CN215910197U - Gather soil greenhouse gas's automatic gas device of getting - Google Patents
Gather soil greenhouse gas's automatic gas device of getting Download PDFInfo
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- CN215910197U CN215910197U CN202122409884.4U CN202122409884U CN215910197U CN 215910197 U CN215910197 U CN 215910197U CN 202122409884 U CN202122409884 U CN 202122409884U CN 215910197 U CN215910197 U CN 215910197U
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- outer sleeve
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- outlet pipe
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- 239000007789 gas Substances 0.000 title claims abstract description 244
- 239000002689 soil Substances 0.000 title claims abstract description 23
- 239000005431 greenhouse gas Substances 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 230000004720 fertilization Effects 0.000 description 2
- 239000002680 soil gas Substances 0.000 description 2
- 238000009333 weeding Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an automatic gas taking device for collecting soil greenhouse gas, which comprises an outer sleeve with an opening at the lower end, a gas taking cover arranged at the upper end of the outer sleeve in a sealing manner, and an automatic gas taking part arranged in the outer sleeve, wherein a gas outlet of the automatic gas taking part is connected with a gas outlet pipe extending out of the outer sleeve, the gas outlet end of the gas outlet pipe is connected with a gas bag, a through hole for the gas outlet pipe to pass through is formed in the wall of the outer sleeve or the gas taking cover, and the wall of the through hole and the gas outlet pipe are arranged in a sealing manner. The automatic gas taking device can take gas automatically, has high working efficiency, does not need manual timing, reduces the workload of workers and saves the labor cost; the reverse rotation of the turbine fan is utilized to uniformly mix the gas in the gas taking box, so that the taken gas is the actual gas mixed inside; the gas taking process is carried out in the gas taking box, so that the mixing of internal gas and the outside is avoided, and the accuracy of test data is ensured.
Description
Technical Field
The utility model relates to the technical field of soil gas collection, in particular to an automatic gas taking device for collecting soil greenhouse gas.
Background
Study of soil greenhouse gas (CO)2、N2O、CH4) The emission needs to get gas with static case of getting gas, and traditional case of getting gas includes two parts, the gas tank base of latter half and the lid of upper half, has two holes identical with the rubber buffer on the lid. Before air is taken, one hole is sealed by a solid rubber plug, the other hole is connected with a rubber plug of a tee joint, and the other two ends of the tee joint are respectively connected with an injector and an air taking bottle (or an air taking bag).
1. Before air is taken, the base of the air box is buried in the soil for 10cm, and the crops do not move any more in the growth period. And vaseline is smeared on the outer wall of the rubber plug and the wall of the hole of the cover of the air box, so that the sealing is ensured to be airtight.
2. During sampling, the cover is buckled, a small amount of water is added into the groove, and the cover is slightly rotated to seal the groove, so that the airtight environment in the air box is ensured.
3. Sampling
Sampling at 0 min: after the air box is covered, a 20ml injector is connected with the tee joint, the direction of the tee joint is rotated to enable the injector to be communicated with the space in the air box, 20ml of air in the space of the air box is extracted by the injector, the tee joint is rotated to enable the air box to be sealed, the air in the injector is injected into a 20ml air bag, the air bag is sealed, and the air bag is taken back to a laboratory to be tested.
Sampling for 20 min: when a timing stopwatch rings, collecting samples for 20min, connecting a 20ml injector with the tee joint, rotating the direction of the tee joint to enable the injector to be communicated with the space in the gas box, extracting 20ml of gas in the space of the gas box by using the injector, rotating the tee joint to enable the gas box to be sealed, injecting the gas in the injector into a 20ml gas bag, sealing the gas bag, and bringing the gas bag back to a laboratory to be tested;
sampling for 40 min: when a timing stopwatch rings, sample collection is carried out for 40min, a 20ml injector is connected with a tee joint, the direction of the tee joint is rotated to enable the injector to be communicated with the space in the air box, 20ml of air in the space of the air box is extracted by the injector, the tee joint is rotated to enable the air box to be kept closed, the air in the injector is injected into a 20ml air bag, and the air bag is sealed and is taken back to a laboratory to be measured.
