CN113804508A - Undisturbed automatic layering sampling device and method for underground water - Google Patents
Undisturbed automatic layering sampling device and method for underground water Download PDFInfo
- Publication number
- CN113804508A CN113804508A CN202110852126.1A CN202110852126A CN113804508A CN 113804508 A CN113804508 A CN 113804508A CN 202110852126 A CN202110852126 A CN 202110852126A CN 113804508 A CN113804508 A CN 113804508A
- Authority
- CN
- China
- Prior art keywords
- sample bottle
- water inlet
- control module
- inlet control
- bottle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 181
- 238000005070 sampling Methods 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims description 20
- 229920001971 elastomer Polymers 0.000 claims description 23
- -1 polytetrafluoroethylene Polymers 0.000 claims description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 229920002379 silicone rubber Polymers 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 229910001385 heavy metal Inorganic materials 0.000 claims description 7
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 3
- 239000003673 groundwater Substances 0.000 description 19
- 238000012544 monitoring process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003905 agrochemical Substances 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
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an undisturbed automatic layering sampling device for underground water, which comprises a sample bottle, an upper end water inlet control module and a protection and counterweight module, wherein the sample bottle comprises an upper opening end, the upper end water inlet control module is assembled at the upper opening end of the sample bottle, and the protection and counterweight module is sleeved on the sample bottle. The invention has the beneficial effects that: the sampling device can perform layered sampling according to needs, set water inlet time, ensure that the collected water sample can be completely replaced, and obtain an accurate water sample of a corresponding water layer; the sampling device does not need additional auxiliary equipment, each module can be flexibly prepared according to the requirement, the existing standard sample bottle can be directly utilized, the cost is relatively low, and the field work is easy to operate; the water sample that this sampling device gathered need not the secondary and shifts to storing in the bottle, is showing the disturbance influence that reduces water sample transfer and deposit and cause, is convenient for store the transportation.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of underground water environment monitoring, in particular to an undisturbed automatic layered sampling device and method for underground water.
[ background of the invention ]
According to the design structure and sampling principle of the device, the current underground water monitoring and sampling devices are roughly divided into 4 types: sample cylinder sample thief, inertial type sample thief, gas drive formula sample thief and dive electric pump formula sample thief as follows specifically:
the sampling cylinder type sampler consists of a rope and a sampling cylinder. According to sampling principle and manufacturing material of the sampling cylinder, the sampling cylinder is divided into a plurality of types: (1) installing a valve body on the sampling cylinder to control the sampling of the groundwater sample, such as a Bailer sampler and a discontinuous interval sampler of Solinst company; (2) groundwater sample sampling was performed by hydraulic pressure and sample cylinder lowering speed control, as in the Kabis sampler: (3) the cylinder body can be made of various materials such as stainless steel, PVC and the like, and can also be directly replaced by a polyethylene bag, such as a Hydrasleeve sampler and the like. During sampling, the sampling cylinder is placed to the underground water sampling horizon from the wellhead through the rope, and the sampling cylinder takes underground water samples of the target depth to realize underground water sampling.
The inertial sampler consists of a sampling pipe and an inertial pump head. The design has one-way water installations in the inertial pump head, installs in the sampling tube bottom, puts into specified sampling depth in the groundwater monitoring well, and sampling tube upper portion exposes the well head, and bare-handed or adopt machinery to push down fast and pull up the sampling tube, in the time launch get into the sampling tube under the inertial force effect fast, the check valve was closed when pulling up, makes groundwater sample liquid level rise gradually to the outflow of sampling tube last port in the sampling tube.
The gas-driven sampler consists of a gas driving pipe, a sampling pipe and a pump body, and can be divided into an air bag pump, a U-shaped pipe sampler and the like according to the structural design of the pump body. High-pressure gas enters the pump body through the gas driving pipe, drives underground water to enter the sampling pipe, releases the high-pressure gas, and the underground water enters the pump body under the action of formation pressure, so that circulation is carried out, and the underground water sample returns to the ground from the sampling pipe, so that underground water sampling is realized.
