CN114280325A - Equal-height flow measuring device for river section - Google Patents
Equal-height flow measuring device for river section Download PDFInfo
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- CN114280325A CN114280325A CN202111592773.XA CN202111592773A CN114280325A CN 114280325 A CN114280325 A CN 114280325A CN 202111592773 A CN202111592773 A CN 202111592773A CN 114280325 A CN114280325 A CN 114280325A
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- 238000005259 measurement Methods 0.000 description 10
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Abstract
The invention discloses an equal-height flow measuring device for river sections, which comprises two mounting frames and a flow rate monitor main body, wherein height sensors are arranged on the sides, close to each other, of the two mounting frames, a first threaded rod penetrates through the top ends of the mounting frames, a self-positioning mechanism is sleeved at the outer end of the first threaded rod, a second threaded rod and a shell are arranged between the two first threaded rods, the second threaded rod penetrates through the shell, the flow rate monitor main body is arranged at the top of the shell, and a driving mechanism is arranged inside the shell. The first threaded rod is controlled to move downwards through the height sensor and the self-positioning mechanism until the flow velocity monitor main body is located about 0.6m underwater from the water surface, the height of the cross section measuring points is consistent, accuracy of final data acquisition is effectively improved, errors are small, the second controller controls the driving mechanism to adjust the movement speed of the flow velocity monitor main body along the second threaded rod according to the water flow velocity, and flexibility is high.
Description
Technical Field
The invention relates to the technical field of section flow measurement, in particular to a height flow measurement device for river sections.
Background
In order to improve the treatment effect on water areas such as rivers and the like, the section flow measurement of the rivers needs to be carried out timely, a corresponding scheme is made in advance according to measured data, the flow measurement section refers to a section set for measuring the flow, the section is generally divided into a fixed flow measurement section and a temporary flow measurement section according to the test requirement, the height of a selected water flow velocity measuring point during flow measurement is optimal about 0.6m of water level, but due to the fact that the landform of the rivers has particularity, the height of the measuring point of the section is difficult to achieve to be consistent, the finally acquired data obtained during flow measurement is large in error and low in accuracy, meanwhile, due to the fact that the water flow velocity is different, adjustment cannot be flexibly carried out according to the actual water flow velocity during flow measurement of different rivers, and the flexibility is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high current surveying device for river sections and the like, and solves the problems that the final acquired data error is large and the accuracy is low due to the fact that the heights of section measuring points are difficult to be consistent because of the particularity of river landforms, and meanwhile, the flexibility is poor because the current speeds are different when the currents are surveyed in different rivers, the adjustment cannot be flexibly carried out according to the actual current speeds.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a height flow measuring device such as be used for river section, includes two mounting brackets and a velocity of flow monitor main part, the velocity of flow monitor main part is established between two mounting brackets, two one side that the mounting bracket is close to each other all is equipped with height sensor, the mounting bracket top is run through and is equipped with first threaded rod, first threaded rod outer pot head is equipped with from positioning mechanism, establish at the mounting bracket inboard and extend to the mounting bracket top, two from positioning mechanism be equipped with second threaded rod and casing between the first threaded rod, the second threaded rod runs through the casing, just the velocity of flow monitor main part is established at the casing top, the inside actuating mechanism that is equipped with of casing, just the second threaded rod runs through actuating mechanism.
Preferably, from positioning mechanism includes first sleeve, first sleeve cover is established in first threaded rod outer end, just first threaded rod passes through threaded connection with first sleeve, first sleeve passes through bearing swing joint on the inboard top of mounting bracket, the fixed first gear that is equipped with in first sleeve outer end, the fixed motor that is equipped with in mounting bracket top, the motor is established in the first threaded rod outside, motor output shaft runs through the mounting bracket top and extends to the mounting bracket inboardly, just bearing swing joint is passed through with the mounting bracket top in motor output shaft outer end, motor output shaft bottom end is fixed and is equipped with the second gear, the second gear is established in first gear one side, just first gear and second gear intermeshing.
Preferably, actuating mechanism includes the second sleeve, the second sleeve cover is established in second threaded rod outer end, just the second threaded rod passes through threaded connection with the second sleeve, the second sleeve runs through the casing, just sealed bearing swing joint is passed through with the inside both sides of casing in second sleeve outer end, the fixed worm wheel that is equipped with in second sleeve outer end, the worm wheel bottom is equipped with the worm, just worm wheel and worm intermeshing, the fixed third gear that is equipped with in worm outer end, the third gear is established on the worm thread front side, the fixed micro motor that is equipped with in casing inside bottom, micro motor establishes in worm one side, the fixed fourth gear that is equipped with in micro motor output shaft outer end, the fourth gear is established in third gear one side, just third gear and fourth gear intermeshing.
Preferably, the limiting plate is fixedly arranged at the top end of the first threaded rod, the limiting plate is arranged at the top of the mounting frame, the guide rod is arranged at the top end of the limiting plate in a penetrating mode, the limiting plate is connected with the guide rod in a sliding mode, the guide rod is arranged on the inner side of the first threaded rod, the bottom end of the guide rod is fixedly connected with the top end of the mounting frame, the stop block is fixedly arranged at the top end of the guide rod, and the stop block is arranged at the top end of the limiting plate.
Preferably, height sensor outer end cover is equipped with solid fixed ring, height sensor passes through solid fixed ring and mounting bracket fixed connection, the fixed protection casing that is equipped with in mounting bracket top, the protection casing is established in the first threaded rod outside, the motor is established inside the protection casing.
Preferably, the fixed box that is equipped with in the mounting bracket outside, the inside fixed first controller that is equipped with of box, height sensor and first controller input electric connection, motor and first controller output electric connection, there is the chamber door box outside through hinge swing joint.
Preferably, the bottom end of the first threaded rod is fixedly provided with a connecting block, the two ends of the second threaded rod and the inner sides of the two connecting blocks are fixedly connected with universal joints, and the bottom end of the mounting frame is fixedly provided with a fixing plate.
Preferably, the bottom end of the main body of the flow rate monitor is fixedly provided with a support column, the bottom end of the support column is movably connected with the top end of the shell through a bearing, and the front side and the rear side of the worm are respectively movably connected with the front side and the rear side inside the shell through bearings.
Preferably, the inside bottom mounting of casing is equipped with battery and second controller, micro motor establishes in second controller one side, the battery is established at the second controller opposite side, the second controller is established in the worm bottom, just micro motor and second controller output electric connection, velocity of flow monitor main part and second controller input electric connection, micro motor and battery electric connection.
Preferably, the both sides of the shell are fixedly provided with sliding blocks, the bottom end of the second threaded rod is provided with a sliding groove, and the sliding blocks are arranged at the bottom of the sealing bearing and extend into the sliding groove.
Compared with the prior art, the invention has the beneficial effects that: this a height flow measuring device for river section etc. controls first threaded rod through height sensor and self-align mechanism and moves down, stops to move down when keeping in the velocity of flow monitor main part under water about 0.6m apart from the surface of water, and the velocity of flow monitor main part removal is driven promptly to the velocity of flow monitor main part removal through second controller analysis of flow data and control drive mechanism drive casing along second threaded rod removal, and the flexibility is stronger to the velocity of flow monitor main part removal is controlled to the velocity of flow monitor main part removal at this moment to the velocity of flow monitor main part removal.
Drawings
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic view of a partially cut-away perspective structure of the present invention;
FIG. 3 is an enlarged perspective view of portion A of FIG. 1 according to the present invention;
FIG. 4 is an enlarged perspective view of the portion B of FIG. 1 according to the present invention;
FIG. 5 is a schematic view of a first perspective three-dimensional structure inside the housing according to the present invention;
fig. 6 is a schematic perspective view of a second perspective inside the housing according to the present invention.
In the figure: the device comprises a mounting frame 1, a height sensor 2, a fixing ring 3, a first threaded rod 4, a first sleeve 5, a first gear 6, a motor 7, a second gear 8, a protective cover 9, a limiting plate 10, a guide rod 11, a stop block 12, a box body 13, a first controller 14, a box door 15, a fixing plate 16, a connecting block 17, a second threaded rod 18, a universal joint 19, a shell 20, a flow rate monitor main body 21, a supporting column 22, a second sleeve 23, a worm wheel 24, a worm 25, a third gear 26, a micro motor 27, a fourth gear 28, a storage battery 29, a second controller 30, a sliding block 31 and a sliding chute 32.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the 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.
Example (b): referring to fig. 1-6, a height flow measuring device for river cross sections and the like comprises two mounting frames 1 and a flow rate monitor main body 21, the flow rate monitor main body 21 is arranged between the two mounting frames 1, two height sensors 2 are arranged on the side, close to each other, of the mounting frames 1, a first threaded rod 4 is arranged on the top of the mounting frame in a penetrating mode, a self-positioning mechanism is sleeved on the outer end of the first threaded rod 4, the self-positioning mechanism is arranged on the inner side of the mounting frame 1 and extends to the top end of the mounting frame 1, a second threaded rod 18 and a shell 20 are arranged between the first threaded rods 4, the second threaded rod 18 penetrates through the shell 20, the flow rate monitor main body 21 is arranged at the top of the shell 20, a driving mechanism is arranged inside the shell 20, and the second threaded rod 18 penetrates through the driving mechanism.
The self-positioning mechanism comprises a first sleeve 5, the first sleeve 5 is sleeved at the outer end of a first threaded rod 4, the first threaded rod 4 is in threaded connection with the first sleeve 5, the first sleeve 5 is movably connected to the top end of the inner side of the mounting frame 1 through a bearing, a first gear 6 is fixedly arranged at the outer end of the first sleeve 5, a motor 7 is fixedly arranged at the top end of the mounting frame 1, the motor 7 is arranged at the outer side of the first threaded rod 4, an output shaft of the motor 7 penetrates through the top end of the mounting frame 1 and extends to the inner side of the mounting frame 1, the outer end of the output shaft of the motor 7 is movably connected with the top end of the mounting frame 1 through a bearing, a second gear 8 is fixedly arranged at the bottom end of the output shaft of the motor 7, the second gear 8 is arranged at one side of the first gear 6, the first gear 6 and the second gear 8 are mutually meshed, and the self-positioning mechanism can control the height of the flow rate monitor main body 21 under water according to actual landform and water surface height, the height of the measuring points on the cross section is consistent, and the accuracy of data acquisition is improved.
The driving mechanism comprises a second sleeve 23, the outer end of the second threaded rod 18 is sleeved with the second sleeve 23, the second threaded rod 18 is in threaded connection with the second sleeve 23, the second sleeve 23 penetrates through the casing 20, the outer end of the second sleeve 23 is movably connected with the two sides inside the casing 20 through a sealing bearing, a worm wheel 24 is fixedly arranged at the outer end of the second sleeve 23, a worm 25 is arranged at the bottom of the worm wheel 24, the worm wheel 24 is meshed with the worm 25, a third gear 26 is fixedly arranged at the outer end of the worm 25, the third gear 26 is arranged at the front side of the upper thread of the worm 25, a micro motor 27 is fixedly arranged at the bottom inside the casing 20, the micro motor 27 is arranged at one side of the worm 25, a fourth gear 28 is fixedly arranged at the outer end of an output shaft of the micro motor 27, the fourth gear 28 is arranged at one side of the third gear 26, and the third gear 26 is meshed with the fourth gear 28, the driving mechanism can drive and control the speed of the movement of the main body 1 of the flow rate monitor through the speed of the water flow measured by the main body 21 of the flow rate monitor, and has strong flexibility.
Fixed limiting plate 10 that is equipped with in 4 tops of first threaded rod, limiting plate 10 is established at 1 top of mounting bracket, limiting plate 10 top is run through and is equipped with guide bar 11, limiting plate 10 and 11 sliding connection of guide bar, guide bar 11 is established at 4 inboards of first threaded rod, 11 bottoms of guide bar and 1 top fixed connection of mounting bracket, the fixed dog 12 that is equipped with in 11 tops of guide bar, dog 12 is established at limiting plate 10 tops, and limiting plate 10 and guide bar 11 can carry out spacing direction to it when first threaded rod 4 removes, make it can not take place to rotate, and dog 12 then can prevent that limiting plate 10 and guide bar 11 from breaking away from.
2 outer pot heads of height sensor are equipped with solid fixed ring 3, height sensor 2 is through solid fixed ring 3 and 1 fixed connection of mounting bracket, the fixed protection casing 9 that is equipped with in 1 top of mounting bracket, protection casing 9 is established in the 4 outsides of first threaded rod, motor 7 is established inside protection casing 9, and solid fixed ring 3 is convenient for carry out fixed mounting to height sensor 2, and protection casing 9 plays the guard action to motor 7.
The fixed box 13 that is equipped with in 1 outside of mounting bracket, the inside fixed first controller 14 that is equipped with of box 13, height sensor 2 and the 14 input electric connection of first controller, motor 7 and the 14 output electric connection of first controller, there is chamber door 15 box 13 outside through hinge swing joint, and box 13 and chamber door 15 are convenient for install first controller 14 and play the guard action to it, and first controller 14 then can control from positioning mechanism and open and stop.
4 bottom mounting of first threaded rod is equipped with connecting block 17, equal fixedly connected with universal joint 19 between second threaded rod 18 both ends and two connecting block 17 inboards, 1 bottom mounting of mounting bracket is equipped with fixed plate 16, and connecting block 17 plays the connection effect, and universal joint 19 can make second threaded rod 18 can adapt to different angles.
Flow rate monitor main part 21 bottom mounting is equipped with support column 22, bearing swing joint is passed through on support column 22 bottom and the casing 20 top, worm 25 front and back both sides respectively with casing 20 inside front and back both sides pass through bearing swing joint, support column 22 plays the supporting role to flow rate monitor main part 21.
The inside bottom mounting of casing 20 is equipped with battery 29 and second controller 30, micro motor 27 establishes in second controller 30 one side, battery 29 establishes in second controller 30 opposite side, second controller 30 establishes in the worm 25 bottom, just micro motor 27 and second controller 30 output electric connection, flow rate monitor main part 21 and second controller 30 input electric connection, micro motor 27 and battery 29 electric connection, battery 29 can provide the electric energy for micro motor 27, and second controller 30 can be according to the flow rate that flow rate monitor main part 21 surveyed and then control actuating mechanism and open and stop and adjust.
Casing 20 both sides are all fixed and are equipped with slider 31, spout 32 has been seted up to second threaded rod 18 bottom, inside slider 31 established in the sealed bearing bottom and extended to spout 32, slider 31 and spout 32 played limiting displacement to casing 20 for casing 20 can not rotate around second threaded rod 18 axis.
When in use: the mounting frame 1 is fixed at the side of a river channel through the fixing plate 16, the height sensor 2 is positioned above the water surface at the moment, the height from the water surface is sensed through the height sensor 2 and information is transmitted to the first controller 14, the first controller 14 analyzes data and starts the motor 7, because the second gear 8 and the first gear 6 are always in a mutual meshing state, when an output shaft of the motor 7 rotates, the first sleeve 5 can be driven to rotate by the meshing rotation of the second gear 8 and the first gear 6, because the first sleeve 5 is connected to the top end of the inner side of the mounting frame 1 through a bearing, and the first sleeve 5 and the first gear 6 are in threaded connection, when the first sleeve 5 rotates, the first threaded rod 4 can be driven to move downwards until the flow rate monitor main body 21 is positioned at about 0.6m below the water surface, at the moment, the flow rate monitor main body 21 performs flow measurement on the cross section of the river, the data measured by the main body 21 of the flow rate monitor is transmitted to the second controller 30, the second controller 30 analyzes the data and controls the micro motor 27 to be turned on, the output shaft of the micro motor 27 rotates to drive the worm 25 to rotate through the meshing rotation of the fourth gear 28 and the third gear 26, when the worm 25 rotates, the second sleeve 23 is driven to rotate through the meshed rotation with the worm wheel 24, since the second sleeve 23 is connected to the housing 20 by a sealed bearing, and is connected to the second threaded rod 18 by a screw, so that when the second sleeve 23 is rotated, the housing 20 is moved along the second threaded rod 18, namely, the flow rate monitor main body 21 is driven to move, and the speed of the water flow measured by the flow rate monitor main body 21 is analyzed by the second controller 30, and further controls the rotational speed output by the micro motor 27 to control the speed of the movement of the flow rate monitor main body 21.
In conclusion, according to the equal height flow measuring device for river sections, the first threaded rod 4 is controlled by the height sensor 2 and the self-positioning mechanism to move downwards until the flow rate monitor main body 21 is located at about 0.6m below the water surface, the downward movement is stopped, the flow rate monitor main body 21 measures the flow of the river sections at the moment, the height of the section measuring points is consistent, the accuracy of the final collected data is effectively improved, the error is small, the flow measuring data is analyzed by the second controller 30, the driving mechanism is controlled to drive the shell 20 to move along the second threaded rod 18, namely, the flow rate monitor main body 21 is driven to move, the movement speed of the flow rate monitor main body 21 is controlled by the water flow speed, the flexibility is strong, the problem that the height of the section measuring points is difficult to be consistent due to the special river topography, the error of the final collected data obtained by the flow measuring work is large, and the accuracy is low is solved, meanwhile, the water flow speed is different when the flow is measured in different rivers, so that the adjustment can not be flexibly carried out according to the actual water flow speed, and the flexibility is poor.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a height flow measuring device for river section etc. includes two mounting brackets (1) and a velocity of flow monitor main part (21), velocity of flow monitor main part (21) is established between two mounting brackets (1), its characterized in that, two one side that mounting brackets (1) are close to each other all is equipped with altitude sensor (2), mounting bracket (1) top is run through and is equipped with first threaded rod (4), the outer pot head of first threaded rod (4) is equipped with from positioning mechanism, establish at mounting bracket (1) inboard and extend to mounting bracket (1) top from positioning mechanism, be equipped with second threaded rod (18) and casing (20) between two first threaded rod (4), second threaded rod (18) run through casing (20), and velocity of flow monitor main part (21) is established at casing (20) top, the inside actuating mechanism that is equipped with of casing (20), and the second threaded rod (18) penetrates through the drive mechanism.
2. The equal-height flow measuring device for river sections and the like according to claim 1, wherein the self-positioning mechanism comprises a first sleeve (5), the first sleeve (5) is sleeved on the outer end of a first threaded rod (4), the first threaded rod (4) is in threaded connection with the first sleeve (5), the first sleeve (5) is movably connected to the top end of the inner side of the mounting frame (1) through a bearing, a first gear (6) is fixedly arranged at the outer end of the first sleeve (5), a motor (7) is fixedly arranged at the top end of the mounting frame (1), the motor (7) is arranged on the outer side of the first threaded rod (4), an output shaft of the motor (7) penetrates through the top end of the mounting frame (1) and extends to the inner side of the mounting frame (1), the outer end of the output shaft of the motor (7) is movably connected with the top end of the mounting frame (1) through a bearing, a second gear (8) is fixedly arranged at the bottom end of the output shaft of the motor (7), the second gear (8) is arranged on one side of the first gear (6), and the first gear (6) and the second gear (8) are meshed with each other.
3. The equal height flow measuring device for river sections and the like according to claim 1, wherein the driving mechanism comprises a second sleeve (23), the second sleeve (23) is sleeved on the outer end of a second threaded rod (18), the second threaded rod (18) is in threaded connection with the second sleeve (23), the second sleeve (23) penetrates through the shell (20), the outer end of the second sleeve (23) is movably connected with two sides of the interior of the shell (20) through a sealing bearing, a worm wheel (24) is fixedly arranged at the outer end of the second sleeve (23), a worm (25) is arranged at the bottom of the worm wheel (24), the worm wheel (24) is meshed with the worm (25), a third gear (26) is fixedly arranged at the outer end of the worm (25), the third gear (26) is arranged on the front side of a spiral tooth on the worm (25), and a micro motor (27) is fixedly arranged at the bottom end of the interior of the shell (20), the micro motor (27) is arranged on one side of the worm (25), a fourth gear (28) is fixedly arranged at the outer end of an output shaft of the micro motor (27), the fourth gear (28) is arranged on one side of the third gear (26), and the third gear (26) is meshed with the fourth gear (28).
4. The equal-height flow measuring device for river sections and the like according to claim 2, characterized in that a limiting plate (10) is fixedly arranged at the top end of the first threaded rod (4), the limiting plate (10) is arranged at the top of the mounting frame (1), a guide rod (11) penetrates through the top end of the limiting plate (10), the limiting plate (10) is slidably connected with the guide rod (11), the guide rod (11) is arranged inside the first threaded rod (4), the bottom end of the guide rod (11) is fixedly connected with the top end of the mounting frame (1), a stop block (12) is fixedly arranged at the top end of the guide rod (11), and the stop block (12) is arranged at the top of the limiting plate (10).
5. The equal-height flow measuring device for river sections and the like is characterized in that a fixing ring (3) is sleeved at the outer end of the height sensor (2), the height sensor (2) is fixedly connected with the mounting frame (1) through the fixing ring (3), a protective cover (9) is fixedly arranged at the top end of the mounting frame (1), the protective cover (9) is arranged on the outer side of the first threaded rod (4), and the motor (7) is arranged inside the protective cover (9).
6. The equal-height flow measuring device for river sections and the like according to claim 2, wherein a box body (13) is fixedly arranged on the outer side of the mounting frame (1), a first controller (14) is fixedly arranged inside the box body (13), the height sensor (2) is electrically connected with an input end of the first controller (14), the motor (7) is electrically connected with an output end of the first controller (14), and a box door (15) is movably connected to the outer side of the box body (13) through a hinge.
7. The equal-height flow measuring device for river sections and the like according to claim 1, wherein the bottom end of the first threaded rod (4) is fixedly provided with a connecting block (17), universal joints (19) are fixedly connected between the two ends of the second threaded rod (18) and the inner sides of the two connecting blocks (17), and the bottom end of the mounting frame (1) is fixedly provided with a fixing plate (16).
8. The equal-height flow measuring device for river sections and the like according to claim 3, wherein a supporting column (22) is fixedly arranged at the bottom end of the flow velocity monitor main body (21), the bottom end of the supporting column (22) is movably connected with the top end of the shell (20) through a bearing, and the front side and the rear side of the worm (25) are respectively movably connected with the front side and the rear side inside the shell (20) through bearings.
9. The equal-height flow measuring device for river sections is characterized in that a storage battery (29) and a second controller (30) are fixedly arranged at the bottom end inside the shell (20), the micro motor (27) is arranged on one side of the second controller (30), the storage battery (29) is arranged on the other side of the second controller (30), the second controller (30) is arranged at the bottom of the worm (25), the micro motor (27) is electrically connected with the output end of the second controller (30), the flow rate monitor main body (21) is electrically connected with the input end of the second controller (30), and the micro motor (27) is electrically connected with the storage battery (29).
10. The equal-height flow measuring device for river sections and the like according to claim 1, wherein sliding blocks (31) are fixedly arranged on two sides of the shell (20), sliding grooves (32) are formed in the bottom ends of the second threaded rods (18), and the sliding blocks (31) are arranged at the bottoms of the sealing bearings and extend into the sliding grooves (32).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111592773.XA CN114280325A (en) | 2021-12-23 | 2021-12-23 | Equal-height flow measuring device for river section |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111592773.XA CN114280325A (en) | 2021-12-23 | 2021-12-23 | Equal-height flow measuring device for river section |
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|---|---|---|---|---|
| CN115267240A (en) * | 2022-07-06 | 2022-11-01 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Hydrogeology underground water flow detection device |
| CN115267240B (en) * | 2022-07-06 | 2023-04-11 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Hydrogeology underground water flow detection device |
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