CN210239590U - A device for measuring the flow direction of groundwater velocity in a vertical borehole - Google Patents

Abstract

The utility model relates to a hydrogeological survey technical field discloses a survey device of ground water velocity of flow direction in vertical drilling, including stretching into the detector body in the vertical drilling, still include the cable system with this body coupling of detector, the detector body includes the glass storehouse, be equipped with the horizontally baffle that separates the glass storehouse for last cavity and lower cavity in the glass storehouse, be equipped with camera lens camera down on the baffle, there is the electromagnetic current meter glass storehouse below through vertical scroll connection, be equipped with three-dimensional electron compass sensor on the electromagnetic current meter, the cable system is including suspending in midair the wire rope of detector body and providing the power supply communication cable of power supply and communication for the detector body. The utility model discloses survey device of groundwater velocity of flow direction in the vertical drilling, the velocity of flow and the flow direction of groundwater in the vertical drilling of can direct survey, simple structure, it is convenient to measure, the good reliability.

Description

Device for measuring flow velocity and flow direction of underground water in vertical drilling

Technical Field

The utility model relates to a hydrogeology surveys the field, concretely relates to survey device of groundwater velocity of flow direction in vertical drilling.

Background

In the field of hydrogeological surveying, a three-point method is generally adopted for measuring the flow direction of underground water, namely three drill holes are arranged at the vertexes of an approximately equilateral triangle, an equal water level line is compiled according to the water level elevation of the drill holes, and the direction which is perpendicular to the equal water level line and is reduced towards the water level is taken as the flow direction of the underground water. And (4) calculating the hydraulic gradient between two adjacent equal water level lines when the underground water flow of the equal water level line graph is upward, so as to obtain the underground water flow speed. The measuring method measures the flow direction and the flow speed of the diving, has good effect on stabilizing the groundwater in laminar motion, and is difficult to obtain hydrological parameters of the groundwater in a turbulent state at any position and any time.

In addition, the isotope tracing method can also be used for measuring the flow direction and flow velocity of underground water, but on one hand, when the medium is not uniform or branches appear, the calculation result is often inaccurate, and meanwhile, radioactive elements can cause pollution to the underground water environment.

Meanwhile, in the field of hydrological monitoring, water flow velocity devices for direct measurement mainly comprise a propeller type velocimeter, a Doppler velocimeter, an ultrasonic velocimeter and the like. However, these flow rate measuring instruments are generally used for measuring the flow rate of water flows in rivers, oceans and the like. Due to the narrow drilling space, the slow flow rate of underground water and the unstable flow state, the traditional flow meter is difficult to be applied to the flow rate measurement of underground water. Therefore, at present, no device for intuitively, accurately, practically and effectively measuring the flow direction and the flow speed of underground water in the drill hole exists.

Disclosure of Invention

The utility model aims at providing a measuring device of groundwater velocity of flow direction in vertical drilling to the not enough of above-mentioned technique, can directly survey the velocity of flow and the flow direction of groundwater in the vertical drilling, simple structure, it is convenient to measure, the good reliability.

In order to achieve the purpose, the device for measuring the flow velocity and the flow direction of the underground water in the vertical drilling hole, which is designed by the utility model, comprises a detector body which extends into the vertical drilling hole and a cable system which is connected with the detector body, the detector body comprises a glass bin, a horizontal clapboard which divides the glass bin into an upper cavity and a lower cavity is arranged in the glass bin, a camera with a downward lens is arranged on the clapboard, is used for collecting water body images, an electromagnetic current meter is connected below the glass bin through a vertical shaft and is directly contacted with underground water, used for measuring the flow velocity of underground water and indicating the flow direction of the underground water, a three-dimensional electronic compass sensor is arranged on the electromagnetic current meter and can read the azimuth angle of the electromagnetic current meter, and calibrating the electromagnetic current meter, wherein the cable system comprises a steel wire rope for suspending the detector body and a power supply communication cable for supplying power and communication for the detector body.

Preferably, a cable spool paying-off device is arranged on the ground and connected with a cable system, a working foot rest is arranged above the vertical drilling hole, a paying-off guide wheel is arranged on the working foot rest, the cable system bypasses the paying-off guide wheel, and the working foot rest is used for detecting the centering of the work in the vertical drilling hole and recording the depth of the detector body in the vertical drilling hole.

Preferably, a current meter protection frame for protecting the electromagnetic current meter is arranged below the glass bin.

Preferably, the bottom of the current meter protection frame is provided with a rubber cone with a downward head, and the rubber cone is used for guiding the probe body to drill downwards through a counterweight, so that the problem of difficulty in drilling downwards due to local blockage of the vertical drilling hole is avoided.

Preferably, a plurality of LED lamps are arranged on the lower surface of the partition plate, and the LED lamps are wound around the camera to form a ring to provide a light source for image acquisition.

Preferably, a rotation speed sensor is arranged on the working foot stand and used for measuring the linear speed of the paying-off guide wheel and calculating the length of the cable system which is lowered.

Preferably, the power supply communication cable is fixedly connected to the steel wire rope through a wire clamp, and the wire clamp is averagely arranged with the position of the electromagnetic current meter as a starting point.

Preferably, the three-dimensional electronic compass comprises a detector body and a power supply communication cable, and further comprises a receiving terminal connected with the detector body through the power supply communication cable, wherein the receiving terminal comprises a main processor module, and a rotating speed signal processing module, a video signal processing module and an azimuth angle signal processing module which are connected with the main processor module, the rotating speed signal processing module is electrically connected with the electromagnetic current meter through the power supply communication cable, the video signal processing module is electrically connected with the camera through the power supply communication cable, and the azimuth angle signal processing module is electrically connected with the three-dimensional electronic compass sensor through the power supply communication cable.

Preferably, the electromagnetic current meter is internally provided with an excitation coil, and a pair of electrodes communicated with the water body is inlaid on the surface of the electromagnetic current meter in the direction perpendicular to the magnetic lines of force.

Preferably, the camera is wide-angle lens camera, and the visual angle covers electromagnetic current meter plane department and lower part water, the lower cavity bottom in glass storehouse is equipped with the angle scale.

Compared with the prior art, the utility model, have following advantage:

1. the electromagnetic current meter is used for measuring the current velocity, the accuracy and the reliability are high, current velocity curves at different depths can be drawn, the three-dimensional electronic compass sensor can be used for measuring the azimuth angle of the electromagnetic current meter, and the problem that the current velocity and the current direction of underground water in a vertical drilling hole are difficult to measure is effectively solved;

2. by utilizing the drilling and shooting function, the flowing image of underground water can be visually observed, the reliability of the measuring result is high, and the problem that the measuring result is distorted due to the fact that instruments are damaged by other measuring methods in an underwater severe environment is solved.

Drawings

FIG. 1 is a schematic structural diagram of a device for measuring the flow velocity and direction of groundwater in vertical drilling according to the present invention;

FIG. 2 is a schematic structural diagram of the probe body of FIG. 1;

FIG. 3 is an exploded view of the probe body of FIG. 1;

FIG. 4 is a bottom view of the baffle of FIG. 1;

fig. 5 is a schematic structural diagram of the receiving terminal in fig. 1.

The components in the figures are numbered as follows:

the device comprises a vertical drilling hole 1, a detector body 2, a cable system 3, a glass bin 4, an upper cavity 5, a lower cavity 6, a partition plate 7, a camera 8, an electromagnetic current meter 9, a three-dimensional electronic compass sensor 10, a steel wire rope 11, a power supply communication cable 12, a cable reel paying-off device 13, a working foot stand 14, a paying-off guide wheel 15, a current meter protection frame 16, a rubber cone 17, an LED lamp 18, a wire clamp 19, a receiving terminal 20, a rotating speed signal processing module 21, a video signal processing module 22, an azimuth angle signal processing module 23, a main processor module 24 and a display module 25.

Detailed Description

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

As shown in figure 1, the device for measuring the flow velocity and the flow direction of underground water in vertical drilling of the utility model comprises a detector body 2 extending into a vertical drilling hole 1, and a cable system 3 connected with the detector body 2, as shown by combining figures 2 and 3, the detector body 2 comprises a glass bin 4, a horizontal clapboard 7 which divides the glass bin 4 into an upper cavity 5 and a lower cavity 6 is arranged in the glass bin 4, a camera 8 with a downward lens is arranged on the clapboard 7, the camera 8 is a wide-angle lens camera, the bottom of the lower cavity 6 of the glass bin 4 is provided with angle scales, as shown by combining figure 4, in the embodiment, eight LED lamps 18 are arranged on the lower surface of the clapboard 7, the LED lamps 18 form a ring around the camera 8, an electromagnetic flow velocity meter 9 is connected with the lower part of the glass bin 4 through a vertical shaft, an excitation coil is arranged inside the electromagnetic flow velocity meter 9, a pair of electrodes which are communicated with a water body is inlaid on the surface of the electromagnetic flow velocity meter 9, the glass storehouse 4 below still is equipped with the current meter fender bracket 16 of protection electromagnetism current meter 9, the bottom of current meter fender bracket 16 is equipped with head down rubber awl 17, be equipped with three-dimensional electron compass sensor 10 on the electromagnetism current meter 9, cable system 3 is including hanging in midair the wire rope 11 of detector body 2 and for the power supply communication cable 12 of detector body 2 power supply and communication, power supply communication cable 12 passes through fastener 19 fixed connection on wire rope 11, fastener 19 uses the position of electromagnetism current meter 9 as the starting point and arranges on average.

In addition, a cable spool paying-off device 13 is arranged on the ground, the cable spool paying-off device 13 is connected with a cable system 3, a working foot rest 14 is arranged above the vertical drilling hole 1, a paying-off guide wheel 15 is arranged on the working foot rest 14, the cable system 3 bypasses the paying-off guide wheel 15, a rotating speed sensor is also arranged on the working foot rest 14,

meanwhile, as shown in fig. 5, the device further comprises a receiving terminal 20 connected with the detector body 2 through the power supply communication cable 12, the receiving terminal 20 comprises a main processor module 24, and a rotating speed signal processing module 21 and a video signal processing module 22 connected with the main processor module 24, azimuth signal processing module 23 and display module 25, rotational speed signal processing module 21 is even with electromagnetism velocity of flow appearance 9 electricity through power supply communication cable 12, video signal processing module 22 is even with camera 8 electricity through power supply communication cable 12, azimuth signal processing module 23 is even with three-dimensional electron compass sensor 10 electricity through power supply communication cable 12, during the use, rotational speed signal processing module 21 receives the rotational speed signal of electromagnetism velocity of flow appearance 9, video signal processing module 22 receives the video signal of camera 8, azimuth signal processing module 23 receives the azimuth signal of three-dimensional electron compass sensor 10.

When the present embodiment is used, two modes of automatic measurement and manual measurement may be selected on the receiving terminal 20: in the automatic measurement mode, slowly lowering the device from the orifice of the vertical drilling hole 1 to the bottom of the hole at a constant speed, and automatically measuring the device according to 1 time/second; and in the manual measurement mode, slowly lowering the device from the orifice of the vertical drilling hole 1 to the bottom of the hole at a constant speed, manually pressing a measurement button, and randomly measuring once by the device. When the detector body 2 is lowered, the camera 8 and the video signal processing module 22 electrically connected with the camera are combined with the display module 25 to watch the water body image in real time. Finally, after the data of the depth, the flow rate and the azimuth angle of the device are interpreted and processed by the rotating speed signal processing module 21, the azimuth angle signal processing module 23 and the main processor module 24, a depth value curve, a flow rate curve and a flow direction azimuth angle are displayed on the display module 25, the hole depth of a water outlet point can be obtained by reading the maximum flow rate position on the curve, and the flow direction of underground water in the vertical drilling hole 1 can be determined through the azimuth angle.

The utility model discloses survey device of groundwater velocity of flow direction in vertical drilling, when utilizing rivers to flow on electromagnetic current meter 9 surfaces, produce trace voltage signal on the electrode, voltage signal conveys on the counter, circuit processing through enlarging and analog-to-digital conversion etc. shows the velocity of flow, measurement accuracy is high, measuring range can reach 0.01 ms ~ 10 ms, and combine the instrument degree of depth to show and draw different degree of depth velocity of flow curves, electromagnetic current meter 9 goes up external three-dimensional electron compass sensor 10 measurable quantity electromagnetic current meter 9 azimuth, effectively solve groundwater velocity and the difficult problem of flow direction measurement in vertical drilling 1; and the water body characteristics of underground water can be visually observed by utilizing the drilling and shooting functions, the principle is simple, the measurement is convenient, the reliability of the measurement result is high, and the problem that the measurement result is distorted due to the fact that instruments are damaged by other measurement methods under the severe underwater environment is solved.

Claims (10)

1. A measuring device for the flow direction of groundwater velocity in a vertical borehole, comprising a detector body (2) extending into the vertical borehole (1), characterized in that: also comprising being connected with the detector body (2) the cable system (3), the detector body (2) includes a glass chamber (4), and the glass chamber (4) is provided with a space for dividing the glass chamber (4) into an upper cavity (5) and a A horizontal partition (7) of the lower cavity (6), a camera (8) with a lens facing downward is arranged on the partition (7), and an electromagnetic flow meter ( 9), the electromagnetic flowmeter (9) is provided with a three-dimensional electronic compass sensor (10), and the cable system (3) includes a wire rope (11) suspending the detector body (2) and a The detector body (2) provides a power supply and communication cable (12) for power supply and communication. 2. The measuring device for the flow direction of groundwater flow rate in the vertical borehole according to claim 1, characterized in that: a cable spool pay-off device (13) is provided on the ground, and the cable spool pay-off device (13) is connected to the The cable system (3) is connected, a working tripod (14) is arranged above the vertical drilling hole (1), and a pay-off guide wheel (15) is arranged on the working tripod (14), and the The system (3) bypasses the pay-off guide wheel (15). 3. The measuring device for the flow direction of groundwater flow in the vertical borehole according to claim 2, wherein the glass bin (4) is provided with a flowmeter protection frame (16) for protecting the electromagnetic flowmeter (9). . 4. The device for measuring the flow direction of groundwater flow rate in a vertical borehole according to claim 3, characterized in that: a rubber cone (17) with a head facing downward is provided at the bottom of the current meter protective frame (16). 5. The device for measuring the flow direction of groundwater flow in a vertical borehole according to claim 4, characterized in that: a plurality of LED lights (18) are provided on the lower surface of the partition plate (7), and the LED lights (18) Make a circle around the camera (8). 6 . The device for measuring the flow direction of groundwater flow velocity in a vertical borehole according to claim 5 , wherein a rotational speed sensor is provided on the working tripod ( 14 ). 7 . 7. The device for measuring the flow direction of groundwater flow in a vertical borehole according to claim 6, wherein the power supply communication cable (12) is fixedly connected to the wire rope (11) through a wire clip (19), so that the The wire clips (19) are evenly arranged with the position of the electromagnetic flowmeter (9) as a starting point. 8. The device for measuring the flow direction of groundwater velocity in a vertical borehole according to claim 7, further comprising a receiving terminal (20) connected to the detector body (2) through the power supply communication cable (12) ), the receiving terminal (20) comprises a main processor module (24) and a rotational speed signal processing module (21), a video signal processing module (22) and an azimuth signal processing module (21) connected with the main processor module (24) A module (23), the rotational speed signal processing module (21) is electrically connected to the electromagnetic flowmeter (9) through the power supply communication cable (12), and the video signal processing module (22) communicates through the power supply The cable (12) is electrically connected with the camera (8), and the azimuth signal processing module (23) is electrically connected with the three-dimensional electronic compass sensor (10) through the power supply communication cable (12). 9. The measuring device of the groundwater flow direction in the vertical borehole according to claim 8, characterized in that: an excitation coil is installed inside the electromagnetic flowmeter (9), and the surface of the electromagnetic flowmeter (9) is perpendicular to the magnetic field line. A pair of electrodes communicated with the water body are set in the direction. 10 . The device for measuring the flow direction of groundwater flow in a vertical borehole according to claim 9 , wherein the camera (8) is a wide-angle lens camera, and an angle scale is provided at the bottom of the lower cavity of the glass bin (4). 11 .

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