Layered water quality monitoring device based on municipal construction projects

Abstract

The invention relates to the field of water quality monitoring, and is used to solve the problem that a stratified water quality monitoring device needs manual sampling when in use, and cannot continuously and effectively monitor multi-layer water bodies. The invention specifically relates to a stratified water quality monitoring device based on a municipal construction project. In the invention, water bodies are collected through sampling ports at different heights, and the collected water body samples are automatically tested for water quality through a testing chamber. After one water quality test is completed, the discharge of the water body and the re-collection of water bodies at other depths are automatically controlled by a control system, so as to realize continuous monitoring of water bodies at different depths. When sampling and testing water bodies at different depths, the testing chamber is cleaned to avoid interference of the testing chamber with residual water bodies, thereby ensuring the accuracy of the test. After the water body in the testing chamber is tested, the tested water body is pressurized and discharged through the sampling port, so as to flush out the blocking impurities at the sampling port, thereby avoiding blockage caused by long-term use of the sampling port.

Description

Technical Field

[0001] The invention relates to the field of water quality monitoring, and in particular to a layered water quality monitoring device based on municipal construction projects. Background Art

[0002] Water quality is the abbreviation of water quality. Water quality indicates the physical characteristics of water such as color, turbidity, odor, chemical characteristics such as the content of inorganic and organic matter, and biological characteristics such as the content of bacteria, microorganisms, plankton, benthic organisms. In order to evaluate the status of water quality, a series of water quality parameters and water quality standards are currently stipulated. When conducting water quality monitoring, it is necessary to sample and monitor water bodies at different depths in accordance with the requirements of water quality monitoring standards, so as to meet the requirements of water quality monitoring standards.

[0003] At present, the water quality monitoring technology in the prior art still has shortcomings. Most of the existing layered water quality monitoring devices adopt different lowering depths for sampling. For example, the patent with publication number CN116929855B discloses a sampling device that can set different water inlet parameters during the lowering process through multiple different cavities, thereby achieving one-time sampling and analysis of water bodies at different depths. However, when using this solution, it still relies on structures such as ropes for lowering and sampling, and each sampling requires manual setting and rope lowering. Therefore, the monitoring frequency depends on the manual operation frequency, and it is impossible to continuously monitor and collect water bodies.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] In the present invention, water bodies at different depths are collected by opening sampling ports at multiple different heights on the housing of the monitor, and the collected water samples are automatically tested for water quality through a testing chamber. After one water quality test is completed, the discharge of the water body and the re-collection of water bodies at other depths are automatically controlled by a control system, thereby realizing continuous monitoring of water bodies at different depths, solving the problem that manual sampling is required during use of a stratified water quality monitoring device and that continuous and effective monitoring of multi-layer water bodies cannot be performed continuously and effectively, and a stratified water quality monitoring device based on municipal construction projects is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A layered water quality monitoring device based on a municipal construction project comprises a monitor housing, a plurality of water quality sampling ports are provided at different heights on the monitor housing, a sampling filter cavity is connected to the interior of each group of water quality sampling ports, the sampling filter cavity is fixedly mounted on the inner wall of the monitor housing, and a trash rack is installed inside the sampling filter cavity;

[0008] The inner side of each group of the sampling and filtering chambers is connected with a delivery pipe, and the multiple groups of delivery pipes are independent of each other, and each group of delivery pipes is connected to the detection chamber, which is fixedly installed above the housing of the monitor, and a control terminal is fixedly installed on the top of the detection chamber. The detection chamber can perform water quality detection on the water body inside the detection chamber, and send the water quality data after the detection to the control terminal. A drainage port is opened at the rear of the detection chamber;

[0009] Each set of delivery pipes is connected to the detection chamber through a sub-control valve, which is controlled by a controller inside the control terminal. The sub-control valve is equipped with a liquid pressure pump inside. During detection, the liquid inside the delivery pipe is pumped into the detection chamber. After the detection is completed, the liquid in the detection chamber is pressure-pumped and pumped to the delivery pipe, and is pressurized and discharged through the sampling filter cavity along the delivery pipe.

