CN112782751A - Radon gas-based earthquake precursor monitoring system - Google Patents
Radon gas-based earthquake precursor monitoring system Download PDFInfo
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- CN112782751A CN112782751A CN202011584475.1A CN202011584475A CN112782751A CN 112782751 A CN112782751 A CN 112782751A CN 202011584475 A CN202011584475 A CN 202011584475A CN 112782751 A CN112782751 A CN 112782751A
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- 229910052704 radon Inorganic materials 0.000 title claims abstract description 31
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000012544 monitoring process Methods 0.000 title claims abstract description 29
- 239000002243 precursor Substances 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000000926 separation method Methods 0.000 claims abstract description 47
- 239000012530 fluid Substances 0.000 claims abstract description 29
- 239000003673 groundwater Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 11
- 235000013547 stew Nutrition 0.000 claims description 3
- 238000007872 degassing Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 6
- 238000009792 diffusion process Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 80
- 238000000034 method Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- BWJGGLDSZPWFHM-UHFFFAOYSA-N radon hydrate Chemical compound O.[Rn] BWJGGLDSZPWFHM-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/01—Measuring or predicting earthquakes
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A radon gas-based earthquake precursor monitoring system comprises a bubble separation device, and a constant flow device, an air pump, a gas analyzer and an ultrasonic degasser which are respectively connected with the bubble separation device, wherein the bubble separation device is used for degassing underground water fluid; a constant flow device operatively connected to the inflow port, configured to deliver a constant flow of groundwater fluid into the bubble separation device; the air pump is operatively connected with the air guide pipe and is configured to deliver constant gas fluid to the air guide pipe; an ultrasonic degasser configured to emit ultrasonic waves into the bubble separation device. The invention leads the airflow with constant flow into the underground water with constant flow, carries out degassing treatment on the underground water, has obvious degassing effect, carries out 'directional diffusion' treatment on bubbles, particularly tiny bubbles under the action of matching with a micro negative pressure and an ultrasonic degasser, leads the bubbles to be fully broken, and can fully collect radon gas, thus leading the monitoring and analyzing result to be stable and scientific.
Description
Technical Field
The invention relates to the field of earthquake monitoring, in particular to an earthquake precursor monitoring system based on radon gas.
Background
Earthquake is a frequent natural disaster in China, and relates to wide geographical range and great harm, so that various methods for monitoring abnormal phenomena occurring before earthquake precursor, namely earthquake, become important contents and hotspots of earthquake research. Research has shown that underground fluids such as ground water (well water, spring water, water contained in subterranean formations), oil and gas, and other gases may be stored in underground rock formations, and the chemical composition and certain physical quantities of these underground fluids are monitored by instruments, and the study of their changes can help people predict earthquakes.
The observation of water radon anomaly is a means of earthquake monitoring, radon is a rare gas and can migrate to a farther distance under the condition of good channel, and the radon can permeate along a structural zone together with fluid and vertically migrate from the deep part to the earth surface. When an earthquake occurs, radon gas flow from the underground grows as the dynamic load of the rock increases, and these properties of radon itself determine that radon can be used as one of the sensitive components for reflecting the earthquake precursor index. By observing the content of gas released from underground fluid of an earthquake, the earthquake trend analysis and the short-term earthquake situation are subjected to precursor prediction, so that the physical relation between stress and thermal change and corresponding concentration change in the process of regional structure activity is disclosed, and the information related to the inoculation and occurrence of the earthquake is obtained.
The existing degassing observation system mainly has the following problems: the degassing and gas-collecting efficiency is low, the gas production demand cannot be met, and the degassing and gas-collecting quantity is unstable; moreover, after bubbling, the generated bubbles cannot completely float to the liquid level and break, especially the bubbles with small volume have large surface stress and are difficult to break, so that radon gas cannot be released, and the detection data has errors, so that the monitoring result cannot scientifically and objectively reflect the micro-dynamics of the gas in the underground water.
Disclosure of Invention
In light of the problems raised by the background art, the present invention provides a radon gas based earthquake precursor monitoring system to solve, and the present invention will be further described.
A radon gas-based earthquake precursor monitoring system comprises a bubble separation device, and a constant flow device, an air pump, an air analyzer and an ultrasonic degasser which are respectively connected with the bubble separation device, wherein the bubble separation device comprises a cylinder body formed by integrally connecting an upper cylinder body and a lower cylinder body, the bottom of the lower cylinder body is provided with an inflow port, and the side part of the lower cylinder body is provided with an outflow port; an inner cylinder connected with the inlet is arranged in the lower cylinder, and a gas-liquid separation cavity is arranged in the inner cylinder; the gas guide pipe penetrates through the upper barrel, the bottom of the gas guide pipe extends downwards into the inner barrel, a bubbler is arranged at the bottom of the gas guide pipe, and an air outlet is also formed in the upper barrel; a constant flow device operatively connected to the inflow port, configured to deliver a constant flow of groundwater fluid into the bubble separation device; the air pump is operatively connected with the air guide pipe and is configured to deliver constant gas fluid to the air guide pipe; an ultrasonic degasser configured to emit ultrasonic waves into the bubble separation device.
Preferably, a gas flow meter is arranged on the gas flow pipeline from the gas pump to the bubble separation device, meanwhile, a venturi tube is arranged on the water flow pipeline connected to the bubble separation device by the constant flow device, a liquid flow meter is arranged at the necking position of the venturi tube so as to accurately obtain the fluid of the groundwater fluid, and the flow output of the gas pump and/or the constant flow device is controlled through the numerical display of the gas flow meter and the liquid flow meter.
Preferably, the air pressure of the upper cylinder is maintained in a slightly negative pressure state; when the air bubbles float to the surface of the liquid surface in the inner cylinder and then overflow from the inner cylinder, the micro negative pressure enables the air bubbles to expand and break rapidly, and radon is collected fully.
Preferably, the bubbler is arranged in the position close to the bottom in the inner cylinder, bubbles generated in the inner cylinder gradually float upwards and enter the upper cylinder, the action time is sufficient, and the radon gas is degassed sufficiently.
Preferably, the lower cylinder has a larger diameter than the upper cylinder, the upper cylinder extends downward to a position close to the bottom of the lower cylinder in the lower cylinder, and groundwater fluid flows through the upper cylinder and a gap between the lower part and the separation cylinder, wherein the trapped bubbles need to have sufficient floating time.
Preferably, the constant-current device comprises a box body, two partition plates are arranged in the box body, the bottoms and two sides of the partition plates are fixedly connected with the box body, the top of the partition plate is lower than the height of the box body, the box body is divided into a water inlet cavity, a standing cavity and an outflow cavity, a flow inlet is formed in the side wall of the water inlet cavity, the bottom of the standing cavity is connected to the flow inlet of the bubble separation device through a pipeline, an outflow opening is formed in the bottom of the outflow cavity, and the flow inlet is connected with a water pump. The height of the liquid level in the standing cavity is kept constant as the height of the partition plate, the height difference of the liquid level of the constant flow device and the liquid level of the bubble separation device is kept constant, and the flow entering the bubble separation device is constant.
Preferably, the top of the box body is provided with a cover plate made of transparent acrylic materials, the cover plate and the box body form a sealed space, the cover plate is provided with an air valve, and the air valve is connected to the upper barrel through an air flow pipeline and is in a micro-negative pressure state together with the upper barrel; the gas released was also counted, which favoured the collapse of the bubbles and would be left standing.
Preferably, a filter screen is further arranged in the water inlet cavity, the height of the filter screen is larger than that of the partition plate, and underground water is filtered in the water inlet cavity in advance before entering the standing cavity and the outflow cavity to filter impurities of the underground water.
Has the advantages that: compared with the prior art, the method realizes prediction before earthquake by monitoring radon, and realizes reliable measurement of the monitoring value by constant air flow ratio; the method has the advantages that the airflow with constant flow is introduced into the underground water with constant flow, the degassing treatment is carried out on the underground water, the degassing effect is obvious, the micro-negative pressure and the ultrasonic degasser are matched, the bubbles, particularly the micro-bubbles, are subjected to directional diffusion treatment, the bubbles are fully broken, the radon gas can be fully collected, and the monitoring and analyzing result is stable and scientific.
Drawings
FIG. 1: the invention has a structure schematic diagram;
FIG. 2: the structure schematic diagram of the bubble separation device;
FIG. 3: the structure schematic diagram of the constant current device;
in the figure: the bubble separation device 10 comprises an upper cylinder body 11, a lower cylinder body 12, an inner cylinder 13, a separation cavity 14, an air outlet 15, an air duct 16, a bubbler 17, an outflow port 18 and an inflow port 19; the constant flow device 20, the box body 21, the partition plate 22, the water inlet cavity 23, the standing cavity 24, the outflow cavity 25, the water inlet 26, the outflow 27, the cover plate 28, the air valve 29 and the filter screen 210; an air pump 30, a gas analyzer 40, and an ultrasonic degasser 50.
Detailed Description
A specific embodiment of the present invention will be described in detail with reference to fig. 1-3.
A radon gas-based earthquake precursor monitoring system is used for separating radon gas wrapped in underground water from underground water and comprises a bubble separation device 10, and a constant flow device 20, an air pump 30 and an air analyzer 40 which are respectively connected with the bubble separation device.
The bubble separation device 10 comprises a cylinder body formed by integrally connecting an upper cylinder body 11 and a lower cylinder body 12, wherein the cylinder diameter of the lower cylinder body 12 is larger than that of the upper cylinder body 11, the bottom of the lower cylinder body 12 is provided with a flow inlet 19, the side part of the lower cylinder body 12 is provided with a flow outlet 18, the flow inlet 19 is connected with a constant flow device 20, and the constant flow device 20 is configured to convey underground water fluid with constant flow into the bubble separation device 10; an inner cylinder 13 connected with the inlet 19 is arranged in the lower cylinder 12, and a gas-liquid separation cavity 14 is arranged in the inner cylinder 13; the gas analyzer further comprises a gas guide tube 16, the gas guide tube 16 penetrates through the upper cylinder 11, the bottom of the gas guide tube 16 extends downwards into the inner cylinder 13, a bubbler 17 is arranged at the bottom of the gas guide tube, the gas pump 30 is operatively connected with the gas guide tube 16 and is configured to deliver a constant flow of gas fluid to the gas guide tube 16, the upper cylinder 11 is further provided with a gas outlet 15, and the gas analyzer 40 is operatively connected with the gas outlet 15 and is used for analyzing gas at a separation position.
The underground water from the constant flow device 20 enters the gas-liquid separation cavity 14 of the inner cylinder 13 from the bottom of the lower cylinder 12 through the flow inlet 19 and overflows to the lower cylinder 12 from the top of the inner cylinder 13, the constant flow gas from the air pump 30 enters from the air guide pipe 16 and generates a large amount of bubbles after passing through the bubbler 17 immersed in the underground water, and the radon gas entrapped in the underground water flow is stripped from the underground water and accumulated upwards, and is conveyed to the gas analyzer 40 for radon content analysis under the action of the air pump.
In the monitoring process, in order to obtain a scientific and reliable detection value, the detection value should be stable, so that the ratio of the air blowing amount to the water inflow amount entering the bubble separation device 10 is required to be constant, i.e., the flow rate of the gas blown by the gas pump 30 and the liquid input by the constant flow device 20 is required to be constant, in practice, the constant power of the air pump 30 is controlled to make the air flow constant, in this embodiment, the flow of the air flow and the water flow is monitored in real time, a gas flow meter is provided on the gas flow line from the gas pump 30 to the bubble separation means 10, and at the same time, a venturi tube is arranged on a water flow pipeline connected with the bubble separation device 10 by the constant flow device 20, a liquid flowmeter is arranged at the necking part of the Venturi tube so as to accurately obtain the fluid of the groundwater fluid, the flow output of the air pump 30 and/or the constant flow device 20 is controlled through the numerical display of the gas flow meter and the liquid flow meter.
In the generation process of the bubbles, the sizes of the bubbles have certain randomness, the bubbles with larger volume are broken due to the gradual increase of the volume caused by the reduction of the liquid pressure in the floating process or float to the liquid level to be broken to release the internal gas, and for a large number of bubbles with smaller volume, the surface stress is stable and is not easy to break, the buoyancy borne by the bubbles is not enough to overcome the thrust generated by the flow of the underground water, and the bubbles flow out of the separation cylinder 11 along with the flow of the underground water, so that the monitoring result has errors.
Based on this, when the gas released by the air pump is pumped to the gas analyzer 40, the air pressure of the upper cylinder 11 is maintained in a micro-negative pressure state, so that when the bubbles float to the surface of the liquid surface in the inner cylinder 13 and then overflow from the inner cylinder 13, the bubbles are rapidly expanded and broken by the micro-negative pressure, and radon is sufficiently collected.
In order to make the bubbles and the groundwater fully act, the bubbler 17 is arranged in the position close to the bottom in the inner cylinder 13, the bubbles generated in the inner cylinder 13 gradually float upwards and enter the upper cylinder 11, the acting time is long enough, the radon gas is fully degassed, the gas is accumulated on the upper part of the upper cylinder 11, and the separated groundwater enters the upper cylinder 11 from the inner cylinder 13; in order to further ensure that all radon gas is collected, the upper cylinder body 11 extends downwards to be close to the bottom of the lower cylinder body 12 in the lower cylinder body 12, groundwater fluid flows through the upper cylinder body 11 and before the space between the lower part and the separation cylinder 11, wherein the entrapped bubbles need to have sufficient floating time, in the embodiment, the distance between the lower part of the inner cylinder 13 and the lower cylinder body 12 is 1/5-1/3 of the height of the inner cylinder 13, and the fluid flow speed is stable while the sufficient floating time of the bubbles is ensured.
In practice, for bubbles with a small volume, the buoyancy force applied to the bubbles is not enough to overcome the disturbance of surrounding fluid to the bubbles, and the bubbles probably cannot float to the surface of underground water fluid, so that radon gas partially wrapped by the bubbles cannot be collected, which is contrary to the scientific requirement of the test result; on the basis of the contradiction that the gas fluid with a constant flow rate is introduced into the underground water fluid with a constant flow rate is an essential technical means of the invention, micro bubbles are necessarily generated, and in the embodiment, the ultrasonic degasser 50 is arranged at the top of the upper cylinder 11, the ultrasonic degasser 50 emits ultrasonic waves into the cylinder, bubbles, particularly micro bubbles, in the underground water fluid are diffused and grown, and are forced to float to the surface of the liquid surface to be broken, so that the gas is released.
The ultrasonic degasser 50 functions according to the following principle: when ultrasonic waves are introduced into a solution, alternating pressure is generated, and when the sound waves used for cavitation threshold are transmitted in the liquid, cavitation bubbles can be generated, and the mass transfer rate of gas from the solution to the bubbles can be obviously improved. Cavitation bubbles are generated by tiny gas nuclei in a solution, which are generated by the action of tensile stress (negative pressure) in a sparse phase of sound waves, and if the tensile stress continues to exist after the formation of the cavitation bubbles, the cavitation bubbles expand to many times the original size, in which case the cavitation bubbles maintain a spherical structure and then grow, vibrate, and collapse continuously.
When ultrasonic wave acts, gas components in the solution can enter cavitation bubbles through the directional diffusion of a gas-liquid interface, the cavitation bubbles enter a growth stage, and when the cavitation bubbles collapse on the surface of the solution, gas can escape from the bubbles, so that the gas in the tiny bubbles can be collected; set up in the position that is close to the bottom in the inner tube 13 by aforementioned bubbler 17, it is longer to know the time length that the cavitation bubble that increases and obtain through ultrasonic action diffusion floats to the liquid surface, and the "directional diffusion" effect of bubble is obvious, and the microbubble obtains abundant expansion before the come-up to the liquid surface, and its bubble surface stress because of leading to the increase of bubble, vibration at the ultrasonic wave, its surface stress is uneven, and in the effect of little negative pressure of cooperation, the bubble is in the come-up to the liquid surface and is inevitable to break, has ensured the complete collection of radon gas.
In a worse embodiment, the constant flow device 20 includes a water pump and a constant flow valve connected to the water pump, a constant flow of groundwater is input to the bubble separation device 10 through the action of the constant flow valve, in practice, the water pump pumps the groundwater in such a way that the groundwater will entrain a certain amount of gas and the gas will be partially vaporized when the fluid impacts the blades of the water pump, so that the fluid inevitably contains part of the gas, and there is an error in controlling the constant flow of groundwater, based on this, the constant flow device 20 performs a gas standing separation operation on the groundwater in advance, so that the groundwater flowing into the bubble separation device 10 does not contain the gas, and the specific scheme is as follows:
constant current device 20 includes box 21, is equipped with two baffles 22 in the box 21, baffle 22 bottom and both sides and box 21 fixed connection, and the top is less than the height of box 21, with the three cavities of separating into intake antrum 23, the chamber 24 that stews, the chamber 25 that effuses in the box 21, lie in the intake antrum 23 lateral wall and be equipped with inlet 26, stew 24 bottom in chamber and pass through pipe connection to the inlet 19 of bubble separator 10, the chamber 25 bottom of effusing is provided with outlet 27, inlet 26 connects the water pump. When the starting is started, the water pump pumps the groundwater into the water inlet cavity 23, the groundwater overflows the partition plate 22 and enters the standing cavity 24 along with the rising of the groundwater in the water inlet cavity 23, the standing cavity 24 is gradually filled with the groundwater, overflows another partition plate and enters the water outlet cavity 25, the groundwater flows out of the constant flow device 20 from the water outlet 27, the liquid level of the standing cavity 24 is higher than the height of the inner cylinder 13 according to the principle of a communicating vessel, and the bubble separation device 10 is started.
After the underground water is introduced into the box body 21 through the water pump, the underground water gradually overflows to the outflow cavity 25, the entrained gas floats upwards and is separated from underground water fluid, so that the pipe section from the standing cavity 24 to the bubble separation device 10 is a full water column all the time, and is divided into three chambers through the partition plates, so that the liquid level of the standing cavity 24 is constant, and the constant control of the flow of the underground water is maintained.
When the gas wrapped by the gas-collecting device floats upwards and is separated from underground water fluid, the gas-collecting device is consistent with the effect in the bubble separation device 10, a small amount of radon gas is taken away, the radon gas taken away is taken into statistics in the embodiment, the top of the box body 21 is provided with the cover plate 28 made of transparent acrylic materials, the cover plate 28 and the box body 21 form a sealed space, the cover plate 28 is provided with the gas valve 29, the gas valve 29 is connected to the upper barrel body 11 through a gas flow pipeline, the gas valve and the upper barrel body 11 are in a micro-negative pressure state together through the gas extraction device, and the gas which is beneficial to the breaking of bubbles and is released in.
Further, a filter screen 210 is further arranged in the water inlet cavity 23, the height of the filter screen 210 is larger than that of the partition plate 22, and groundwater is filtered in the water inlet cavity 23 in advance before entering the standing cavity 24 and the outflow cavity 25 to filter impurities.
The method realizes the prediction before the earthquake by monitoring radon, and realizes the reliable measurement of the monitoring value by constant air flow ratio; the method has the advantages that the airflow with constant flow is introduced into the underground water with constant flow, the degassing treatment is carried out on the underground water, the degassing effect is obvious, the micro-negative pressure and the ultrasonic degasser are matched, the bubbles, particularly the micro-bubbles, are subjected to directional diffusion treatment, the bubbles are fully broken, the radon gas can be fully collected, and the monitoring and analyzing result is stable and scientific.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The radon gas-based earthquake precursor monitoring system is characterized by comprising a bubble separation device (10), and a constant flow device (20), an air pump (30), a gas analyzer (40) and an ultrasonic degasser (50) which are respectively connected with the bubble separation device, wherein:
the bubble separation device (10) comprises a cylinder body formed by integrally connecting an upper cylinder body (11) and a lower cylinder body (12), wherein the bottom of the lower cylinder body (12) is provided with a flow inlet (19), and the side part of the lower cylinder body is provided with a flow outlet (18); an inner cylinder (13) connected with the inlet (19) is arranged in the lower cylinder (12), and a gas-liquid separation cavity (14) is arranged in the inner cylinder (13); the gas analyzer further comprises a gas guide pipe (16), the gas guide pipe (16) penetrates through the upper cylinder body (11), the bottom of the gas guide pipe (16) extends downwards into the inner cylinder body (13), a bubbler (17) is arranged at the bottom of the gas guide pipe, a gas outlet (15) is further formed in the upper cylinder body (11), the gas analyzer (40) is operatively connected to the gas outlet (15), and gas at the separation position is analyzed;
a constant flow device (20) operatively connected to the inlet (19) configured to deliver a constant flow of groundwater fluid into the bubble separation device (10);
the air pump (30) is operatively connected with the air duct (16) and is configured to deliver a constant gas fluid to the air duct (16);
an ultrasonic degasser (50) configured to emit ultrasonic waves into the bubble separation device (10).
2. The seismic precursor monitoring system of claim 1, wherein: a gas flow meter is arranged on an airflow pipeline from the air pump (30) to the bubble separation device (10), a venturi tube is arranged on a water flow pipeline connected to the bubble separation device (10) by the constant flow device (20), and a liquid flow meter is arranged at the necking part of the venturi tube; the flow output of the air pump (30) and/or the constant flow device (20) is controlled through the numerical display of the gas flow meter and the liquid flow meter.
3. The seismic precursor monitoring system of claim 1, wherein: the air pressure of the upper cylinder (11) is maintained in a micro negative pressure state.
4. The seismic precursor monitoring system of claim 3, wherein: the bubbler (17) is arranged in the inner cylinder (13) close to the bottom.
5. The seismic precursor monitoring system of claim 4, wherein: the cylinder diameter of the lower cylinder body (12) is larger than that of the upper cylinder body (11), and the upper cylinder body (11) extends downwards to the bottom close to the lower cylinder body (12) in the lower cylinder body (12).
6. The seismic precursor monitoring system of claim 5, wherein: the interval length between the lower part of the inner cylinder (13) and the lower cylinder (12) is 1/5-1/3 of the height of the inner cylinder (13).
7. The seismic precursor monitoring system of any one of claims 1-6, wherein: constant current device (20) are equipped with two baffles (22) including box (21) in box (21), baffle (22) bottom and both sides and box (21) fixed connection, the top is less than the height of box (21), divide into intake antrum (23) in box (21), the chamber (24) of stewing, three cavity in play flow chamber (25), it is equipped with influent stream mouth (26) to be located intake antrum (23) lateral wall, it is connected to influent stream mouth (19) of bubble separator (10) through the pipeline to stew chamber (24) bottom, it is provided with play flow mouth (27) to go out flow chamber (25) bottom, water pump is connected in influent stream mouth (26).
8. The seismic precursor monitoring system of claim 7, wherein: the device is characterized in that a cover plate (28) is arranged at the top of the box body (21), a sealed space is formed between the cover plate (28) and the box body (21), an air valve (29) is arranged on the cover plate (28), the air valve (29) is connected to the upper barrel body (11) through an air flow pipeline, and the air valve and the upper barrel body (11) are in a micro-negative pressure state.
9. The seismic precursor monitoring system of claim 8, wherein: a filter screen (210) is further arranged in the water inlet cavity (23), and the height of the filter screen (210) is larger than that of the partition plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584475.1A CN112782751A (en) | 2020-12-28 | 2020-12-28 | Radon gas-based earthquake precursor monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584475.1A CN112782751A (en) | 2020-12-28 | 2020-12-28 | Radon gas-based earthquake precursor monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN112782751A true CN112782751A (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011584475.1A Withdrawn CN112782751A (en) | 2020-12-28 | 2020-12-28 | Radon gas-based earthquake precursor monitoring system |
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| Country | Link |
|---|---|
| CN (1) | CN112782751A (en) |
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2020
- 2020-12-28 CN CN202011584475.1A patent/CN112782751A/en not_active Withdrawn
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Application publication date: 20210511 |
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| WW01 | Invention patent application withdrawn after publication |