The submersible electric pump type sampler is characterized in that a submersible electric pump is driven to a sampling layer position, and a groundwater sample is conveyed to the ground through the submersible electric pump to realize sampling operation.
However, the existing sampling devices have certain defects in the groundwater sampling process, and the main defect types can be divided into the following types:
the disturbance is large, so that the obtained underground water sample index cannot effectively represent the actual situation. After the sampling of the sampling cylinder sampler, the taken underground water sample needs to be re-filled into the sample bottle, so that the contact time with air is increased, the disturbance is large, and the accuracy of subsequent index detection is seriously influenced. The external force can produce very big stirring to groundwater in inertial pump sampling process, directly influences the representativeness of gathering the water sample. The gas-driven sampler is susceptible to sampling of groundwater containing dissolved gas due to the applied gas pressure.
② layered sampling cannot be realized. The water inlet time of the sampling cylinder and the inertial sampler is not well mastered, the water sample is easy to be mixed and polluted, and layered sampling cannot be realized.
And the auxiliary equipment is more, an additional power supply is needed, and the field work is inconvenient. The gas-driven sampler has a good sampling effect and is widely used, but the operation procedure is more complicated and the supporting equipment is more. The submersible electric pump type sampler is limited by the manufacturing process of electric wires and a submersible electric pump, and the sampler requires a larger well diameter and a relatively shallow sampling depth. The two types of samplers need additional power sources and high-pressure gas sources, are inconvenient to carry and use, and directly cause the field use efficiency to be reduced.
Fourthly, the cost is high and the system is complex. The operation procedures of the gas-driven sampler and the submersible electric pump type sampler are complicated, higher learning cost is needed, the requirements on personal knowledge and operation are higher, and the difficulty in engineering popularization is higher. Moreover, the flexibility is poor, the module is not a module component, and the module can not be cooperatively used with the existing tool in engineering.
[ summary of the invention ]
The invention discloses an undisturbed automatic layered sampling device for underground water, which can accurately obtain a real underground water sample, has strong operability and low cost, and solves the technical problems of large disturbance to the underground water, incapability of accurately layered sampling, gas overflow, more auxiliary equipment and the like in sampling.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an undisturbed automatic layering sampling device for underground water comprises a sample bottle, an upper end water inlet control module and a protection and counterweight module, wherein the sample bottle comprises an upper opening end, the upper end water inlet control module is assembled at the upper opening end of the sample bottle, the protection and counterweight module is sleeved on the sample bottle,
the sample bottle is used for sampling heavy metal polluted underground water, organic polluted underground water or composite polluted underground water;
the upper water inlet control module comprises an upper sleeve, a lower sleeve and a polytetrafluoroethylene film arranged between the upper sleeve and the lower sleeve, the upper sleeve is internally filled with water-swellable expansion rubber, the outer wall and the bottom wall of the upper sleeve are uniformly provided with holes, and the inner wall and the top wall of the upper sleeve are closed; the lower sleeve is of a closed structure and is filled with a silicon rubber ring, one end of the inner side wall, facing the upper sleeve, is a tip end, and the other end of the inner side wall is a flat end;
the protection and counterweight module is a silicon rubber flexible protective sleeve.
As a preferable improvement of the present invention, the sample bottle further comprises a lower water inlet check module and a lower water inlet control module, wherein the lower water inlet control module is assembled at the lower opening end, the lower water inlet check module is assembled between the lower opening end and the lower water inlet control module, wherein,
the lower water inlet check module comprises a one-way check ball valve and a filter screen assembled on the one-way check ball valve, the one-way check ball valve comprises a shell with openings at two ends and a check ball accommodated in the shell, and the filter screen covers the opening of the shell facing the sample bottle to prevent the check ball from entering the sample bottle;
the lower end water inlet control module and the upper end water inlet control module have the same structure.
As a preferable improvement of the present invention, the check ball is made of PVC material, and the housing and the filter net are made of stainless material.
As a preferable improvement of the present invention, the upper opening end and the lower opening end of the sample bottle are both threaded openings.
As a preferable improvement of the present invention, the upper sleeve and the lower sleeve are both made of a stainless steel material.
