CN204165932U - A kind of landfill gas leak detection apparatus - Google Patents
A kind of landfill gas leak detection apparatus Download PDFInfo
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- CN204165932U CN204165932U CN201420533915.4U CN201420533915U CN204165932U CN 204165932 U CN204165932 U CN 204165932U CN 201420533915 U CN201420533915 U CN 201420533915U CN 204165932 U CN204165932 U CN 204165932U
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- leak detection
- detection apparatus
- landfill gas
- mixed flow
- gas leak
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Abstract
The utility model provides a kind of landfill gas leak detection apparatus, belongs to Geotechnical Engineering field.This device is made up of nozzle, negative pressure inlet chamber, mixed flow diameter-changing cavity, photoion sensor, foam storage chamber.Compare the mode that gas to be measured directly enters sensor, landfill gas leak detection apparatus of the present utility model first adopts jet pump technology, sensor is entered again after gas to be measured and pure water are mixed into microfoam, because the dissolution of water has formed a part of ion, after the UV-irradiation of same illumination, air molecule is easier to ionization, thus obtains larger current signal, improves measuring accuracy.Landfill gas leak detection apparatus of the present utility model can be used for detecting CH
4, CO
2, N
2, O
2, H
2, H
2s, NH
3deng, and multiple gases composition can be detected, to leak detection, the Environmental capacity of landfill gas and recycle significant simultaneously.
Description
Technical field
The utility model relates to a kind of landfill gas leak detection apparatus, belongs to Geotechnical Engineering field.
Background technology
In the various modes of current process municipal refuse, Sanitary Landfill Technology still in the highest flight.After rubbish body is landfilled, a large amount of gas can be produced under microbial action, comprise CH
4, CO
2, N
2, O
2, H
2, H
2s, NH
3deng, wherein principal ingredient is CO
2and CH
4, these two kinds of gases can produce quite significantly greenhouse effect, if directly discharge, not only can aggravate climate change, also can waste wherein recoverable part (as CH
4).NH in addition in landfill gas
3and H
2s is all inflammable gass, has the danger of blasting at certain condition, and is all the main matter producing foul odour, comparatively large to environmental hazard, how landfill gas is carried out the study hotspot that effective recycling has become many countries.
In addition because conventional clay overlayer is direct and atmosphere, obvious by air drying and watering cycle effect, overlayer if things go on like this can be caused to ftracture, cause landfill gas easily to be revealed, therefore the Site Detection of gas leakage is also very important one side.
No matter be recycle or Site Detection, all need to carry out discriminatory analysis to the gas componant of landfill yard.Owing to having the features such as easy to detect, continuity is strong, photoionization gas detection sensor is used widely.Traditional photoionization gas detection sensor utilizes UV-irradiation gas to be measured when measuring, and gas molecule is ionized and forms micro-electric current, thus formation sensor signal detects, and because this micro-electric current is less, makes troubles, also affect measuring accuracy to detection.Some improvement patents to photoionization gas-detecting device are there are in the market, as China Patent Publication No. CN102324371A, publication date on January 18th, 2012, denomination of invention is the photo-ionization gas detector ionization chamber based on printed circuit board process, but owing to being the improvement to ionization chamber, cost is higher, comparatively complicated.
Summary of the invention
For above-mentioned existing problems, the purpose of this utility model is to provide a kind of landfill gas leak detection apparatus.For achieving the above object, technical solution of the present utility model is:
A kind of landfill gas leak detection apparatus, described pick-up unit is by nozzle, negative pressure inlet chamber, mixed flow diameter-changing cavity, photoion sensor, foam storage chamber forms, chamber is provided with air hole to negative pressure inlet, nozzle is embedded in an end face in negative pressure inlet chamber, the entrance point of mixed flow diameter-changing cavity is embedded in another end face in negative pressure inlet chamber, the water delivering orifice of nozzle is corresponding with mixed flow diameter-changing cavity entrance point, the endpiece of mixed flow diameter-changing cavity is embedded in an end face of foam storage chamber, an end face of foam storage chamber is provided with pressure relief opening, the inwall of foam storage chamber is provided with photoion sensor, photoion sensor is positioned at above pressure relief opening.
The equal conllinear in axis of nozzle, negative pressure inlet chamber, mixed flow diameter-changing cavity, foam storage chamber, simultaneously with the axes normal of negative pressure inlet chamber air hole.
Described mixed flow diameter-changing cavity outlet aperture is greater than import aperture.
The external pressure limiting valve of pressure relief opening of described foam storage chamber.
Owing to have employed above technical scheme, landfill gas leak detection apparatus of the present utility model, after nozzle injection pressure pure water, form subnormal ambient, make the easier access to plant of gas to be measured, and be mixed to form foam with pure water, after the effect of mixed flow diameter-changing cavity generation aeration, gas dissolves more abundant in pure water, and form foam, gas molecule is more easily ionized under sensor light is according to effect, and then forms stronger micro-electric current, improve accuracy in detection, and detection speed is fast.Apparatus design of the present utility model is reasonable, and structure is simple, and cost is lower, easy for operation.Landfill gas leak detection apparatus of the present utility model can be used for detecting CH
4, CO
2, N
2, O
2, H
2, H
2s, NH
3deng gas, to leak detection, the Environmental capacity of landfill gas and recycle significant.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See accompanying drawing.
