A groundwater sampling flow control system

Abstract

The application discloses a groundwater sampling flow control system, which comprises an ultrasonic flow detection module, a flow control module, a data processing and storage module, a display module and a portable integrated box. The measurement range of the ultrasonic flow detection module is 0-20 L / min, and the precision control is ±0.1%. The flow rate and flow are calculated by detecting the time difference of the forward and reverse flow propagation of sound in the groundwater fluid. The flow control module cooperates with a sampling pump to realize accurate flow regulation and control. The data processing and storage module can calculate the cumulative flow, store historical data and support USB export. The display module realizes the digital real-time display of the flow rate, cumulative flow, battery capacity and other information. The system realizes accurate control and measurement of the groundwater sampling flow, avoids sample pollution, is portable and easy to operate, can record the well washing state, and meets the national standard requirements for VOC water sample collection.

Description

Technical Field

[0001] This invention relates to the field of groundwater sampling technology, and in particular to a groundwater sampling flow control system. Background Technology

[0002] In the field of groundwater sampling technology, especially in VOC water sampling operations, relevant national standards clearly require that the sampling flow rate be controlled below 100 mL / min, and there are strict requirements for the accurate measurement and control of the flow rate.

[0003] The flow measurement and control in existing groundwater sampling devices are mostly crude designs, and float flow meters are commonly used for flow detection. These flow meters have poor measurement accuracy, making it difficult to achieve precise control of the sampling flow and failing to meet the national standards for VOC water sample collection. At the same time, float flow meters require manual reading of the scale to read the flow value, which cannot achieve real-time digital display of flow data and results in low operating efficiency. In addition, traditional flow meters lack the functions of cumulative flow recording and historical data storage, making it impossible to accurately record the well washing volume and well washing status before sampling, and making it difficult to grasp the actual situation of well washing operations; moreover, some flow meters have a contact structure, and groundwater samples are prone to come into contact with the flow meter pipeline, posing a risk of sample contamination.

[0004] Therefore, in order to solve the technical problems of low accuracy of existing groundwater sampling flow control, inability to display and record flow data in real time, and easy sample contamination, a groundwater sampling flow control system is provided to achieve accurate measurement and regulation of sampling flow, meet VOC water sample collection standards, and realize digital display, storage and export of flow data to avoid sample contamination. The portability and ease of operation of the equipment are also technical problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a groundwater sampling flow control system.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A groundwater sampling flow control system includes a portable integrated housing and, housed within the housing, an ultrasonic flow detection module, a flow control module, a data processing and storage module, a display module, a power supply module, and an operation module; wherein... The ultrasonic flow detection module is used to detect the real-time flow velocity during the groundwater sampling process. It calculates the flow velocity and converts it into real-time flow rate by measuring the time difference of sound propagation in the groundwater fluid with and against the current. The flow control module is electrically connected to an external sampling pump and an ultrasonic flow detection module. It adjusts the working state of the sampling pump based on the detection data from the ultrasonic flow detection module to achieve precise control of the sampling flow. The data processing and storage module is electrically connected to the ultrasonic flow detection module, receives real-time flow data and automatically calculates cumulative flow, and stores historical data of real-time flow and cumulative flow, and supports exporting historical data via USB interface; The display module is electrically connected to the data processing and storage module and the power supply module, and digitally displays the real-time flow rate, cumulative flow, and remaining power of the power supply module in real time. The power supply module provides 24V power to each module and is equipped with a charging port; The operation module includes a system switch, which is used to control the start and stop of the entire system.

[0007] Preferably, the ultrasonic flow detection module has a measurement range of 0-20 L / min and a measurement accuracy controlled within ±0.1%.

[0008] Preferably, the ultrasonic flow detection module is a non-contact detection structure to avoid direct contact between the groundwater sample and the flow meter pipeline.

[0009] Preferably, the portable integrated housing integrates a charging port, a USB data export interface, and a system switch, making the housing easy to carry, install, and operate on-site.

[0010] Preferably, the system can record the cumulative flow data in real time to reflect the well washing volume and well washing status before groundwater sampling.

[0011] Preferably, the flow control module can precisely regulate the sampling flow rate to below 100 mL / min, meeting the relevant national standards for VOC water sample collection.

[0012] The present invention achieves the following technical effects compared to the prior art: (1) The present invention uses an ultrasonic flow detection module, the measurement accuracy is controlled within ±0.1%, the measurement range is 0-20L / min, and with the flow control module, the sampling flow rate can be precisely adjusted to below 100mL / min, which perfectly solves the problem of low flow control accuracy in the prior art and meets the flow requirements for VOC water sample collection in the relevant national standards; (2) The present invention is equipped with a display module, which realizes the digital real-time display of real-time flow rate, cumulative flow and battery power, replacing the manual scale reading method of traditional float flowmeter, making operation more convenient and data reading more accurate and efficient; (3) The ultrasonic flow detection module of the present invention has a non-contact structure, which avoids direct contact between the groundwater sample and the flow meter pipeline, fundamentally reducing the risk of sample contamination and ensuring the purity of the sample. (4) The present invention realizes the automatic calculation of cumulative flow and storage of historical data through the data processing and storage module. It also supports data export via USB interface. Operators can accurately grasp the well washing volume and well washing status based on the cumulative flow data, providing reliable data support for sampling operations. At the same time, the storage and export of historical data facilitates subsequent data traceability and analysis. (5) The present invention integrates each functional module into a portable integrated box. The box has a compact structure, is easy to carry on site, and integrates a charging port, a data export interface, and a system switch. On-site connection and operation are simple and quick, which greatly improves the efficiency of outdoor groundwater sampling operations. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the external structure of the groundwater sampling flow control system of the present invention; Appendix Figure 2 This is a schematic diagram of the back interface layout of the groundwater sampling flow control system of the present invention; Appendix Figure 3 This is a block diagram showing the module connection of the groundwater sampling flow control system of the present invention.

[0014] The components include: 1. Portable integrated housing; 2. Display module; 3. System switch; 4. Charging port; 5. USB data export interface; 6. Ultrasonic flow detection module; 7. Flow control module; 8. Data processing and storage module; and 9. Power supply module. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] This invention discloses a groundwater sampling flow control system, which includes a portable integrated housing and an ultrasonic flow detection module, a flow control module, a data processing and storage module, a display module, a power supply module, and an operation module housed within the housing; wherein, The ultrasonic flow detection module is used to detect the real-time flow velocity during the groundwater sampling process. It calculates the flow velocity and converts it into real-time flow rate by measuring the time difference of sound propagation in the groundwater fluid with and against the current. The flow control module is electrically connected to the external sampling pump and the ultrasonic flow detection module. It adjusts the working status of the sampling pump based on the detection data of the ultrasonic flow detection module to achieve precise control of the sampling flow. The data processing and storage module is electrically connected to the ultrasonic flow detection module. It receives real-time flow data and automatically calculates cumulative flow. At the same time, it stores historical data of real-time flow and cumulative flow, and supports exporting historical data via USB interface. The display module is electrically connected to the data processing and storage module and the power supply module, and digitally displays the real-time flow rate, cumulative flow, and remaining power of the power supply module in real time. The power supply module provides 24V power to each module and is equipped with a charging port; The operation module includes a system switch, which is used to control the start and stop of the entire system.

[0017] The ultrasonic flow detection module has a measurement range of 0 - 20 L / min and a measurement accuracy controlled within ±0.1%.

[0018] The ultrasonic flow detection module has a non-contact detection structure, which avoids direct contact between groundwater samples and flow meter pipelines.

[0019] The portable integrated housing includes a charging port, a USB data export interface, and a system switch, making it easy to carry, install, and operate on-site.

[0020] The system can record cumulative flow data in real time, which can be used to reflect the well washing volume and well washing status before groundwater sampling.

[0021] The flow control module can precisely regulate the sampling flow rate to below 100 mL / min, meeting the relevant national standards for VOC water sample collection.

[0022] The groundwater sampling flow control system of this embodiment, model TIWI-26003, includes a portable integrated box and ultrasonic flow detection module, flow control module, data processing and storage module, display module, power supply module and operation module installed in the box. The portable integrated box integrates a charging port, USB data export interface and system switch. The box is portable and easy to carry and operate on site.

[0023] The power supply module is powered by a 24V battery, providing stable power to all functional modules. The charging port allows the battery to be charged for extended operation, and the display module can display the remaining battery power in real time, allowing operators to keep track of the equipment's power supply status.

[0024] During operation, turn on the system switch to start the entire control system, connect the ultrasonic flow detection module to the groundwater sampling pipeline, and start the external sampling pump to begin groundwater sampling or well flushing operations. The ultrasonic flow detection module calculates the real-time flow velocity of the fluid by measuring the time difference between the propagation of sound in the downstream and upstream directions in the groundwater fluid, and then converts it into real-time flow rate. The module has a measurement range of 0-20L / min, an accuracy of ±0.1%, and is a non-contact detection method that does not directly contact the groundwater sample.

[0025] The ultrasonic flow detection module transmits real-time flow data to the flow control module and the data processing and storage module. Based on the real-time flow data, the flow control module automatically adjusts the operating parameters of the external sampling pump to precisely control the sampling flow rate below 100 mL / min, meeting the national standards for VOC water sample collection. After receiving the real-time flow data, the data processing and storage module automatically calculates the cumulative flow rate and continuously stores historical data such as real-time flow rate, real-time flow rate, and cumulative flow rate.

[0026] The display module receives real-time flow rate and cumulative flow data from the data processing and storage module, as well as remaining power data from the power supply module, and displays them digitally. Operators can read the data intuitively and accurately, and determine the well washing volume and status based on the cumulative flow data. Once the well washing status meets the sampling requirements, formal groundwater sampling operations can be carried out.

[0027] After the sampling is completed, the USB data export interface of the data processing and storage module can be connected to an external terminal device via a USB cable to export the stored historical data, which is convenient for subsequent data analysis, organization and archiving.

[0028] The control system in this embodiment has a compact structure, is highly portable, and has a simple on-site installation, connection, and operation process, which can effectively improve the efficiency of groundwater sampling operations. At the same time, it realizes accurate measurement and control of flow rate, avoids sample contamination, and can accurately record well washing status. It solves many technical problems of existing groundwater sampling flow control and is suitable for various groundwater sampling operations, especially VOC water sample collection operations with high flow rate accuracy requirements.

[0029] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A groundwater sampling flow control system, characterized in that, The system includes a portable integrated housing and, housed within the housing, an ultrasonic flow detection module, a flow control module, a data processing and storage module, a display module, a power supply module, and an operation module; wherein... The ultrasonic flow detection module is used to detect the real-time flow velocity during the groundwater sampling process. It calculates the flow velocity and converts it into real-time flow rate by measuring the time difference of sound propagation in the groundwater fluid with and against the current. The flow control module is electrically connected to an external sampling pump and an ultrasonic flow detection module. It adjusts the working state of the sampling pump based on the detection data from the ultrasonic flow detection module to achieve precise control of the sampling flow. The data processing and storage module is electrically connected to the ultrasonic flow detection module, receives real-time flow data and automatically calculates cumulative flow, and stores historical data of real-time flow and cumulative flow, and supports exporting historical data via USB interface; The display module is electrically connected to the data processing and storage module and the power supply module, and digitally displays the real-time flow rate, cumulative flow, and remaining power of the power supply module in real time. The power supply module provides 24V power to each module and is equipped with a charging port; The operation module includes a system switch, which is used to control the start and stop of the entire system.

2. The groundwater sampling flow control system according to claim 1, characterized in that, The ultrasonic flow detection module has a measurement range of 0 - 20 L / min and a measurement accuracy controlled within ±0.1%.

3. The groundwater sampling flow control system according to claim 1, characterized in that, The ultrasonic flow detection module is a non-contact detection structure, which avoids direct contact between the groundwater sample and the flow meter pipeline.

4. A groundwater sampling flow control system according to claim 1, characterized in that, The portable integrated housing integrates a charging port, a USB data export interface, and a system switch, making the housing easy to carry, install, and operate on-site.

5. A groundwater sampling flow control system according to claim 1, characterized in that, The system can record cumulative flow data in real time, which can be used to reflect the well washing volume and well washing status before groundwater sampling.

6. A groundwater sampling flow control system according to claim 1, characterized in that, The flow control module can precisely regulate the sampling flow rate to below 100 mL / min, meeting the relevant national standards for VOC water sample collection.

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