CN206847998U - A kind of rainfall runoff intellegent sampling device - Google Patents

Abstract

An intelligent sampling device for rainwater runoff, including a sensor system, a pumping and drainage system, a water collection system, a power supply system, a remote control system and an intelligent control system; the sensor system includes a water level sensor, a flow sensor and a sensor control module; the pumping and drainage system includes water pipes, Water pump system, water pump control module and solenoid valve control module; the water inlet pipe of the water pump system is connected to the rainwater collection tank, the water outlet pipe is connected to the sampling bottle in the water collection system, and the main pipe valve, the main pipe valve and the solenoid valve are set on the water inlet pipe or the water outlet pipe The control module is connected; the remote control system includes a mobile terminal device and a mobile terminal signal receiving antenna; the mobile terminal signal receiving antenna is connected to the mode control module; it is composed of a sensor control module, a mode control module, a solenoid valve control module, a water pump control module and an operation panel. Control System. The device has water level/flow sensing mode, command mode and remote control mode, which can realize the automatic collection of water samples in the process of rainfall and runoff with drastic flow changes.

Description

A rainwater runoff intelligent sampling device

technical field

The utility model relates to an intelligent sampling device for rainwater runoff, which belongs to the field of water conservancy engineering.

Background technique

Rainwater runoff sampling refers to the regular or irregular sampling of the runoff produced in the precipitation process, which can be used to study and analyze the change process of the runoff water quality produced in the rainfall. In order to monitor the water quality changes in the rainfall runoff process of different underlying surfaces such as roofs, roads, courtyards, and green spaces, it is necessary to collect a water sample for the entire process of rainfall runoff generation for water quality analysis, especially the initial water that has just started to produce runoff. Sample. At present, domestic rainwater runoff sampling devices are mainly divided into two types. One is a manual control sampler, which first collects the runoff generated by rainfall on a certain area of catchment area into a rain collection trough (or rain collection box). At the outlet of the rain gutter (or rain collection box), the sampler is used to carry out manual sampling based on fixed or non-fixed time intervals; the other is an automatic control timing sampler, which uses an automatic control device to set the sampling time, Interval, times and other parameters, the sampler is driven by the program to carry out regular sampling. The first type is a manual control sampler, which takes a lot of time and energy during the sampling process; the second type is an automatic water quality sampler, which has the advantages of saving labor and being easy to control. The automatic water quality samplers currently on the market are basically samplers that can be set at equal or variable time intervals, and are suitable for water quality sampling in pipelines or rivers with constant water flow.

However, in the research of urban hydrology, rainwater utilization, sponge city construction and other fields, it is necessary to monitor the water quality change process of the rainfall runoff process of the smaller underlying surface, or the water quality change process of the rainwater pipeline, which has the following characteristics:

(1) The start time and end time of rainfall runoff are random.

(2) In general, the runoff flow produced by rainfall is small and the variation is large, so the requirements for sampling frequency and sampling response time are relatively high.

At present, the water quality samplers on the market are only suitable for collecting water samples from pipes or rivers with constant flow of water. For the runoff of rainwater pipes, it is impossible to collect the water samples of the initial runoff of the runoff, nor can it distinguish different rainfall events for separate sampling, which is easy to miss. The best sampling time. Therefore, it is necessary to develop an automatic water sample collection device that can adapt to the characteristics of rainwater runoff in rainwater pipes, and provide important equipment and condition support for promoting research in the fields of urban hydrology, rainwater utilization, and sponge city construction in my country.

Utility model content

Aiming at the above-mentioned problems in the prior art, the utility model provides an intelligent sampling device for rainwater runoff.

In order to achieve the above object, the utility model includes the following technical solutions:

An intelligent sampling device for rainwater runoff, including a sensor system, a pumping and drainage system, a water collection system, a power supply system, a remote control system and an intelligent control system;

The sensor system includes a water level sensor 1, a flow sensor 2 and a sensor control module 8; the water level sensor 1 and the flow sensor 2 are placed in the rainwater collection tank 4 of the sampling terminal;

The pumping system includes a water pipe 5, a water pump system 16, a water pump control module 14 and a solenoid valve control module 12; the water pump system 16 is connected to the water pump control module 14 through a data line; the water inlet pipe of the water pump system 16 is connected to the rainwater collection tank 4, and the water outlet pipe is connected to The sampling bottle 18 in the water collection system is provided with a dry pipe valve 17 on the water inlet pipe or the water outlet pipe, and the dry pipe valve 17 is connected with the solenoid valve control module 12;

The remote control system includes a mobile terminal device 9 and a mobile terminal signal receiving antenna 7; the mobile terminal signal receiving antenna 7 is connected to the mode control module 13 through a data line;

An intelligent control system is composed of a sensor control module 8, a mode control module 13, a solenoid valve control module 12, a water pump control module 14 and an operation panel 11;

The power supply system is connected with other system circuits.

For the rainwater runoff intelligent sampling device described above, preferably, the water collection system includes a main pipe valve 17, a branch pipe valve 19 and a plurality of sampling bottles.