[0010] As a preferred embodiment of the present invention, a controller and a processor are installed inside the control terminal, and a layered water quality monitoring device control system is stored in the processor. The layered water quality monitoring device control system includes a water quality detection unit, a liquid inlet switching unit, a reverse discharge control unit and a cleaning control unit;

[0011] The water quality detection unit can generate a detection depth signal and send the detection depth signal to the liquid inlet switching unit. The water quality detection unit can detect the water quality inside the detection chamber and generate a water quality detection result;

[0012] The liquid inlet switching unit is used to control the sub-control valve according to the detection depth signal to switch the water body entering the detection chamber;

[0013] The reverse discharge control unit is used to generate a new discharge signal after cleaning is completed, control the discharge of water in the detection chamber through the discharge signal, and collect the drainage resistance value and resistance change value of the conveying pipe during the water discharge process, and generate a blockage dredging signal, a blockage undredging signal and an unblocked signal according to the drainage resistance value and the resistance change value;

[0014] The cleaning control unit is used to control the cleaning of the detection chamber, and after the cleaning is completed, a cleaning completion signal is generated and sent to the water quality detection unit.

[0015] As a preferred embodiment of the present invention, when the liquid inlet switching unit controls the sub-control valve, it controls the corresponding sub-control valve to open according to the depth of the water body to be detected in the detection depth signal, and at the same time controls the other two groups of sub-control valves to close, so that the water body of the corresponding depth enters the sampling filter chamber through the water quality sampling port, and is transported to the detection chamber through the delivery pipe.

[0016] As a preferred embodiment of the present invention, the cleaning control unit cleans the detection chamber after the detection chamber is filled with water of corresponding depth, and the steps of cleaning control are:

[0017] Step 1: The cleaning control unit generates a drainage signal, and controls the drainage port to open through the drainage signal to discharge the water in the detection chamber;

[0018] Step 2: After the water inside the detection chamber is drained, the cleaning control unit closes the drain port and generates a liquid inlet signal again, and sends the liquid inlet signal to the liquid inlet switching unit;

[0019] Step 3: The liquid inlet switching unit controls the sub-control valve to inlet liquid again according to the liquid inlet signal, so that the inside of the detection chamber is filled with water again;

[0020] Step 4: Repeat steps 1 to 3 for multiple times, and generate a cleaning completion signal after the number of repetitions is completed.

[0021] As a preferred embodiment of the present invention, the water quality detection unit detects the water quality after obtaining the cleaning completion signal, generates a water quality detection result, and sends the water quality detection result through the network;

[0022] After the water quality test is completed, the water quality test unit generates a test completion signal and sends it to the reverse discharge control unit. The reverse discharge control unit generates a discharge signal and controls the closing of the discharge port through the discharge signal. At the same time, the water inside the test chamber is pressurized and transported through the delivery pipe and discharged through the sampling filter chamber and the water quality sampling port.

[0023] As a preferred embodiment of the present invention, the method for the reverse discharge control unit to obtain the drainage resistance value and the resistance change value is:

[0024] When the water in the detection chamber is discharged, the reverse discharge control unit detects the water pressure inside the delivery pipe and the water flow velocity in the delivery pipe, and records them as the water pressure P inside the pipe and the flow velocity V inside the pipe respectively. The reverse discharge control unit generates a drainage resistance value Z through formula analysis. , where q is the preset weight coefficient, and the value of q is 0.17. The reverse drainage control unit continuously detects the drainage resistance value during the drainage process, and plots the variation curve of the drainage resistance value Z with time as the horizontal axis. The reverse drainage control unit selects the peak point and the adjacent trough point behind it on the variation curve of the drainage resistance value Z, calculates the vertical axis difference between the selected peak point and the trough point, and records it as the resistance variation value △Z.

[0025] As a preferred embodiment of the present invention, the reverse discharge control unit compares the resistance change value △Z with a preset change threshold value, and generates a blockage clearing signal if the resistance change value △Z is greater than the preset change threshold value;

[0026] If the resistance change value △Z is less than or equal to the preset change threshold, the drainage resistance value Z corresponding to the selected trough point is compared with the preset resistance threshold. If the drainage resistance value Z is less than the preset resistance threshold, an unblocked signal is generated; if the drainage resistance value Z is greater than or equal to the preset resistance threshold, a blocked and unblocked signal is generated.

[0027] The reverse discharge control unit sends the blockage clearing signal, the blockage unclearing signal and the unblocking signal through the control terminal.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] In the present invention, water bodies at different depths are collected by opening sampling ports at multiple different heights on the monitor housing, and the collected water samples are automatically tested for water quality through a testing chamber. After a water quality test is completed, the control system automatically controls the discharge of the water body and the re-collection of water bodies at other depths, thereby realizing continuous monitoring of water bodies at different depths.

[0030] In the present invention, when sampling and testing water bodies at different depths, the testing chamber is cleaned by collecting water bodies at corresponding depths into the testing chamber for multiple times and then discharging the water bodies from the testing chamber. This makes it possible for the testing chamber to detect water bodies at different depths without being disturbed by residual water bodies from the previous detection, thereby ensuring detection accuracy and improving detection effects.

[0031] In the present invention, after the water body in the detection chamber is detected, the detected water body is discharged through the sampling port, and the outlet water pressure at the sampling port is increased by pressurization during discharge, so as to flush the blocking impurities at the sampling port, and ensure the water flow through the water quality sampling port and the sampling filter cavity. At the same time, by analyzing the drainage resistance value and the resistance change value when the water body is discharged, the blockage conditions of the sampling filter cavity and the water quality sampling port and the feedback of the flushing and dredging effect are collected, so as to ensure the normal operation of the layered water quality monitoring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0033] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the liquid discharge port of the present invention;

[0035] Figure 3 It is a cross-sectional structural schematic diagram of the present invention;

[0036] Figure 4 is a system block diagram of the present invention;

[0037] Figure 5 It is a system flow chart of the present invention.

[0038] In the figure: 1. Monitor housing; 2. Water quality sampling port; 21. Sampling filter chamber; 3. Detection chamber; 31. Drain port; 4. Control terminal; 5. Delivery pipe; 6. Sub-control valve. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1

[0041] See also Figure 1 - Figure 5 As shown, a layered water quality monitoring device based on a municipal construction project includes a monitor housing 1, a plurality of water quality sampling ports 2 are provided at different heights on the monitor housing 1, and a sampling filter chamber 21 is connected to the interior of each group of water quality sampling ports 2. The sampling filter chamber 21 is fixedly mounted on the inner wall of the monitor housing 1, and a trash rack is installed inside the sampling filter chamber 21 to block large-volume impurities in the water to avoid clogging the water quality sampling ports 2;

[0042] Each group of sampling filter chambers 21 is connected to a delivery pipe 5, and the multiple groups of delivery pipes 5 are independent of each other, and each group of delivery pipes 5 is connected to the detection chamber 3, the detection chamber 3 is fixedly installed above the monitor housing 1, and a control terminal 4 is fixedly installed on the top of the detection chamber 3. The detection chamber 3 can perform water quality detection on the water body inside the detection chamber 3, and send the water quality data after the detection to the control terminal 4. A drain port 31 is opened at the rear of the detection chamber 3 for discharging the cleaning liquid;

[0043] Each group of delivery pipes 5 is connected to the detection chamber 3 through a sub-control valve 6. The sub-control valve 6 is controlled by a controller inside the control terminal 4. The sub-control valve 6 has a liquid pressure pump inside. During detection, the liquid inside the delivery pipe 5 is pumped into the detection chamber 3. After the detection is completed, the liquid in the detection chamber 3 is pressure-pumped into the delivery pipe 5, and is pressurized and discharged through the sampling filter chamber 21 along the delivery pipe 5, so as to flush the large-volume impurities intercepted on the sampling filter chamber 21 and clean the large-volume impurities on the sampling filter chamber 21.

[0044] Example 2

[0045] See also Figure 1 - Figure 5As shown, a controller and a processor are installed inside the control terminal 4, and a layered water quality monitoring device control system is stored in the processor. The layered water quality monitoring device control system includes a water quality detection unit, a liquid inlet switching unit, a backflow control unit and a cleaning control unit, wherein the water quality detection unit can generate a detection depth signal, and the detection depth signal includes the depth of the water body to be detected. The water quality detection unit generates the detection depth signal by manual input or automatic generation according to a preset sequence. The water quality detection unit sends the detection depth signal to the liquid inlet switching unit, and the liquid inlet switching unit controls one group of control valves 6 to open according to the detection depth signal, and controls the other two groups of control valves 6 to close, so that the water body of the corresponding depth enters the sampling filter chamber 21 through the water quality sampling port 2, and is transported to the detection chamber 3 through the delivery pipe 5. The cleaning control unit cleans the detection chamber 3 after the detection chamber 3 is filled with water of the corresponding depth. The cleaning control unit is used to clean the detection chamber 3 of the water quality detection device, and the steps of cleaning control are:

[0046] Step 1: The cleaning control unit generates a drainage signal, and controls the drainage port 31 to open through the drainage signal to discharge the water in the detection chamber 3;

[0047] Step 2: After the water inside the detection chamber 3 is drained, the cleaning control unit closes the drain port 31 and generates a liquid inlet signal again, and sends the liquid inlet signal to the liquid inlet switching unit;

[0048] Step 3: The liquid inlet switching unit controls the sub-control valve 6 to inlet liquid again according to the liquid inlet signal, so that the inside of the detection chamber 3 is filled with water again;

[0049] Step 4: Repeat steps 1 to 3 for multiple times, and generate a cleaning completion signal after the number of repetitions is completed.

[0050] The cleaning control unit sends a cleaning completion signal to the water quality detection unit. After obtaining the cleaning completion signal, the water quality detection unit detects the water quality, generates a water quality detection result, and sends the water quality detection result through the network;

[0051] After the water quality detection is completed, the water quality detection unit generates a detection completion signal and sends it to the reverse discharge control unit. The reverse discharge control unit generates a drainage signal and controls the drainage port 31 to be closed through the drainage signal. At the same time, the water inside the detection chamber 3 is pressurized and transported through the delivery pipe 5 and discharged through the sampling filter chamber 21 and the water quality sampling port 2;

[0052] When the reverse discharge control unit discharges the water in the detection chamber 3, the sensor detects the water pressure inside the delivery pipe 5 and records it as the water pressure P in the pipe. The sensor detects the water flow velocity in the delivery pipe 5 and records it as the flow velocity V in the pipe. The reverse discharge control unit generates the drainage resistance value Z through formula analysis. , where q is a preset weight coefficient, and the value of q is 0.17. The reverse drainage control unit continuously detects the drainage resistance value during the drainage process, and draws a variation curve of the drainage resistance value Z with time as the horizontal axis. The reverse drainage control unit selects a peak point and a trough point located behind it on the variation curve of the drainage resistance value Z, calculates the vertical axis difference between the selected peak point and the trough point, and records it as the resistance variation value △Z;

[0053] The reverse discharge control unit compares the resistance change value △Z with the preset change threshold value, and generates a blockage clearing signal if the resistance change value △Z is greater than the preset change threshold value;

[0054] If the resistance change value △Z is less than or equal to the preset change threshold, the drainage resistance value Z corresponding to the selected trough point is compared with the preset resistance threshold. If the drainage resistance value Z is less than the preset resistance threshold, an unblocked signal is generated; if the drainage resistance value Z is greater than or equal to the preset resistance threshold, a blocked and unblocked signal is generated.

[0055] The reverse discharge control unit sends the blockage clearing signal, the blockage unclearing signal and the unblocking signal through the control terminal 4. When sending the blockage unclearing signal, an early warning reminder is sent at the same time to remind the management personnel to check the sampling filter chamber 21.

[0056] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A layered water quality monitoring device based on municipal construction projects, characterized in that: The monitor comprises a housing (1), wherein a plurality of water quality sampling ports (2) are provided at different heights on the housing (1), wherein each group of water quality sampling ports (2) is connected to a sampling filter chamber (21), wherein the sampling filter chamber (21) is fixedly mounted on the inner wall of the housing (1), and a trash rack is installed inside the sampling filter chamber (21); Each group of the sampling filter chambers (21) is connected to a delivery pipe (5) on the inside, the multiple groups of delivery pipes (5) are independent of each other, and each group of delivery pipes (5) is connected to a detection chamber (3), the detection chamber (3) is fixedly installed above the monitor housing (1), a control terminal (4) is fixedly installed on the top of the detection chamber (3), the detection chamber (3) can perform water quality detection on the water body located inside the detection chamber (3), and send the detected water quality data to the control terminal (4), and a liquid discharge port (31) is opened at the rear of the detection chamber (3); Each group of delivery pipes (5) is connected to the detection chamber (3) via a sub-control valve (6). The sub-control valve (6) is controlled by a controller inside the control terminal (4). The sub-control valve (6) has a liquid pressure pump inside. During detection, the liquid inside the delivery pipe (5) is pumped into the detection chamber (3). After the detection is completed, the liquid in the detection chamber (3) is pressure-pumped and pumped into the delivery pipe (5), and is discharged under pressure along the delivery pipe (5) through the sampling filter chamber (21); The control terminal (4) is internally installed with a controller and a processor, and the processor stores a control system for a layered water quality monitoring device, and the control system for the layered water quality monitoring device includes a water quality detection unit, a liquid inlet switching unit, a reverse discharge control unit, and a cleaning control unit; The water quality detection unit is capable of generating a detection depth signal and sending the detection depth signal to the liquid inlet switching unit, and the water quality detection unit is capable of detecting the water quality inside the detection chamber (3) and generating a water quality detection result; The liquid inlet switching unit is used to control the sub-control valve (6) according to the detection depth signal, and switch the water body entering the detection chamber (3); The reverse discharge control unit is used to generate a discharge signal after cleaning is completed, control the discharge of water in the detection chamber (3) through the discharge signal, collect the drainage resistance value and resistance change value of the delivery pipe (5) during the water discharge process, and generate a blockage clearing signal, a blockage unclearing signal and an unblocked signal according to the drainage resistance value and the resistance change value; The cleaning control unit is used to control the cleaning of the detection chamber (3), and after the cleaning is completed, generates a cleaning completion signal and sends it to the water quality detection unit; When the liquid inlet switching unit controls the sub-control valve (6), the corresponding sub-control valve (6) is controlled to open according to the depth of the water body to be detected in the detection depth signal, and the other two groups of sub-control valves (6) are controlled to close, so that the water body at the depth to be detected enters the sampling filter chamber (21) through the water quality sampling port (2) and is transported to the detection chamber (3) through the transport pipe (5).

2. The hierarchical water quality monitoring device based on municipal construction engineering according to claim 1 is characterized in that: The cleaning control unit cleans the detection chamber (3) after the detection chamber (3) is filled with water of a depth to be detected, and the cleaning control steps are as follows: Step 1: the cleaning control unit generates a drainage signal, and controls the drainage port (31) to open through the drainage signal, thereby discharging the water in the detection chamber (3); Step 2: After the water inside the detection chamber (3) is drained, the cleaning control unit closes the drain port (31) and generates a liquid inlet signal again, and sends the liquid inlet signal to the liquid inlet switching unit; Step 3: the liquid inlet switching unit controls the sub-control valve (6) to inlet liquid again according to the liquid inlet signal, so that the interior of the detection chamber (3) is filled with water of the depth required for detection again; Step 4: Repeat steps 1 to 3 for multiple times, and generate a cleaning completion signal after the number of repetitions is completed.

3. The hierarchical water quality monitoring device based on municipal construction engineering according to claim 1 is characterized in that: The water quality detection unit detects the water quality after obtaining the cleaning completion signal, generates a water quality detection result, and sends the water quality detection result through the network; After the water quality test is completed, the water quality test unit generates a test completion signal and sends it to the reverse discharge control unit. The reverse discharge control unit generates a liquid discharge signal and controls the liquid discharge port (31) to close by means of the liquid discharge signal. At the same time, the water inside the test chamber (3) is pressurized and transported through the delivery pipe (5) and discharged through the sampling filter chamber (21) and the water quality sampling port (2).

4. The hierarchical water quality monitoring device based on municipal construction engineering according to claim 1 is characterized in that: The method for the reverse discharge control unit to obtain the drainage resistance value and the resistance change value is: When the water in the detection chamber (3) is discharged, the reverse discharge control unit detects the water pressure inside the delivery pipe (5) and the water flow velocity in the delivery pipe (5), and records them as the water pressure P in the pipe and the flow velocity V in the pipe, respectively. The reverse discharge control unit generates a drainage resistance value Z through formula analysis. , where q is the preset weight coefficient, and the value of q is 0.

17. The reverse drainage control unit continuously detects the drainage resistance value during the drainage process, and plots the variation curve of the drainage resistance value Z with time as the horizontal axis. The reverse drainage control unit selects the peak point and the adjacent trough point behind it on the variation curve of the drainage resistance value Z, calculates the vertical axis difference between the selected peak point and the trough point, and records it as the resistance variation value △Z.

5. The hierarchical water quality monitoring device based on municipal construction engineering according to claim 1 is characterized in that: The reverse discharge control unit compares the resistance change value △Z with a preset change threshold value, and generates a blockage clearing signal if the resistance change value △Z is greater than the preset change threshold value; If the resistance change value △Z is less than or equal to the preset change threshold, the drainage resistance value Z corresponding to the selected trough point is compared with the preset resistance threshold. If the drainage resistance value Z is less than the preset resistance threshold, an unblocked signal is generated; if the drainage resistance value Z is greater than or equal to the preset resistance threshold, a blocked and unblocked signal is generated. The reverse discharge control unit sends a blockage clearing signal, a blockage unclearing signal and an unblocking signal through a control terminal (4).

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