CN213813020U - Basement rock aquifer sampling device - Google Patents

Abstract

The utility model provides a basement rock aquifer sampling device, relate to aquifer sampling equipment field, including pipeline and sampling mechanism, sampling mechanism includes the sample container, the driving piece, the pipeline is equipped with the sample holder, sample container and driving piece mutual disposition and all connect the sample holder, sample container opening part is equipped with the shutoff piece, driving piece intercommunication pipeline, the shutoff piece is connected to the driving piece output, the driving piece is used for driving the shutoff piece under the effect of medium in the pipeline and opens or shutoff sample container, draw structure and power transport structure as transferring through the pipeline, transfer sampling mechanism and arrive after the assigned position, open through input medium drive sample container and carry out the water sample, after the sample finishes, accomplish the shutoff under the driving piece effect of restoring force, the convenience of aquifer sample has been improved.

Description

Basement rock aquifer sampling device

Technical Field

The application relates to aquifer sampling equipment field, in particular to bedrock aquifer sampling device.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

In basement rock mountainous areas, one well often uncovers a plurality of aquifers, such as Ordovician limestone, Mowurzsan limestone, Zhang Xia limestone, Zhusha limestone and Xinyuan ancient Tong Jiazhuang limestone. Due to the influence of factors such as runoff path, supply conditions and the like, the chemical components, water quality and the like of each aquifer are different. In hydrogeological research, the research on the water chemistry characteristics of each aquifer is of great significance.

The inventor finds that the outlet water after the well is formed is mixed water of all aquifers, and the water quality sample collected by the existing equipment is also mixed water of all the aquifers, so that the water chemical characteristics and the water quality characteristics of each aquifer cannot be represented. The existing well forming and water stopping technology can realize water taking of a specific aquifer, and if 4-5 aquifers are researched, a 4-5-hole water well needs to be constructed, so that the cost is high.

On the other hand, current sampling equipment adopts the sampling bottle that has the automatic start-stop bottle lid, adopts electric drive or connecting rod mode to realize opening and the shutoff to the sampling bottle, but along with the aquifer degree of depth increase, water pressure is bigger and bigger, and electrically driven drive power is difficult to satisfy the demand, and longer connecting rod structure need be arranged to the connecting rod mode, is difficult to realize transferring from the well head, consequently, is difficult to satisfy the demand to the different degree of depth aquifer sample.

Disclosure of Invention

The utility model aims at the defect that prior art exists, a basement rock aquifer sampling device and method is provided, through pipeline as transferring and draw structure and power transmission structure, transfer behind sampling mechanism reachs appointed aquifer position, make the gasbag strut through the input medium, the upper portion and the lower part of shutoff aquifer, a period of time stews, make aquifer water-logging after the water intensive cycle, open through input medium drive sampling container and carry out water sample collection, after the sample finishes, it is sealed to accomplish sampling container under driving piece restoring force effect, it is the target aquifer water sample to realize the water sample of getting, and unmixing water, the reliability of sample collection and the accuracy of research have been guaranteed. The device can realize that one water well respectively takes water samples of each aquifer.

In order to realize the purpose, the following technical scheme is adopted:

the utility model provides a basement rock aquifer sampling device, includes pipeline and sampling mechanism, and sampling mechanism is including sample container, driving piece, and the pipeline is equipped with the sample support, and sample container and driving piece mutual disposition just all connect the sample support, and the sample container opening part is equipped with the shutoff piece, and driving piece intercommunication pipeline, driving piece output are connected the shutoff piece, and the driving piece is used for driving the shutoff piece under the effect of medium in the pipeline and opens or shutoff sample container.

Furthermore, two air bags are arranged on the pipeline and are respectively communicated with the pipeline, and the sampling mechanism is positioned between the two air bags.

Furthermore, the gasbag is annular gasbag, and two gasbags overlap respectively and establish the pipeline outside and be located the different axial positions of pipeline, can follow pipeline radial expansion or shrink.

Further, the air bags are communicated with the pipelines through corresponding first air nozzles respectively.

Furthermore, a plugging barrel is arranged at the opening position of the sampling container, the outer wall of the plugging piece is attached to the inner wall of the plugging barrel and is in sliding connection with the inner wall of the plugging barrel, a through hole communicated with the interior of the sampling container is formed in the wall of the plugging barrel, and the plugging piece can slide relative to the plugging barrel to plug the through hole or open the through hole.

Further, the driving piece comprises a shell and a driving plate in sliding connection with the shell, the shell is matched with the driving plate to form a driving cavity communicated with the pipeline, one side of the driving plate is connected with the plugging piece, and the other side of the driving plate is connected with the inner wall of the shell through an elastic piece located in the driving cavity.

Further, the pipeline is communicated with the driving cavity through a second air nozzle.

Furthermore, the driving piece is connected with the sampling support through a first stop pin, and the sampling container is connected with the sampling support through a second stop pin.

Further, the output end of the driving piece is connected with the plugging piece through a connecting rod.

Further, pipeline one end opening, the other end shutoff, the open end is used for inserting external power source, and the shutoff end is connected with the balancing weight.

Compared with the prior art, the application has the advantages and positive effects that:

(1) the pipeline is used as a common power source of the air bag and the sampling mechanism, pressure difference exists between expansion plugging pressure of the air bag and triggering pressure of the sampling mechanism, and the air bag and the sampling mechanism are respectively operated by controlling the pressure of a medium in the input pipeline, so that the sampling device is started to sample after a target aquifer is isolated, the complex configuration of various power sources is avoided, and the integral sealing performance is ensured;

(2) by changing the lowering depth of the pipeline to the air bag and the sampling mechanism, the water can be taken from a fixed layer, the water in a specific aquifer can be sampled, and the water samples of different aquifers can be respectively taken by the same well, so that the multi-purpose effect of one well is realized;

(3) the sampling mechanism is located between the two air bags, the two air bags isolate the water body at the position of the sampling device from other aquifers, the water body between different aquifers is prevented from being mixed, the water in the target aquifer is fully circulated within the static set time, and the water sample is guaranteed to be the water in the target aquifer.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic view of the overall structure of a sampling device in embodiments 1 and 2 of the present application;

FIG. 2 is a schematic structural view of a sampling container in examples 1 and 2 of the present application when the sampling container is opened;

FIG. 3 is a schematic structural diagram of a sample container in examples 1 and 2 of the present application when the sample container is plugged;

FIG. 4 is a schematic structural view of a sampling vessel in examples 1 and 2 of the present application.

In the figure, the sampling device comprises a pipeline 1, a pipeline 2, an air bag 3, a first air nozzle 4, a driving piece 5, a second air nozzle 6, a sampling support 7, a driving plate 8, a first stop pin 9, a second stop pin 10, a sampling container 11, a plugging cylinder 12, a plugging piece 13 and a counterweight.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting in this application.

As introduced in the background art, the sampling bottle with an automatic opening and closing bottle cap is adopted in the existing sampling equipment in the prior art, and the sampling bottle is opened and closed in an electric driving or connecting rod mode, but as the depth of a water-bearing layer is increased, the water pressure is higher and higher, and the existing sampling equipment is difficult to meet the requirements; in order to solve the problems, the application provides a bedrock aquifer sampling device and a bedrock aquifer sampling method.

Example 1

In an exemplary embodiment of the present application, a bedrock aquifer sampling device is provided, as shown in fig. 1-4.

The device mainly comprises a pipeline 1, an air bag 2 and a sampling mechanism, wherein the air bag and the sampling mechanism are both connected with the pipeline, and the pipeline is used as a downward-placed traction element and also used as a medium conveying element; the air bag is of an elastic air bag structure and is communicated with the pipeline, the air bag can expand when a medium is injected into the air bag through the pipeline, and when the injection pressure is smaller than the self contraction force of the air bag, the air bag extrudes the medium from the air bag to return into the pipeline through contraction, so that the contraction of the air bag is achieved; the sampling mechanism is installed on the pipeline, provides stable support by the pipeline to, its intercommunication pipeline, the fluid medium through the pipe-line transportation realizes triggering, opens the sample container and takes a sample or closes the sample container and carry out the seal up of sample.

Specifically, at least two air bags which are respectively communicated with the pipelines are distributed along the axial direction of the pipelines, the air bags are communicated with the pipelines through first air nozzles 3, and the configuration number of the air bags is selected according to the number of target aquifers;

if only a single aquifer is sampled, two air bags can be configured, and the shaft is blocked after the two air bags are expanded to form a sampling space positioned in the target aquifer;

if a plurality of aquifers, for example two aquifers, are sampled, four air bags can be configured corresponding to two sampling positions, and one air bag is respectively arranged above and below each sampling position, so that two sampling spaces respectively positioned in two target aquifers can be formed when the air bags are isolated;

it should be noted that if the target aquifers are adjacent to each other, the adjacent positions thereof may share one air bag to close the hoistway, and in order to improve sampling accuracy and reduce the probability of mixing between the aquifers, even if a plurality of target aquifers are adjacent to each other, the air bags may be disposed separately and not shared, thereby ensuring the effectiveness of isolation.

The sampling mechanism is located between the two air bags, the two air bags isolate the water body at the position of the sampling device from other aquifers, the water body between different aquifers is prevented from being mixed, the water in the target aquifer is fully circulated within the static set time, and the water sample is guaranteed to be the water in the target aquifer.

The sampling mechanism comprises a sampling container 10 and a driving part 4, the sampling container is positioned between adjacent air bags, a plugging part 12 is arranged at the opening of the sampling container, the driving part is communicated with the pipeline, the output end of the driving part is connected with the plugging part, and the driving part is used for driving the plugging part to open or plug the sampling container under the action of a medium in the pipeline;

the position of the driving piece can be located at different positions and is communicated with the pipeline, the driving piece is triggered under the action of a flowing medium conveyed in the pipeline, displacement can be generated, the plugging piece is pushed to act, and the sampling container is located between the adjacent air bags, so that the sampling container can be located in an isolation space formed by the plugging shafts of the two air bags, and the purpose that the water body sampled by the sampling container is water in a target water-containing layer is achieved.

Specifically, with the balloon structure, the balloon is sleeved outside the pipeline and can expand or contract along the radial direction of the pipeline.

For the sampling mechanism, as shown in fig. 4, a plugging cylinder 11 is arranged at the opening position of the sampling container, the outer wall of a plugging piece is attached to the inner wall of the plugging cylinder and is in sliding connection with the inner wall of the plugging cylinder, a through hole communicated with the interior of the sampling container is formed in the wall of the plugging cylinder, and the plugging piece can slide relative to the plugging cylinder to plug the through hole or open the through hole;

when the plugging piece slides to open the through hole, the through hole can be communicated with the inside and the outside of the sampling container, so that external water flow can enter the sampling container; when the plugging piece slides to seal the through hole, the through hole is isolated from the outside by the plugging piece, so that the inner space of the sampling container is isolated from the outside, and the sampling container is sealed.

The driving piece comprises a shell and a driving plate 7 which is connected with the shell in a sliding mode, the shell is matched with the driving plate to form a driving cavity communicated with the pipeline, the driving cavity is communicated with the pipeline through a second air nozzle 5, one side of the driving plate is connected with the plugging piece, and the other side of the driving plate is connected with the inner wall of the shell through an elastic piece located in the driving cavity;

after the flowing medium is injected into the driving cavity, the whole driving cavity is expanded, so that the driving plate is pushed to slide by overcoming the pulling force of the elastic piece, the plugging piece is driven to act, and the sampling container is opened for sampling; after the sample is accomplished, reduce the pressure of flowing medium, the drive plate is reverse slip under the effect of the restoring force of elastic component, and reverse drive shutoff piece action, shutoff sample container accomplishes the sealing up of taking a sample.

For the elastic part, elastic elements such as a tension spring, a rubber band and the like can be selected, springs with different elastic coefficient specifications can be selected according to the required trigger pressure, or the number of the configured elastic elements can be changed.