In a preferred modification of the present invention, the swelling rubber is a rubber doped with a sodium polyacrylate super absorbent resin.
The system also comprises a well rope which is connected with the upper end water inlet control module and is used for lowering and lifting the sample bottle.
As a preferable improvement of the present invention, the sample bottle further comprises a bottle cap for connecting with the sample bottle.
The invention also provides a sampling method of the undisturbed automatic layering sampling device for underground water, which comprises the following steps:
selecting proper expansion rubber, selecting a sample bottle, unscrewing a bottle cap of the sample bottle, installing an upper end water inlet control module, tying a well rope, and sleeving a protection and counterweight module;
step two, lowering the sample bottle to the depth of the underground water layer to be detected by using a well rope, and suspending after stabilization;
step three, after a certain time, cutting a polytetrafluoroethylene film in the upper-end water inlet control module, exposing the upper opening end of the sample bottle to underground water, and automatically allowing the underground water to enter the sample bottle due to the existence of the pressure difference between the inside and the outside of the bottle;
step four, lifting the sample bottle to the ground by using a well rope;
fifthly, unscrewing the upper end water inlet control module, and replacing the upper end water inlet control module with a bottle cap to be screwed tightly;
and step six, taking down the protection and counterweight module.
The invention also provides a sampling method of the undisturbed automatic layering sampling device for underground water, which comprises the following steps:
selecting proper expansion rubber, selecting a sample bottle, unscrewing upper and lower bottle caps of the sample bottle, sequentially installing a lower water inlet check module, a lower water inlet control module and an upper water inlet control module, tying a well rope, and sleeving a protection and counterweight module;
step two, lowering the sample bottle to the depth of the underground water layer to be detected by using a well rope, and suspending after stabilization;
step three, after a certain time, the polytetrafluoroethylene films in the upper end water inlet control module and the lower end water inlet control module are simultaneously cut, the upper opening end and the lower opening end of the sample bottle are exposed in underground water, and the underground water automatically enters the sample bottle due to the existence of the pressure difference between the inside and the outside of the bottle;
lifting the sample bottle to the ground by using a well rope, wherein the one-way check valve automatically prevents a water sample in the sample bottle from flowing out due to the action of gravity, and simultaneously, underground water in other water layers is prevented from entering the sample bottle in the lifting process;
fifthly, unscrewing the upper end water inlet control module, replacing the upper end water inlet control module with a bottle cap, screwing down, then reversing the sample bottle, unscrewing the lower end water inlet control module and the lower end water inlet non-return module, and replacing the lower end water inlet control module with the bottle cap, and screwing down;
and step six, taking down the protection and counterweight module.
The invention has the following beneficial effects:
1. the sampling device can perform layered sampling according to needs, set water inlet time, ensure that the collected water sample can be completely replaced, and obtain an accurate water sample of a corresponding water layer;
2. the sampling device does not need additional auxiliary equipment, each module can be flexibly prepared according to the requirement, the existing standard sample bottle can be directly utilized, the cost is relatively low, and the field work is easy to operate;
3. the water sample that this sampling device gathered need not the secondary and shifts to storing in the bottle, is showing the disturbance influence that reduces water sample transfer and deposit and cause, is convenient for store the transportation.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of an undisturbed automatic stratified sampling apparatus for groundwater according to embodiment 1 of the invention;
FIG. 2 is a schematic diagram of a bottle cap structure of an undisturbed automatic stratified sampling apparatus for groundwater according to embodiment 1 of the invention;
FIG. 3 is a schematic structural diagram of an upper water inlet control module of the undisturbed automatic stratified sampling apparatus for groundwater according to embodiment 1 of the invention;
fig. 4 is a schematic structural diagram of an undisturbed automatic stratified sampling apparatus for groundwater according to embodiment 2 of the invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
Referring to fig. 1 and 2, the invention provides an undisturbed automatic layering sampling device for underground water, which comprises a sample bottle 1, an upper end water inlet control module 2, a protection and counterweight module 3, a well rope 4 and a bottle cap 5, wherein the sample bottle 1 comprises an upper opening end 11, the upper end water inlet control module 2 is assembled at the upper opening end 11 of the sample bottle 1, and the upper opening end 11 is a threaded opening. The protection and counterweight module 3 is sleeved on the sample bottle 1. The sample bottle 1 is used for sampling heavy metal polluted underground water. The sample bottle 1 can adopt a brown sample bottle which accords with national standards, the size and the material are consistent with the national standard requirements, and an opening is only arranged according to the requirements so that underground water can continuously enter the sample bottle 1 to update the water sample in the bottle, thereby ensuring that the water sample in the sampling device can represent underground water.
Referring to fig. 3 again, the upper water inlet control module 2 includes an upper sleeve 21, a lower sleeve 22, and a teflon film 23 disposed between the upper sleeve 21 and the lower sleeve 22, and the upper sleeve 21 and the lower sleeve 22 are made of stainless steel material and are both connected by threads. The upper sleeve 21 is internally provided with water-swelling expansion rubber 211, the outer wall and the bottom wall are uniformly provided with holes, the shapes of the holes are indefinite, and the inner wall and the top wall are closed. The lower sleeve 22 is a closed structure and is filled with a silicone rubber ring 221, one end of the inner side wall 222 facing the upper sleeve 21 is a pointed end, the other end of the inner side wall is a flat end, after the expansion rubber 211 expands, the polytetrafluoroethylene film 23 is pressed to move downwards, due to the existence of the pointed end, the polytetrafluoroethylene film 23 is partially cut, and underground water enters the sample bottle 1.
It should be further noted that the expanded rubber 211 is rubber doped with sodium polyacrylate super absorbent resin, the rubber is preferably silicon rubber, the silicon rubber is soft and has certain elasticity, the polytetrafluoroethylene film 23 can be prevented from accidentally falling off and being cut, the groundwater is prevented from entering the sample bottle 1 in advance, the silicon rubber has stable chemical properties, and adverse physicochemical effects with detection factors in groundwater under common conditions can not occur. The expanded rubber 211 adopts high-water-absorption resin containing sodium polyacrylate, the extrusion time of the expanded rubber to the polytetrafluoroethylene film 23 after the expanded rubber is expanded in water is controlled by adjusting the component proportion of the added sodium polyacrylate high-water-absorption resin in the rubber, the adjustable time interval of the expanded rubber is 12 hours to 7 days according to the requirements of national standard specifications, and the addition amount of the sodium polyacrylate high-water-absorption resin in the rubber is in inverse proportion to the expansion time.
The protection and counterweight module 3 is a silicon rubber flexible protective sleeve. The protective sleeve can avoid accidental collision and damage when the sampling device is used for lowering a water well. The counter weight is selected for use according to actual conditions, and to heavy metal pollution groundwater sampling, need add extra counter weight in order to offset the buoyancy of empty bottle.
The well rope 4 is connected with the upper end water inlet control module 2 and used for lowering and lifting the sample bottle 1. The bottle cap 5 is used for being connected with the sample bottle 1 in a covering mode. After the sample bottle 1 collects a water sample and is lifted to the ground, the upper end water inlet control module 2 is screwed off, and then the bottle cap 5 is screwed on to finish sampling.
The invention also provides a sampling method of the undisturbed automatic layering sampling device for underground water, which comprises the following steps:
selecting proper expanded rubber 211, selecting a sample bottle 1, unscrewing a bottle cap 5 of the sample bottle 1, installing an upper end water inlet control module 2, tying a well rope 4, and sleeving a protection and counterweight module 3;
step two, lowering the sample bottle 1 to the depth of the underground water layer to be detected by using the well rope 4, and suspending after stabilization;
step three, after a certain time, the polytetrafluoroethylene film 23 in the upper end water inlet control module 2 is cut, the upper opening end 11 of the sample bottle 1 is exposed in the underground water, and the underground water automatically enters the sample bottle 1 due to the existence of the pressure difference between the inside and the outside of the bottle;
step four, lifting the sample bottle 1 to the ground by using the well rope 4;
fifthly, unscrewing the upper end water inlet control module 2, and replacing a bottle cap 5 for screwing;
and step six, taking down the protection and counterweight module 3.
