Underground water well washing system

Abstract

The utility model discloses an underground water well washing system which comprises a well washing mechanical unit, a water quality measuring unit and a data collecting and processing unit. The well washing mechanical unit comprises a water pump, a water pumping pipe, a water outlet pipe and a water level sensor, the water level sensor is installed on the water pumping pipe, and the water pump, the water level sensor and the water level sensor are all electrically connected with the data collecting and processing unit; the water quality measurement unit comprises a water quality comprehensive measurement device, a PID photoionization detector and an oil-water interface sensor, and the data acquisition and processing unit is used for acquiring and recording data and controlling the flow speed of the water pump and the well washing time. According to the utility model, equipment such as the oil-water interface sensor and the PID photoionization detector can be utilized to carry out water quality preliminary screening before well washing, and according to real-time data flow obtained through preliminary screening, well washing parameters can be dynamically adjusted, the efficiency is improved, unnecessary well washing times are reduced, and time and cost are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of groundwater sampling, more specifically, to a groundwater well washing system. BACKGROUND

[0002] In the field of hydrogeological exploration, groundwater monitoring and well maintenance, well washing operation is an important link to obtain accurate groundwater quality and water level information. The traditional Bailer pipe well washing uses Bailer pipe artificial extraction method, which can easily disturb the water in the well, resulting in inaccurate measurement data. The volume of the washed well water is estimated according to the number of extracted Bailer pipes (1L / pipe), which has certain error. The well washing requires carrying more instruments, including water level meter and various parameter measuring instruments (temperature, pH, turbidity, oxidation-reduction point, dissolved oxygen). The data after testing are manually recorded on paper by the field test personnel. The whole process is time-consuming and laborious, and there are more human calculation and recording processes on site, which may have certain error rate.

[0003] The prior art such as the one disclosed in CN118225173A discloses a groundwater sampling pre-washing well intelligent judgment method and system, which includes a sensor module, a data acquisition module, a control host, a speed regulation module and a well washing and sampling module. The system controls the water level change and judges the end of well washing according to the amount of extracted water. Special sites need to detect non-aqueous phase liquids (NAPL) and volatile organic compounds (VOCs). Poor well washing can cause water samples to be contaminated or residues to be affected, thereby causing evaluation deviation.

[0004] The current well washing device only has the functions of well washing and sampling, and still needs human operation for well washing volume and parameter measurement, which has certain limitations and errors. Moreover, the current market well washing equipment does not have the function of preliminary screening of groundwater. Therefore, an automatic well washing equipment including preliminary screening, well washing and testing is urgently needed. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a groundwater well washing system to overcome the above-mentioned defects in the prior art.

[0006] The technical scheme for realizing the utility model is: a groundwater well washing system, which comprises a well washing mechanical unit, a water quality measuring unit and a data acquisition and processing unit. The well washing mechanical unit comprises a water pump, a water pumping pipe, a water outlet pipe and a water level sensor. The water level sensor is installed on the water pumping pipe. The water pump, water level sensor and water level sensor are electrically connected to the data acquisition and processing unit. The water quality measuring unit comprises a water quality comprehensive measuring device, a PID photoionization detector and an oil-water interface sensor. The data acquisition and processing unit is used for data acquisition and recording and controls the flow rate of the water pump and the well washing time.

[0007] As a preferred implementation, the data acquisition and processing unit comprises a control panel and a data processing and storage device connected to each other; the water level sensor and the water quality measuring unit are electrically connected to the data processing and storage device; and the control panel is electrically connected to the water pump. The data processing and storage device is used for data acquisition and recording and controls the well flushing operation, controls the start and stop of the water pump through the water level change through the control panel, automatically calculates the well flushing water volume according to the built-in algorithm, alarms to remind to end the well flushing when the water volume is extracted to the required amount, in addition, the data processing and storage device can also determine whether to end the well flushing according to the water quality stability, the data can be supervised and recorded, the source and flow path of the data can be traced, and the well flushing record sheet of the groundwater sampling well can be generated online.

[0008] As a preferred implementation, the water quality comprehensive measuring device, the PID photoionization detector and the oil-water interface sensor are all installed at the end of the water pumping pipe away from the water pump.

[0009] As a preferred implementation, the water quality comprehensive measuring device comprises a pH meter sensor, a dissolved oxygen sensor, a redox point meter sensor, a turbidity meter sensor and a thermometer sensor.

[0010] As a preferred implementation, the model of the PID photoionization detector is PID-5.

[0011] As a preferred implementation, the model of the oil-water interface sensor is DJC-U.

[0012] With the above technical scheme, the utility model has the following beneficial effects:

[0013] (1) The utility model can automatically calculate the well flushing water volume according to the detection of the sensor on the water quality, reduce manual intervention, improve the efficiency of well flushing; determine whether to end the well flushing according to the water quality stability, which ensures the well flushing quality and the accuracy of data; the utility model can use the oil-water interface sensor and the PID photoionization detector and other equipment to perform the water quality preliminary screening before well flushing, dynamically adjusts the well flushing parameter according to the real-time data flow obtained through the preliminary screening, improves the efficiency, reduces unnecessary well flushing times, saves time and cost.

[0014] (2) The water quality sensor of the utility model is installed at the end of the water pumping pipe away from the water pump, so that the measurement is more accurate, the interference of the water pump on the water quality parameter during operation is avoided, and the data accuracy is improved.

[0015] (3) The water quality comprehensive measuring device of the utility model can comprehensively monitor the water quality through the integration of multiple parameters, helps to identify different types of pollution, such as the oxidation-reduction potential indicating the oxidation-reduction state of the groundwater, the pH value affecting the solubility of pollutants, and the comprehensive data being helpful for comprehensive evaluation of the groundwater condition.

[0016] (4) The PID-5 type photoionization detector has high sensitivity and fast response, and can detect volatile organic compounds (VOCs) in time to avoid missed detection.

[0017] (5) The DJC-U type oil-water interface sensor has the characteristics of high precision and non-contact measurement, is suitable for detecting the presence of non-aqueous phase liquids (NAPL), avoids the shortcomings of traditional methods, and improves the accuracy and reliability of detection. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the content of the utility model more easily and clearly understood, the utility model will be further described in detail below according to specific embodiments and in conjunction with the drawings, wherein

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the utility model.

[0021] The reference numerals in the drawings are: 1, well washing mechanical unit; 11, water pump; 12, water pumping pipe; 13, water outlet pipe; 14, water level sensor; 2, water quality measuring unit; 21, water quality comprehensive measuring equipment; 22, PID photoionization detector; 23, oil-water interface sensor; 3, data acquisition and processing unit; 31, control panel; 32, data processing and storage equipment. DETAILED DESCRIPTION

[0022] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings of the specification and specific embodiments.

[0023] 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 described clearly and completely 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 the embodiments. 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.

[0024] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the utility model.

[0025] It should be noted that like numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it should not require further defining and explaining in subsequent views.

[0026] In the description of the embodiments of the present application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In the description of the embodiments of the present application, it should be understood that the terms "setting", "mounting", "connecting", "connecting" should be understood in a broad sense unless otherwise specifically defined and limited, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The present application will be further described below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and cannot be used to limit the protection scope of the present application.

[0028] Embodiment 1, see Figure 1 and Figure 2 A groundwater washing well system, comprising a well washing mechanical unit 1, a water quality measuring unit 2 and a data acquisition and processing unit 3; the well washing mechanical unit 1 comprises a water pump 11, a water pumping pipe 12, a water outlet pipe 13 and a water level sensor 14, the water level sensor 14 is installed on the water pumping pipe 12, the water pump 11, the water level sensor 14 and the water quality measuring unit 2 are all electrically connected with the data acquisition and processing unit 3; the water quality measuring unit 2 comprises a water quality comprehensive measuring device 21, a PID photoionization detector 22 and an oil-water interface sensor 23, the data acquisition and processing unit 3 comprises a control panel 31 and a data processing and storage device 32 connected with each other; the water level sensor 14 and the water level sensor 14 are all electrically connected with the data processing and storage device 32; the control panel 31 is electrically connected with the water pump 11. The water quality comprehensive measuring device 21, the PID photoionization detector 22 and the oil-water interface sensor 23 are all installed on the end of the water pumping pipe 12 away from the water pump 11. The water quality comprehensive measuring device 21 comprises a pH meter sensor, a dissolved oxygen sensor, a redox point meter sensor, a turbidimeter sensor and a thermometer sensor.

[0029] The control panel 31 allows setting well parameters to calculate a single volume of well water; it also allows setting well-washing modes, such as washing n times the volume of well water first and then measuring parameters n times, for example, washing 1 volume of well water and measuring water quality parameters once. The data processing and storage device 32 can store the water level readings from the water level sensor 14, the well PID from the PID photoionization detector 22, and whether an oil-water interface exists. This information is fed back to the control panel 31 to determine the subsequent well-washing and sampling process; it can also store pH value, dissolved oxygen, redox points, turbidity, and temperature; and it can set an output template to export the well-washing data. In this embodiment, the oil-water interface sensor 23 and the PID photoionization detector 22 can be used for preliminary water quality screening before well washing. Based on the real-time data stream obtained from the preliminary screening, the well-washing parameters can be dynamically adjusted, improving efficiency, reducing unnecessary well-washing times, and saving time and costs.

[0030] Preferably, the PID photoionization detector 22 model is PID-5; the oil-water interface sensor model is DJC-U; the pH meter sensor model is PH8022-31; the dissolved oxygen sensor model is 200-BOD; the redox potential meter sensor model is OPR30; and the turbidity meter sensor model is BX-M508.

[0031] Water quality comprehensive measurement equipment can comprehensively monitor water quality by integrating multiple parameters, helping to identify different types of pollution. The PID-5 photoionization detector has high sensitivity and fast response, and can detect volatile organic compounds (VOCs) in a timely manner to avoid missed detection. The DJC-U oil-water interface sensor has the characteristics of high precision and non-contact measurement, which is suitable for detecting the presence of non-aqueous liquids (NAPL), avoiding the shortcomings of traditional methods and improving the accuracy and reliability of detection.

[0032] The specific workflow is as follows:

[0033] First, use the control panel 31 to set the parameters required for this measurement:

[0034] (1) Set the depth of the monitoring well;

[0035] (2) Set the well washing rate;

[0036] (3) Set the measurement mode, for example, set to wash out 1 volume of well water and measure the parameters once;

[0037] (4) Set the measurement parameters (temperature, pH, turbidity, redox potential, dissolved oxygen) as needed;

[0038] (5) Set the export format / template.

[0039] Then the water pump 12 is slowly put into the monitoring well, the water level data is measured by the water level sensor 14, the volatile organic matter reading is measured by the PID photoionization detector 22, and whether there is a non-water phase liquid is measured by the oil-water interface sensor 23, which is transmitted to the data processing and storage device 32 to calculate the single well water volume;

[0040] Then the water pump 11 is started, and the water is pumped out at the set flow rate, and when the set measurement mode is completed, the water quality of the underground water is measured by the water quality measurement unit sensor, and the measured result is transmitted to the data processing and storage device 32.

[0041] Finally, after the well flushing and parameter measurement are completed, all the recorded parameters are recorded to the set template, and the data is exported.

[0042] The above specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the present application, and it should be understood that the above is only a specific embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A subterranean water washing well system characterized by: It includes well washing mechanical unit (1), water quality measuring unit (2) and data acquisition and processing unit (3), the well washing mechanical unit (1) includes water pump (11), water suction pipe (12), water outlet pipe (13) and water level sensor (14), the water level sensor (14) is installed on the water suction pipe (12), the water pump (11), water level sensor (14) and water quality measuring unit (2) are all electrically connected with the data acquisition and processing unit (3), the water quality measuring unit (2) includes water quality comprehensive measuring device (21), PID photoionization detector (22) and oil-water interface sensor (23), the data acquisition and processing unit (3) is used for data acquisition and record and controls the flow rate of the water pump (11) and well washing time.

2. A groundwater well washing system according to claim 1, wherein: The data acquisition and processing unit (3) includes control panel (31) and data processing and storage device (32) connected with each other, the water level sensor (14) and water level sensor (14) are all electrically connected with the data processing and storage device (32), the control panel (31) is electrically connected with the water pump (11).

3. A groundwater well washing system according to claim 1, wherein: The water quality comprehensive measuring device (21), PID photoionization detector (22) and oil-water interface sensor (23) are all installed on the water suction pipe (12) away from the water pump (11) one end.

4. A groundwater washing system according to claim 1, wherein: The water quality comprehensive measuring device (21) includes pH meter sensor, dissolved oxygen sensor, oxidation-reduction point potentiometric sensor, turbidimeter sensor and thermometer sensor.

5. A groundwater washing system according to claim 1, wherein: The model of the PID photoionization detector (22) is PID-5.

6. A groundwater washing system according to claim 1, wherein: The model of the oil-water interface sensor (23) is DJC-U.

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