In the embodiment, in order to facilitate the arrangement of the sampling mechanism, the driving part of the taking mechanism and the sampling container are arranged at the same position, the pipeline is provided with a sampling bracket 6 at the position between the adjacent air bags, and the sampling mechanism is arranged on the sampling bracket;

as shown in the figure, the pipeline is provided with a shunting structure between adjacent airbags, a sampling support is formed by utilizing a pipeline body, so that the installation of a driving piece and a sampling container is realized, the driving piece is fixed on the sampling support through a first stop pin 8, and the sampling container is fixed on the sampling support through a second stop pin 9;

the sampling container and the driving part are arranged oppositely, the output end of the driving part is connected with the plugging part, the plugging part can adopt a sealing piston, can slide relative to the opening of the sampling container, and can form good sealing with the opening of the sampling container before and after sliding, so that the pollution and leakage of a water sample are avoided;

in order to facilitate linkage of the driving piece and the sampling container, the rod piece is selected for use for the connecting piece between the driving plate and the plugging piece, axial thrust can be borne, axial tension can be borne, and the plugging process can be opened by conveniently pushing and pulling the plugging piece.

For the pipeline, one end of the pipeline is opened, the other end of the pipeline is plugged, the opened end is used for being connected with an external power source, and the plugging end is connected with a balancing weight 13;

the pipeline can adopt a hard pipeline or a soft pipeline, and the good transmission air pressure effect and the lifting effect can be ensured;

it should be noted that when a hard pipeline is adopted, because the hard pipeline can transmit pulling force and pushing force, the pipeline, the air bag and the sampling mechanism can be directly lowered into the well by applying external force without arranging a counterweight block;

when adopting soft pipeline, because it can only bear axial pulling force, consequently, need dispose the balancing weight at its terminal, utilize the action of gravity of balancing weight to make things convenient for transferring of gasbag, sampling mechanism and pipeline.

As for the power source, a gas power source can be adopted, gas is used as a medium, the gas pump inputs gas flow into the pipeline, the pressure of the gas flow can be controlled, and the expansion of the air bag and the triggering of the sampling container are realized;

a liquid power source can also be adopted, water, oil and the like are used as media, a water pump inputs liquid into the pipeline, the pressure of the input fluid is controlled, and the expansion of the air bag and the triggering of the sampling container are realized;

it should be pointed out that, when adopting the liquid power supply, it only adopts liquid as gasbag and the common trigger medium of sample container, when carrying out the pressure release to it, can dispose the relief valve to the pipeline and carry out the pressure release, makes things convenient for the discharge of the inside fluid of driving piece.

In the present embodiment, a gas power source is preferable in view of its controllability and safety.

Of course, it can be understood that the length of the pipeline can be freely configured according to different depths of aquifers, so that the length of the pipeline can be prolonged or shortened, and the adaptability of the pipeline to aquifers with different depths can be improved;

the change pipeline can realize the water intaking of fixed bed, the water of a specific aquifer of sample to gasbag and the transfer degree of depth of sampling mechanism to can realize that same well takes the water sample of different aquifers respectively, realize that a well is multi-purpose.

Utilize the pipeline as gasbag and the common power supply of sampling mechanism, there is the pressure differential in the inflation shutoff pressure of configuration gasbag and the trigger pressure of sampling mechanism, through the pressure of control input pipeline internal medium, realize gasbag and sampling mechanism's action respectively to open sampling device again behind the isolation target aquifer and take a sample, avoided the complicated configuration of multiple power supply, and guaranteed holistic leakproofness.

Example 2

In another exemplary embodiment of the present application, as shown in the figures, a method of sampling a bedrock aquifer is provided, utilizing a sampling device as described in example 1.

The method comprises the following steps:

determining the position and the distribution depth of a target aquifer according to drilling information, and adjusting the distance between two air bags adjacent to the sampling mechanism;

lowering the air bag and the sampling mechanism along the drill hole through the pipeline until the whole sampling mechanism is positioned at the position of the target water-containing layer;

injecting a medium into the air bags through the pipeline and stabilizing the air bags, wherein the air bags expand to be attached to the inner wall of the drill hole so as to block the position of the drill hole, so that the two air bags are positioned in a target water-containing layer region;

the volume of the medium injected into the pipeline is increased, the triggering pressure of the driving piece is greater than the pressure required by the air bag to expand and plug the drilled hole, the driving piece is triggered to drive the plugging piece to move, and the sampling container is opened to take water;

after water is taken, the volume of the medium is reduced through the pipeline, the driving piece drives the plugging piece to move, after the sampling container is plugged, the air bag retracts, and the sampling is completed through the pipeline pressure-lifting air bag and the sampling mechanism.

Furthermore, the medium is a fluid medium, the air bag is an elastic air bag, the air bag expands and fits the inner wall of the drilled hole after being filled with the medium to block the water exchange above and below the air bag, and the air bag contracts through elasticity after the medium is pumped out.

Further, after the air bag plugs the drilled hole, standing for a set time, and after water in the target aquifer is fully circulated, starting a sampling container to take water.

Specifically, taking a gas power source as an example, the above working process is further described:

1. according to the drilling data, the position of the target aquifer is determined, and the height between the upper air bag and the lower air bag is adjusted to be suitable for the target aquifer.

2. And (4) lowering the sampling device into the position of the target water-bearing stratum of the bedrock water well.

3. And (3) turning on an air compressor, adjusting the air pressure to M1, opening the upper air bag and the lower air bag to expand, filling the inner wall of the well pipe, and sealing the upper part and the bottom of the target aquifer.

4. Standing for 1-2 days, after water in the aquifer is fully circulated, increasing the pressure of the air compressor to M2 pressure, driving the blocking piece to move by the driving piece under the pressure of M2, opening the sampling container, and feeding water into the sampling container.

5. The pressure is reduced, the driving piece returns and drives the plugging piece to rise under the action of the spring, the opening of the sampling container is sealed, and the water sample is sealed and stored.

6. And continuously reducing the pressure, contracting the air bag, and lifting the sampling device to finish sampling.

The pipeline is used as a common power source of the air bag and the sampling mechanism, the pressure difference between the expansion plugging pressure of the air bag and the triggering pressure of the sampling mechanism is configured, and the air bag and the sampling mechanism respectively act by controlling the pressure of a medium in the input pipeline;

thereby open sampling device again behind isolation target aquifer and take a sample, avoided the complicated configuration of multiple power supply to holistic leakproofness has been guaranteed.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a basement rock aquifer sampling device, a serial communication port, including pipeline and sampling mechanism, sampling mechanism includes sample container, driving piece, and the pipeline is equipped with the sample support, and sample container and driving piece mutual disposition just all connect the sample support, and sample container opening part is equipped with the shutoff piece, and driving piece intercommunication pipeline, driving piece output are connected the shutoff piece, and the driving piece is used for driving the shutoff piece under the effect of medium in the pipeline and opens or shutoff sample container.

2. The bedrock aquifer sampling device of claim 1, wherein the pipe is provided with two air bags and is respectively communicated with the pipe, and the sampling mechanism is positioned between the two air bags.

3. The bedrock aquifer sampling device according to claim 2, wherein the air bag is an annular air bag, and the two air bags are respectively sleeved outside the pipeline and are positioned at different axial positions of the pipeline and can radially expand or contract along the pipeline.

4. A bedrock aquifer sampling device according to claim 2 or 3, wherein the air-pockets are each in communication with the conduit via a respective first air-nozzle.

5. The bedrock aquifer sampling device according to claim 1, wherein the opening of the sampling container is provided with a plugging cylinder, the outer wall of the plugging piece is attached to the inner wall of the plugging cylinder and is in sliding connection with the inner wall of the plugging cylinder, the wall of the plugging cylinder is provided with a through hole communicated with the inside of the sampling container, and the plugging piece can slide relative to the plugging cylinder to plug the through hole or open the through hole.

6. The bedrock aquifer sampling device according to claim 1, wherein the driving member comprises a housing and a driving plate slidably connected to the housing, the housing cooperating with the driving plate to form a driving chamber communicating with the conduit, the driving plate being connected on one side to the blocking member and on the other side to an inner wall of the housing by an elastic member located in the driving chamber.

7. The bedrock aquifer sampling device of claim 6, wherein the conduit communicates with the drive chamber through a second air tap.

8. The bedrock aquifer sampling device of claim 1, wherein the drive member is connected to the sampling mount by a first stop pin, and the sampling vessel is connected to the sampling mount by a second stop pin.

9. The bedrock aquifer sampling device of claim 1, wherein the drive member output end is connected to the block piece by a connecting rod.

10. The bedrock aquifer sampling device of claim 1, wherein one end of the pipeline is open and the other end is blocked, the open end is used for connecting an external power source, and the blocking end is connected with a counterweight.

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