For the rainwater runoff intelligent sampling device described above, preferably, the power supply system 15 has three power supply modes: external AC220V, built-in rechargeable lithium battery and solar panel.

For the rainwater runoff intelligent sampling device described above, preferably, the intelligent control system is equipped with a data storage device.

The utility model has the following characteristics:

The sampling device can automatically identify the start time and end time of rainfall runoff, and collect water samples at the beginning and the whole process of runoff; the sampling device has three working modes, namely, water level (or flow) sensing mode, command mode and mobile The terminal remote control mode can meet the needs of different frequencies and different sampling volumes under different rainfall scenarios; the power supply system of the device has three power supply modes: external AC220V, built-in rechargeable lithium battery and solar panel; the intelligent control system of the device Equipped with a data storage device, it can automatically record the log information during the sampling process, which is convenient for export and analysis.

The beneficial effects of the utility model are: the above-mentioned design enables the device to realize three working modes:

(1) Water level (or flow) sensing mode, that is, by measuring the water level (or flow) parameters of the sampling terminal in real time to judge whether it exceeds the critical threshold index. If it exceeds, start the sampling program, and the interval time and sampling time adopt built-in parameters;

(2) Command mode, that is, manually set parameters such as start time, sampling interval, and sampling times;

(3) The mobile terminal remote control mode, that is, the sampler sends parameters such as start time, sampling interval, and sampling times to the control system through mobile phone text messages in different places to control the sampling process.

By using three working modes, the device can not only meet the rainfall runoff process with relatively stable flow and water quality, but also meet the rainfall runoff process with drastic changes in flow and water quality. Sampling time, time interval, sampling times and other parameters can be set manually through the field or remote terminal, and can be triggered based on the water level (or flow) sensor, and automatic sampling can be performed according to the default parameters. Compared with the conventional automatic rainfall runoff sampling device, the sampling device can more accurately know the change process of the runoff water quality generated by the rainfall, which is of great significance for improving the level of research equipment in the fields of urban hydrology, rainwater utilization, and water environment in my country.

Description of drawings

Fig. 1 is a structural diagram of a longitudinal section of a preferred rainwater runoff intelligent sampling device of the present invention.

Fig. 2 is a top view of a water collection system of a preferred rainwater runoff intelligent sampling device of the present invention.

detailed description

Example 1

As shown in Figures 1 to 2, in a preferred embodiment of the present invention, the rainwater runoff intelligent sampling device includes a sensor system, a pumping and drainage system, a water collection system, a power supply system, a remote control system and an intelligent control system.

The sensor system includes a water level sensor 1, a flow sensor 2 and a sensor control module 8; the water level sensor 1 and the flow sensor 2 are placed in the rainwater collection tank 4 of the sampling terminal.

The sensor system is used to measure the water level and flow information in the sampling terminal in real time, and provides boundary judgment conditions for system startup and shutdown. The sampling terminal is used to collect the runoff on the underlying surface of the runoff, which can capture the start time of the runoff and the first water volume of the runoff.

As shown in FIG. 2 , the water collection system includes a main pipe valve 17 , a branch pipe valve 19 and a plurality of sampling bottles 18 . The function of the catchment system is to collect samples of stormwater runoff.

The pumping system includes a water pipe 5, a water pump system 16, a water pump control module 14 and a solenoid valve control module 12; the water pump system 16 is connected to the water pump control module 14 through a data line; the water inlet pipe of the water pump system 16 is connected to the rainwater collection tank 4, and the water outlet pipe is connected to The sampling bottle 18 in the water collection system is provided with a main pipe valve 17 on the water inlet pipe or the water outlet pipe, and the main pipe valve 17 is connected with the solenoid valve control module 12 .

The function of the drainage system: when sampling, the rainwater sample is transferred from the sampling terminal to the sampling bottle. At the same time, when the sampling of each sampling bottle is finished, the tail water in the sampling system is emptied to prevent interference to the next sampling process. The water pump of the device adopts a miniature water pump, and the water outlet flow rate is 6-12L/min.

The remote control system includes a mobile terminal device 9 and a mobile terminal signal receiving antenna 7; the mobile terminal signal receiving antenna 7 is connected to the mode control module 13 through a data line.

The intelligent control system is composed of a sensor control module 8, a mode control module 13, a solenoid valve control module 12, a water pump control module 14, an operation panel 11 and a data storage device.

The intelligent control system controls the sampling time, interval time, sampling times, etc. according to the set program. The system can receive the signal from the remote mobile terminal to adjust the working state of the system. The system can judge whether there is enough water to sample according to the liquid level or flow signal and combined with time information. If the water volume is not enough, it will wait until the water volume is enough to sample again, and set the start sampling time of each water sample (accurate to seconds) , The end time is recorded and stored in the data storage device for later reading and analysis. The system can also judge whether the rainfall runoff is over, the interval between the end time of the previous rainfall and the start time of the next rainfall according to the liquid level or flow signal, and determine in turn whether to sample according to the runoff process of the same rainfall.

The power supply system 15 has three power supply modes: external AC220V, built-in rechargeable lithium battery and solar panel. The power supply system is connected with other system circuits. The power supply system provides power support for the sensor system, the water pump system, and the solenoid valve of the sampler. The user can flexibly choose the power supply mode according to the use environment, and the instrument is also equipped with a power display value to ensure the smooth progress of the sampling work.

When the rainwater runoff intelligent sampling device is applied, it is first necessary to set its working mode. In different modes, the sampling process is also different.

Workflow in water level (or flow) sensing mode: the water level (or flow) probe measures the water level (or flow) parameters in the sampling terminal in real time, once a rainfall event occurs, and the water level (or flow) in the sampling terminal exceeds the threshold After the index is reached, the control system will start the extraction system set for sampling. The specific steps of the equipment are as follows:

Step 1: Remove air from the water collection system. The main valve and branch pipe valves are opened; the other branch pipe valves are closed, and the water pump is started for 5-10 seconds to fill the pipe space in the water collection system with rainwater samples.

Step 2: Fill the rainwater sample into the sampling bottle. The water pump continues to run for 5 to 10 seconds, fill No. 1 sampling bottle with 1 to 1.5 L of rainwater samples, and the water pump stops.

Step 3: Empty the rainwater samples from the collection system. Under the action of the control system, the water pump is reversed, and the rainwater sample from the water collection system is discharged into the sampling terminal for 5 to 10 seconds to avoid the mixing effect of the rainwater sample in the pipeline and the sample in the second sampling process, and the No. 1 sampling bottle is completed. sampling process.

According to the default setting or preset program, the system will carry out the second sampling process after a certain period of time. Since the water level (or flow) sensor interval is 1min, the water level value (or flow value) of the sampling terminal will be detected in real time. If the water level (or flow rate) has been in the state of exceeding the threshold index, then this sampling process will continue to repeat steps 1 to 3 until the sampling bottles No. 2 to No. 12 are completely filled. The duration of the entire sampling process is set according to the program; if the water level value (or flow value) in the sampling terminal is lower than the threshold index after the rain stops, the sampling process will be automatically terminated, and the control system will close the main valve.

Workflow in command mode: In this mode, the sampler is on site and sets the start time, sampling time, interval time and other parameters of the control system through manual operation of the control keys. The system works as shown in steps 1-3. During the sampling process, the sensor module senses the water level (or flow) parameters in the sampling terminal in real time. If the measured value is lower than the threshold index, the sampling process will be automatically terminated.

Workflow under the remote control mode of the mobile terminal: this mode is that the sampler is not on site, but when the sampling area has a rainfall runoff event, the start time, sampling time, interval time and other parameters are sent to the control system by SMS, and the control system passes The mobile signal receiving module receives the text message, and the mode control module interprets the information as a control command to control the water pump, solenoid valve and other systems to complete the sampling process. During the sampling process, the sensor module will sense the water level (or flow) parameters in the sampling terminal in real time. If the measured value is lower than the threshold index, the sampling will be automatically terminated.

The above embodiments are only used to illustrate the present utility model, but not to limit the present utility model. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the present utility model. , so all equivalent technical solutions also belong to the category of the utility model, and the patent protection scope of the utility model should be defined by the claims.

Claims (4)

1. A rainwater runoff intelligent sampling device is characterized in that it comprises a sensor system, a pumping system, a water collection system, a power supply system, a remote control system and an intelligent control system; The sensor system includes a water level sensor (1), a flow sensor (2) and a sensor control module (8); the water level sensor (1) and the flow sensor (2) are placed in the rainwater collection tank (4) of the sampling terminal; The pumping and drainage system comprises a water pipe (5), a water pump system (16), a water pump control module (14) and a solenoid valve control module (12); the water pump system (16) is connected with the water pump control module (14) through a data line; the water pump system ( 16) The water inlet pipe is connected to the rainwater collection tank (4), the water outlet pipe is connected to the sampling bottle (18) in the water collection system, and the main pipe valve (17) is set on the water inlet pipe or the water outlet pipe, and the main pipe valve (17) is connected with the Electromagnetic valve control module (12) is connected; The remote control system includes a mobile terminal device (9) and a mobile terminal signal receiving antenna (7); the mobile terminal signal receiving antenna (7) is connected to the mode control module (13) through a data line; An intelligent control system is composed of a sensor control module (8), a mode control module (13), a solenoid valve control module (12), a water pump control module (14) and an operation panel (11); The power supply system is connected with other system circuits. 2. The rainwater runoff intelligent sampling device according to claim 1, characterized in that, the water collecting system comprises a main pipe valve (17), a branch pipe valve (19) and a plurality of sampling bottles. 3. The rainwater runoff intelligent sampling device according to claim 1, wherein the power supply system (15) has three power supply modes: external AC220V, built-in rechargeable lithium battery and solar panel. 4. The rainwater runoff intelligent sampling device according to claim 1, wherein the intelligent control system is equipped with a data storage device.