It is further noted that the sampling method provided in example 1 is mainly suitable for sampling heavy metal contaminated groundwater.
Example 2
Referring to fig. 4 again, the difference between the embodiment 2 and the embodiment 1 is that the sample bottle 1 further comprises a lower water inlet check module 6 and a lower water inlet control module 7, the sample bottle 1 further comprises a lower opening end 12, and the sample bottle 1 is used for sampling organic pollution or compound pollution groundwater. The lower water inlet control module 7 is assembled between the lower opening end 12, and the lower water inlet check module 6 is assembled between the lower opening end 12 and the lower water inlet control module 7.
The lower water inlet check module 6 comprises a one-way check ball valve 61 and a strainer 62 assembled on the one-way check ball valve 61, the one-way check ball valve 61 comprises a housing 611 with openings at two ends and a check ball 612 accommodated in the housing 611, and the strainer 62 covers the opening of the housing 611 facing the sample bottle 1 to prevent the check ball 612 from entering the sample bottle 1. Specifically, check ball 612 is made of a PVC material, and shell 611 and filter screen 62 are made of a stainless steel material, and are made of a stainless steel material, which can serve as a counterweight and help the sampling device to overcome the buoyancy sinking of the empty bottle during sampling.
The lower end water inlet control module 7 and the upper end water inlet control module 2 have the same structure and are not redundant at the next time.
The invention also provides a sampling method of the undisturbed automatic layering sampling device for underground water, which comprises the following steps:
selecting proper expansion rubber 211, selecting a sample bottle 1, unscrewing upper and lower bottle caps 5 of the sample bottle 1, sequentially installing a lower end water inlet non-return module 6, a lower end water inlet control module 7 and an upper end water inlet control module 2, tying a well rope 4, and sleeving a protection and counterweight module 3;
step two, lowering the sample bottle 1 to the depth of the underground water layer to be detected by using the well rope 4, and suspending after stabilization;
step three, after a certain time, the polytetrafluoroethylene films 23 in the upper end water inlet control module 2 and the lower end water inlet control module 7 are simultaneously cut, the upper opening end 11 and the lower opening end 12 of the sample bottle 1 are exposed in the underground water, and the underground water automatically enters the sample bottle 1 due to the pressure difference between the inside and the outside of the bottle;
step four, the sample bottle 1 is lifted to the ground by using the well rope 4, and due to the action of gravity, the one-way check valve 61 automatically prevents the water sample in the sample bottle 1 from flowing out, and meanwhile, underground water in other water layers is prevented from entering the sample bottle 1 in the lifting process;
fifthly, unscrewing the upper end water inlet control module 2, replacing the upper end water inlet control module with a bottle cap 5, screwing down, then reversing the sample bottle 1, unscrewing the lower end water inlet control module 7 and the lower end water inlet non-return module 6, and replacing the lower end water inlet control module with the bottle cap 5, and screwing down;
and step six, taking down the protection and counterweight module 3.
It is further noted that the sampling method provided in example 2 is mainly suitable for sampling organic polluted or combined polluted groundwater.
Example 3
In a certain agrochemical factory, pollution indexes comprise heavy metals, VOCs, SVOCs, pesticides and TPH, a monitoring well is established by adopting a PVC pipe with the diameter of 75mm, the well depth is 12m, the underground water burial depth is about 5m, the well pipe screening range is 5-10 m underground, after the well is washed, the sampling device is lowered to the depth of 6m for sampling, after the polytetrafluoroethylene film is cut for 12 hours, the underground water enters a sampling bottle and is continuously updated, and after 24 hours, the sampling device is taken out.
The sample bottle is provided with an upper opening and a lower opening, the capacity is 250mL, the bottle height is 138mm, the diameter of the bottle body is 60.5, the inner diameter of the bottle opening is 17.5mm, and the outer diameter of the bottle opening is 27 mm. The overall length of the sampling device is 320mm, and the outer diameter is 60.5 mm.