A kind of landfill gas leak detection apparatus, described pick-up unit is by nozzle 1, negative pressure inlet chamber 2, mixed flow diameter-changing cavity 3, photoion sensor 4, foam storage chamber 5 forms, negative pressure inlet chamber 2 is provided with air hole 7, nozzle 1 is embedded in an end face in negative pressure inlet chamber 2, the entrance point of mixed flow diameter-changing cavity 3 is embedded in another end face in negative pressure inlet chamber 2, the water delivering orifice of nozzle 1 is corresponding with mixed flow diameter-changing cavity 3 entrance point, the endpiece of mixed flow diameter-changing cavity 3 is embedded in an end face of foam storage chamber 5, mixed flow diameter-changing cavity 3 outlet aperture is greater than import aperture, an end face of foam storage chamber 5 is provided with pressure relief opening 6, the external pressure limiting valve of pressure relief opening 6, the inwall of foam storage chamber 5 is provided with photoion sensor 4, photoion sensor 4 is positioned at above pressure relief opening 6.The equal conllinear in axis of nozzle 1, negative pressure inlet chamber 2, mixed flow diameter-changing cavity 3, foam storage chamber 5, simultaneously with the axes normal of air hole 7.
The principle of work of equipment described in the utility model is as follows:
Be connected on the device that can provide pressure pure water by nozzle water inlet, pressure relief opening is connected with pressure limiting valve, and gas to be measured enters negative pressure inlet chamber by access road, when foam storage chamber internal gas pressure is too high, can be vented pressure regulation by pressure relief opening.There is the pure water of certain pressure after nozzle at high speeds ejection, due to jet action, certain negative pressure can be formed in negative pressure inlet chamber, from air intake opening by gas negative suction inlet chamber to be measured, then press water and gas and vapor permeation, mixed flow diameter-changing cavity is entered with certain pressure, there is aeration effect, form microfoam, these microfoams are assembled at foam storage chamber, certain stability is kept under certain pressure and surface tension effects, some microfoam enters photoion sensor, ionizing event is there is under sensor light shines, form micro-electric current, through signal condition, amplify, change is sent, collection completes measurement.
Claims (4)
1. a landfill gas leak detection apparatus, it is characterized in that: described pick-up unit is by nozzle (1), negative pressure inlet chamber (2), mixed flow diameter-changing cavity (3), photoion sensor (4), foam storage chamber (5) forms, negative pressure inlet chamber (2) is provided with air hole (7), nozzle (1) is embedded in an end face in negative pressure inlet chamber (2), the entrance point of mixed flow diameter-changing cavity (3) is embedded in another end face in negative pressure inlet chamber (2), the water delivering orifice of nozzle (1) is corresponding with mixed flow diameter-changing cavity (3) entrance point, the endpiece of mixed flow diameter-changing cavity (3) is embedded in an end face of foam storage chamber (5), an end face of foam storage chamber (5) is provided with pressure relief opening (6), the inwall of foam storage chamber (5) is provided with photoion sensor (4), photoion sensor (4) is positioned at pressure relief opening (6) top.
2. a kind of landfill gas leak detection apparatus as claimed in claim 1, it is characterized in that: the equal conllinear in axis of nozzle (1), negative pressure inlet chamber (2), mixed flow diameter-changing cavity (3), foam storage chamber (5), simultaneously with the axes normal of air hole (7).
3. a kind of landfill gas leak detection apparatus as claimed in claim 1, is characterized in that: described mixed flow diameter-changing cavity (3) outlet aperture is greater than import aperture.
4. a kind of landfill gas leak detection apparatus as claimed in claim 1, is characterized in that: pressure relief opening (6) the external pressure limiting valve of described foam storage chamber (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420533915.4U CN204165932U (en) | 2014-09-17 | 2014-09-17 | A kind of landfill gas leak detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420533915.4U CN204165932U (en) | 2014-09-17 | 2014-09-17 | A kind of landfill gas leak detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204165932U true CN204165932U (en) | 2015-02-18 |
Family
ID=52539610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420533915.4U Active CN204165932U (en) | 2014-09-17 | 2014-09-17 | A kind of landfill gas leak detection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204165932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023216364A1 (en) * | 2022-05-12 | 2023-11-16 | 中国矿业大学 | Variable-range valve leakage detection device |
-
2014
- 2014-09-17 CN CN201420533915.4U patent/CN204165932U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023216364A1 (en) * | 2022-05-12 | 2023-11-16 | 中国矿业大学 | Variable-range valve leakage detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN ZHONGLAN ENVIRONMENTAL PROTECTION TECHNOL Free format text: FORMER NAME: SHENZHEN ZHONGLAN ENVIRONMENT ENGINEERING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518067, Guangdong, Shenzhen, Shekou, Nanshan District, Nanhai Avenue, The Union Buildings, No. 1069 Patentee after: Zhong Lan environmental protection Science and Technology Co., Ltd. of Shenzhen Patentee after: JIANGSU ZHONGYI ECOLOGICAL SOIL INSTITUTE CO., LTD. Address before: 306, 1, 309, 518067, Xinghua Road, Shekou Xinghua Road, Shekou, Shenzhen, Guangdong,, Nanshan District, China Patentee before: Zhong Lan Environmental Protection Technology Co., Ltd of Shenzhen Patentee before: JIANGSU ZHONGYI ECOLOGICAL SOIL INSTITUTE CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000, The Union Buildings, No. 1069, Nanhai Road, Shekou, Guangdong, Shenzhen, Nanshan District, three Co-patentee after: JIANGSU ZHONGYI ECOLOGICAL SOIL INSTITUTE Co.,Ltd. Patentee after: GAD ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 518067, Guangdong, Shenzhen, Shekou, Nanshan District, Nanhai Avenue, The Union Buildings, No. 1069 Co-patentee before: JIANGSU ZHONGYI ECOLOGICAL SOIL INSTITUTE Co.,Ltd. Patentee before: SHENZHEN GAD ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |