CN210604009U - Micro-disturbance constant-depth underground water collecting and water level measuring device - Google Patents
Micro-disturbance constant-depth underground water collecting and water level measuring device Download PDFInfo
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- CN210604009U CN210604009U CN201920861986.XU CN201920861986U CN210604009U CN 210604009 U CN210604009 U CN 210604009U CN 201920861986 U CN201920861986 U CN 201920861986U CN 210604009 U CN210604009 U CN 210604009U
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Abstract
The utility model provides a perturbation-driven depth-fixed groundwater acquisition and water level measurement device, which comprises a floating ball height adjusting pipe, a floating ball, a cylinder body, a water resistance contact point measuring head, a wire reel and a check ball, wherein a floating ball baffle is arranged in the floating ball height adjusting pipe, the floating ball is arranged on the floating ball baffle, the top end of the cylinder body is provided with a hole which is in threaded connection with the lower end of the floating ball height adjusting pipe, the inner wall of the cylinder body close to the bottom end of the cylinder body protrudes outwards to form a cavity, the cavity is connected with a water taking pipe, the check ball is arranged in the cavity, a spacer is arranged on the inner wall of the cylinder body at the entrance of the cavity and is used for preventing the check ball from sliding out from the cavity, a fixed pulley is arranged in the cylinder body, the lower end of the spacer is connected with one end of a pulley fine line, the water resistance contact point measuring head is arranged at the lower end of the barrel and is connected with a steel ruler cable wound on the wire spool.
Description
Technical Field
The utility model relates to a groundwater investigation, research technical field, concretely relates to perturbation moves depthkeeping groundwater collection and water level measurement device.
Background
Groundwater is an important resource on which human beings live and multiply, and the degree of dependence on groundwater is continuously increasing today when the human living level and economic society are rapidly developing. In the past decades, our socioeconomic development has not been achieved, and the environmental issues of groundwater have been paid more and more attention. The investigation and research of developing underground water are the precondition of reasonably developing and utilizing underground water resources and preventing and treating underground water pollution. In the investigation and research of underground water in areas and polluted sites, representative underground water samples can be collected, and the method is the key for accurately judging the pollution degree of the underground water and scientifically evaluating risks. And the underground water level can be accurately measured, an underground water flow field can be drawn, and pollution sources and migration rules can be analyzed.
At the present stage, the underground water sample collecting tools in the polluted site investigation of China mainly comprise: submersible pumps, air bag pumps, two-valve air-driven pumps, Bailer tubes, etc. The double-valve air-driven pump water collecting device is of a double-layer steel pipe structure. The bottom water inlet of the outer layer steel pipe and the top water outlet of the inner layer steel pipe are provided with check valves, and the top of the outer layer steel pipe is provided with an air inlet (outlet) at the same time. When the earth's surface does not pour air into the steel pipe, under hydrostatic pressure drive, water gets into the steel pipe through the bottom water inlet, and when water was full of the inlayer steel pipe, the check valve was closed, and the earth's surface was passed through the air compressor machine and is poured into the air from outer steel pipe top, and the water in the steel pipe is extruded and is gone up to the water pipe through inlayer steel pipe top, can not flow back under the effect of check valve after the water got into the water pipe. And (5) after the gas is released, feeding water into the steel pipe again, and repeating the steps. In the whole sampling process, a water sample is driven by air to cause large disturbance to a water body, and is in contact with a very long pipeline (usually dozens of meters to 150 meters), so that the water sample is easily polluted; the sampling flow rate is very slow, long time is needed for filling a sampling bottle, certain pollutants are easily lost, a part of underground water needs to be extracted to flush a pipeline before sampling every time, and 1 hour or even longer time is possibly needed for collecting a water sample of one point position. The sampling equipment is heavy, and multiple persons are needed to cooperate when the sampling point positions are transferred.
The Beller tube is characterized in that the lower part of the tube body is provided with a check ball with density higher than that of water, when the tube body enters below the water surface, the water flushes the check ball into the tube body, when the tube body is filled with water, the tube body is lifted upwards, the bottom of the tube body is blocked by the check ball, and a water sample is lifted to the ground along with the tube body. The water sample is poured into the sampling bottle through the outlet at the top of the tube body. When the common Beller tube is used for sampling, the check ball can enable a water sample to form a small vortex at the bottom of the tube body when entering the tube body, so that the water sample is disturbed; the in-process of pouring the water sample into the water appearance bottle from the body at the water sample makes water sample and air fully contact more, hardly acquires the groundwater sample accurately.
In practice, the measurement of the groundwater level is usually performed by a steel water gauge which measures the water level alone. The steel rule water level gauge consists of a measuring head, a steel rule cable and a receiving system. The measuring head is provided with a water resistance contact point, when the measuring head is contacted with the water surface, the receiving system is connected through a steel ruler cable, a buzzer is sounded, and at the moment, the scale of the steel ruler is recorded, namely the water level.
The above samplers do not have the functions of sampling at fixed depth and accurately measuring the underground water level. The double-valve air-driven pump and the Bailer tube can greatly increase the contact of the sample with air or cause larger disturbance to underground water, and cause the change of the content (particularly volatile organic pollutants) or the property of certain indexes of the sample. Other various sampling devices have the characteristics of being selected and used according to different sampling requirements, but the problems of large sample disturbance, difficulty in cleaning, need of auxiliary equipment such as electric power and the like exist, and the sampling cost can be increased or the operability is reduced. Therefore, the underground water sampling device which can accurately acquire underground water samples of different depths and accurately measure the underground water level is developed, and is practical and low in cost is necessary.
Disclosure of Invention
In view of this, the utility model provides a simple structure, easy and simple to handle perturbation move depthkeeping groundwater collection and water level measurement device.
The utility model provides a little disturbance depthkeeping groundwater collection and water level measurement device, including floater altitude mixture control pipe, floater, barrel, water resistance contact point gauge head, wire reel and check ball, floater altitude mixture control pipe is open cylinder structure from top to bottom, place the floater baffle in the floater altitude mixture control pipe, the first circular aperture that the diameter is less than the diameter of floater is seted up at the center of floater baffle, the floater is placed on the floater baffle, the barrel is the cylindric structure of top trompil, the top trompil department of barrel and the lower extreme threaded connection of floater altitude mixture control pipe, the inner wall of barrel near the barrel bottom is outwards outstanding to form the cavity, the cavity is connected the intake pipe, the check ball is placed in the cavity, set up the spacer on the inner wall of the barrel at the entrance of cavity, the spacer is used for stopping the check ball from the roll-off in the cavity, the diameter is less than the aperture of check ball diameter at the middle part of spacer, place the fixed pulley in the barrel, the one end of pulley fine rule is connected to the lower extreme of spacer, the other end of pulley fine rule is walked around the fixed pulley and is connected with the floater, the circular aperture of second is seted up to the bottom of barrel, the diameter of the circular aperture of second is less than the diameter of check ball, water resistance contact point gauge head sets up the lower extreme at the barrel, water resistance contact point gauge head passes through gauge head cable and the steel ruler cable junction of winding on the wire reel.
Furthermore, a plurality of first clamping grooves which are arranged at intervals are formed in the inner wall of the left side of the floating ball height adjusting pipe, a plurality of second clamping grooves which are arranged at intervals are formed in the inner wall of the right side of the floating ball height adjusting pipe, the first clamping grooves and the second clamping grooves which are at the same height are arranged symmetrically, and the floating ball baffle is inserted into the first clamping grooves and the second clamping grooves which are symmetrical to each other.
Furthermore, the upper end of the spacer is fixedly connected to the inner wall of the barrel, a groove is formed in the inner wall of the barrel right below the spacer, the lower end of the spacer is placed in the groove, and the position of the spacer is limited by the groove.
Furthermore, the water taking pipe is provided with scales, the upper end of the water taking pipe is provided with a water stopping clamp, the outer wall of the barrel is provided with a plurality of pipe clamps, and the pipe clamps are used for fixing the position of the water taking pipe.
Furthermore, the upper end of the floating ball height adjusting pipe is in threaded connection with a pipe cover, and the pipe cover is used for sealing the upper end of the floating ball height adjusting pipe.
Further, the length of the floating ball height adjusting pipe is 20-100 cm.
Further, the diameter of the floating ball is smaller than the diameter of the cross section of the floating ball height adjusting pipe.
Further, the vertical interval of the first clamping groove is 3-20 cm.
The utility model provides a beneficial effect that technical scheme brought is:
1. the utility model discloses set up the check ball temporarily in the outside of barrel, the water sample directly enters into the intake pipe from the bottom of barrel, after the water sample all entered into the intake pipe, adopt the buoyancy of floater to pull open the spacer, the check ball landing to the bottom of barrel plays the stagnant water effect, has reduced the disturbance to groundwater, can not form the little vortex because of the blocking of check ball in the process that makes groundwater enter into the intake pipe with traditional bailer's pipe, has improved the representativeness that groundwater sample gathered greatly;
2. the utility model sets the place for placing the check ball into the cavity, so that the cavity has the double functions of water taking and storing the check ball, the introduction of the water taking pipe directly injects the water sample into the sampling bottle, the influence of pouring the water sample into the water sample bottle is avoided, and the scale on the water taking pipe can also roughly judge the water sample allowance in the sampler;
3. the utility model can measure the underground water level while collecting the underground water sample, and realizes the integration of sampling and underground water level measurement;
4. the utility model can accurately collect the groundwater of different depths according to the groundwater level and the scale of the steel ruler cable by adjusting the length of the floating ball height adjusting pipe and the position of the floating ball in the pipe;
5. the utility model discloses easy operation, light easily carry under the prerequisite of guaranteeing multiple service function are favorable to open-air sampling to use.
Drawings
Fig. 1 is a schematic structural view of the device for collecting groundwater and measuring water level in a micro-disturbance constant depth.
Fig. 2 is a schematic structural view of a float height adjusting tube of the micro-disturbance depth-fixed groundwater collection and water level measuring device of the present invention.
In the figure: the device comprises a floating ball height adjusting pipe-1, a floating ball-2, a cylinder-3, a water resistance contact point measuring head-4, a wire spool-5, a check ball-6, a ground receiving system-7, a pipe cover-11, a first clamping groove-12, a second clamping groove-13, a floating ball baffle-14, a round small hole-141, a threaded interface-15, a fixed pulley-31, a cavity-32, a spacer-33, a pulley thin line-331, a water taking pipe-34, a water stop clamp-341, a pipe clamp-35, a second round small hole-36, a measuring head cable-41, a steel ruler cable-51, a rotating handle-52, an indicator light-71, a power switch-72 and a buzzer-73.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, an embodiment of the present invention provides a micro-disturbance depth-fixed groundwater collecting and water level measuring device, which includes a floating ball height adjusting tube 1, a floating ball 2, a barrel 3, a water resistance contact point measuring head 4, a wire spool 5, a check ball 6 and a ground receiving system 7.
The floating ball height adjusting pipe 1 is of a cylindrical structure with an upper opening and a lower opening, the upper end of the floating ball height adjusting pipe 1 is in threaded connection with a pipe cover 11, the pipe cover 11 is used for sealing the upper end of the floating ball height adjusting pipe 1, a plurality of first clamping grooves 12 which are arranged at intervals are formed in the inner wall of the left side of the floating ball height adjusting pipe 1, a plurality of second clamping grooves 13 which are arranged at intervals are formed in the inner wall of the right side of the floating ball height adjusting pipe 1, the first clamping grooves 12 and the second clamping grooves 13 which are at the same height are symmetrically arranged, a floating ball baffle 14 is inserted into the first clamping grooves 12 and the second clamping grooves 13 which are symmetrical to each other, a first round small hole 141 with the diameter smaller than that of a floating ball 2 is formed in the center of the floating ball baffle 14, and the floating ball 2; the length of floater altitude mixture control pipe 1 is 20 ~ 100cm, and the vertical interval of first draw-in groove 12 is 3 ~ 20cm, and the upper end and the lower extreme of floater altitude mixture control pipe 1 all set up hickey 15, and the floater altitude mixture control pipe 1 of being convenient for superposes and uses, and the density of floater 2 is far less than water, should have great buoyancy, and the shape of floater 2 is spherical or the great cylindrical of volume, is made by the foam class material.
The cylinder body 3 is a cylindrical structure with a hole at the top end, the hole at the top end of the cylinder body 3 is in threaded connection with the lower end of the floating ball height adjusting pipe 1, namely, the inside of the cylinder body 3 is communicated with the inside of the floating ball height adjusting pipe 1, the fixed pulley 31 is arranged in the cylinder body 3, the inner wall of the cylinder body 3 close to the bottom end of the cylinder body 3 protrudes outwards to form a cavity 32, the cavity 32 is hemispherical or cylindrical, a spacer 33 is arranged on the inner wall of the cylinder body 3 at the inlet of the cavity 32, a small hole with the diameter smaller than that of the check ball 6 is arranged in the middle of the spacer 33, the upper end of the spacer 33 is fixedly connected on the inner wall of the cylinder body 3, a groove is arranged on the inner wall of the cylinder body 3 right below the spacer 33, the lower end of the spacer 33 is arranged in the groove, the position of the spacer 33 is limited by the, the check ball 6 is placed in the cavity 32, the check ball 6 can freely enter and exit from the cavity 32, the diameter of the check ball 6 is smaller than that of the cavity 32, the water taking pipe 34 adopts a rubber pipe with a polytetrafluoroethylene lining, the check ball 6 cannot slide from the cavity 32 under the blocking force of the spacer 33, the cavity 32 is connected with the graduated water taking pipe 34, the upper end of the water taking pipe 34 is provided with a water stopping clamp 341, the outer wall of the barrel 3 is provided with a plurality of pipe clamps 35, the pipe clamps 35 are used for fixing the position of the water taking pipe 34, the bottom end of the barrel 3 is provided with a second round small hole 36, and the diameter of the second round small hole 36 is smaller than that of the check ball 6; the material for making the cylinder 3 is selected according to different purposes, when an organic sample is collected, the stainless steel 304 can be selected for making, and when a heavy metal sample is collected, the Polyethylene (PE) or polyvinyl chloride (PVC) material can be adopted for making.
The water resistance contact point measuring head 4 is arranged at the lower end of the barrel 3, the lower end of the water resistance contact point measuring head 4 is flush with the second round small hole 36 and is connected with one end of a steel ruler cable 51 wound on the wire spool 5 through a measuring head cable 41, scales on the steel ruler cable 51 are marked from the height of the barrel 3, the other end of the steel ruler cable 51 is connected with the ground receiving system 7, the ground receiving system 7 is installed on the wire spool 5 and comprises an indicator lamp 71, a power switch 72 and a buzzer 73, the wire spool 5 is provided with a rotating handle 52, the indicator lamp 71, the power switch 72 and the buzzer 73 are respectively arranged right below the rotating handle 52, when the power switch 72 is turned on, the indicator lamp 71 is turned on, and when the water resistance contact point measuring head 4 is contacted with water, the buzzer 73 is turned off; when the power switch 72 is turned off, the indicator lamp 71 is turned off.
Following with the utility model discloses 3 length of barrel are 50 cm's perturbation depthkeeping groundwater collection and water level measurement device, gather below the groundwater monitoring well groundwater level 0.5 ~ 1.0m groundwater to measure this monitoring well groundwater level as an example, its specific use is as follows:
1) device assembly
After a sampling point is reached, two floating ball height adjusting pipes 1 with the length of 30cm and the distance of 10cm between the first clamping grooves 12 are selected according to the sampling depth and vertically spliced at the top end opening of the cylinder body 3 through threaded connection, and at the moment, the total length of the floating ball height adjusting pipes 1 is 60 cm; inserting a floating ball baffle 14 into a first clamping groove 12 at the position of the floating ball height adjusting pipe 1, which is 40cm away from the top end of the cylinder 3; one end of the pulley fine line 331, which is not connected with the floating ball 2, passes through the round small hole 141 in the middle of the floating ball baffle 14, the floating ball 2 is placed on the floating ball baffle 14, and the upper end of the floating ball height adjusting pipe 1 is covered by the pipe cover 11; a pulley thread 331 is wound around the fixed pulley 31 and then connected to the lower end of the spacer 33; pushing the check ball 6 into the cavity 32 from the bottom end of the barrel 3, and adjusting the length of the pulley thread 331 to enable the pulley thread 331 to be in a straightened state when the spacer 33 is closed; the water intake pipe 34 is tightly attached to the outer wall of the barrel 3 and clamped on the pipe clamp 35.
2) Water level measurement
Vertically placing the sampling device into a monitoring wellhead, turning on a power switch 72, lighting an indicator lamp 72, loosening a wire reel 5, and continuously lowering a steel ruler cable 51 to enable the device to move underground; when the water resistance contact point measuring head 4 at the bottom of the device contacts the underground water surface, the ground receiving system 7 is connected, the buzzer 73 sounds, and the downward placing is suspended; and turning off the power switch 72, turning off the indicator lamp 71, enabling the buzzer 73 to no longer sound, reading the scale reading of the steel ruler cable 51, and recording the underground water level.
3) Depth setting sampling
After the water level is recorded, the device is slowly lowered for 1m again according to the scale of the steel ruler cable 51. At this time, the floating ball 2 floats upwards in a space of 10cm enough to pull the spacer 33 out of the groove through the pulley thread 331, and the check ball 6 slides down to the bottom end of the cylinder 3 to block the second round small hole 36 of the cylinder 3; the water sample collected in the device is a water sample at a position of 0.5-1.0 m.
4) Taking-out device
The steel rule cable 51 is pulled up, the device is lifted up, and simultaneously the steel rule cable 51 is wound on the wire spool 5 by rotating around the rotating handle 52. At this time, the check ball 6 prevents the outflow of the water sample, the water sampling pipe 34 is filled with the water sample after the water is taken out of the water surface, and the water sampling pipe 34 is clamped by the water stop clamp 341.
5) Sample transfer
The water taking pipe 34 is taken down from the pipe clamp 35 on the outer wall of the barrel 3, a sampling bottle is prepared, the water stopping clamp 341 is opened to receive a water sample, the water taking pipe 34 is clamped by the water stopping clamp 341 after the sampling bottle is filled, the cover of the sample bottle is immediately closed for sealing, and the sample bottle is placed into the heat preservation box for storage after being numbered. The outer wall of the water taking pipe 34 tightly attached to the barrel 3 is clamped on the pipe clamp 35, the storage amount of water in the device can be judged through the scales on the water taking pipe 34, and if a plurality of bottles of samples need to be collected for detection of different indexes, the water stop clamp 341 can be opened to continue to receive a water sample.
After the water sample collection of the monitoring well is finished, collecting the underground water sample of the next monitoring well.
1. The utility model discloses set up check ball 6 in the outside of barrel 3 temporarily, the water sample directly enters into intake pipe 34 from the bottom of barrel 3, after the water sample all entered into intake pipe 34, adopt the buoyancy of floater 2 to pull away spacer 33, check ball 6 landing to the bottom of barrel 3 plays the stagnant water effect, has reduced the disturbance to groundwater, can not form the little vortex because of the stopping of check ball 6 with traditional bailer's pipe in the process that makes groundwater enter into intake pipe 34, has improved the representativeness that groundwater sample gathered greatly;
2. the utility model sets the place where the check ball 6 is placed as the cavity 32, so that the cavity 32 has the double functions of water taking and storage of the check ball 6, the introduction of the water taking pipe 34 to directly inject the water sample into the sampling bottle also avoids the influence on the water sample caused by pouring the water sample into the water sample bottle, and the scale on the water taking pipe 34 can also roughly judge the water sample allowance in the sampler;
3. the utility model can measure the underground water level while collecting the underground water sample, and realizes the integration of sampling and underground water level measurement;
4. the utility model can accurately collect the groundwater of different depths according to the groundwater level and the scale of the steel ruler cable 51 by adjusting the length of the floating ball height adjusting pipe 1 and the position of the floating ball 2 in the pipe;
5. the utility model discloses easy operation, light easily carry under the prerequisite of guaranteeing multiple service function are favorable to open-air sampling to use.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A micro-disturbance depth-fixed underground water collecting and water level measuring device is characterized by comprising a floating ball height adjusting pipe, a floating ball, a barrel, a water resistance contact point measuring head, a wire winding disc and a check ball, wherein the floating ball height adjusting pipe is of a cylindrical structure with an upper opening and a lower opening, a floating ball baffle is placed in the floating ball height adjusting pipe, a first round small hole with the diameter smaller than that of the floating ball is formed in the center of the floating ball baffle, the floating ball is placed on the floating ball baffle, the barrel is of a cylindrical structure with a hole at the top end, the hole at the top end of the barrel is in threaded connection with the lower end of the floating ball height adjusting pipe, the inner wall of the barrel close to the bottom end of the barrel protrudes outwards to form a cavity, the cavity is connected with a water taking pipe, the check ball is placed in the cavity, a spacer is arranged on the inner wall of the barrel at the, the diameter is less than the aperture of check ball diameter at the middle part of spacer, place the fixed pulley in the barrel, the one end of pulley fine rule is connected to the lower extreme of spacer, the other end of pulley fine rule is walked around the fixed pulley and is connected with the floater, the circular aperture of second is seted up to the bottom of barrel, the diameter of the circular aperture of second is less than the diameter of check ball, water resistance contact point gauge head sets up the lower extreme at the barrel, water resistance contact point gauge head passes through gauge head cable and the steel ruler cable junction of winding on the wire reel.
2. A micro-disturbance constant-depth groundwater collecting and water level measuring device according to claim 1, wherein a plurality of first clamping grooves are formed at intervals on the left inner wall of the floating ball height adjusting pipe, a plurality of second clamping grooves are formed at intervals on the right inner wall of the floating ball height adjusting pipe, the first clamping grooves and the second clamping grooves at the same height are arranged symmetrically with each other, and the floating ball baffle is inserted into the first clamping grooves and the second clamping grooves which are symmetrical with each other.
3. A micro-disturbance constant-depth underground water collecting and water level measuring device according to claim 1, wherein the upper end of the spacer is fixedly connected to the inner wall of the cylinder, a groove is formed in the inner wall of the cylinder right below the spacer, the lower end of the spacer is placed in the groove, and the position of the spacer is limited by the groove.
4. A micro-disturbance constant-depth groundwater collecting and water level measuring device according to claim 1, wherein the water intake pipe is provided with scales, a water stop clip is arranged at the upper end of the water intake pipe, and a plurality of pipe clamps are arranged on the outer wall of the barrel body and used for fixing the position of the water intake pipe.
5. A micro-disturbance constant-depth groundwater collecting and water level measuring device according to claim 1, wherein the upper end of the floating ball height adjusting pipe is in threaded connection with a pipe cover, and the pipe cover is used for closing the upper end of the floating ball height adjusting pipe.
6. A micro-disturbance constant-depth underground water collecting and water level measuring device according to claim 1, wherein the length of the floating ball height adjusting pipe is 20-100 cm.
7. A micro-disturbance constant-depth groundwater collecting and water level measuring device as claimed in claim 1, wherein the diameter of the floating ball is smaller than the cross-sectional diameter of the floating ball height adjusting pipe.
8. A micro-disturbance constant-depth underground water collecting and water level measuring device according to claim 2, wherein the vertical interval of the first clamping grooves is 3-20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920861986.XU CN210604009U (en) | 2019-06-10 | 2019-06-10 | Micro-disturbance constant-depth underground water collecting and water level measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920861986.XU CN210604009U (en) | 2019-06-10 | 2019-06-10 | Micro-disturbance constant-depth underground water collecting and water level measuring device |
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| CN210604009U true CN210604009U (en) | 2020-05-22 |
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| CN201920861986.XU Expired - Fee Related CN210604009U (en) | 2019-06-10 | 2019-06-10 | Micro-disturbance constant-depth underground water collecting and water level measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261171A (en) * | 2019-06-10 | 2019-09-20 | 中国地质大学（武汉） | A kind of acquisition of micro-disturbance depthkeeping underground water and level measurement device |
-
2019
- 2019-06-10 CN CN201920861986.XU patent/CN210604009U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261171A (en) * | 2019-06-10 | 2019-09-20 | 中国地质大学（武汉） | A kind of acquisition of micro-disturbance depthkeeping underground water and level measurement device |
| CN110261171B (en) * | 2019-06-10 | 2024-02-27 | 中国地质大学（武汉） | Micro-disturbance fixed-depth underground water collection and water level measurement device |
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