CN112649572A - Soil volatile pollutant detection drill bit and detection device of liquid early warning - Google Patents
Soil volatile pollutant detection drill bit and detection device of liquid early warning Download PDFInfo
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- CN112649572A CN112649572A CN202011473654.8A CN202011473654A CN112649572A CN 112649572 A CN112649572 A CN 112649572A CN 202011473654 A CN202011473654 A CN 202011473654A CN 112649572 A CN112649572 A CN 112649572A
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- 238000001514 detection method Methods 0.000 title claims abstract description 97
- 239000007788 liquid Substances 0.000 title claims abstract description 96
- 239000002689 soil Substances 0.000 title claims abstract description 72
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 55
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 80
- 239000012159 carrier gas Substances 0.000 claims abstract description 71
- 239000000523 sample Substances 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000000356 contaminant Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000012855 volatile organic compound Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003204 osmotic effect Effects 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 150000008422 chlorobenzenes Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical group 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0047—Organic compounds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
- G01V9/02—Determining existence or flow of underground water
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Geophysics (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
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- Geology (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a soil volatile pollutant detection drill bit and a detection device with liquid early warning, wherein a gas inlet communicated with the outside is formed in the side wall of a carrier gas channel, a first valve is arranged at the gas inlet, a liquid early warning part is arranged below the gas inlet, a liquid detection channel extending inwards from the outer wall is formed in the liquid early warning part, and a liquid probe is arranged in the liquid detection channel; the detection drill bit and the detection method are used for gas detection in soil, gas is downwards inserted into the soil through carrier gas, when water flow existing in a soil layer to be detected flows into the liquid detection channel, the water flow is detected through the liquid probe, the detection drill bit is prevented from being inserted into the soil, the water flow in the soil flows backwards into the carrier gas channel, volatile pollutants entering the carrier gas channel are sent out through the carrier gas, the adhesion of the volatile pollutants in the gas outlet cavity is avoided, and effective and accurate detection of the volatile pollutants can be realized without a permeable membrane.
Description
Technical Field
The invention relates to the technical field of soil volatile pollutant detection, in particular to a liquid early warning soil volatile pollutant detection drill bit and a liquid early warning soil volatile pollutant detection device.
Background
The pollutants in the land not only comprise heavy metals such as mercury, chromium, lead, cadmium, arsenic and nickel, but also can contain organic matters such as benzene series, chlorinated hydrocarbons, petroleum hydrocarbons, polycyclic aromatic hydrocarbons, pesticides and polychlorinated biphenyl, and inorganic matters such as cyanide and corrosive ions. The raw materials, intermediates, catalysts or end products of the production process can contaminate the land. Due to long-term industrial activities, land pollution is mostly characterized by organic and inorganic composite pollution.
Common volatile organic pollutants harmful to human health include volatile halogenated hydrocarbons, benzene series, chlorobenzene series, and the like. Therefore, the detection of volatile organic compounds in soil plays an important role in pollution control. With the use of large quantities of pesticides, organic solvents and the discharge of large quantities of waste water and waste products, the serious contamination of soils, sediments, surface and ground water sources and ecosystems with volatile organic pollutants (VOCs) has become a ubiquitous environmental problem. After the volatile organic compounds enter soil and underground water systems, the growth of crops can be influenced, vegetation can be damaged, and the health of people is seriously harmed. The main reason is that the quantity and speed of VOCs entering the soil exceed the capacity and purification speed of the soil, so that the properties, composition, properties and the like of the soil are changed, and the accumulation process of pollutants is gradually dominant. Therefore, detection of Volatile Organic Compounds (VOCs) in soil plays an important role in pollution control.
Currently, analysis of VOCs includes both laboratory instrumental analysis and field instrumental detection. VOCs has very easily volatilizees and the characteristics that run off, consequently, although laboratory instrument analysis can be to VOCs accuracy nature determination and ration, but the sample will pass through a plurality of intermediate links such as transportation, save, greatly increased the volatile possibility of sample, the analysis result lacks the promptness, and the cost is on the high side, needs research and development on-the-spot VOCs real-time quick analysis device.
Because the gas content in the deep soil environment is low, the gas moving path is long, and the VOCs gas cannot be pumped to the ground by adopting a negative pressure direct pumping mode. And because the moisture content is different in each geological formation of soil, when test probe passes through the geological formation of high moisture content in the process down, rivers can flow into gas sampling intracavity through gas inlet, cause gaseous detection chamber to block up, influence the testing effect, influence probe life even.
The Membrane Interface Probe (MIP) system has been widely used in recent years. The permeable membrane is an important component of the MIP system, and in the process of passing the VOCs gas through the permeable membrane, firstly, the VOCs gas molecules are dissolved on the surface of the membrane in contact with the membrane, then, due to concentration gradients on two sides of the membrane, the VOCs gas molecules are diffused to the other side of the membrane, and finally, the VOCs gas molecules are resolved from the other side surface of the membrane. Then, utilize the carrier gas to take away VOCs gaseous molecule, combine subaerial volatile organic compounds to detect analytical equipment, can realize the continuous detection to the volatile organic pollutants concentration of different degree of depth departments in the soil, it can realize the instant normal position detection of VOCs in the soil, has the advantage of high efficiency low cost, however, because the osmotic membrane cost is higher, damages easily in the high temperature environment that makes VOCs gasification in the soil, consequently can not used repeatedly, causes the MIP to detect the cost higher.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a liquid early warning soil volatile pollutant detection drill bit and a detection device.
The invention provides a liquid early warning soil volatile pollutant detection drill bit, wherein a carrier gas inlet and a carrier gas outlet are arranged at the upper end of the detection drill bit, a U-shaped carrier gas channel is formed between the carrier gas inlet and the carrier gas outlet, a gas inlet communicated with the outside is arranged on the side wall of the carrier gas channel, the U-shaped carrier gas channel is divided into an air inlet cavity close to one side of the carrier gas inlet and an air outlet cavity close to one side of the carrier gas outlet by the gas inlet, and a first valve used for connecting and disconnecting the U-shaped carrier gas channel and the outside is arranged at the gas inlet;
detect the drill bit outer wall and still be equipped with liquid early warning portion, liquid early warning portion is located gas inlet below, liquid early warning portion is equipped with the liquid detection passageway that inwards extends from the outer wall, just be equipped with liquid probe in the liquid detection passageway.
Preferably, liquid detection passageway is including the drainage portion and the detection portion that communicate in proper order, the drainage portion is followed detect drill bit outer wall downwardly extending, the detection portion is to keeping away from drainage portion direction upwardly extending, and liquid probe is located in the detection portion.
Preferably, the liquid probe employs a proximity sensor.
Preferably, the first valve is connected with the liquid probe and is opened/closed according to the detection result of the liquid probe.
Preferably, a heating mechanism is further arranged inside the detection drill bit.
Preferably, a filter screen is arranged at the gas inlet.
Preferably, the filter screen adopts the metal mesh, and heating mechanism is connected with the filter screen and is used for heating the filter screen.
Preferably, a second valve for switching on and off the air inlet cavity is arranged in the air inlet cavity.
According to the soil volatile pollutant detection drill bit with liquid early warning, a gas inlet communicated with the outside is formed in the side wall of a carrier gas channel, a U-shaped carrier gas channel is divided into a gas inlet cavity and a gas outlet cavity which are formed in the two sides of the gas inlet, a first valve used for connecting and disconnecting the U-shaped carrier gas channel with the outside is arranged at the gas inlet, a liquid early warning part is arranged below the gas inlet, a liquid detection channel extending inwards from the outer wall is arranged in the liquid early warning part, and a liquid probe is arranged in the liquid detection channel; the aforesaid detects the drill bit and is arranged in the gaseous detection of soil, insert the in-process downwards with gas in soil through the carrier gas, rivers that exist in the soil horizon that awaits measuring flow into liquid detection passageway in, detect rivers through liquid probe, avoid detecting the drill bit and insert the soil in-process, rivers in the soil flow backward and flow into carrier gas passageway, and utilize the carrier gas to see off the volatile pollutant that gets into carrier gas passageway, avoid volatile pollutant to adhere to in the intracavity of giving vent to anger, need not the effective accurate detection that volatile pollutant can be realized to the osmotic membrane.
