CN117823138A - Measurement and control system and method for preventing collapse of pipe well for pumping deep well pump - Google Patents
Measurement and control system and method for preventing collapse of pipe well for pumping deep well pump Download PDFInfo
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- CN117823138A CN117823138A CN202410053816.4A CN202410053816A CN117823138A CN 117823138 A CN117823138 A CN 117823138A CN 202410053816 A CN202410053816 A CN 202410053816A CN 117823138 A CN117823138 A CN 117823138A
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Abstract
The invention discloses a measurement and control system and a method for preventing collapse of a pipe well pumped by a deep well pump, wherein the measurement and control system comprises the following components: a current sensor, a water quality turbidity sensor, a pressure sensor, a control box and an alarm device; the sensor and the alarm device are connected with a controller in the control box; the method comprises the steps of judging whether the internal condition of a pipe well is abnormal or not through the control box and multiple information, and controlling the working state of a water pump motor; the invention can indirectly protect the grain yield while effectively protecting the pipe well, and has better agricultural application prospect.
Description
Technical Field
The invention belongs to the field of measurement and control systems and methods for preventing collapse of a pipe well pumped by a deep well pump, and particularly relates to a method for judging information provided by various sensors in the well through a control box, so that the pipe well is effectively protected or the service life of the pipe well is prolonged.
Background
At present, most of common people in northwest regions of China plant food crops by adopting a pipe well as an irrigation water source, and pumping underground water in the well to the ground by using a deep well pump for irrigation of the crops. For the conditions of relatively lack of water resources and perennial drought in northwest areas, the mode has become an important and indispensible link in agricultural production. However, continuous mass production of groundwater can lead to serious drop of groundwater level, well drilling depth is deeper and deeper in recent years, and the current depth is basically more than 200 meters. Especially in 8 months dead water period, continuous large amount of exploitation groundwater causes the bottom water source to appear supplying the condition of cutting off, at this moment, because the well depth is up to nearly 200 meters, general user can't discover directly, if deep well pump continues to work, can produce and inhale the sky because of the serious decline of dynamic water level, the pump discharge is the well air, well negative pressure can become very big, and the filter itself intensity just is lower than ordinary cement pipe intensity, in addition the filter is erodeed by groundwater for a long time, the filter of past tube well will be damaged in this moment, can make the well silt increase damage water pump, can seriously directly cause the tube well to scrap. At present, with the increase of the depth of a pipe well and the increase of the underground water exploitation intensity, the scrapped pipe well gradually rises, so that not only is the water taking equipment damaged, but also the environmental resources are damaged and lost, and even the grain yield in China is influenced. Therefore, it is necessary to provide an apparatus for detecting the operation state of a deep well pump in a large-depth pipe well and preventing collapse of the pipe well due to improper production of groundwater.
So far, the prediction collapse technology of oil wells and mines in China is fast to develop, for example: application research of optical fiber acoustic emission detection technology in coal mine well collapse prediction (Shuoshi paper), a stratum collapse rule prediction system, a prediction method and a prediction device thereof (patent number: 202211704587.5), a logging method for rapidly predicting the collapse pressure of a mud/shale stratum (patent number: 202310507766.8) and the like, but the technology is not suitable for a tubular well. First, these techniques are not suitable for large depth agricultural tubing wells. Second, the use of these techniques or devices requires skilled technicians and is not suitable for vast numbers of common farmers.
Finally, whether sonic logging, fiber logging, collapse pressure calculation, etc., most of these methods are characterized by discontinuous monitoring and pay-per-view and expensive. The cost and the cost of the device are too high for users, so the device for preventing the collapse of the pipe well and controlling the water pump to work is urgent and easy to use and low in cost.
Disclosure of Invention
In order to solve the problems, the invention provides a measurement and control system and a measurement and control method for preventing collapse of a pipe well pumped by a deep well pump; the invention aims to prevent the collapse of a pipe well pumped by a deep well pump, and the method is to judge whether the internal condition of the pipe well is abnormal or not and control the working state of a water pump motor at the same time by using a control box.
In order to achieve the above purpose, the following specific technical scheme is adopted in the invention.
Further defined, the method comprises: a current sensor, a water quality turbidity sensor, a pressure sensor, a control box and an alarm device; the sensor and the alarm device are connected with a controller in the control box.
Further defined, the control box comprises a power supply and conversion device, a controller and a signal conversion device.
Further defined, the current sensor is mounted in a three-phase cable path of the deep-well pump motor; the water pump motor monitoring device has the advantage of monitoring the current condition fed back by the water pump motor in real time.
Further limited, the water turbidity sensor needs to be installed at least 30cm below the dynamic water line, so the water turbidity sensor is fixed at the pump head of the water pump, and the line of the water turbidity sensor needs to pass through the PVC pipe; the water quality turbidity sensor has the advantages that the water quality turbidity sensor is always fixed at the pump head and cannot shake due to the influence of the water suction port of the water pump.
Further limited, the pressure sensor is arranged at the upper end of the filter pipe, namely on the surface of the pipe wall above all the sieve holes of the filter pipe, the pressure sensor is required to have waterproof capability, and the circuit of the pressure sensor also passes through the PVC pipe; the pressure sensor has the advantages that the influence of water inlet of the water filtering port on the pressure sensor is reduced to the maximum extent.
Further defined, the specific steps are as follows:
(1) Determining a normal value A0, an alarm value A1 and a limit value A2 of the detection of the working current of the deep well pump according to the working characteristic parameters of the pipe well and the adopted deep well pump;
(2) According to the material yield strength of the water filtering pipe of the pipe well, the normal value detected by the pressure sensor is determined to be P0, the alarm value P1 and the limit value P2;
(3) According to the hydrogeology of the pipe well, determining a normal value T0, an alarm value T1 and a limit value T2 detected by a water turbidity sensor;
(4) Storing the values in the controller, and after the deep well pump starts pumping, detecting the related measured values by the sensor in real time and transmitting the detected values to the controller:
when the current sensor value is between A0 and A1, the following is triggered:
A. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T0 and T1, so that a motor of the deep well pump works normally;
B. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T0 and T1, the alarm is given but the pump is not stopped;
C. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T1 and T2, the alarm is given but the pump is not stopped;
D. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
when the current sensor value is between A1 to A2, the following is triggered:
A. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T0 and T1, so that a motor of the deep well pump works normally;
B. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T0 and T1, the alarm is given but the pump is not stopped;
C. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
D. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
if the measured current range is below A0, the alarm is given and the pump is stopped no matter which range the value of the water turbidity sensor and the value of the pressure sensor are;
in other cases, if any one of the current sensor value, the water turbidity sensor value and the pressure sensor value reaches a limit value or more, the alarm is given and the pump is stopped.
The invention has the following beneficial effects.
The invention adopts three different sensors of a current sensor, a water turbidity sensor and a pressure sensor to monitor the working conditions of a pipe well and a deep well pump, and the three sensors are very suitable for the conditions of small space and low cost of the pipe well in hardware; the different decisions made by the controller for the different situations can essentially satisfy the effective protection of the tubular well for the whole system.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a diagram showing the placement of a pressure sensor according to the present invention.
Fig. 3 shows the internal and external systems of the control box according to the invention.
Fig. 4 shows all cases when the control box judges the current values A0-A1 in the present invention.
Fig. 5 shows all cases when the control box judges the current values A1-A2 in the present invention.
In the figure: 1 a water quality turbidity sensor, 2 a pressure sensor, 3 a control box, 4 a current sensor, 5 a water pump cable, 6 a PVC pipe, 7 a water quality turbidity sensor and pressure sensor circuit, 8 a water filtering pipe, 9 a water pump head, 10 a water pump motor, 11 a water pump water suction port, 20 a pressure sensor mounting part and 21 sieve meshes.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Disadvantages of the prior art: most of the equipment in the detection well is sonic logging, imaging instruments and the like, and the logging equipment is not suitable for a pipe well; because the logging features of these methods are mostly discontinuous monitoring and pay-per-view, the cost is expensive; and the detection equipment is relatively large for the inside diameter of the tubular well, and some equipment is inconvenient to operate.
As shown in fig. 1 and 3, a measurement and control system for preventing collapse of a pipe well pumped by a deep well pump comprises: a current sensor 4, a water quality turbidity sensor 1, a pressure sensor 2, a control box 3 and an alarm device; the sensor and the alarm device are connected with a controller in the control box.
The control box shown in fig. 3 comprises a power supply and conversion device, a controller and a signal conversion device.
As shown in fig. 1, the current sensor 4 is installed in the path of a three-phase cable 5 of a deep-well pump motor 10; if a user requires to install soft starter or frequency converter equipment, the installation position of the current sensor is far away from the equipment as far as possible so as to avoid the interference of the current sensor; it is advantageous to monitor the current fed back by the water pump motor 10 in real time.
As shown in fig. 1, the water turbidity sensor 1 needs to be installed at least 30cm below the dynamic water line, and because the bottom of the pipe well has a sediment layer, attention is paid to the fact that the water turbidity sensor is at least more than one meter away from the bottommost part of the pipe well, so that the water turbidity sensor is the best choice to be fixed at the pump head 9 of the water pump, and the line 7 needs to pass through the PVC pipe 6; the water quality turbidity sensor has the advantage that the water quality turbidity sensor 1 is always fixed at the pump head 9 and cannot shake due to the influence of the water suction port 11 of the water pump.
As shown in fig. 1 and 2, the pressure sensor 2 is installed at an upper end pressure sensor installation place 20 of the water filtering pipe, namely, the pipe wall surface above all the sieve holes 21 of the water filtering pipe 8, the pressure sensor 2 needs to have waterproof capability, and a circuit 7 of the pressure sensor also passes through the PVC pipe 6; it is noted that the user has to prepare the filter tube for the placement of the pressure sensor before the well is run in, which is advantageous in that the influence of the inflow of water through the screen 21 on the pressure sensor 2 is minimized.
As shown in FIG. 3, the wireless communication module is connected and communicated with a mobile phone of a user, and the user can know the state in the well and whether the water pump works normally or not at all.
The specific parameters of the control box are as follows.
(1) Determining a normal value A0, an alarm value A1 and a limit value A2 of the detection of the working current of the deep well pump according to the working characteristic parameters of the pipe well and the adopted deep well pump;
(2) According to the material yield strength of the water filtering pipe of the pipe well, the normal value detected by the pressure sensor is determined to be P0, the alarm value P1 and the limit value P2;
(3) According to the hydrogeology of the pipe well, determining a normal value T0, an alarm value T1 and a limit value T2 detected by a water turbidity sensor;
(4) And storing the value in the controller, and after the deep well pump starts pumping water, detecting the related measured value by the sensor in real time and transmitting the detected value to the controller.
As shown in fig. 4 and 5, the control box specifically determines that:
when the current sensor value is between A0 and A1, the following is triggered:
A. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T0 and T1, so that a motor of the deep well pump works normally;
B. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T0 and T1, the alarm is given but the pump is not stopped;
C. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T1 and T2, the alarm is given but the pump is not stopped;
D. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
when the current sensor value is between A1 to A2, the following is triggered:
A. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T0 and T1, so that a motor of the deep well pump works normally;
B. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T0 and T1, the alarm is given but the pump is not stopped;
C. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
D. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
if the measured current range is below A0, the alarm is given and the pump is stopped no matter which range the value of the water turbidity sensor and the value of the pressure sensor are;
in other cases, if any one of the current sensor value, the water turbidity sensor value and the pressure sensor value reaches a limit value or more, the alarm is given and the pump is stopped.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A measurement and control system for preventing collapse of a well for pumping water from a deep well pump, comprising: a current sensor, a water quality turbidity sensor, a pressure sensor, a control box and an alarm device; the sensor and the alarm device are connected with a controller in the control box.
2. The apparatus of claim 1, wherein the control box comprises a power and conversion device, a controller, and a signal conversion device.
3. The method of claim 1, wherein the current sensor is mounted in a three-phase cable path of a deep-well pump motor.
4. The method of claim 1, wherein the water turbidity sensor is mounted at least 30cm below the dynamic water line, so that it is fixed to the pump head of the water pump, and the line is passed through the PVC pipe.
5. The method of claim 1, wherein the pressure sensor is mounted on the upper end of the filter tube, i.e. on the wall surface of the filter tube above all the openings of the filter tube, and the pressure sensor is required to have water-proof capacity, and the line of the pressure sensor passes through the PVC tube.
6. A prevention and control method of a measurement and control system for preventing collapse of a pipe well pumped by a deep well pump is characterized by comprising the following specific steps:
(1) Determining a normal value A0, an alarm value A1 and a limit value A2 of the detection of the working current of the deep well pump according to the working characteristic parameters of the pipe well and the adopted deep well pump;
(2) According to the material yield strength of the water filtering pipe of the pipe well, the normal value detected by the pressure sensor is determined to be P0, the alarm value P1 and the limit value P2;
(3) According to the hydrogeology of the pipe well, determining a normal value T0, an alarm value T1 and a limit value T2 detected by a water turbidity sensor;
(4) Storing the values in the controller, and after the deep well pump starts pumping, detecting the related measured values by the sensor in real time and transmitting the detected values to the controller:
when the current sensor value is between A0 and A1, the following is triggered:
A. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T0 and T1, so that a motor of the deep well pump works normally;
B. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T0 and T1, the alarm is given but the pump is not stopped;
C. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T1 and T2, the alarm is given but the pump is not stopped;
D. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
when the current sensor value is between A1 to A2, the following is triggered:
A. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T0 and T1, so that a motor of the deep well pump works normally;
B. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T0 and T1, the alarm is given but the pump is not stopped;
C. the value of the pressure sensor is between P0 and P1, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
D. the value of the pressure sensor is between P1 and P2, and the value of the water turbidity sensor is between T1 and T2, alarming and stopping the pump;
if the measured current range is below A0, the alarm is given and the pump is stopped no matter which range the value of the water turbidity sensor and the value of the pressure sensor are;
in other cases, if any one of the current sensor value, the water turbidity sensor value and the pressure sensor value reaches a limit value or more, the alarm is given and the pump is stopped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410053816.4A CN117823138A (en) | 2024-01-15 | 2024-01-15 | Measurement and control system and method for preventing collapse of pipe well for pumping deep well pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410053816.4A CN117823138A (en) | 2024-01-15 | 2024-01-15 | Measurement and control system and method for preventing collapse of pipe well for pumping deep well pump |
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| CN117823138A true CN117823138A (en) | 2024-04-05 |
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| CN202410053816.4A Pending CN117823138A (en) | 2024-01-15 | 2024-01-15 | Measurement and control system and method for preventing collapse of pipe well for pumping deep well pump |
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