Example 4
In a chromium salt factory, pollution indexes mainly comprise heavy metals such as chromium, lead and arsenic, a loose rock pore water monitoring well is built by adopting a stainless steel pipe with the diameter of 110mm, the well depth is 20m, the groundwater depth is 11.2m, and the well pipe screening depth is 11-18 m. After washing the well, the two sampling devices are simultaneously lowered to depths of 12m and 17m for sampling, the polytetrafluoroethylene film is cut for 1d, the underground water enters the sampling bottle and is continuously updated after the film is cut, and the two sampling devices are taken out after 2 d.
The standard sample bottle has the capacity of 500mL, the bottle height of 169mm, the bottle body diameter of 74.5mm, the inner diameter of a bottle opening of 17mm and the outer diameter of the bottle opening of 27 mm. In the present invention, the standard sample bottle is a boston bottle, which is specifically shown in table 1 below.
TABLE 1
The invention has the following beneficial effects:
1. the sampling device can perform layered sampling according to needs, set water inlet time, ensure that the collected water sample can be completely replaced, and obtain an accurate water sample of a corresponding water layer;
2. the sampling device does not need additional auxiliary equipment, each module can be flexibly prepared according to the requirement, the existing standard sample bottle can be directly utilized, the cost is relatively low, and the field work is easy to operate;
3. the water sample that this sampling device gathered need not the secondary and shifts to storing in the bottle, is showing the disturbance influence that reduces water sample transfer and deposit and cause, is convenient for store the transportation.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The undisturbed automatic layering sampling device for underground water is characterized by comprising a sample bottle, an upper end water inlet control module and a protection and counterweight module, wherein the sample bottle comprises an upper opening end, the upper end water inlet control module is assembled at the upper opening end of the sample bottle, the protection and counterweight module is sleeved on the sample bottle,
the sample bottle is used for sampling heavy metal polluted underground water, organic polluted underground water or composite polluted underground water;
the upper water inlet control module comprises an upper sleeve, a lower sleeve and a polytetrafluoroethylene film arranged between the upper sleeve and the lower sleeve, the upper sleeve is internally filled with water-swellable expansion rubber, the outer wall and the bottom wall of the upper sleeve are uniformly provided with holes, and the inner wall and the top wall of the upper sleeve are closed; the lower sleeve is of a closed structure and is filled with a silicon rubber ring, one end of the inner side wall, facing the upper sleeve, is a tip end, and the other end of the inner side wall is a flat end;
the protection and counterweight module is a silicon rubber flexible protective sleeve.
2. The undisturbed automatic stratified sampling device for underground water of claim 1, wherein: the sample bottle also comprises a lower opening end, the lower water inlet control module is assembled at the lower opening end, the lower water inlet check module is assembled between the lower opening end and the lower water inlet control module, wherein,
the lower water inlet check module comprises a one-way check ball valve and a filter screen assembled on the one-way check ball valve, the one-way check ball valve comprises a shell with openings at two ends and a check ball accommodated in the shell, and the filter screen covers the opening of the shell facing the sample bottle to prevent the check ball from entering the sample bottle;
the lower end water inlet control module and the upper end water inlet control module have the same structure.
3. The undisturbed automatic stratified sampling device for underground water according to claim 1 or 2, wherein: the check ball is made of PVC materials, and the shell and the filter screen are made of stainless steel materials.
4. The undisturbed automatic stratified sampling device for underground water of claim 2, wherein: the upper opening end and the lower opening end of the sample bottle are both threaded openings.
5. The undisturbed automatic stratified sampling device for underground water of claim 2, wherein: the upper sleeve and the lower sleeve are both made of stainless steel materials.
6. The undisturbed automatic stratified sampling device for underground water of claim 2, wherein: the expanded rubber is rubber doped with sodium polyacrylate super absorbent resin.
7. The undisturbed automatic stratified sampling device for underground water according to claim 1 or 2, wherein: the well rope is connected with the upper end water inlet control module and used for lowering and lifting the sample bottle.
8. The undisturbed automatic stratified sampling device for underground water of claim 7, wherein: the bottle cover is used for being connected with the sample bottle.