The invention also provides a liquid early warning soil volatile pollutant detection device which comprises the liquid early warning soil volatile pollutant detection drill bit.
Preferably, the gas outlet cavity is communicated with the carrier gas outlet, and a vacuum pump is further included and is communicated with the carrier gas outlet to form negative pressure in the gas outlet cavity.
In the invention, the technical effect of the soil volatile pollutant detection device with liquid early warning provided by the invention is similar to that of the soil volatile pollutant detection drill bit with liquid early warning, and therefore, the description is omitted.
Drawings
Fig. 1 is a schematic structural diagram of a liquid early warning drill for detecting soil volatile contaminants according to the present invention.
Fig. 2 is a partially enlarged schematic view of the gas inlet of fig. 1.
Detailed Description
As shown in fig. 1 and 2, fig. 1 is a schematic structural diagram of a liquid-warning soil volatile contaminant detection drill bit according to the present invention, and fig. 2 is a partially enlarged schematic view of the gas inlet of fig. 1.
Referring to fig. 1 and 2, according to the soil volatile pollutant detection drill bit with liquid early warning provided by the invention, a carrier gas inlet and a carrier gas outlet are arranged at the upper end of the detection drill bit, a U-shaped carrier gas channel is formed between the carrier gas inlet and the carrier gas outlet, a gas inlet 1 communicated with the outside is arranged on the side wall of the carrier gas channel, the gas inlet 1 divides the U-shaped carrier gas channel into an air inlet cavity 21 close to one side of the carrier gas inlet and an air outlet cavity 22 close to one side of the carrier gas outlet, and a first valve 31 for connecting and disconnecting the U-shaped carrier gas channel and the outside is arranged at the gas inlet 1;
detect the drill bit outer wall and still be equipped with liquid early warning portion, liquid early warning portion is located 1 below of gas inlet, liquid early warning portion is equipped with the liquid detection passageway 4 of inwards extending from the outer wall, just be equipped with liquid probe 5 in the liquid detection passageway 4.
In this embodiment, according to the soil volatile pollutant detection drill bit with liquid early warning provided by the present invention, a gas inlet communicated with the outside is provided on a side wall of a carrier gas channel, a U-shaped carrier gas channel is divided into a gas inlet cavity and a gas outlet cavity on both sides of the gas inlet, a first valve for connecting and disconnecting the U-shaped carrier gas channel and the outside is provided at the gas inlet, a liquid early warning part is provided below the gas inlet, a liquid detection channel extending inwards from an outer wall is provided at the liquid early warning part, and a liquid probe is provided in the liquid detection channel; the aforesaid detects the drill bit and is arranged in the gaseous detection of soil, insert the in-process downwards with gas in soil through the carrier gas, rivers that exist in the soil horizon that awaits measuring flow into liquid detection passageway in, detect rivers through liquid probe, avoid detecting the drill bit and insert the soil in-process, rivers in the soil flow backward and flow into carrier gas passageway, and utilize the carrier gas to see off the volatile pollutant that gets into carrier gas passageway, avoid volatile pollutant to adhere to in the intracavity of giving vent to anger, need not the effective accurate detection that volatile pollutant can be realized to the osmotic membrane.
The specific working process of the soil volatile pollutant detection drill bit of the liquid early warning of the embodiment comprises the following steps:
s1, closing the first valve 31, and detecting the liquid environment around the detection drill bit through the liquid probe 5;
in a specific liquid detection process, the liquid detection channel 4 comprises a drainage part and a detection part which are sequentially communicated, the drainage part extends downwards from the outer wall of the detection drill bit, the detection part extends upwards in a direction far away from the drainage part, and the liquid probe 5 is positioned in the detection part; when the aquifer exists in the soil, water flow in the soil flows into the liquid detection channel through the inlet of the drainage part on the outer wall of the drill bit and flows downwards under the action of gravity, and then the liquid level in the detection part gradually rises due to the liquid level inside and outside the liquid detection channel until the water level is detected by the liquid probe; avoid the liquid probe directly to set up in drainage portion or detect the liquid detection error that the drill bit outer wall caused.
