Water level measuring instrument for water pumping test

Abstract

The utility model relates to a water level measuring instrument for a water pumping test. The water level measuring instrument consists of a base, a reel arranged on the base and a measuring rope wound on the reel, the base is of a hollow box structure, a driving mechanism used for driving the reel to unwind and wind the measuring rope is installed on the base, and a storage battery used for supplying power to the driving mechanism is installed in the base. The measuring instrument can be used for measuring the water level in the well in the water pumping test process, the reel is used for unwinding the measuring rope, the measuring rope is lowered into the well to measure the water level in the well, the driving mechanism can be used for driving the reel to rotate so as to unwind the measuring rope, and the driving mechanism can be used for driving the reel to rotate so as to wind the measuring rope after the water level measurement is finished. According to the measuring instrument, the reel is automatically controlled to unwind and wind the measuring rope, the labor intensity of workers can be reduced, the efficiency of unwinding and winding the measuring rope can be improved, the rechargeable storage battery provides power, and the measuring instrument can be used outdoors and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogeological survey, in particular to a water level measuring instrument for a pumping test. Background Art

[0002] Pumping test is an important means of hydrogeological survey. Its purpose is to study the important hydrogeological characteristics of aquifers, obtain hydrogeological parameters of aquifers, evaluate the water-richness of aquifers, and provide data for predicting the amount of water inflow from mines and the evaluation of comprehensive utilization of groundwater. Water level measurement is one of the important contents in the process of pumping test. The existing technology for measuring the water level in the pumping well mainly includes two methods: manual measurement and automatic measurement.

[0003] Among them, the water level measuring instruments commonly used for manual water level measurement include water level measuring ropes and water level measuring instruments. Such water level measuring instruments are mainly composed of a measuring rope with a depth label or scale, a bracket or reel for winding the measuring rope, a probe installed at one end of the measuring rope that can be lowered into the well, and an indicator meter or indicator light installed on the ground and electrically connected to the other end of the measuring rope. When measuring the water level, the measuring rope is manually lowered, and the probe is carried into the well by the measuring rope. When the probe touches the water level, the indicator meter or indicator light on the ground will respond, and the length of the measuring rope entering the well is read to obtain the water level data in the pumping well.

[0004] The existing water level measuring instrument for manually measuring water level relies on manual unwinding and rewinding of measuring rope during use, which has high labor intensity, especially when the water level of the pumping well is deep, manual unwinding and rewinding of measuring rope are both laborious. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a water level measuring instrument for a pumping test, which adopts a driving mechanism to automatically unwind and reel in the measuring rope, so as to solve the problem that the prior art relies on manual unwinding and reeling in of the measuring rope, which is labor-intensive and laborious.

[0006] The utility model is realized by the following technical solutions:

[0007] A water level measuring instrument for a pumping test comprises a base, a reel mounted on the base and a measuring rope wound on the reel, wherein the base is a hollow box structure, a driving mechanism for driving the reel to unwind and reel the measuring rope is mounted on the base, and a battery for supplying power to the driving mechanism is mounted inside the base; the battery is a rechargeable battery, and a charging interface electrically connected to the battery is mounted on the base, so that the measuring instrument can be used in the field; when the measuring instrument is used to measure the water level in a pumping well, the measuring rope is unwound by the reel, and the measuring rope is lowered into the well to measure the water level in the well, and the driving mechanism can be used to drive the reel to rotate to unwind and reel the measuring rope, thereby realizing automatic control of the unwinding and reeling of the measuring rope by the reel, reducing the intensity of manual labor, and improving the efficiency of unwinding and reeling the measuring rope.

[0008] Furthermore, two support plates are installed on the top surface of the base, a rotating shaft is arranged between the two support plates, both ends of the rotating shaft are rotatably connected to the two support plates through bearings respectively, the reel is fixedly mounted on the rotating shaft, the rotating shaft is located between the two support plates, and the reel can rotate with the rotating shaft.

[0009] Furthermore, the driving mechanism includes a motor, which is installed on one of the support plates. One end of the rotating shaft is transmission-connected to the output end of the motor. The motor is electrically connected to the battery. The motor is used to drive the rotating shaft to rotate, thereby driving the reel to rotate. The motor is a forward and reverse motor, thereby being able to control the reel to rotate forward to unwind the measuring rope and reverse to reel in the measuring rope.

[0010] Furthermore, the driving mechanism also includes a PLC controller, a first switch and a second switch installed on the base; the motor, the first switch and the second switch are all electrically connected to the PLC controller, the PLC controller is electrically connected to the battery, the first switch is used to control the forward start and stop of the motor, and the second switch is used to control the reverse start and stop of the motor.

[0011] Furthermore, the side wall of the base is provided with heat dissipation holes, through which the heat dissipation of the electrical components inside the base can be promoted.

[0012] Furthermore, a circuit connector is installed on the side wall of the reel, and a probe is installed on the movable end of the measuring rope, and a fixed end thereof is electrically connected to the circuit connector; an electric contact assembly is installed on the end of the rotating shaft away from the motor, and the electric contact assembly is electrically connected to the circuit connector. A wiring channel for laying out the circuit line between the electric contact assembly and the circuit connector is opened on the rotating shaft to facilitate wiring. This circuit line rotates synchronously with the rotating shaft and the reel to avoid entanglement between the circuit line and the support plate during the rotation of the reel and the rotating shaft; a shell is installed on the other support plate where the motor is not installed, and the shell is sleeved on the end of the rotating shaft. An electric contact sheet assembly is installed on the inner side wall of the shell, and the electric contact sheet assembly is in rotational contact with the electric contact sheet assembly to achieve circuit connectivity, and the electric contact sheet assembly is electrically connected to the PLC controller; when the probe is lowered into the pumping well and detects the water level, the probe transmits a signal to the PLC controller, and the PLC controller controls the motor to stop after receiving and processing the signal of the probe, so that the reel can stop unwinding the measuring rope.

[0013] Furthermore, an alarm is installed on the top surface of the base, and the alarm is electrically connected to the PLC controller; when the probe detects the water level, the probe transmits a signal to the PLC controller, and the PLC controller controls the alarm to send an alarm signal after receiving and processing the signal from the probe to prompt the worker to lower the probe into place; specifically, the alarm includes an indicator light and / or a buzzer.

[0014] The beneficial effects of the utility model are:

[0015] The water level measuring instrument for pumping test can be used for measuring the water level in the well during the pumping test. The measuring rope is unwound by the reel, and the measuring rope is lowered into the well to measure the water level in the well. The driving mechanism can be used to drive the reel to rotate to unwind the measuring rope. After the water level measurement is completed, the driving mechanism can be used to drive the reel to rotate to reel in the measuring rope. Compared with the prior art in which the reel is manually rotated to unwind and reel in the measuring rope, the measuring instrument realizes automatic control of the reel for unwinding and reeling in the measuring rope, which can reduce the intensity of manual labor and improve the efficiency of unwinding and reeling in the measuring rope. The measuring instrument is powered by a rechargeable battery, so that the measuring instrument can be used in the field, which is more convenient.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0018] Figure 2 It is a right side structural schematic diagram of the utility model.

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction.

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of the local structure at point B in the middle.

[0021] In the figure: 1-base, 2-reel, 3-measuring rope, 4-battery, 5-probe, 6-indicator light, 7-buzzer, 8-support plate, 9-rotating shaft, 10-motor, 11-PLC controller, 12-first switch, 13-second switch, 14-circuit connector, 15-electric contact assembly, 16-threading channel, 17-housing, 18-electric contact piece assembly, 19-heat dissipation hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0027] The utility model provides a technical solution: a water level measuring instrument for pumping test, such as Figure 1 As shown, it is composed of a base 1, a reel 2, a measuring rope 3, a probe 5, a driving mechanism and an alarm;

[0028] like Figures 1 to 3 As shown, the base 1 is a hollow box structure, a battery 4 is installed inside the base 1, two support plates 8 are installed on the top surface of the base 1, the two support plates 8 are parallel and spaced apart in the left and right directions, a rotating shaft 9 is arranged between the two support plates 8, and both ends of the rotating shaft 9 are rotatably connected to the two support plates 8 through bearings;

[0029] like Figure 1 and Figure 3 As shown, the reel 2 is fixedly mounted on the rotating shaft 9, and the rotating shaft 9 is located between the two support plates 8. The reel 2 can rotate with the rotating shaft 9; Figure 3 and Figure 4 As shown, a circuit connector 14 is installed on the side wall of the reel 2;

[0030] like Figures 1 to 4As shown, the measuring rope 3 is wound on the reel 2, and the movable end of the measuring rope 3 is installed with a probe 5, and its fixed end is electrically connected to the circuit connector 14. It should be noted that the movable end of the measuring rope 3 refers to the end that can be lowered into the pumping well, and the fixed end of the measuring rope 3 refers to the end wound and fixed on the reel 2. The measuring rope 3 is composed of a rope body and a circuit line fixed on the rope body. The rope body is provided with scales and numbers for easy measurement and reading of the well depth. The circuit line supplies power to the measuring rope 3 and transmits the detection signal of the probe 5. This is a well-known technology and will not be repeated here.

[0031] The driving mechanism is composed of a motor 10, a PLC controller 11, a first switch 12 and a second switch 13. The driving mechanism is used to drive the reel 2 to unwind and rewind the measuring rope 3, wherein:

[0032] like Figure 1 and Figure 3 As shown, the motor 10 is installed on one of the support plates 8, one end of the rotating shaft 9 is transmission-connected to the output end of the motor 10, the motor 10 is electrically connected to the battery 4, the motor 10 is used to drive the rotating shaft 9 to rotate, thereby driving the reel 2 to rotate, the motor 10 is a forward and reverse motor such as a stepping motor and a servo motor, so as to control the reel 2 to rotate forward to unwind the measuring rope 3 and reverse to rewind the measuring rope 3, in addition, the output end of the motor 10 can also be equipped with a reducer to control the speed of the reel 2;

[0033] like Figure 3 As shown, the PLC controller 11 is installed inside the base 1, the PLC controller 11 is electrically connected to the battery 4, the motor 10 is electrically connected to the PLC controller 11, the battery 4 can supply power to the driving mechanism, the battery 4 is a rechargeable battery, and the side wall of the base 1 is equipped with a charging interface electrically connected to the battery 4, so that the battery 4 can supply power in the field, and the measuring instrument can be used in the field;

[0034] like Figure 1 and Figure 2 As shown, the first switch 12 and the second switch 13 are both installed on the top surface of the base 1, and the first switch 12 and the second switch 13 are both electrically connected to the PLC controller 11. The first switch 12 is used to control the forward start and stop of the motor 10, and the second switch 13 is used to control the reverse start and stop of the motor 10. The side wall of the base 1 is provided with a threading hole; specifically, the first switch 12 and the motor 10 can be a button switch, a toggle switch, a touch switch, etc. Taking the button switch as an example, when the first switch 12 is pressed, the motor 10 starts and the output end rotates forward, and the reel 2 rotates forward to unwind the measuring rope 3. When the first switch 12 is pressed again, the motor 10 stops. When the second switch 13 is pressed, the motor 10 starts and the output end reverses, and the reel 2 reverses to rewind the measuring rope 3. When the second switch 13 is pressed again, the motor 10 stops;

[0035] like Figure 3 and Figure 4As shown, an electric contact assembly 15 is installed at one end of the rotating shaft 9 away from the motor 10, and the electric contact assembly 15 is electrically connected to the circuit connector 14. A wiring channel for laying the circuit line between the electric contact assembly 15 and the circuit connector 14 is opened on the rotating shaft 9. Specifically, the wiring channel is composed of a threading channel 16 extending from the end surface to the inside opened at the end of the rotating shaft 9 away from the motor 10 and a threading hole opened on the outer wall of the rotating shaft 9 and communicating with the threading channel 16, which is convenient for wiring. This circuit line rotates synchronously with the rotating shaft 9 and the reel 2, so as to avoid entanglement between the circuit line and the support plate 8 during the rotation of the reel 2 and the rotating shaft 9;

[0036] like Figures 1 to 4 As shown, a housing 17 is installed on another support plate 8 where the motor 10 is not installed. The housing 17 is sleeved on the end of the rotating shaft 9. An electric contact assembly 18 is installed on the inner side wall of the housing 17. The electric contact assembly 15 is in rotational contact with the electric contact assembly 18 to achieve circuit connectivity. The electric contact assembly 18 is electrically connected to the PLC controller 11. Specifically, the electric contact assembly 15 includes two electric contacts, namely a neutral line electric contact and a live line electric contact. The electric contact assembly 18 includes two electric contacts, one of which is annular and is a neutral line electric contact, and the other is circular and is a live line electric contact. The shaped live wire electric contact is located inside the annular neutral wire electric contact, and the two are coaxial. During the rotation of the rotating shaft 9, the housing 17 remains fixed along with the support plate 8, and the live wire electric contact and the neutral wire electric contact rotate along with the rotating shaft 9. The live wire electric contact always keeps in contact with the circular live wire electric contact, and the neutral wire electric contact always keeps in contact with the annular neutral wire electric contact, so as to realize the circuit conduction. When the probe 5 is lowered into the pumping well and detects the water level, the probe 5 transmits the signal to the PLC controller 11. After receiving and processing the signal of the probe 5, the PLC controller 11 controls the motor 10 to stop, so that the reel 2 can stop unwinding the measuring rope 3.

[0037] like Figure 1 and Figure 3 As shown, the alarm is installed on the top surface of the base 1, and the alarm is electrically connected to the PLC controller 11; when the probe 5 detects the water level, the probe 5 transmits the signal to the PLC controller 11, and the PLC controller 11 controls the alarm to send an alarm signal after receiving and processing the signal of the probe 5 to prompt the worker to lower the probe 5 into place.

[0038] In this embodiment, Figure 3 As shown, the side wall of the base 1 is provided with heat dissipation holes 19 , through which the heat dissipation of the electrical components inside the base 1 can be promoted.

[0039] In this embodiment, Figure 1 and Figure 3 As shown, the alarm is an indicator light 6 and a buzzer 7, which can emit light and sound to give an alarm.

[0040] The working principle of the measuring instrument in this embodiment is:

[0041] When measuring the water level in the well during the pumping test, the measuring instrument is placed at the wellhead, the base 1 provides support, the movable end of the measuring rope 3 and the probe 5 are placed in the well, and a guide pulley (composed of a clamp that can be clamped and fixed at the wellhead and a fixed pulley installed on the clamp) can be installed at the wellhead to guide the measuring rope 3 to ensure smoothness during unwinding and rewinding of the measuring rope 3;

[0042] When unwinding the measuring rope 3, the first switch 12 is pressed. After the PLC controller 11 receives the control signal of the first switch 12, the PLC controller 11 controls the motor 10 to start and the output end of the motor 10 drives the rotating shaft 9 to rotate forward. The reel 2 rotates forward with the rotating shaft 9 and unwinds the measuring rope 3, so that the measuring rope 3 carries the probe 5 down into the well.

[0043] When the probe 5 is lowered into the pumping well and detects the water level, the probe 5 transmits a signal to the PLC controller 11. After receiving and processing the signal from the probe 5, the PLC controller 11 controls the motor 10 to stop, and the reel 2 immediately stops unwinding the measuring rope 3. At the same time, the PLC controller 11 controls the alarm to send an alarm signal to remind the worker that the probe 5 detects the water level, and obtains the water level data in the pumping well by reading the length of the measuring rope 3 entering the well;

[0044] When winding the measuring rope 3, the second switch 13 is pressed. After the PLC controller 11 receives the control signal of the second switch 13, the PLC controller 11 controls the motor 10 to start and the output end of the motor 10 drives the rotating shaft 9 to reverse, and the reel 2 reverses with the rotating shaft 9 and winds up the measuring rope 3, so that the measuring rope 3 carrying the probe 5 rises in the well;

[0045] During the process of winding or unwinding the measuring rope 3, the first switch 12 or the second switch 13 can be pressed at any time to stop the motor 10;

[0046] When the measuring instrument is used to measure the water level in a pumping well, a rechargeable battery 4 can be used to provide power so that the measuring instrument can be used in the field. The motor 10 can be used to drive the reel 2 to unwind and reel in the measuring rope 3, thereby realizing automatic control of the reel 2 for unwinding and reeling in the measuring rope 3, thereby reducing manual labor intensity and improving the efficiency of unwinding and reeling in the measuring rope 3.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A water level measuring instrument for a pumping test, comprising a base (1), a reel (2) mounted on the base (1), and a measuring rope (3) wound on the reel (2), characterized in that: The base (1) is a hollow box structure. Two support plates (8) are installed on the top surface of the base (1). A rotating shaft (9) is arranged between the two support plates (8). The two ends of the rotating shaft (9) are rotatably connected to the two support plates (8) via bearings respectively. The reel (2) is fixedly mounted on the rotating shaft (9). A driving mechanism for driving the reel (2) to unwind and rewind the measuring rope (3) is installed on the base (1). A storage battery (4) for supplying power to the driving mechanism is installed inside the base (1). The driving mechanism comprises a motor (10). The motor (10) is mounted on one of the support plates (8). One end of the rotating shaft (9) is drivingly connected to the output end of the motor (10). The motor (10) is electrically connected to the storage battery (4). The motor (10) is used to drive the rotating shaft (9) to rotate. The driving mechanism further comprises a PLC controller (11), a first switch (12) and a second switch (13) mounted on the base (1); the motor (10), the first switch (12) and the second switch (13) are all electrically connected to the PLC controller (11); the PLC controller (11) is electrically connected to the storage battery (4); the first switch (12) is used to control the forward rotation start and stop of the motor (10); and the second switch (13) is used to control the reverse rotation start and stop of the motor (10); A circuit connector (14) is installed on the side wall of the reel (2); a probe (5) is installed on the movable end of the measuring rope (3), and its fixed end is electrically connected to the circuit connector (14); an electric contact assembly (15) is installed on the end of the rotating shaft (9) away from the motor (10), and the electric contact assembly (15) is electrically connected to the circuit connector (14); a wiring channel for laying a circuit line between the electric contact assembly (15) and the circuit connector (14) is opened on the rotating shaft (9); a shell (17) is installed on the other support plate (8) where the motor (10) is not installed, and the shell (17) is sleeved on the end of the rotating shaft (9); an electric contact sheet assembly (18) is installed on the inner side wall of the shell (17), and the electric contact sheet assembly (15) is in rotational contact with the electric contact sheet assembly (18), and the electric contact sheet assembly (18) is electrically connected to the PLC controller (11).

2. The pumping test water level measuring instrument according to claim 1, characterized in that: The side wall of the base (1) is provided with a heat dissipation hole (19).

3. The pumping test water level measuring instrument according to claim 1, characterized in that: An alarm is installed on the top surface of the base (1), and the alarm is electrically connected to the PLC controller (11).

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