9. A sampling method of an undisturbed automatic stratified sampling apparatus for underground water according to claim 1, wherein the method comprises the steps of:
selecting proper expansion rubber, selecting a sample bottle, unscrewing a bottle cap of the sample bottle, installing an upper end water inlet control module, tying a well rope, and sleeving a protection and counterweight module;
step two, lowering the sample bottle to the depth of the underground water layer to be detected by using a well rope, and suspending after stabilization;
step three, after a certain time, cutting a polytetrafluoroethylene film in the upper-end water inlet control module, exposing the upper opening end of the sample bottle to underground water, and automatically allowing the underground water to enter the sample bottle due to the existence of the pressure difference between the inside and the outside of the bottle;
step four, lifting the sample bottle to the ground by using a well rope;
fifthly, unscrewing the upper end water inlet control module, and replacing the upper end water inlet control module with a bottle cap to be screwed tightly;
and step six, taking down the protection and counterweight module.
10. A sampling method of an undisturbed automatic stratified sampling apparatus for underground water according to claim 2, wherein the method comprises the steps of:
selecting proper expansion rubber, selecting a sample bottle, unscrewing upper and lower bottle caps of the sample bottle, sequentially installing a lower water inlet check module, a lower water inlet control module and an upper water inlet control module, tying a well rope, and sleeving a protection and counterweight module;
step two, lowering the sample bottle to the depth of the underground water layer to be detected by using a well rope, and suspending after stabilization;
step three, after a certain time, the polytetrafluoroethylene films in the upper end water inlet control module and the lower end water inlet control module are simultaneously cut, the upper opening end and the lower opening end of the sample bottle are exposed in underground water, and the underground water automatically enters the sample bottle due to the existence of the pressure difference between the inside and the outside of the bottle;
lifting the sample bottle to the ground by using a well rope, wherein the one-way check valve automatically prevents a water sample in the sample bottle from flowing out due to the action of gravity, and simultaneously, underground water in other water layers is prevented from entering the sample bottle in the lifting process;
fifthly, unscrewing the upper end water inlet control module, replacing the upper end water inlet control module with a bottle cap, screwing down, then reversing the sample bottle, unscrewing the lower end water inlet control module and the lower end water inlet non-return module, and replacing the lower end water inlet control module with the bottle cap, and screwing down;
and step six, taking down the protection and counterweight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110852126.1A CN113804508A (en) | 2021-07-27 | 2021-07-27 | Undisturbed automatic layering sampling device and method for underground water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110852126.1A CN113804508A (en) | 2021-07-27 | 2021-07-27 | Undisturbed automatic layering sampling device and method for underground water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113804508A true CN113804508A (en) | 2021-12-17 |
Family
ID=78893197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110852126.1A Pending CN113804508A (en) | 2021-07-27 | 2021-07-27 | Undisturbed automatic layering sampling device and method for underground water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113804508A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245531A (en) * | 2013-04-10 | 2013-08-14 | 席北斗 | Micro-disturbance passive ground water sampler |
| CN206132430U (en) * | 2016-08-18 | 2017-04-26 | 中铁隧道集团二处有限公司 | Different degree of depth samplers of simple and easy liquid material |
| US20190365303A1 (en) * | 2018-05-31 | 2019-12-05 | Magnolia Medical Technologies, Inc. | Fluid control devices and methods of using the same |
| CN209814234U (en) * | 2019-04-12 | 2019-12-20 | 东莞市永晟救生设备有限公司 | Portable throwing type automatic inflation rescue ring |