S2, when the liquid probe 5 does not detect the water flow in the soil, opening the first valve 31 to let the volatile pollutants in the soil enter the U-shaped carrier gas channel through the gas inlet 1;
specifically, the first valve 31 is connected with the liquid probe 5 and is opened/closed according to the detection result of the liquid probe 5, and when the liquid probe detects liquid, namely the detection probe is in a high water content layer, the first valve is closed, so that water flow is prevented from entering the carrier gas channel.
In other specific embodiments, a heating mechanism is further arranged inside the detection drill bit; through right soil around the detection drill bit heats, improves the volatile volume of pollutant in the soil for the volatile pollutant that the evaporation formed passes through gas inlet 1 gets into in the U type carrier gas passageway, thereby improve pollutant gas's detection precision.
And S3, closing the first valve 31, introducing carrier gas into the U-shaped carrier gas channel through the carrier gas inlet, and sending out the volatile pollutants in the U-shaped carrier gas channel through the carrier gas outlet by the carrier gas.
In the specific design mode of the detection drill bit, a filter screen 6 is arranged at the gas inlet 1, and surrounding soil is prevented from entering the gas inlet through the filter screen.
In a further specific embodiment, the filter screen 6 is made of a metal mesh, a heating mechanism is connected with the filter screen 6 for heating the filter screen 6, and in S2, soil around the detection drill bit is heated through the filter screen 6 arranged at the gas inlet 1; the surrounding soil is directly heated through the filter screen, so that VOCs gas heated and evaporated in the surrounding soil directly enters the U-shaped carrier gas channel through meshes of the filter screen, and the heating efficiency and the VOCs gas sampling efficiency are improved; specifically, the filter screen can adopt a metal mesh structure, so that the heating conductivity is improved.
In other specific design manners, a second valve 32 for opening and closing the intake chamber 21 is arranged in the intake chamber 21, and the intake chamber 21 is blocked by the second valve 32. In the specific air inlet process, when the first valve is opened and the second valve is closed, the volatile pollutant gas inlet is communicated with the air outlet cavity to form a volatile pollutant gas inlet passage, so that when the volatile pollutant gas is fed, carrier gas in the air inlet cavity does not influence the volatile pollutant gas, and the efficiency of the volatile pollutant gas entering the air outlet cavity is improved; when the first valve is closed and the second valve is opened, the gas inlet cavity is communicated with the gas outlet cavity to form a carrier gas feeding passage, and at the moment, the carrier gas brings out the volatile pollutant gas in the gas outlet cavity through the carrier gas outlet; in this process, the carrier gas is heated by the filter screen via volatility pollutant gas entry and heaies up to guarantee volatility pollutant gas temperature when it transports volatility pollutant gas, avoid its cooling to take place the secondary and condense, thereby attach to on going out the gas cavity lateral wall.
Similarly, a third valve 33 for opening and closing the outlet cavity 22 may be disposed in the outlet cavity 22, and the outlet cavity 22 is blocked by the third valve 5; when the first valve and the second valve are opened and the third valve is closed, the air inlet cavity is communicated with the volatile pollutant gas inlet to form a flushing gas passage, and the reverse flushing of the volatile pollutants attached to the volatile pollutant gas inlet can be realized by introducing carrier gas into the air inlet cavity; or when the content of volatile pollutants in the soil is detected to be higher, a volatile pollutant treatment agent can be sprayed to the surrounding soil through the gas inlet of the gas inlet cavity through the volatile pollutant gas inlet, and then the in-situ detection and treatment of the VOC in the soil can be realized by inserting a probe into the soil.
In a specific alternative of the liquid probe, the liquid probe 5 is a proximity sensor.
The embodiment also provides a soil volatile pollutant detection device of liquid early warning, including the soil volatile pollutant detection drill bit of foretell liquid early warning.
In a specific embodiment, the gas-liquid separator further comprises a vacuum pump, wherein the vacuum pump is communicated with the carrier gas outlet and is used for forming negative pressure in the gas outlet cavity, and correspondingly, in S2, negative pressure is formed in the gas outlet cavity 22 during gas inlet, so that the gas inlet efficiency of the gas into the U-shaped carrier gas channel is increased.
In a practical design of this embodiment, the U-tube assembly may be inserted into the bit outer sleeve to create the desired air flow path within the bit outer sleeve.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The liquid early warning soil volatile pollutant detection drill bit is characterized in that a carrier gas inlet and a carrier gas outlet are formed in the upper end of the detection drill bit, a U-shaped carrier gas channel is formed between the carrier gas inlet and the carrier gas outlet, a gas inlet (1) communicated with the outside is formed in the side wall of the carrier gas channel, the U-shaped carrier gas channel is divided into an air inlet cavity (21) close to one side of the carrier gas inlet and an air outlet cavity (22) close to one side of the carrier gas outlet by the gas inlet (1), and a first valve (31) used for switching the U-shaped carrier gas channel to be communicated with the outside is arranged at the position of the gas inlet (1);
detect the drill bit outer wall and still be equipped with liquid early warning portion, liquid early warning portion is located gas inlet (1) below, liquid early warning portion is equipped with from the inside liquid detection passageway (4) that extend of outer wall, just be equipped with liquid probe (5) in liquid detection passageway (4).
2. The soil volatile pollutant of liquid early warning detects drill bit according to claim 1, characterized in that, liquid detection passageway (4) includes drainage portion and detection portion that communicate in proper order, drainage portion follow detect drill bit outer wall downwardly extending, detection portion upwards extends to keeping away from drainage portion direction, liquid probe (5) are located in detection portion.
3. The liquid pre-warning soil volatile contaminant detection drill bit of claim 2, wherein the liquid probe (5) employs a proximity sensor.
4. The liquid early warning soil volatile contaminant detection drill bit of claim 1, wherein the first valve (31) is connected to the liquid probe (5) and is opened/closed according to a detection result of the liquid probe (5).
5. The liquid early warning soil volatile pollutant detection drill bit of claim 1, characterized in that a heating mechanism is further arranged inside the detection drill bit.
6. The liquid pre-warning soil volatile contaminant detection drill bit of claim 5, wherein a screen (6) is provided at the gas inlet (1).
7. The liquid early warning soil volatile pollutant detection drill bit of claim 6, characterized in that, the filter screen (6) adopts the metal mesh, and heating mechanism is connected with filter screen (6) and is used for heating filter screen (6).
8. The liquid pre-warning soil volatile contaminant detection drill bit as claimed in claim 1, wherein a second valve (32) is provided in the air intake chamber (21) for opening and closing the air intake chamber (21).
9. A liquid-early-warning soil volatile pollutant detection device, which is characterized by comprising the liquid-early-warning soil volatile pollutant detection drill bit according to any one of claims 1 to 8.
10. The liquid pre-warning soil volatile contaminant detection device of claim 9, further comprising a vacuum pump in communication with the carrier gas outlet for creating a negative pressure within the gas outlet cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011473654.8A CN112649572A (en) | 2020-12-15 | 2020-12-15 | Soil volatile pollutant detection drill bit and detection device of liquid early warning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011473654.8A CN112649572A (en) | 2020-12-15 | 2020-12-15 | Soil volatile pollutant detection drill bit and detection device of liquid early warning |
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| Publication Number | Publication Date |
|---|---|
| CN112649572A true CN112649572A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011473654.8A Withdrawn CN112649572A (en) | 2020-12-15 | 2020-12-15 | Soil volatile pollutant detection drill bit and detection device of liquid early warning |
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| CN (1) | CN112649572A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024138519A1 (en) * | 2022-12-28 | 2024-07-04 | 江苏省无锡探矿机械总厂有限公司 | Sensor system for detecting volatile organic compounds in soil |
-
2020
- 2020-12-15 CN CN202011473654.8A patent/CN112649572A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024138519A1 (en) * | 2022-12-28 | 2024-07-04 | 江苏省无锡探矿机械总厂有限公司 | Sensor system for detecting volatile organic compounds in soil |
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Application publication date: 20210413 |