A soil stable isotope fixed-point delivery device for reducing bottom leakage

Abstract

The present invention belongs to the technical field of soil stable isotope tracing, and provides a soil stable isotope fixed-point delivery device for reducing bottom leakage, including a water storage bag, a connecting box, an inflatable bag, a control system and an injection system; the injection system is composed of a syringe, a flat-top injection head and a water filling hole located at the top of the water storage bag, and the control system is composed of a remote controller, a delivery motor, a puncture motor and a pressure sensor. The remote controller is connected to the drug delivery motor to instruct the drug delivery motor to work, and when the air pressure in the inflatable bag reaches a predetermined value, the pressure sensor is triggered, and the pressure sensor sends an instruction to the puncture motor to puncture the bottom of the water storage bag, and the isotope tracer flows into the connecting box, and the isotope tracer flows out of the connecting box through the water guide hole and flows into the soil layer along the expanded inflatable bag. The device of the present invention is simple and effective, and can accurately and quickly deliver the isotope tracer to the target soil layer over a large area without "pollution", and can also effectively reduce the amount of stable isotope tracer and reduce the test cost.

Description

Technical Field

[0001] The invention belongs to the technical field of soil stable isotope tracing, and in particular relates to a soil stable isotope fixed-point delivery device for reducing bottom leakage. Background Art

[0002] The hydrological process of the groundwater-soil water-vegetation-atmosphere system is an important part of the global hydrological cycle, and soil water is the most active part of water exchange in this system. At the same time, this hydrological cycle model is also the theoretical basis for ensuring human water safety, promoting agricultural production, guiding saline-alkali land management and ecological restoration in arid and semi-arid areas.

[0003] The hydrological cycle in the groundwater-soil water-vegetation system is affected by many factors such as stratum and soil structure, seasonal changes, temperature differences, etc. It has great randomness and uncertainty, and is greatly affected by the region. Hydrogen and oxygen stable isotopes are regarded as the "fingerprint" of water, providing a new means of observation for studying the spatiotemporal distribution of water resources and the water cycle process in the groundwater-soil water-vegetation-atmosphere system. Different atoms of the same element with the same number of protons and different numbers of neutrons are isotopes of each other. The hydrogen stable isotopes naturally present in water molecules are 1 There are two types of oxygen stable isotopes: H (hydrogen) and D (deuterium). 16 O. 17 O. 18 O, D (deuterium), 17 O. 18 O three isotopes are stable, will not cause radioactive pollution to the natural environment, and the content in nature is extremely low. Artificial release of high-abundance hydrogen and oxygen stable isotope tracers, D (deuterium) or 17 O or 18 Water molecules labeled with hydrogen and oxygen stable isotopes will migrate with soil water under the change of natural water potential. By placing hydrogen and oxygen stable isotope tracers at fixed points and sampling and detecting the changes in hydrogen and oxygen stable isotope abundance of surrounding water, the migration law of groundwater or soil water can be found out. The traditional hydrogen and oxygen isotope release technology is to inject hydrogen and oxygen isotopes directly into the borehole or inject hydrogen and oxygen isotopes into multiple balloons, put the balloons into the borehole, and then put in a sharp object to puncture the balloons. Both methods will more or less leave hydrogen and oxygen isotope tracers on the ground or the borehole wall, forming "pollution" on the surrounding experimental environment, which may have a significant impact on the experimental results or directly lead to erroneous conclusions. In addition, these two methods will cause most of the isotope tracers to leak directly to the bottom of the borehole, and the vertical distribution of hydrogen and oxygen isotope tracers is larger, while the horizontal diffusion is smaller, which is different from the large-area horizontal distribution of hydrogen and oxygen isotope tracers we expect. Summary of the invention

[0004] The purpose of the present invention is to provide a soil stable isotope fixed-point delivery device for reducing bottom leakage. The device is simple and effective, and can accurately, quickly and zero "pollution" deliver isotope tracers to a large area of ​​the target soil layer. It can also effectively reduce the amount of stable isotope tracers used and reduce test costs.

[0005] The fixed-point delivery device includes a water storage bag, a connecting box, an inflatable bag, a control system and an injection system;

[0006] The injection system is composed of a syringe, a flat-top injection head and a water filling hole located at the top of the water storage bag. The syringe is used to quantitatively absorb the isotope tracer. The syringe is connected to the flat-top injection head. The flat-top injection head can enter the water filling hole to inject the isotope tracer into the water storage bag.

[0007] The control system consists of a remote control, a dosing motor, a puncture motor and a pressure sensor. The remote control is connected to the dosing motor to instruct the dosing motor to push the medicine into the inflatable bag. The medicine reacts with the reserved substance in the inflatable bag to generate gas to rapidly expand the inflatable bag. After the inflatable bag expands, it squeezes against the borehole wall to form a closed water-blocking barrier in the borehole. When the air pressure in the inflatable bag reaches a predetermined value, the pressure sensor is triggered. The pressure sensor sends an instruction to the puncture motor connected to it to puncture the bottom of the water storage bag. The isotope tracer flows from the water storage bag into the connecting box. A circle of water guide holes are designed on the bottom side of the connecting box. The isotope tracer flows out of the connecting box through the water guide holes and flows into the surrounding soil layers along the expanded inflatable bag.

[0008] In the above technical solution, the fixed-point delivery device also includes a water guide plate, and the bottom of the connecting box is connected to the water guide plate; the upper part of the water guide plate is an arc-shaped water guide plate, which is used for the diversion and water guidance of the isotope tracer, and a square window is opened at the bottom to be connected to the dosing motor and the pressure sensor, and water flow sensors are designed around it, and an alarm and a signal transmitter are connected to the water flow sensor. When the water flow sensor senses the water flow, the alarm will sound an alarm, the signal transmitter will send a signal, and the alarm light on the remote control will flash.

[0009] In the above technical solution, the water storage bag is a closed rubber airbag, the lower part of which is connected to the connecting box, and the upper part of which is slightly harder rubber with a certain strength. The water filling hole provided at the top is a rubber tube which is tight inside and loose outside. In a natural state, the inner hole of the water filling hole can be tightened under the action of its own elastic force to play a sealing role. When the water storage bag is filled with the isotope tracer, the inner hole of the water filling hole will be tightened under the action of water pressure to play a good water-blocking role.

[0010] In the above technical solution, a hanging nose is also provided at the top of the water storage bag, and a thin line can be tied to the hanging nose to place the fixed-point delivery device into the drill hole.

[0011] In the above technical solution, the connecting box is a cylinder made of ordinary polyethylene plastic material, with a circular window on the upper part, which is connected to the bottom of the water storage bag. When the water storage bag and the connecting box are connected, the part where the lower part of the water storage bag overlaps with the circular window of the connecting box is prestressed to ensure that the puncture motor can puncture it. A circle of water guide holes is designed on the bottom side, and the isotope tracer is diffused to the outside of the connecting box through the holes. The lower part of the cylinder of the connecting box is hollow, and four buckles are designed around it for connecting to the water guide plate.

[0012] In the above technical solution, the inflatable bag is composed of a supporting ring and an air storage bag, and the supporting ring and the air storage bag are closely connected.

[0013] In the above technical solution, metallic sodium is provided in the ejection arm of the dosing motor, a portion of water is reserved in the air storage bag, the dosing motor pushes the metallic sodium in the ejection arm into the inflatable bag, the metallic sodium reacts with the reserved water in the inflatable bag to produce a large amount of hydrogen to rapidly expand the inflatable bag, and the ejection arm opening of the dosing motor remains sealed when not in use.

[0014] In the above technical solution, the puncture motor ejection arm is a sharp long needle, which is used to puncture the stress tensioning part at the bottom of the water storage bag.

[0015] The beneficial effects of the present invention are:

[0016] 1. The isotope tracer is kept in a sealed state throughout the entire process before being released, and will not cause "contamination" to the ground and the inner wall of the borehole, thereby minimizing the test error.

[0017] 2. Reduce the downward leakage of isotope tracers, so that the isotope tracers form a large-scale horizontal marking layer in the target soil layer. At the same time, it can also reduce the amount of isotope tracers used and reduce the test cost.

[0018] 3. Different amounts of isotope tracers can be accurately released at the same position in the borehole to reduce test errors.

[0019] 4. After the isotope tracer is released, it will send feedback to the ground, which will help the test operators understand the situation in the borehole and reduce the difficulty of operation for the test operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of the fixed-point delivery device shown in the present invention;

[0022] Figure 2 It is a schematic diagram of the structure decomposition of the fixed-point delivery device shown in the present invention;

[0023] Among them: 1. Water storage bag; 101. Water filling hole; 102. Hanging nose; 2. Connecting box; 201. Round window; 202. Water guide hole; 3. Water guide plate; 301. Arc-shaped water guide plate; 302. Water flow sensor; 303. Alarm; 304. Signal transmitter; 4. Inflatable bag; 401. Support ring; 402. Air storage bag; 5. Control system; 501. Remote control; 502. Dosing motor; 503. Puncture motor; 504. Pressure sensor; 6. Injection system; 601. Syringe; 602. Flat-top injection head. DETAILED DESCRIPTION

[0024] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0025] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0026] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein may be used to implement this device and / or practice this method.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. The drawings only show components related to the present disclosure rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0028] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0029] like Figure 1-2 As shown, the present invention provides a soil stable isotope fixed-point delivery device for reducing bottom leakage, which is composed of a water storage bag 1, a connecting box 2, a water guide plate 3, an inflatable bag 4, a control system 5 and an injection system 6.

[0030] The water storage bag 1 is a closed rubber air bag, the lower part of which is connected to the connecting box 2, and the upper part of which is slightly harder rubber with a certain strength. The upper part is provided with a water filling hole 101 and a hanging nose 102; the water filling hole 101 is a rubber tube which is tight inside and loose outside. In a natural state, the inner hole of the water filling hole 101 can be tightened under the action of its own elastic force to play a sealing role. When the water storage bag 1 is filled with an isotope tracer, the inner hole of the water filling hole 101 will be tightened under the action of water pressure to play a good water-blocking role; the hanging nose 102 can be tied with a thin wire to put the device into the drilled hole.

[0031] The connecting box 2 is a cylinder made of ordinary polyethylene plastic, with a circular window 201 on the upper part, which is connected to the bottom of the water storage bag 1. When the water storage bag 1 and the connecting box 2 are connected, the part where the lower part of the water storage bag 1 overlaps with the circular window 201 of the connecting box 2 is prestressed to ensure that the puncture motor 503 can effectively puncture it; a circle of water guide holes 202 are designed on the bottom side, and the isotope tracer is diffused to the outside of the connecting box 2; the lower part is hollow, and four buckles are designed around the cylinder for connecting to the water guide plate 3.

[0032] The upper part of the water guide plate 3 is an arc-shaped water guide plate 301, which is used for the diversion and water diversion of isotope tracers. The bottom is a circular polyethylene plastic plate with a square window connected to the dosing motor 502 and the pressure sensor 504. There are circular water flow sensors 302 designed around it. The alarm 303 and the signal transmitter 304 are connected to the water flow sensor 302. When the water flow sensor 302 senses the water flow, the alarm 303 will sound an alarm, the signal transmitter 304 will send a signal, and the alarm light on the remote control 501 will flash.

[0033] The inflatable bag 4 is composed of a supporting ring 401 and an air storage bag 402 ; wherein the supporting ring 401 and the air storage bag 402 are tightly connected and are air-tight and water-tight; a portion of water is reserved in the air storage bag 402 .

[0034] The control system 5 consists of a remote controller 501, a dosing motor 502, a puncture motor 503 and a pressure sensor 504; wherein, the dosing motor 502 is in direct contact with the air storage bag 402, the remote controller 501 sends instructions to the dosing motor 502 to complete the work, and the pressure sensor 504 is connected to the puncture motor 503 to instruct it to complete the work; metallic sodium is provided in the ejection arm of the dosing motor 502, and the ejection arm mouth of the dosing motor 502 is kept sealed when not in use; the ejection arm of the puncture motor 503 is a sharp long needle, which is used to puncture the stress tensioning part at the bottom of the water storage bag 1.

[0035] The injection system 6 consists of a syringe 601, a flat-top injection head 602 and a water filling hole 101; wherein the flat-top injection head 602 is a flat-top metal pillow that is thin at the front and thick at the back, the syringe 601 is used to quantitatively absorb the isotope tracer, the rear syringe 601 is connected to the flat-top injection head 602, and the flat-top injection head 602 can enter the water filling hole 101 to inject the isotope tracer into the water storage bag 1.

[0036] Working process: When the device is working, use the syringe 601 to absorb a certain amount of isotope tracer, insert the flat-top injection head 602 at the front end of the syringe 601 into the water filling hole 101, and inject the isotope tracer into the water storage bag 1; tie a thin line to the hanging nose 102, and lower the device to the designated position of the borehole. The remote control 501 sends a working instruction to the dosing motor 502, and the dosing motor 502 pushes the metallic sodium in the ejection arm into the air storage bag 402. The metallic sodium reacts with the reserved water in the air storage bag 402 to produce a large amount of hydrogen to rapidly expand the air bag 4. After the air bag 4 expands, it is squeezed with the borehole wall to form a closed water-blocking barrier in the borehole; when the air pressure in the air bag 4 reaches a predetermined value, it triggers the pressure sensor 504, and the pressure sensor 504 sends a working signal to the puncture motor 503 connected to it; when the puncture motor 503 works, it pushes the long needle through The circular window 201 punctures the prestressed tensioning part at the bottom of the water storage bag 1, and the isotope tracer flows into the connecting box 2 along the circular window 201, and is diverted through the arc-shaped water guide plate 301; the isotope tracer triggers the water flow sensor 302, the alarm 303 will sound an alarm, the signal transmitter 304 will send a signal, and the alarm light on the remote control 501 will flash; the isotope tracer flows through the water guide hole 202, flows out of the connecting box 2, and flows into the surrounding soil layer along the expanded inflatable bag 4, so as to achieve the effect of large-scale horizontal marking of the soil layer at this depth by the isotope tracer.

[0037] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A soil stable isotope fixed-point delivery device for reducing bottom leakage, characterized in that: The fixed-point delivery device comprises a water storage bag (1), a connecting box (2), a water guide plate (3), an inflatable bag (4), a control system (5) and an injection system (6); The injection system (6) is composed of a syringe (601), a flat-top injection head (602) and a water filling hole (101) located at the top of the water storage bag (1); the syringe (601) is used to quantitatively absorb the isotope tracer; the syringe (601) is connected to the flat-top injection head (602); the flat-top injection head (602) can enter the water filling hole (101) to inject the isotope tracer into the water storage bag (1); The control system (5) is composed of a remote controller (501), a drug delivery motor (502), a puncture motor (503) and a pressure sensor (504). The remote controller (501) is connected to the drug delivery motor (502) to instruct the drug delivery motor (502) to push the tracer into the inflatable bag (4). The drug reacts with the reserved substance in the inflatable bag (4) to generate gas to rapidly expand the inflatable bag (4). After the inflatable bag (4) expands, it squeezes against the borehole wall to form a closed water-blocking barrier in the borehole. When the inflatable bag ( 4) reaches a predetermined value, triggering the pressure sensor (504), and the pressure sensor (504) sends an instruction to the puncture motor (503) connected thereto to puncture the bottom of the water storage bag (1), and the isotope tracer flows from the water storage bag (1) into the connecting box (2), and the bottom side of the connecting box (2) is designed with a circle of water guide holes (202), and the isotope tracer flows out of the connecting box (2) through the water guide holes (202) and flows into the surrounding soil layer along the expanded inflatable bag (4); The bottom of the connection box (2) is connected to the water guide plate (3); the upper part of the water guide plate (3) is an arc-shaped water guide plate (301) for diverting and guiding the isotope tracer; a square window is opened at the bottom to connect to the dosing motor (502) and the pressure sensor (504); water flow sensors (302) are designed around the periphery; an alarm (303) and a signal transmitter (304) are connected to the water flow sensor (302); when the water flow sensor (302) senses the water flow, the alarm (303) will sound an alarm, the signal transmitter (304) will send a signal, and the alarm light on the remote controller (501) will flash; The water storage bag (1) is a sealed rubber air bag, the lower part of which is connected to the connecting box (2), and the upper part of which is slightly harder rubber. The water filling hole (101) provided at the top is a rubber tube which is tight inside and loose outside. In a natural state, the inner hole of the water filling hole (101) can be tightened under the action of its own elastic force to play a sealing role. When the water storage bag (1) is filled with the isotope tracer, the inner hole of the water filling hole (101) will be tightened under the action of water pressure, playing a good water blocking role. The inflatable bag (4) is composed of a supporting ring (401) and an air storage bag (402), and the supporting ring (401) and the air storage bag (402) are tightly connected.

2. The soil stable isotope fixed-point delivery device for reducing bottom leakage according to claim 1 is characterized in that: The top of the water storage bag (1) is also provided with a hanging nose (102), and a thin line can be tied to the hanging nose (102) to place the fixed-point delivery device into the drilled hole.

3. The soil stable isotope fixed-point delivery device for reducing bottom leakage according to claim 1 is characterized in that: The connecting box (2) is a cylinder made of ordinary polyethylene plastic, with a circular window (201) on the upper part, which is connected to the bottom of the water storage bag (1). When the water storage bag (1) and the connecting box (2) are connected, the part of the lower part of the water storage bag (1) that overlaps with the circular window (201) of the connecting box (2) is prestressed to ensure that the puncture motor (503) can puncture it. The bottom side is designed with a circle of water guide holes (202), and the isotope tracer is diffused to the outside of the connecting box (2). The lower part of the cylinder of the connecting box (2) is hollow, and four buckles are designed around it for connecting with the water guide plate (3).

4. The soil stable isotope fixed-point delivery device for reducing bottom leakage according to claim 1 is characterized in that: The ejection arm of the dosing motor (502) is provided with metallic sodium, and a portion of water is reserved in the air storage bag (402). The dosing motor (502) pushes the metallic sodium in the ejection arm into the inflatable bag (4). The metallic sodium reacts with the reserved water in the inflatable bag (4) to generate a large amount of hydrogen, causing the inflatable bag (4) to expand rapidly. When not in use, the ejection arm opening of the dosing motor (502) remains sealed.

5. The soil stable isotope fixed-point delivery device for reducing bottom leakage according to claim 1 is characterized in that: The ejection arm of the puncture motor (503) is a sharp long needle, which is used to puncture the stress tensioning part at the bottom of the water storage bag (1).

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