However, the above-mentioned conventional gas extraction box has the following disadvantages to be improved:
1. the extracted gas is not pure, and the gas absorbed in the injector is easy to exchange with air, so that the extracted gas is not the soil gas to be measured, and the deviation of the test data is caused.
2. The piston is not tightly connected, so that the gas in the gas taking box cannot be completely sucked by the injector.
3. When the tee joint is switched, misoperation is easily caused, and gas taking failure is caused.
4. The gas in the gas taking box is not fully mixed, so that the test error is easy to cause to be larger.
5. The air intake quantity error is large and the efficiency is low due to the fact that manual operation is needed, manual timing is needed, and manpower is wasted.
6. The gas tank base needs to be buried in soil and cannot move, and the gas tank base is 10cm higher than the horizontal plane of the soil, so that field operations such as fertilization, weeding, mechanical harvesting and the like are affected.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the automatic gas taking device for collecting the soil greenhouse gas, which solves the problems, ensures the consistency of the taken gas and the required gas and improves the accuracy of test data.
The utility model is realized by the following technical scheme, and provides an automatic gas taking device for collecting soil greenhouse gas, which comprises an outer sleeve with an opening at the lower end, a gas taking cover arranged at the upper end of the outer sleeve in a sealing manner, and an automatic gas taking part arranged in the outer sleeve, wherein a gas outlet of the automatic gas taking part is connected with a gas outlet pipe extending out of the outer sleeve, a gas outlet end of the gas outlet pipe is connected with an air bag, a through hole for the gas outlet pipe to pass through is formed in the wall of the outer sleeve or the gas taking cover, and the hole wall of the through hole and the gas outlet pipe are arranged in a sealing manner.
This scheme is when using, buries the outer sleeve in soil, and the action through the automatic gas of getting the part inhales the air pocket with the gas in the outer sleeve, puts the sample position and sets up instrument parameter with the automatic device of getting gas after, gets gas automatically, gets the gas process and does not need artifical the participation, has avoided the mixture with outside air moreover, has guaranteed test data's accuracy, has reduced the personnel selection cost.
Preferably, the air outlet pipe is provided with a pressure sensor and an electromagnetic valve, and the pressure sensor is electrically connected with the electromagnetic valve and the automatic air taking part. According to the optimized scheme, the pressure of gas in the gas bag is detected by arranging the pressure sensor, when the pressure reaches a set value, the electromagnetic valve is automatically closed, and the automatic gas taking part automatically stops to avoid the gas bag from being burst.
And as optimization, a control panel electrically connected with the electromagnetic valve is arranged on the upper surface of the gas taking cover, a time relay is arranged in the control panel, and the time relay is electrically connected with the gas taking device. This optimization scheme is through setting up control panel, conveniently controls getting gas device and solenoid valve, through setting up time relay, is convenient for regularly to the action of getting gas part automatically, has improved the automation level of getting the gas operation.
And as optimization, the gas taking cover is also provided with a temperature and humidity real-time measuring device extending to the inner hole of the outer sleeve and a display for displaying the temperature and the humidity measured by the temperature and humidity real-time measuring device. The setting of this optimization scheme, the staff of being convenient for in time learns the temperature and the humidity of the inside gas of outer sleeve, increases the comprehensiveness of data.
Preferably, the inner sleeve is provided with an upper end and a lower end which are both opened, the upper end of the inner sleeve extends to the inner hole of the outer sleeve from the lower end of the outer sleeve along the axial direction, and the outer wall of the inner sleeve is in sealing sliding connection with the inner wall of the outer sleeve. This optimization scheme is through setting up the inner skleeve, when not getting gas operation, with outer skleeve and inner skleeve shrink, wholly bury under soil, avoid influencing field operations such as fertilization, weeding, when needing to get gas, upwards promote the outer skleeve, can get gas operation after the tube coupling.
Preferably, the automatic air intake part is a turbofan, and a plurality of air outlets uniformly distributed along the circumferential direction are formed in the side wall of the shell of the turbofan. This preferred scheme chooses turbofan as the automatic part of getting gas for use, utilizes the characteristics that turbofan axial admits air, radially gives vent to anger, conveniently improves the regional homogeneity of getting gas to when turbofan reversal, can play the stirring effect to the inside gas of inner sleeve and outer sleeve, improve the homogeneity of gas mixture.
The scheme also provides a method for collecting soil greenhouse gases, which comprises the following steps:
setting gas taking interval time and gas taking amount, wherein the gas taking interval time is 0min, 20min and 40min respectively, and the gas taking amount is 20ml each time, so that gas taking work can be started;
and (3) 0 minute: the turbofan rotates reversely to enable the gas in the gas taking box formed by the inner sleeve and the outer sleeve to be fully mixed, then the turbofan rotates forwards to suck the gas in the gas taking box from the gas inlet along the axial direction, and enters the first gas outlet pipe from the first gas outlet along the radial direction, and enters the first gas pocket through the pressure sensor and the electromagnetic valve on the first gas outlet pipe in sequence, when the pressure in the first gas pocket reaches a specified value, the electromagnetic valve on the first gas outlet pipe is automatically closed, the motor of the turbofan stops rotating, and the first gas taking is completed;
20 minutes: the turbofan rotates reversely firstly to enable the gas in the gas taking box to be fully mixed, then the turbofan rotates forwards to suck the gas in the gas taking box from the gas inlet along the axial direction, and then the gas enters the second gas outlet pipe from the second gas outlet along the radial direction, and then enters the second gas bag through the pressure sensor and the electromagnetic valve on the second gas outlet pipe in sequence, when the pressure in the second gas bag reaches a specified value, the electromagnetic valve on the second gas outlet pipe is automatically closed, the motor of the turbofan stops rotating, and therefore the gas taking for the second time is completed.
And (3) 40 minutes: the turbofan rotates reversely to enable the gas in the gas taking box to be fully mixed, then the turbofan rotates forwards to suck the gas in the gas taking box from the gas inlet along the axial direction and enter a third gas outlet pipe from a third gas outlet along the radial direction, and then the gas enters a third gas bag through a pressure sensor and an electromagnetic valve on the third gas outlet pipe in sequence;
after each air-taking is finished, the temperature and humidity information displayed by the display on the air-taking cover is recorded, and after the three air-taking is finished, the air-taking cover is opened to take out each air bag.
The utility model has the beneficial effects that:
1. after the gas taking device is installed and the parameters are set, the gas taking process does not need manual operation, and gas can be automatically taken at regular time, so that the working efficiency is high, manual timing is not needed, and the labor cost is saved;
2. the automatic gas taking device can set gas taking time, so that the gas taking intervals in each gas taking box are the same, and the accuracy of the interval time is improved;
3. the reverse rotation of the turbine fan is utilized to stir and mix the gas in the gas taking box, so that the taken gas is the actual gas after internal mixing;
4. the automatic gas taking process is carried out in the gas taking box, so that the mixing of internal gas and the outside is avoided, and the accuracy of test data is ensured;
5. the automatic air-taking device can measure the temperature and humidity of the soil while taking air;
6. the lifting base of the automatic gas taking device can ensure that the base does not influence the mechanical operation in the field in the service life of the gas tank.
Drawings
FIG. 1 is a schematic view of the structure of the gas extraction box of the present invention;
FIG. 2 is a schematic view of the distribution of the outlet pipe of the present invention;
shown in the figure:
1. the gas-taking device comprises an inner sleeve, 2, an outer sleeve, 3, a gas-taking cover, 4, an automatic gas-taking part, 5, a gas outlet pipe, 6, a gas-taking box, 7, a pressure sensor, 8, an electromagnetic valve, 9 and a gas bag.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in figure 1, the gas taking device for collecting the soil greenhouse gas comprises an outer sleeve 2 with an opening at the lower end, a gas taking cover 3 arranged at the upper end of the outer sleeve in a sealing mode, an automatic gas taking part 4 arranged in the outer sleeve, and an inner sleeve 1 with the upper end and the lower end open, wherein the upper end of the inner sleeve extends to an inner hole of the outer sleeve from the lower end of the outer sleeve along the axial direction, the outer wall of the inner sleeve is in sealing sliding connection with the inner wall of the outer sleeve, a gas taking box 6 is formed by the inner sleeve and the outer sleeve, a sealing ring is arranged on the outer wall of the inner sleeve, and after the outer sleeve is lifted upwards, the outer sleeve is prevented from falling down by self by using the friction force between the inner sleeve and the outer sleeve.
The gas outlet of the automatic gas taking part is connected with a gas outlet pipe 5 extending out of the outer sleeve, a through hole for the gas outlet pipe to pass through is formed in the wall of the outer sleeve or the side wall of the gas taking cover, and the hole wall of the through hole and the gas outlet pipe are arranged in a sealing mode.
The air bag 9 is connected to the end detachably of giving vent to anger of outlet duct, and the air bag can be changed as required to install pressure sensors 7 and solenoid valve 8 on the outlet duct, the solenoid valve is located between air bag and the pressure sensors, has guaranteed the accuracy of the inside pressure of air bag when the solenoid valve cuts off, equal electric connection of pressure sensors and solenoid valve, automatic gas portion of getting, through the stereoplasm rubber tube intercommunication between pressure sensors and the solenoid valve.
The upper surface of the gas taking cover is provided with a control panel electrically connected with the electromagnetic valve, a time relay is arranged in the control panel and electrically connected with the automatic gas taking part, so that the gas taking at regular time and the opening and closing of the electromagnetic valve are realized. The air intake cover is also provided with a power supply for supplying power to the electrical elements.
The gas taking cover is also provided with a temperature and humidity real-time measuring device extending to the inner hole of the outer sleeve and a display for displaying the temperature and the humidity measured by the temperature and humidity real-time measuring device, and the temperature and humidity real-time measuring device comprises a temperature sensor and a humidity sensor and is used for measuring and taking the temperature and the humidity of the gas in the gas taking box.
As a preferred scheme, the automatic gas taking part of this embodiment is a turbofan, a casing of the turbofan wraps an impeller and is provided with an axial gas inlet and a radial gas outlet, a side wall of the casing of the turbofan is provided with three gas outlets uniformly distributed along the circumferential direction, the three gas outlets are respectively a first gas outlet, a second gas outlet and a third gas outlet, the first gas outlet is communicated with a first gas pocket through a first gas outlet pipe, the second gas outlet is communicated with a second gas pocket through a second gas outlet pipe, and the third gas outlet is communicated with a third gas pocket through a third gas outlet pipe. The motor of the turbofan is a high-speed motor to ensure that gas discharged from the gas outlet has certain pressure, and the gas taking requirement can be met.
The method for collecting the soil greenhouse gases by using the automatic gas taking device comprises the following steps:
the outer sleeve is lifted to a specified height of 10cm, the air taking cover is connected with the three air taking bags and is connected with the outer sleeve, the specified air taking interval time and air taking amount are set through the control panel, the air taking interval time is respectively 0min, 20min and 40min, and the air taking amount is 20ml, so that air taking work can be started;
and (3) 0 minute: the high-speed motor drives the turbine fan to rotate reversely firstly, so that the gas in the gas taking box 6 formed by the inner sleeve and the outer sleeve is fully mixed, and the turbine fan blows air into the gas box at the moment to stir and mix the gas in the gas box; when gas taking starts, the turbofan rotates forwards to suck gas in the gas taking box from the gas inlet along the axial direction, and the gas enters the first gas outlet pipe from the first gas outlet along the radial direction and sequentially enters the first gas bag through the pressure sensor and the electromagnetic valve on the first gas outlet pipe;
20 minutes: the turbofan rotates reversely to enable the gas in the gas taking box to be fully mixed, then the turbofan rotates forwards to suck the gas in the gas taking box from the gas inlet along the axial direction and enter a second gas outlet pipe from a second gas outlet along the radial direction, and then the gas enters a second gas bag through a pressure sensor and an electromagnetic valve on the second gas outlet pipe in sequence;
and (3) 40 minutes: the turbofan rotates reversely to enable the gas in the gas taking box to be fully mixed, then the turbofan rotates forwards to suck the gas in the gas taking box from the gas inlet along the axial direction and enter a third gas outlet pipe from a third gas outlet along the radial direction, and then the gas enters a third gas bag through a pressure sensor and an electromagnetic valve on the third gas outlet pipe in sequence;
after the air taking is finished every time, the temperature and humidity information displayed by the display on the air taking cover is recorded, after the air taking is finished for three times, the air taking cover is opened, each air bag is taken out, a new air taking bag is replaced, and the air taking cover is moved to other places to continue air taking.