| CN110700348A (en) * | 2019-11-14 | 2020-01-17 | 四川省地质工程勘察院集团有限公司 | Method and device for layered water stopping outside casing pipe in underground water layered water pumping test |
| CN112145816A (en) * | 2020-09-22 | 2020-12-29 | 张尚斌 | Heating anti-icing device that breaks of PVC pipeline |
| CN212321200U (en) * | 2020-04-22 | 2021-01-08 | 苏州祥禄检测技术服务有限公司 | Portable air sampling device |
| CN112229682A (en) * | 2020-11-11 | 2021-01-15 | 于涵 | Sampling device for monitoring water environment |
| CN112352612A (en) * | 2020-11-09 | 2021-02-12 | 陈金刚 | Soil unfreezing embedded rod for yield increase in seasonal planting |
| CN112964506A (en) * | 2021-03-08 | 2021-06-15 | 中国人民解放军63653部队 | Sleeve type gas-driven underground water sampling device |
-
2021
- 2021-07-27 CN CN202110852126.1A patent/CN113804508A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245531A (en) * | 2013-04-10 | 2013-08-14 | 席北斗 | Micro-disturbance passive ground water sampler |
| CN206132430U (en) * | 2016-08-18 | 2017-04-26 | 中铁隧道集团二处有限公司 | Different degree of depth samplers of simple and easy liquid material |
| US20190365303A1 (en) * | 2018-05-31 | 2019-12-05 | Magnolia Medical Technologies, Inc. | Fluid control devices and methods of using the same |
| CN209814234U (en) * | 2019-04-12 | 2019-12-20 | 东莞市永晟救生设备有限公司 | Portable throwing type automatic inflation rescue ring |
| CN110700348A (en) * | 2019-11-14 | 2020-01-17 | 四川省地质工程勘察院集团有限公司 | Method and device for layered water stopping outside casing pipe in underground water layered water pumping test |
| CN212321200U (en) * | 2020-04-22 | 2021-01-08 | 苏州祥禄检测技术服务有限公司 | Portable air sampling device |
| CN112145816A (en) * | 2020-09-22 | 2020-12-29 | 张尚斌 | Heating anti-icing device that breaks of PVC pipeline |
| CN112352612A (en) * | 2020-11-09 | 2021-02-12 | 陈金刚 | Soil unfreezing embedded rod for yield increase in seasonal planting |
| CN112229682A (en) * | 2020-11-11 | 2021-01-15 | 于涵 | Sampling device for monitoring water environment |
| CN112964506A (en) * | 2021-03-08 | 2021-06-15 | 中国人民解放军63653部队 | Sleeve type gas-driven underground water sampling device |
Non-Patent Citations (1)
| Title |
|---|
| 王继刚: "《油井选择性化学堵水技术》", 31 August 2013, 黑龙江科学技术出版社, pages: 36 - 37 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107860371B (en) | Free telescopic ocean profile observation device and method based on large buoy | |
| CN105547750B (en) | Water conservancy fine sediment of reservoir water sample acquisition device and its method for sampling | |
| CN105651546B (en) | Water conservancy reservoir investigation and sampling device and its sampling method | |
| AU2020102440A4 (en) | Fixed-depth water sampling device based on pressure sensor and water sampling method thereof | |
| CN212134174U (en) | Buoy type water quality detection device | |
| CN213095562U (en) | Lifting net cage | |
| CN215865974U (en) | Novel automatic layering of groundwater undisturbed sampling device | |
| CN117212137B (en) | Groundwater collection device for hydraulic engineering ring geological engineering | |
| CN113804508A (en) | Undisturbed automatic layering sampling device and method for underground water | |
| CN212134230U (en) | Water layering collection system | |
| CN210269314U (en) | Water greenhouse gas collection system | |
| CN210923175U (en) | Underground water layered sampling device for straight-through well pipe | |
| CN113530526B (en) | Underground long-period fluid flux monitoring device and method | |
| CN113588344B (en) | Device and method for monitoring fluid flux and collecting fluid sample | |
| CN114993749A (en) | No-load-rejection-prevention type cableless gravity sampler and seabed sediment sampling method | |
| JP2023024285A5 (en) | ||
| KR102496038B1 (en) | Drone mounted grab sampler | |
| CN114459824A (en) | Regional water quality sampler for environmental quality detection and detection method | |
| CN114323741A (en) | Hoisting-free automatic sediment sampling device and automatic sampling method thereof | |
| CN113640069A (en) | Water area section greenhouse gas collection system | |
| CN216050885U (en) | Water environment monitoring sampling device convenient to carry | |
| CN207832516U (en) | Underwater mud back-silts object sampler | |
| CN207964368U (en) | Automatic hydrophore and water sampling system | |
| CN211697072U (en) | Portable automatic water quality sampler | |
| WO2019144445A1 (en) | Experimental simulation apparatus for submarine oil spill behavior of ocean thermocline, and control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |