic compound (VOC) sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120346879 CN202204710U (en) | 2011-09-15 | 2011-09-15 | Volatile organic compound (VOC) sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202204710U true CN202204710U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120346879 Expired - Fee Related CN202204710U (en) | 2011-09-15 | 2011-09-15 | Volatile organic compound (VOC) sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202204710U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374940A (en) * | 2011-09-15 | 2012-03-14 | 深圳市华测检测技术股份有限公司 | VOC (Volatile Organic Compound) sampling device |
| CN111426004A (en) * | 2020-03-25 | 2020-07-17 | 江苏安捷鹿检测科技有限公司 | Distributed indoor air monitoring method |
-
2011
- 2011-09-15 CN CN 201120346879 patent/CN202204710U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374940A (en) * | 2011-09-15 | 2012-03-14 | 深圳市华测检测技术股份有限公司 | VOC (Volatile Organic Compound) sampling device |
| CN111426004A (en) * | 2020-03-25 | 2020-07-17 | 江苏安捷鹿检测科技有限公司 | Distributed indoor air monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: QINGDAO CENTRE TESTING INTERNATIONAL CO., LTD. Free format text: FORMER OWNER: SHENZHEN CENTRE TESTING TECHNOLOGY CO., LTD. Effective date: 20150326 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518057 SHENZHEN, GUANGDONG PROVINCE TO: 266101 QINGDAO, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150326 Address after: 266101 Shandong Province, Qingdao city Laoshan District Road No. 3 Gaochang plant No. 7 Building 2, 3 storey building Patentee after: Qingdao Center Testing Technology Co., Ltd. Address before: 518057 Guangdong, Shenzhen Province, Baoan District District, Wei Wei Industrial Park, building C, 70 Patentee before: Shenzhen Centre Testing Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20160915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |