CN206594165U - Underground water vertrep amount and evaporative capacity measuring apparatus - Google Patents

Abstract

The utility model relates to a measuring device for vertical supply and evaporation of groundwater, which comprises a water supply bucket, a water supply bucket, a balance cup, and a evaporative column. The pipeline is connected with the lysimeter column, the water supply pipeline is provided with a water supply solenoid valve, and the connection pipeline is provided with a drain valve; the balance cup is also provided with an overflow port, and the rain gauge is provided at the bottom of the overflow port; the water supply bucket is provided with a The upper limit switch, the lower limit switch and the ball float, the upper limit switch is arranged on the upper end of the replenishment bucket, the lower limit switch is arranged on the lower end of the water replenishment bucket, and the ball float is located between the upper limit switch and the lower limit switch. The utility model has the advantages of simple structure, novel and reasonable design, which can provide sufficient water source for the replenishment tank in time, ensures the continuous progress of the monitoring test, avoids too much participation of human factors, has accurate measurement, high precision and convenient operation; and the cost is low, greatly improving Efficiency of evaporation monitoring.

Description

Measuring device for groundwater vertical recharge and evaporation

technical field

The utility model relates to the technical field of hydrogeology and groundwater resource monitoring, in particular to a measuring device for vertical groundwater replenishment and evaporation.

Background technique

The recharge of groundwater reflects the renewable capacity of the aquifer, and is a key parameter for the management and rational development and utilization of groundwater resources. Quantitative evaluation of groundwater recharge is the basis for studying large-scale hydrological cycle processes and the key to sustainable development and utilization of groundwater. Groundwater recharge and phreatic evaporation are the core source-sink items of groundwater numerical simulation, and are important parameters for the evaluation of aquifer contamination and the control of groundwater pollution. There are many methods for measuring groundwater recharge and phreatic evaporation, but the commonly used instruments for directly measuring groundwater recharge and phreatic evaporation are lysimeters and subsurface osmometers, among which subsurface osmometers are economical and widely used. However, the water replenishment device of the underground permeameter uses a Marriott bottle for water replenishment. The water replenishment device has the following problems: ① large measurement error and low precision, the error is mainly caused by the human error of different observers, and its observation accuracy is 0.1 mm; ② water replenishment The process must be manually operated, which is time-consuming and labor-intensive. Especially when the evaporation is large, if the staff does not check in place, it will cause water shortage in the replenishment bucket, resulting in interruption of test data.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model provides a groundwater vertical supply and evaporation measurement device, which can realize water supply, water replenishment and continuous monitoring of the infiltration and submerged evaporation of the lysimeter column, which is easy to operate and avoids human errors , improve monitoring efficiency.

According to the design scheme provided by the utility model, a groundwater vertical supply and evaporation measurement device includes a water supply bucket and a water supply bucket. The outlet of the water supply tank is connected to the water inlet of the water supply tank through a water supply pipeline. The water supply solenoid valve also includes a balance cup and a lysimeter column. The water outlet of the replenishment bucket is connected to the balance cup through a water replenishment pipeline, and the water outlet of the balance cup is connected to the lysimeter column through a connection pipeline. A solenoid valve for replenishing water is provided, and a drain valve is provided on the connecting pipeline; an overflow port is also provided on the balance cup, and the rain gauge is provided at the lower end of the overflow port; There are an upper limit switch, a lower limit switch and a ball float, the upper limit switch is arranged on the upper end of the replenishment bucket, the lower limit switch is arranged on the lower end of the water replenishment bucket, and the ball float is located between the upper limit switch and the lower limit switch.

As mentioned above, the described water replenishment barrel includes a barrel body and a loam cake, and the barrel body and loam cake form a sealed cavity, and an exhaust pipeline is also arranged on the described loam cake, and an exhaust pipe is arranged on the exhaust pipeline. The electromagnetic valve.

Preferably, a controller is also included; said controller is connected to the rain gauge, the upper limit switch, the lower limit switch, the water supply solenoid valve, the water replenishment solenoid valve and the exhaust solenoid valve respectively.

As mentioned above, the ball float includes a magnetic grid sensor electrically connected to the controller.

As mentioned above, the controller includes a host, a control panel and a display panel that are electrically connected to the host, and the control panel is provided with a manual-automatic switching knob, a water supply solenoid valve switch button, an exhaust solenoid valve switch button and water supply solenoid valve switch button; the display panel is an LED digital tube electrically connected with the host.

As mentioned above, the rain gauge is a self-recording rain gauge.

The beneficial effects of the utility model:

The utility model is simple in structure, novel and reasonable in design, and solves the problems of low precision, large error, time-consuming and labor-intensive problems caused by human factors in the water supply device in the prior art. Provide sufficient water source for the replenishment bucket in time to ensure the continuous monitoring test, avoid too much participation of human factors, accurate measurement, high precision, easy operation; and low cost, greatly improving the efficiency of evaporation monitoring.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

detailed description:

In the figure, the number 1 represents the water supply bucket, the number 2 represents the water supply bucket, the number 3 represents the upper limit switch, the number 4 represents the ball float, the number 5 represents the water supply pipeline, the number 6 represents the lower limit switch, and the number 7 represents the water supply solenoid valve. The number 8 stands for the rain gauge, the number 9 stands for the drain valve, the number 10 stands for the lysimeter column, the number 11 stands for the balance cup, the number 12 stands for the water supply solenoid valve, the number 13 stands for the automatic and manual switching knob, and the number 14 stands for the switch button of the water supply solenoid valve. 15 represents the switch button of the exhaust solenoid valve, 16 represents the switch button of the water replenishment solenoid valve, 17 represents the exhaust solenoid valve, 18 represents the connection interface of the rain gauge, 19 represents the control interface of the solenoid valve, and 20 represents the connection interface of the sensor. 21 represents a communication interface, reference numeral 22 represents a controller, and reference numeral 23 represents a display panel.

Below in conjunction with accompanying drawing and technical scheme, the utility model is described in further detail.

Embodiment, referring to Fig. 1, a kind of groundwater vertical replenishment amount and evaporation measuring device, comprise water supply tank, replenishment bucket, the outlet of water supply tank is connected with the water inlet of replenishment tank through water supply pipeline, is provided with water supply on the water supply pipeline The solenoid valve also includes a balance cup and a lysimeter column. The water outlet of the replenishment bucket is connected to the balance cup through a water replenishment pipeline, and the water outlet of the balance cup is connected to the lysimeter column through a connection pipeline. There is a water replenishment solenoid valve, and a drain valve is arranged on the connecting pipeline; an overflow port is also arranged on the balance cup, and the rain gauge is arranged at the lower end of the overflow port; the water replenishment bucket is provided with The upper limit switch, the lower limit switch and the ball float, the upper limit switch is arranged on the upper end of the replenishment bucket, the lower limit switch is arranged on the lower end of the water replenishment bucket, and the ball float is located between the upper limit switch and the lower limit switch. The limit switch is used to limit the highest water level and the lowest water level, and the solenoid valve is used to realize the automatic water replenishment process. When the evaporation is large or the personnel inspection is not in place, the lack of test data is avoided; through the water supply bucket, water supply bucket, balance cup and rain gauge With the cooperation, it can provide sufficient water source for the replenishment tank in time, ensure the continuous progress of the monitoring test, avoid too much participation of human factors, accurate measurement, high precision, and convenient operation.

Implementation of a groundwater vertical supply and evaporation measurement device described in the utility model, when the water level in the replenishment barrel reaches the set minimum water level, the water supply solenoid valve is triggered by the lower limit switch to start supplying water to the replenishment barrel to reach the set minimum water level. When the maximum water level is set, the upper limit switch triggers to stop the water supply. The water replenishment bucket supplies water to the lysimeter column through the balance cup; when the atmospheric precipitation infiltrates into the lysimeter column and is higher than the set water level of the lysimeter column, it infiltrates to replenish the groundwater, and stores it in the self-recording rain gauge through the balance cup to record the infiltration quantity.

As mentioned above, the described water replenishment barrel includes a barrel body and a loam cake, and the barrel body and loam cake form a sealed cavity, and an exhaust pipeline is also arranged on the described loam cake, and an exhaust pipe is arranged on the exhaust pipeline. The electromagnetic valve.

Preferably, a controller is also included; said controller is connected to the rain gauge, the upper limit switch, the lower limit switch, the water supply solenoid valve, the water replenishment solenoid valve and the exhaust solenoid valve respectively.

As mentioned above, the ball float includes a magnetic grid sensor electrically connected to the controller. The magnetic grid sensor is used as the measurement sensor, and the measurement accuracy can reach 0.01 mm, which reduces the error of manual reading and improves the measurement accuracy. At the same time, the sensor signal is transmitted to the controller, and the instantaneous submerged evaporation can be directly read on the display after simple calculation. and cumulative diving evaporation.

As mentioned above, the controller includes a host, a control panel and a display panel that are electrically connected to the host, and the control panel is provided with a manual and automatic switching knob, a water supply solenoid valve switch button, an exhaust solenoid valve switch button and water supply solenoid valve switch button; the display panel is an LED digital tube electrically connected with the host. The controller realizes real-time data display, data storage and control mode switching; the measured data can be displayed and stored in real time, which is convenient for users to analyze the data. The limit switches for the highest and lowest water levels are installed in the replenishment bucket. At the lowest water level, the water supply barrel supplies water to the replenishment barrel. When the highest water level is reached, the water supply is stopped, and at the same time, the infiltration and evaporation of the lysimeter column are measured. The measurement of infiltration is realized by rain gauge, and the measured data is transmitted to the memory and display of the controller; the measurement of submerged evaporation is mainly realized by the magnetic grid sensor installed in the spherical float in the replenishment bucket, and the measured data is transmitted to the memory and display of the controller. Realize automatic and manual mode selection, real-time display and storage of measured data, which provides great convenience for users to analyze data in real time, reduces personnel investment and related costs, and has a high degree of automation.

As mentioned above, the rain gauge is a self-recording rain gauge. The self-recording rain gauge is used to measure the amount of atmospheric precipitation recharging groundwater through the infiltration of lysimeter columns.

The following is a detailed description of the operation and operation process of the device in manual mode:

The installation process of the device is as follows: fix the water supply barrel 1 and the data acquisition and controller 22 at a suitable position, then fix the water supply barrel 2 according to the water level set by the lysimeter column 10, the set water level and the overflow in the balance cup 11 After fixing, connect the water supply pipeline 5; connect the balance cup 11 with the lysimeter column 10 through the drain valve 9 with the connection pipeline; place the self-recording rain gauge 8 at the lower end of the overflow port of the balance cup 11 , to measure infiltration replenishment, and connect the cable of the small self-recording rain gauge 8 to the self-recording rain gauge interface 18 of the controller 22; connect the control of the water supply solenoid valve 7, exhaust solenoid valve 17 and water replenishment solenoid valve Wire to the solenoid valve control interface 19 of the controller 22, connect the signal line of the magnetic grid sensor 4 to the magnetic grid sensor interface 20 of the controller 22; after the connection is completed, utilize the upper limit switch 3 and the lower limit switch 6 to set the maximum water level and minimum water level. The control mode is selected by the automatic/manual selection switch of the controller 22 as required.

The working process of the device in manual mode is: when the water level of the replenishment bucket 2 is close to the set minimum water level, manually press the water supply solenoid valve switch 14, the exhaust solenoid valve switch 15 and the water replenishment solenoid valve switch 16 to make the water supply solenoid valve 7 And the exhaust solenoid valve 17 is opened, the water replenishment solenoid valve 12 is closed, and the water is supplied to the water replenishment barrel 2 by the water supply barrel 1 through the water supply pipe 5; The switch 15 and the replenishment solenoid valve switch 16 close the water supply solenoid valve 7 and the exhaust solenoid valve 17, and open the replenishment solenoid valve 12 to complete the replenishment process; after the replenishment is completed, replenish water to the lysimeter column 10 through the balance cup 11 to replenish evaporation The amount of water lost will cause the spherical buoy (including the magnetic grid sensor) in the water replenishment bucket 2 to move downward, and the magnetic grid sensor 4 will send a pulse signal to the data acquisition and controller 22 at the same time, through the data acquisition and controller 22. The single-chip microcomputer performs simple calculations, converts the pulse signal into displacement, and displays the measured evaporation on the display 23 while storing; The overflow port enters the self-recording rain gauge 8 to record the groundwater infiltration recharge, and at the same time transmits the data to the controller 22, and displays the measured infiltration recharge on the display 23 while storing.

The utility model is not limited to the above-mentioned specific implementation, and those skilled in the art can also make various changes accordingly, but any equivalent or similar changes to the utility model should be covered within the scope of the claims of the utility model.

Claims (6)

1. A groundwater vertical supply and evaporation measuring device, comprising a water supply barrel and a water replenishment barrel, the water supply barrel outlet is connected with the water supply barrel water inlet by a water supply pipeline, and a water supply solenoid valve is arranged on the water supply pipeline, and it is characterized in that, It also includes a balance cup and a lysimeter column. The outlet of the water replenishment barrel is connected to the balance cup through a water replenishment pipeline, and the outlet of the balance cup is connected to the lysimeter column through a connection pipeline. The water replenishment pipeline is provided with a water replenishment electromagnetic valve, the connecting pipeline is provided with a drain valve; the balance cup is also provided with an overflow port, and the rain gauge is provided at the lower end of the overflow port; Switch and ball float, the upper limit switch is arranged on the upper end of the water replenishment bucket, the lower limit switch is arranged on the lower end of the water replenishment bucket, and the ball float is located between the upper limit switch and the lower limit switch. 2. The groundwater vertical replenishment and evaporation measurement device according to claim 1, wherein the water replenishment barrel comprises a barrel body and a loam cake, and the barrel body and loam cake form a sealed cavity, and the The above-mentioned upper cover is also provided with an exhaust pipeline, and an exhaust solenoid valve is arranged on the exhaust pipeline. 3. The groundwater vertical recharge and evaporation measuring device according to claim 2, further comprising a controller; said controller is connected with rain gauge, upper limit switch, lower limit switch, water supply electromagnetic valve, replenishment solenoid valve and exhaust solenoid valve are connected with each other for signals. 4. The device for measuring vertical recharge and evaporation of groundwater according to claim 3, wherein the ball float includes a magnetic grid sensor electrically connected to the controller. 5. The groundwater vertical recharge and evaporation measuring device according to claim 3, wherein said controller comprises a main engine and a control panel and a display panel electrically connected to the main engine respectively, said control panel There are manual and automatic switching knobs, water supply solenoid valve switch buttons, exhaust solenoid valve switch buttons and water replenishment solenoid valve switch buttons; the display panel is an LED digital tube electrically connected to the host. 6. The device for measuring vertical recharge and evaporation of groundwater according to claim 1, wherein the rain gauge is a self-recording rain gauge.