The automatic gas taking device and the gas taking method do not need manual participation in the gas taking process, so that the human resources are saved; the gas can be automatically taken at fixed time, so that the working efficiency is improved; the gas in the gas taking box can be fully mixed, so that the data error is reduced; the outer sleeve can ascend and descend as required, so that the influence on agricultural work is reduced; the temperature and humidity of the soil can be measured.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a gather soil greenhouse gas's automatic gas device of getting which characterized in that: the automatic gas taking device comprises an outer sleeve (2) with an opening at the lower end, a gas taking cover (3) arranged at the upper end of the outer sleeve in a sealing manner, and an automatic gas taking part (4) arranged on the gas taking cover, wherein a gas outlet of the automatic gas taking part is connected with a gas outlet pipe (5) extending out of the outer sleeve, a gas outlet end of the gas outlet pipe is connected with a gas bag (9), a through hole for the gas outlet pipe to pass through is formed in the wall of the outer sleeve or the gas taking cover, and the hole wall of the through hole and the gas outlet pipe are arranged in a sealing manner.
2. The automatic gas taking device for collecting soil greenhouse gas as claimed in claim 1, wherein: install pressure sensor (7) and solenoid valve (8) on the outlet duct, pressure sensor and solenoid valve, the equal electric connection of automatic gas portion of getting.
3. The automatic gas taking device for collecting soil greenhouse gas as claimed in claim 2, wherein: the upper surface of the gas taking cover is provided with a control panel electrically connected with the electromagnetic valve, a time relay is arranged in the control panel, and the time relay is electrically connected with the gas taking device.
4. The automatic gas taking device for collecting soil greenhouse gas as claimed in claim 3, wherein: the gas taking cover is also provided with a temperature and humidity real-time measuring device extending to the inner hole of the outer sleeve and a display for displaying the temperature and the humidity measured by the temperature and humidity real-time measuring device.
5. The automatic gas taking device for collecting soil greenhouse gas as claimed in claim 1, wherein: the inner sleeve is characterized by further comprising an inner sleeve (1) with the upper end and the lower end both open, the upper end of the inner sleeve extends to an inner hole of the outer sleeve from the lower end of the outer sleeve along the axial direction, and the inner wall of the outer sleeve is in sealing sliding connection with the outer wall of the inner sleeve.
6. The automatic gas taking device for collecting soil greenhouse gas as claimed in claim 1, wherein: the automatic air taking part is a turbofan, and a plurality of air outlets uniformly distributed along the circumferential direction are formed in the side wall of a shell of the turbofan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409884.4U CN215910197U (en) | 2021-10-08 | 2021-10-08 | Gather soil greenhouse gas's automatic gas device of getting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409884.4U CN215910197U (en) | 2021-10-08 | 2021-10-08 | Gather soil greenhouse gas's automatic gas device of getting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215910197U true CN215910197U (en) | 2022-02-25 |
Family
ID=80311543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122409884.4U Expired - Fee Related CN215910197U (en) | 2021-10-08 | 2021-10-08 | Gather soil greenhouse gas's automatic gas device of getting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215910197U (en) |
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2021
- 2021-10-08 CN CN202122409884.4U patent/CN215910197U/en not_active Expired - Fee Related
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Granted publication date: 20220225 |
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