CN212202040U

CN212202040U - Compound high-resolution underground sampling device

Info

Publication number: CN212202040U
Application number: CN202020218505.6U
Authority: CN
Inventors: 檀涛; 饶文波
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-12-22
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses a composite high-resolution underground sampling device, which comprises a depth measuring unit, a sampling unit and a sensor unit; the depth measuring unit comprises a lifting rope; the sampling unit comprises a sampler; the top of the sampler shell is closed, and the top of the sampler shell is fixedly connected with one end of the lifting rope; the bottom of the shell of the sampler is open, and the bottom of the sampler is provided with a sphere, the diameter of which is larger than that of the bottom of the sampler; a water outlet is formed in one side of the lower end of the sampler, and a water drain valve is arranged at the water outlet; the sensor unit includes a humidity sensor and a display. The utility model provides a pair of compound high resolution is sampling device in pit can once only gather the groundwater sample of a plurality of depths, and simultaneous measurement water level height, and this device convenient operation has improved work efficiency, easily promotes and popularizes.

Description

Compound high-resolution underground sampling device

Technical Field

The utility model relates to a quality of water sampling device technical field, especially a compound high resolution is sampling device in pit.

Background

The isotope and water chemical analysis of the groundwater is an important method for analyzing the circulation rule and condition of the groundwater, and is widely applied to the fields of groundwater water quality monitoring, groundwater circulation and the like. Isotope and water chemistry analysis can be performed by extracting groundwater at different depths.

At present, a Belleville tube sampler is mostly adopted for collecting underground water samples, and the sampler obviously has the following defects: (1) only can get a pipe water sample every time, if need many times repetitive operation when getting different degree of depth ground water sample, the process is loaded down with trivial details, and wastes time and energy. (2) The sample is relatively troublesome and is easily spilled and lost water sample when the sample is loaded after the sample is finished. (3) The length of the Beller tube sampler is usually too long, the sampling depth range is large, and high-resolution underground water analysis cannot be realized. (4) The water level can not be measured simultaneously, a water level measuring instrument is required to be additionally used, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, and provide a compound high resolution sampling device in pit, this compound high resolution sampling device in pit can once only gather the underground water sample of the different degree of depth, can also the simultaneous measurement water level height, improves work efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a composite high-resolution underground sampling device comprises a depth measuring unit, a sampling unit and a sensor unit; the depth measuring unit comprises a lifting rope; the sampling unit comprises a sampler; the top of the shell of the sampler is closed, and the top of the shell of the sampler is fixedly connected with one end of the lifting rope; the bottom of the shell of the sampler is open, and the bottom of the sampler is provided with a sphere, wherein the diameter of the sphere is larger than that of the bottom of the sampler; a water outlet is formed in one side of the lower end of the sampler, and a water drain valve is arranged at the water outlet; the sensor unit includes a humidity sensor and a display; the humidity sensor is arranged at the top of the sampler, and the display is fixedly connected with the handheld tail end of the lifting rope.

Preferably, the ball is made of a material having a density greater than a density of water.

Preferably, a plurality of samplers are fixedly connected to the sampling unit in the longitudinal direction.

Preferably, each of the samplers is connected by a bolt.

Preferably, the lifting rope is marked with scales.

Preferably, the top of the sampling tube is provided with a plastic grid frame, and the center of the plastic grid frame is connected with a lifting rope.

The utility model discloses following beneficial effect has:

the utility model discloses a compound high resolution is sampling device in pit, the following technical problem of main solution:

(1) the method realizes the simultaneous sampling of multiple layers of underground water and can meet the research of underground water chemistry and isotope with higher resolution;

(2) the simplicity of sample loading is realized, and the loss and the spilling of water samples during water loading are avoided;

(3) the measurement of groundwater level is realized while taking a sample.

The utility model discloses a compound high resolution sampling device in pit sets up three functional unit, can increase and decrease convenient and practical according to the experimental study demand to the sampling tube.

Drawings

Fig. 1 is a schematic structural diagram of a composite high-resolution downhole sampling device according to the present invention.

Among them are: 11. a lifting rope; 21. a first sampling tube; 211. a sphere; 212. a water discharge outlet; 2121. a water drain valve; 213. plastic grids; 22. a second sampling tube; 23. a third sampling tube; 24. bolts and nuts; 31. a humidity sensor; 32. a display.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, "first", "second" and the like do not indicate the degree of importance of the component parts, and thus, are not to be construed as limiting the present invention. The specific dimensions used in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.

As shown in fig. 1, a composite high resolution downhole sampling device comprises a depth measuring unit, a sampling unit and a sensor unit; the depth measuring unit comprises a lifting rope 11, the sampling unit comprises a first sampling tube 21, the top of the shell of the first sampling tube 21 is closed, the top of the shell of the first sampling tube 21 is fixedly connected with the lifting rope 11, the bottom of the shell of the first sampling tube 21 is open, the bottom of the first sampling tube 21 is provided with a ball 211, the diameter of the ball 211 is larger than that of the bottom of the first sampling tube 21, one side of the lower end of the first sampling tube 21 is provided with a water discharge port 212, and the water discharge port 212 is provided with a water discharge valve 2121 for controlling the access of a water sample; the sensor unit includes a humidity sensor 31 and a display 32; the humidity sensor 31 is arranged at the top of the sampler and used for sensing the height of the water surface; the display 32 is fixedly attached to the hand-held end of the lifting rope 11.

When a water sample is collected by using the composite high-resolution downhole sampling device in fig. 1, in order to prevent the water sample from leaking out of the bottom of the first sampling pipe 21, the bottom of the sampler is closed by using a ball 211 at the bottom, and the density of the ball 211 is greater than the density of water.

For the underground water sample of the different degree of depth of taking out of can high resolution, be equipped with a plurality of vertical fixed connection's sampler in the sample cell of a compound high resolution sampling device in FIG. 1, can connect through fixed connection modes such as screw thread, buckle between the sampler, the fixed connection mode of bolt nut is adopted to this embodiment.

In order to simultaneously perform the water level measuring operation, scales are marked on the lifting rope 11 in fig. 1, and the water level measurement is performed by the cooperation of the scaled lifting rope 11 and the humidity sensor 32.

In order to balance when the composite high-resolution underground sampling device collects water samples, a plastic grid frame 213 is arranged at the top of the sampling tube, and a lifting rope is connected to the center of the plastic grid frame 312.

The specific sampling step is as follows:

firstly, the number of sampling tubes is determined according to the research requirement, then the sampling tubes are connected, and two sections of sampling tubes are taken as an example:

fixing the first sampling tube 21 and the second sampling tube 22 by the bolt and the nut 24, the first sampling tube 21 is on the top, and the lifting rope 11 is fixedly connected with the center of the plastic grid frame 213 of the first sampling tube 21; the humidity sensor 31 is then fixed on top of the first sampling tube 21. Before the device is put into the underground for sampling, whether the drain valve 2121 is in a closed state or not needs to be checked; after the device is inspected and connected, the lifting rope 11 is grabbed to place the device in a well, after the sampling tube at the lowest position enters water, the device can sink to the water surface at an accelerated speed due to the action of gravity, at the moment, the ball 211 in the sampling tube is flushed and floated by the water and enters the first sampling tube 21, when the device is completely immersed in the water and is stable, the ball 211 sinks to the bottom of the tube and seals the bottom of the sampling tube due to the fact that the density of the ball 211 is greater than that of the water, and at the moment, a water sample with a corresponding depth is filled in each sampling tube; the device is then taken out ashore by the lifting rope 11, at which time the drain valve 2121 of each sampling tube is opened and the corresponding sample bottle is filled. In the whole process, when the humidity sensor 31 on the uppermost section of the sampling tube is in contact with water, the reading on the display 32 is obviously changed, and at the moment, the depth of the humidity sensor is read through the scales on the lifting rope 11, so that the water surface height can be obtained. If another sample needs to be taken, the operation is repeated.

The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention to perform various equivalent transformations, which all belong to the protection scope of the present invention.

Claims

1. A composite high resolution downhole sampling device is characterized in that: comprises a depth measuring unit, a sampling unit and a sensor unit;

the depth measuring unit comprises a lifting rope;

the sampling unit comprises a sampler;

the top of the sampler shell is closed, and the top of the sampler shell is fixedly connected with one end of the lifting rope;

the bottom of the shell of the sampler is open, and the bottom of the sampler is provided with a sphere, wherein the diameter of the sphere is larger than that of the bottom of the sampler;

a water outlet is formed in one side of the lower end of the sampler, and a water drain valve is arranged at the water outlet;

the sensor unit includes a humidity sensor and a display; the humidity sensor is arranged at the top of the sampler, and the display is fixedly connected with the handheld tail end of the lifting rope.

2. The composite high resolution downhole sampling device of claim 1, wherein: the ball is made of a material having a density greater than a density of water.

3. The composite high resolution downhole sampling device of claim 1, wherein: a plurality of samplers are fixedly connected in the sampling unit in the longitudinal direction.

4. A composite high resolution downhole sampling device according to claim 3, wherein: each sampler is connected through a bolt.

5. The composite high resolution downhole sampling device of claim 1, wherein: the lifting rope is marked with scales.

6. The composite high resolution downhole sampling device of claim 1, wherein: the top of the sampler is provided with a plastic grid frame, and the center of the plastic grid frame is connected with a lifting rope.