CN210222588U - A joint control device for groundwater extraction and groundwater level in well irrigation area - Google Patents
A joint control device for groundwater extraction and groundwater level in well irrigation area Download PDFInfo
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- CN210222588U CN210222588U CN201921516551.8U CN201921516551U CN210222588U CN 210222588 U CN210222588 U CN 210222588U CN 201921516551 U CN201921516551 U CN 201921516551U CN 210222588 U CN210222588 U CN 210222588U
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Abstract
本实用新型公开了一种井灌区地下水开采量与地下水位联合控制装置，包括水位监测装置、抽水井管和水量监测装置，所述水位监测装置设置在抽水井管的一侧，所述水量监测装置设置在抽水井管顶部的管壁上，所述抽水井管靠近水量监测装置的一端设置有出水口，所述水量监测装置靠近出水口的一侧设置有电磁控制阀门，所述电磁控制阀门设置在抽水井管的管壁上，本实用新型所达到的有益效果是：本实用新型一种井灌区地下水开采量与地下水位联合控制装置由于测量通道是段光滑直管，不会阻塞，特别适用于固体颗粒的液固二相流体，如高矿化度水、泥浆水等；无压损，节能效果好；不受流体的湿度、密度、粘度、压力和电导率变化影响；流量范围大，口径范围宽。
The utility model discloses a combined control device for groundwater exploitation and groundwater level in a well irrigation area, comprising a water level monitoring device, a water pumping well pipe and a water volume monitoring device. The water level monitoring device is arranged on one side of the pumping well pipe, and the water volume monitoring The device is arranged on the pipe wall at the top of the water pumping well pipe. The water outlet is provided at one end of the water pumping well pipe close to the water quantity monitoring device. The side of the water quantity monitoring device close to the water outlet is provided with an electromagnetic control valve. The electromagnetic control valve The utility model is arranged on the pipe wall of the pumping well pipe, and the beneficial effects achieved by the utility model are as follows: the utility model is a combined control device for the groundwater exploitation amount and the groundwater level in the well irrigation area. Suitable for liquid-solid two-phase fluid of solid particles, such as high salinity water, mud water, etc.; no pressure loss, good energy saving effect; not affected by changes in humidity, density, viscosity, pressure and conductivity of the fluid; large flow range , a wide caliber range.
Description
Technical Field
The utility model relates to a well irrigation district groundwater exploitation volume and ground water level combined control device belongs to the groundwater exploitation and implements control and dynamic management technical field.
Background
At present, the mining quantity control and water level control of underground water overstraining in an agricultural irrigation area are mainly based on post management, or the mining quantity and water level are separately monitored and controlled. The current known advanced underground water depth measuring instrument is characterized in that a probe is used for carrying a wire to be placed in a well, scales are marked on the wire, the rear end of the wire is connected to a receiving instrument, the receiving instrument sends out signals after the probe is grounded on the water surface, and the scales on the wire are the height from the water surface to the ground, namely the burial depth. But it has the problem that the coefficient of expansion with heat and contraction with cold of the electric wire is large, and the measurement precision is influenced to a certain extent because the measurement is needed in winter and summer. Moreover, the scale on the wire is only accurate to 5cm, and the measurement requirement is accurate to 1cm, so the accuracy is not enough. The electric wire is easy to elongate after being wound and unwound for many times, the electric wire is easy to break from the inside to cause instrument scrapping, and the instrument is expensive.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a well irrigation district groundwater exploitation volume and ground water level joint control device.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a well irrigation district groundwater exploitation volume and ground water level combined control device, including water level monitoring device, well casing and water yield monitoring device draw water, water level monitoring device sets up the one side at the well casing that draws water, water yield monitoring device sets up on the pipe wall at well casing top that draws water, the one end that the well casing that draws water is close to water yield monitoring device is provided with the delivery port, one side that water yield monitoring device is close to the delivery port is provided with solenoid electric valve, solenoid electric valve sets up on the pipe wall of well casing that draws water.
As the utility model discloses a preferred technical scheme of irrigated well district groundwater exploitation volume and ground water level combined control device, water level monitoring device comprises digital display instrument, magnetic spring switch, magnet steel float fluviograph and stainless steel hollow tube, digital display instrument fixed mounting is at the top of stainless steel hollow tube, magnet steel float fluviograph sets up on the pipe wall of stainless steel hollow tube intermediate position, just magnet in the magnet steel float fluviograph is built-in the inside of stainless steel hollow tube, the magnetic spring switch is provided with two, two the inside at the stainless steel hollow tube is all installed to the magnetic spring switch, and two the magnetic spring switch sets up the top and the below at magnet steel float fluviograph respectively.
As the utility model discloses a preferred technical scheme of well irrigation district groundwater production volume and ground water level joint control device, water yield monitoring devices comprises pipeline, electrode and excitation coil, the electrode is provided with two, and two the electrode is located the top and the below and the symmetrical setting of pipeline respectively, excitation coil is provided with two, and two excitation coil sets up both sides and symmetrical setting at the pipeline respectively.
As the utility model discloses a preferred technical scheme of well irrigation district groundwater exploitation volume and ground water level joint control device, water level monitoring device constructs with the parallel construction of well casing that draws water, water level monitoring device and solenoid electric valve are with electric wire electric connection.
As the utility model discloses a preferred technical scheme of well irrigation district groundwater exploitation volume and ground water level joint control device, water yield monitoring devices constructs with the parallel construction of well casing that draws water, water yield monitoring devices and solenoid electric valve are with electric wire electric connection.
As the utility model discloses a preferred technical scheme of well irrigation district groundwater exploitation volume and ground water level joint control device, the electromagnetic flowmeter that water yield monitoring devices adopted comprises parts such as sensor, converter and display, and the general measurement conducting fluid's that electromagnetic flowmeter made according to Faraday's electromagnetic induction law flow meter.
As the utility model discloses an optimal technical scheme of well irrigation district groundwater production volume and ground water level joint control device, the digital display instrument adopts LED digital display instrument to make, the digital display instrument can connect 10 to 20mA electric current, the appearance size length of digital display instrument is multiplied by wide multiplied by high and is 155cm multiplied by 180 cm.
The utility model discloses the beneficial effect who reaches is: the utility model relates to a well irrigation area underground water exploitation volume and ground water level combined control device, because the measuring channel is a smooth straight pipe section, can not block, is particularly suitable for the liquid-solid two-phase fluid of solid particles, such as highly mineralized water, muddy water, etc.; no pressure loss and good energy-saving effect; is not affected by the humidity, density, viscosity, pressure and conductivity changes of the fluid; the flow range is large, and the aperture range is wide.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the middle water level monitoring device of the present invention;
fig. 3 is a control circuit diagram of the reed switch of the present invention;
fig. 4 is a schematic structural view of the medium water amount monitoring device of the present invention;
fig. 5 is a trend graph of electromotive force, magnetic induction intensity and voltage in the reclaimed water amount monitoring device of the utility model;
FIG. 6 is a first schematic diagram of the operation control mode of the valve after water quantity and water level early warning;
FIG. 7 is a second schematic diagram of the operation control mode of the valve after the water amount and water level pre-warning;
fig. 8 is a third schematic diagram of the operation control mode of the valve after the water quantity and water level early warning.
In the figure: 1. a water level monitoring device; 2. a water pumping well pipe; 3. a water amount monitoring device; 4. an electromagnetic control valve; 5. a water outlet; 6. a digital display instrument; 7. a reed switch; 8. a magnetic steel floater water level gauge; 9. a stainless steel hollow tube; 10. a pipeline; 11. an electrode; 12. and a field coil.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1
As shown in fig. 1-8, the utility model provides a well irrigation district groundwater production volume and ground water level combined control device, including water level monitoring device 1, well casing 2 and water yield monitoring device 3 draw water, water level monitoring device 1 sets up the one side at well casing 2 draws water, water yield monitoring device 3 sets up on the pipe wall at well casing 2 top draws water, the one end that well casing 2 is close to water yield monitoring device 3 of drawing water is provided with delivery port 5, one side that water yield monitoring device 3 is close to delivery port 5 is provided with solenoid electric valve 4, solenoid electric valve 4 sets up on the pipe wall of well casing 2 draws water.
The water level monitoring device 1 is composed of a digital display instrument 6, two magnetic spring switches 7, a magnetic steel floater water level gauge 8 and a stainless steel hollow pipe 9, the digital display instrument 6 is fixedly installed at the top of the stainless steel hollow pipe 9, the magnetic steel floater water level gauge 8 is arranged on the pipe wall of the middle position of the stainless steel hollow pipe 9, a magnet in the magnetic steel floater water level gauge 8 is arranged inside the stainless steel hollow pipe 9, the two magnetic spring switches 7 are arranged inside the stainless steel hollow pipe 9, and the two magnetic spring switches 7 are respectively arranged above and below the magnetic steel floater water level gauge 8.
The water amount monitoring device 3 is composed of a pipeline 10, electrodes 11 and excitation coils 12, the electrodes 11 are provided with two electrodes 11 which are respectively located above and below the pipeline 10 and symmetrically arranged, the excitation coils 12 are provided with two electrodes and two excitation coils 12 which are respectively arranged on two sides of the pipeline 10 and symmetrically arranged.
The water level monitoring device 1 and the pumping well pipe 2 are constructed in parallel, and the water level monitoring device 1 is electrically connected with the electromagnetic control valve 4 through an electric wire.
The water quantity monitoring device 3 and the pumping well pipe 2 are constructed in parallel, and the water quantity monitoring device 3 is electrically connected with the electromagnetic control valve 4 through an electric wire.
The electromagnetic flowmeter adopted by the water amount monitoring device 3 consists of a sensor, a converter, a display and the like, and the electromagnetic flowmeter is a general flow meter for measuring conductive fluid manufactured according to the Faraday's law of electromagnetic induction.
The digital display instrument 6 is made of an LED digital display instrument, the digital display instrument 6 can be connected with a current of 10-20 mA, and the size, the length, the width and the height of the appearance of the digital display instrument 6 are 155cm, 155cm and 180 cm.
Specifically, the water level monitoring device 1 is used for measuring the change of the underground water level under various precipitation or mining conditions, and the basic principle is buoyancy. The specific process is as follows: when the magnetic steel floater water level gauge 8 is fixed at a certain measuring point underwater, the position scale value of the magnetic steel floater water level gauge 8 where the measuring point is located is the underground water level buried depth, the water level range is 0-60m, the resolution is 1cm, the applicable temperature range is-20-80 ℃, the floater width is 30mm, and the floater thickness is 10 mm.
The specific operation process of the water level monitoring device 1 is that when the groundwater level changes, a magnetic steel floater in a magnetic steel floater water level gauge 8 installed on a stainless steel hollow pipe 9 moves up and down along the stainless steel hollow pipe 9 along with the water level change, a corresponding magnetic reed pipe is arranged inside the stainless steel hollow pipe 9 and affected by the magnetic field change of the magnetic steel floater, and the magnetic reed pipe can correspondingly output a resistance signal or a switch signal corresponding to the groundwater level change. The contact material of the reed switch 7 on the reed pipe is rhodium oxide which has long service life and high temperature resistance, and in order to reduce the wiring cost and the construction difficulty, inlet and outlet lines corresponding to all switches are concentrated in the stainless steel hollow pipe 9. The principle of the switch controlled by the magnetic steel floater water level gauge 8 is to utilize the ring magnet in the floating ball to attract the magnetic reed pipe fixed on the stainless steel hollow pipe 9 and the closing action of the magnetic reed switch 7, thereby controlling the production volume.
The LED digital display instrument at the top end of the water level monitoring device 1 can freely set upper and lower limit water level control points in a measuring range, the position of each control point can be set according to the requirements of customers, the digital display instrument 6 can be connected with 10-20 mA current, and the external dimension length multiplied by the width multiplied by the height is 155cm multiplied by 180 cm.
The water level monitoring device 1 and a water pumping pipe of a production well are constructed in parallel, and the water level monitoring device 1 is connected with the electromagnetic valve control device in a wire mode.
The water quantity monitoring device 3 adopts an electromagnetic flowmeter which is composed of a sensor, a converter, a display and the like, and the electromagnetic flowmeter is a general flow meter for measuring conductive fluid manufactured according to Faraday's law of electromagnetic induction.
The electromagnetic flowmeter of the water quantity monitoring device 3 is used for linearly converting the volume flow value of the liquid flowing into the pipeline 10 into an induced potential signal and sending the signal to the converter through a transmission line. The converter is installed at a place which is not far from the sensor, and amplifies the flow signal sent by the sensor and converts the flow signal into a standard electric signal which is proportional to the flow signal to output, so as to display, accumulate and regulate and control the flow signal.
The water quantity monitoring device 3 is arranged on a water outlet main pipe of the production well and is constructed in parallel with a water pumping main pipe of the production well, and the water quantity monitoring device 3 is connected with the electromagnetic valve control device in a wire mode.
The basic principle of operation of the water quantity monitoring device 3 is as follows:
according to Faraday's law of electromagnetic induction, when a conductor moves in a magnetic field to cut magnetic lines of force, induced electric potential E is generated at two ends of the conductor, the direction of the induced electric potential E is determined by the right-hand rule, the magnitude of the induced electric potential E is in direct proportion to the magnetic induction intensity B of the magnetic field, the length L of the conductor in the magnetic field and the movement speed u of the conductor, and if the B, the L and the u are mutually vertical, the induced electric potential E is directly proportional to the magnetic induction
E ═ B ═ L ═ u (formula 1)
Similarly, when the conductive fluid flows in the vertical direction in the magnetic field to cut the magnetically induced stress lines, an induced potential is generated on the electrodes 11 at both sides of the pipe 10. In a uniform magnetic field with magnetic induction intensity of B, a non-magnetic conduction pipeline 10 with an inner diameter of D is arranged in a direction perpendicular to the direction of the magnetic field, and when conductive liquid flows in the pipeline 10 at a flow velocity of u, the conductive liquid cuts magnetic lines of force:
e ═ B ═ D ═ u (formula 2)
Where u is the average flow velocity over the cross-section of the pipe 10, m/s.
However, the volume flow Qu is equal to the product of the flow velocity u of the fluid and the sectional area (π D2)/4 of the pipe 10, and (equation 2) is substituted into the equation:
qu = (pi D/4B) × E (formula 3)
It can be seen from the above formula that when the diameter D of the pipe 10 is fixed and the magnetic induction B is kept constant, the volume flow Qu is in a linear relationship with the induced electromotive force E and the inner diameter D of the measuring pipe, is inversely proportional to the magnetic induction B of the magnetic field and is independent of other physical parameters, the induced electromotive force E is introduced, and the volume flow can be obtained by measuring the magnitude of the induced electromotive force E.
Respectively insert an electrode 11 in pipeline 10 both sides, just can be according to faraday's electromagnetic induction principle, installed a pair of detection electrode 11 on the pipe wall perpendicular with measuring tube axis and magnetic line of force looks, when conducting liquid along measuring tube axis motion, conducting liquid cuts the magnetic line of force and produces induced electromotive force, and this induced electromotive force is detected by two detection electrode 11, and the numerical value is proportional to the velocity of flow, and its value is:
e = B V D K (formula 4)
In the formula: e-induced potential; k-coefficients related to magnetic field distribution and axial length; b-magnetic induction intensity; v-average flow rate of conductive liquid; d-electrode 11 spacing (measure tube inside diameter).
The sensor transmits the induced potential E as a flow signal to a converter, and after signal processing such as amplification, conversion filtering and the like, the instantaneous flow and the accumulated flow are displayed by a dot-matrix liquid crystal with backlight.
The flow monitoring device measurement conditions meet the following assumptions: the magnetic field is a uniformly distributed constant magnetic field; the flow velocity of the measured fluid is distributed in an axisymmetric manner; the liquid to be measured is non-magnetic; the conductivity of the measured liquid is uniform and isotropic.
According to the water resource management requirement and the regional ecological environment requirement, a minimum ecological water level H1 and an upper limit mining water level H2 are defined;
the mining control valve adopts an indirect pilot type electromagnetic valve, and the basic principle is that when the mining control valve is electrified, the electromagnetic force pushes the piston to increase the difference between the internal pressure and the external pressure and push the valve to open, and water flows through the electromagnetic control valve 4; when the power is cut off, the spring force pushes the valve or the valve to the middle, and the electromagnetic control valve 4 closes the water inlet.
When the water level detection device is between the lowest ecological water level H1 and the upper limit mining water level H2, the upper coil in the electromagnetic control valve 4 is powered on and the lower coil is powered off, and the electromagnetic control valve 4 is controlled to open the flow outlet 1;
when the water level detection device is higher than the upper limit water level H2, the water level alarm lamp is yellow, the magnetic reed switch 7 is switched off, signals are transmitted simultaneously, the upper coil and the lower coil in the electromagnetic control valve 4 are powered off, and the electromagnetic control valve 4 is controlled to be closed completely;
when the water level detection device is lower than the lowest ecological water level H1, the water level alarm lamp is orange, and simultaneously transmits signals, the upper coil and the lower coil in the electromagnetic control valve 4 are powered off, and the electromagnetic control valve 4 is controlled to be closed completely;
when the accumulated mining amount is larger than Q1 and the underground water level is between the lowest ecological water level H1 and the upper limit mining water level H2, the water quantity alarm lamp is pink, the upper coil in the electromagnetic control valve 4 is powered off and the lower coil is powered on, meanwhile, the electromagnetic control valve 4 closes the outlet 1 with larger flow rate, opens the outlet 2 with smaller flow rate, and the flow capacity of the pipeline 10 is reduced by half;
when the cumulative production is greater than Q1 and the ground water level is lower than the lowest ecological water level H1 or higher than the upper limit production water level H2, the water quantity warning lamp is red, the upper coil and the lower coil in the solenoid-operated valve 4 are powered off, and the solenoid-operated valve 4 closes the water inlet.
FIG. 6 shows that the water level is between the ecological water level H1 and the upper limit mining water level H2, but the mining amount exceeds the planned allowable mining amount Q1, the upper coil is powered off, the lower coil is powered on, the large flow outlet 1 is closed, and the flow inlet and the small flow outlet 2 are opened;
FIG. 7 shows the left diagram showing that the water level is between the ecological water level H1 and the upper limit mining water level H2, the mining amount does not exceed the planned allowable mining amount Q1, the upper coil is powered on, the lower coil is powered off, the small flow outlet 2 is closed, and the flow inlet and the large flow outlet 1 are opened;
FIG. 8 shows that the water level is lower than the ecological water level H1 or higher than the upper limit exploitation water level H2, the exploitation amount exceeds the scheduled allowable exploitation amount Q1, the upper coil and the lower coil are powered off, the flow inlet is closed, and the exploitation of underground water is stopped.
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 described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a well irrigation district groundwater exploitation volume and ground water level combined control device, a serial communication port, including water level monitoring device (1), well casing (2) and water yield monitoring device (3) draw water, water level monitoring device (1) sets up the one side at well casing (2) draws water, water yield monitoring device (3) set up on the pipe wall at well casing (2) top draws water, the one end that well casing (2) are close to water yield monitoring device (3) of drawing water is provided with delivery port (5), one side that water yield monitoring device (3) are close to delivery port (5) is provided with solenoid electric valve (4), solenoid electric valve (4) set up on the pipe wall of well casing (2) draws water.
2. The device for controlling the underground water production and the underground water level in the well irrigation area in combination according to claim 1, it is characterized in that the water level monitoring device (1) consists of a digital display instrument (6), a magnetic reed switch (7), a magnetic steel floater water level gauge (8) and a stainless steel hollow pipe (9), the digital display instrument (6) is fixedly arranged at the top of the stainless steel hollow pipe (9), the magnetic steel floater water level meter (8) is arranged on the pipe wall at the middle position of the stainless steel hollow pipe (9), and the magnet in the magnetic steel floater water level gauge (8) is arranged in the stainless steel hollow pipe (9), two magnetic reed switches (7) are arranged, the two magnetic reed switches (7) are both arranged in the stainless steel hollow pipe (9), and the two magnetic reed switches (7) are respectively arranged above and below the magnetic steel floater water level gauge (8).
3. A combined control device of underground water production and underground water level in a well-irrigation area according to claim 1, characterized in that the water amount monitoring device (3) is composed of a pipeline (10), two electrodes (11) and two excitation coils (12), wherein the two electrodes (11) are symmetrically arranged above and below the pipeline (10), respectively, and the two excitation coils (12) are symmetrically arranged on two sides of the pipeline (10), respectively.
4. The combined control device for the underground water exploitation amount and the underground water level of the well irrigation area according to claim 1, wherein the water level monitoring device (1) and the pumping well pipe (2) are constructed in parallel, and the water level monitoring device (1) is electrically connected with the electromagnetic control valve (4) through an electric wire.
5. The combined control device for the underground water exploitation amount and the underground water level of the well irrigation area according to claim 1, wherein the water amount monitoring device (3) and the pumping well pipe (2) are constructed in parallel, and the water amount monitoring device (3) is electrically connected with the electromagnetic control valve (4) through an electric wire.
6. The combined control device for the exploitation amount of underground water and the water level in the well-irrigated area according to claim 1, characterized in that the water amount monitoring device (3) adopts an electromagnetic flowmeter which is composed of a sensor, a converter, a display and the like, and the electromagnetic flowmeter is a flow meter which is manufactured according to Faraday's law of electromagnetic induction and is used for generally measuring conductive fluid.
7. The device for controlling the underground water exploitation amount and the underground water level in the well irrigation area in a combined mode according to claim 2, wherein the digital display instrument (6) is made of an LED digital display instrument, the digital display instrument (6) can be connected with 10-20 mA current, and the size, the length, the width and the height of the appearance of the digital display instrument (6) are 155cm x 180 cm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110442176A (en) * | 2019-09-12 | 2019-11-12 | 水利部牧区水利科学研究所 | A joint control device for groundwater exploitation and groundwater level in well irrigation area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110442176A (en) * | 2019-09-12 | 2019-11-12 | 水利部牧区水利科学研究所 | A joint control device for groundwater exploitation and groundwater level in well irrigation area |
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