CN215985650U - Micro-water test device - Google Patents

Abstract

The utility model discloses a micro-water test device, which comprises: the control unit, the hose, the solenoid valve, the immersible pump, first response line and second response line, the immersible pump passes through solenoid valve and hose connection, first response line, the water inlet that the bottommost of second response line is not less than the immersible pump, the solenoid valve, the immersible pump, first response line, the second response line all with control unit electric connection, first response line and second response line use groundwater to realize switching on/off as conducting medium, when first response line, the second response line is not realized switching on through groundwater, the control unit control solenoid valve is closed. The testing device has high precision and is simple and convenient to operate.

Description

Micro-water test device

Technical Field

The utility model relates to the field of hydrogeological environment exploration and monitoring, in particular to a micro-water test device.

Background

The micro-water test of hydrogeology is a common method for testing the permeability coefficient of rock and soil in the field with higher precision, and the hydrogeology parameters of an aquifer are determined according to the change rule of a well water level along with time caused by the increase (or decrease) of the micro water quantity in a transient well hole.

In the existing micro-water test, common excitation modes for causing the water head change of a well hole are as follows: pneumatic, water-injection or water-pumping, impact, etc. The pneumatic pressure type needs special equipment to seal a well hole opening, needs pressurizing equipment such as a pneumatic pump and the like, needs more equipment and a complex operation process, and simultaneously needs conditions such as on-site power supply and the like. The pumping or flooding excitation type operation is simple, a certain volume of water is pumped (or injected) out of the well hole instantly by adopting pumping equipment or flooding equipment, and the water level recovery process is observed. However, the water head excitation process is influenced by the pumping equipment, the size of the orifice, the duration of water injection and the like, so that the condition of 'instant' excitation is difficult to realize, and the test precision is influenced to a certain extent. The impact type is to adopt a solid body (water head exciting device) with a certain volume, instantly put the solid body under the water surface of the well hole or instantly lift the solid body out of the water, to promote the instant rise or fall of the water level of the water surface of the well hole by a certain height, and observe the water level recovery process. In general, the solid used in the method has fixed volume and specific gravity more than 1, and the impact is completed by manual operation when the solid enters or is lifted out of water, so that the requirement of 'instant' can be met in time. However, in the existing impact type micro-water test, the water head exciting device (the solid substance) and the data collecting device (the automatic water level meter) are independent devices, and the defects are as follows: 1. firstly, an automatic water level gauge is placed in a well hole, then a water head is excited to cause water level change, in the process, the water head excitation device is easily adhered to a cable of the automatic water level gauge in the impact or lifting process under the limitation of the caliber of the well hole, water pressure recording of the automatic water level gauge is interfered, water level observation precision is influenced, and therefore test failure is often caused; 2. the water head excitation device is a cylindrical weight with fixed volume and weight, the length and the weight of the water head excitation device cannot be adjusted, the application range is small, and the water head excitation device is inconvenient to carry.

Therefore, in order to solve the problem that the water pumping is triggered instantly in the test and the water level in the well hole is reduced to the designed water head, a micro-water test device which can accurately pump water to the designed water level in the test and is simple and convenient to operate is needed.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: how to realize accurate pumping to the experimental design water level makes the little water test precision of hydrogeology high, easy operation, convenience.

In order to achieve the purpose, the utility model provides the following technical scheme:

a micro-water testing device comprising: the control unit, the hose, the solenoid valve, the immersible pump, first response line and second response line, the immersible pump passes through solenoid valve and hose connection, first response line, the water inlet that the bottommost of second response line is not less than the immersible pump, the solenoid valve, the immersible pump, first response line, the second response line all with control unit electric connection, first response line and second response line use groundwater to realize switching on/off as conducting medium, when first response line, the second response line is not realized switching on through groundwater, the control unit control solenoid valve is closed.

As an improvement of the utility model, the control unit comprises a power supply, a switch, a relay and a power line, the power supply is connected with the relay through the switch and the power line, the electromagnetic valve, the submersible pump, the first induction line and the second induction line are all electrically connected with the relay, the switch controls the submersible pump to be started or stopped through the relay, and the first induction line and the second induction line control the electromagnetic valve to be opened or closed through the relay.

As an improvement of the present invention, the control unit further includes a signal indicator for displaying the on/off status of the first sensing line and the second sensing line.

As an improvement of the utility model, the submersible pump further comprises a centering ring, and the centering ring is arranged between the electromagnetic valve and the submersible pump.

As an improvement of the utility model, it further comprises a clamp which fastens the centering ring to the hose.

As an improvement of the utility model, the water-saving device further comprises a water outlet which is used for discharging underground water in the hose.

As an improvement of the utility model, the power supply is a high-capacity rechargeable mobile power supply.

As an improvement of the utility model, the electromagnetic valve is a miniature electromagnetic valve, and a gap between the electromagnetic valve and the inner wall of the hose is filled and sealed by sealant.

As an improvement of the utility model, the hose is provided with a scale with the division value of 1mm for reading the water level of underground water.

Compared with the prior art, the utility model at least comprises the following beneficial effects:

1. the electromagnetic valve and the submersible pump can be controlled to be closed through the relay, so that the water level in the well can be accurately pumped to the test design depth, and the influence of the backflow water of the hose when the submersible pump is closed is avoided;

2. the underground water level can be conveniently read, a water level meter is not required to be independently used for measuring the water level, and the submersible pump can be operated and controlled to start and stop and the electromagnetic valve can be controlled to be closed more conveniently.

3. The micro-water test of hydrogeology has high precision and simpler and more convenient operation.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings:

FIG. 1 is a schematic structural view of a test apparatus according to the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic structural view of the BB' section in FIG. 2;

wherein, 1, a power supply; 2. a switch; 3. a relay; 4. a hose; 5. an electromagnetic valve; 6. a submersible pump; 7. a centering ring; 8. a first induction line; 9. a second induction line; 10. a signal indicator light; 11. a power line; 12. clamping a hoop; 13. and (7) a water outlet.

Detailed Description

The preferred embodiments of the present invention will be described with reference to the accompanying drawings, wherein the technical solutions described and illustrated are only some embodiments of the present invention, and are not intended to limit the present invention. All other embodiments obtained by a person skilled in the art without making any inventive step based on the following embodiments belong to the protection scope of the present invention.

With reference to fig. 1 to 3, the present invention provides a micro-water testing apparatus, comprising: power 1, switch 2, relay 3, hose 4, solenoid valve 5, immersible pump 6, first induction line 8, second induction line 9, signal indicator lamp 10, power cord 11, power 1 passes through switch 2, power cord 11 with relay 3 links, switch 2 and relay 3 control opening of immersible pump 6 stops, the water that immersible pump 6 was taken out passes through solenoid valve 5 with hose 4 outwards discharges, first induction line 8, second induction line 9 are with signal feedback extremely after the ground water is regarded as the conducting medium intercommunication relay 3, during first induction line 8 and second induction line 9 intercommunication, signal indicator lamp 10 lights, when first induction line 8, second induction line 9 do not pass through ground water intercommunication, signal indicator lamp 10 extinguishes, relay 3 control solenoid valve 5 closes. During specific implementation, the hose is placed in an underground water monitoring well, the underground water level H1 is measured firstly according to design requirements, the first induction line 8 and the second induction line 9 are communicated through underground water as a conductive medium, the signal indicator lamp 10 is turned on at the moment, then the hose is continuously descended to the designed monitoring depth H2, the power switch 2 is turned on, the submersible pump 6 starts pumping water, when the depth in the underground water monitoring well is lowered to be lower than H2, the first induction line 8 and the second induction line 9 are not in contact with the underground water, the signal indicator lamp is turned off at the moment, the relay 3 controls the electromagnetic valve 5 to be turned off, the relay 3 controls the submersible pump 6 to be turned off, the pumping water is stopped, at the moment, the electromagnetic valve 5 in the hose 4 cannot flow back into the hole due to the turning off, the submersible pump 6 is turned off, and the water is not pumped outwards. And (3) automatically acquiring, recording and storing water level change data by using a pressure sensor (not shown in the figure) in the well, and calculating the permeability coefficient of the rock-soil body of the underground water well test section according to the data.

In the technical scheme, because the first induction line 8 and the second induction line 9 are designed, when the depth of the underground well is lower than the experimental design depth, the underground well can be automatically disconnected, the electromagnetic valve and the submersible pump are controlled to be closed through the relay, the water level in the well is accurately pumped to the experimental design depth, the influence of backflow water of the hose when the submersible pump is closed is avoided, and the micro-water test of the hydrogeology is realized, so that the precision is higher, and the operation is simpler and more convenient.

With reference to fig. 1 and 3, the micro-water test device of the present invention includes a centering ring 7, wherein the centering ring 7 is disposed between the electromagnetic valve 5 and the submersible pump 6.

In above-mentioned technical scheme, owing to set up ring placed in the middle, its effect makes the hose placed in the middle, lets the hose axis be closer to the downthehole axis of groundwater promptly, improves experimental precision.

With reference to fig. 1 and 3, the micro-water testing device provided by the utility model further comprises a clamp 12, wherein the centering ring 7 is fastened on the hose 4 by the clamp 12; the power supply 1 is a high-capacity repeatedly rechargeable mobile power supply; the electromagnetic valve 5 is a miniature electromagnetic valve, and a gap between the electromagnetic valve 5 and the inner wall of the hose 4 is filled and sealed by sealant so as to ensure that water in the hose 4 at the upper side and the lower side of the electromagnetic valve 5 is blocked when the electromagnetic valve 5 is closed.

In above-mentioned technical scheme, owing to set up the clamp, can realize centering in, the solenoid valve is fixed in the top of immersible pump more firmly.

With reference to fig. 1 and 3, the hose 4 is provided with a scale with a division value of 1mm for reading the groundwater level.

In the technical scheme, the hose is provided with the scale with the division value of 1mm, so that the groundwater level can be conveniently read, a water level meter does not need to be independently used for measuring the water level, and the submersible pump can be operated and controlled to start and stop and the electromagnetic valve can be controlled to be closed conveniently.

In the description of the present invention, it is to be understood that the terms "lateral end", "outward", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims (9)

1. A micro-water test device, comprising: control unit, hose (4), solenoid valve (5), immersible pump (6), first response line (8) and second response line (9), immersible pump (6) pass through solenoid valve (5) with hose (4) are connected, first response line (8) the bottommost of second response line (9) is not less than the water inlet of immersible pump (6), solenoid valve (5) immersible pump (6) first response line (8), second response line (9) all with control unit electric connection, first response line (8) with second response line (9) use groundwater to realize switching on/off as conducting medium, when first response line (8), second response line (9) do not realize switching on through groundwater, control unit control solenoid valve (5) are closed.

2. The micro-water test device according to claim 1, wherein the control unit comprises a power supply (1), a switch (2), a relay (3) and a power line (11), the power supply (1) is connected with the relay (3) through the switch (2) and the power line (11), the electromagnetic valve (5), the submersible pump (6), the first induction line (8) and the second induction line (9) are all electrically connected with the relay (3), the switch (2) controls the submersible pump (6) to be started or stopped through the relay (3), and the first induction line (8) and the second induction line (9) control the electromagnetic valve (5) to be opened or closed through the relay (3).

3. The micro-water test device as claimed in claim 1, wherein the control unit further comprises a signal indicator lamp (10) for displaying the on/off status of the first sensing line (8) and the second sensing line (9).

4. The micro-water test device according to claim 1, further comprising a centering ring (7), wherein the centering ring (7) is disposed between the electromagnetic valve (5) and the submersible pump (6).

5. A micro-water testing device according to claim 4, further comprising a clamp (12), said clamp (12) fastening said centering ring (7) to said hose (4).

6. The micro-water test device according to claim 1, further comprising a water outlet (13), wherein the water outlet (13) is used for discharging underground water in the hose (4).

7. The micro-water test device as claimed in claim 2, wherein the power supply (1) is a large-capacity rechargeable mobile power supply.

8. The micro-water test device as claimed in claim 1, wherein the solenoid valve (5) is a micro solenoid valve, and a gap between the solenoid valve (5) and the inner wall of the hose (4) is filled and sealed with a sealant.

9. The micro-water test device as claimed in claim 1, wherein the hose (4) is provided with a scale with a division value of 1mm for reading the water level of groundwater.

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