Rainfall on-line detection system

Abstract

The utility model discloses a rainfall on-line detection system, and belongs to the technical field of rainfall detection. The device comprises a rain receiving funnel; the at least one detection pool is internally provided with a detection device, a first inlet of the detection pool is communicated with the rain receiving funnel through a first control pipeline, and the detection pools are sequentially communicated in series; an inlet of the sample barrel is communicated with the rain receiving funnel through a second control pipeline; the sample barrels are mutually communicated in parallel; and an outlet of the cleaning barrel is communicated with the first control pipeline through a third control pipeline. The rainfall on-line detection system solves the problem that the accuracy of detection data of an existing rainfall on-line detection system is not high.

Description

Technical Field

[0001] The utility model relates to the technical field of precipitation detection, in particular to an online precipitation detection system. Background Art

[0002] With the development of automation technology and analytical detection technology in my country, automatic collection and detection of precipitation has become the mainstream of precipitation monitoring. For example, the online precipitation detection system and method disclosed in publication number CN105758890A extracts rainwater from the rain funnel through a sample extraction peristaltic pump and transports it to the conductivity measurement tank and pH measurement tank, and completes the determination of pH and conductivity values ​​in the rainwater sample through the conductivity measurement electrode and the pH measurement electrode; by switching the sample retention / measurement switching valve, part of the rainwater is collected through the system sample retention interface, and the monitoring personnel take it to the laboratory for further analysis of the anion and cation components in the rainwater, which can realize the online automatic measurement function of the ion components in the precipitation sample. The above technical solution has the following technical problems: 1. The system does not have a container for storing precipitation and is only suitable for situations where the interval between two precipitations is long. If the interval between the two precipitations is short, sample mixing will occur and the detection data accuracy is not high; 2. When the water sample in this solution enters the EC tank or pH tank for detection, it will first be filtered through a pipeline filter and then injected into the EC tank or pH tank through a peristaltic pump, resulting in the water sample detection data not being consistent with the actual situation, thereby reducing the accuracy of the detection data. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the detection data accuracy of the existing precipitation online detection system is not high.

[0004] In view of the above technical problems, the utility model provides the following technical solutions:

[0005] A precipitation online detection system comprises: a rain collecting funnel; at least one detection pool, in which a detection device is arranged, a first inlet of the detection pool is connected to the rain collecting funnel through a first control pipeline, and the detection pools are connected in series in sequence; at least one sample barrel, the inlet of the sample barrel is connected to the rain collecting funnel through a second control pipeline; the sample barrels are connected in parallel with each other; and a cleaning barrel, the outlet of the cleaning barrel is connected to the first control pipeline through a third control pipeline.

[0006] In some implementation modes of the utility model, a suction pump and at least one control valve are provided on the first control pipeline; at least one control valve is provided on the second control pipeline; and a suction pump is provided on the third control pipeline.

[0007] Some embodiments of the utility model further include an air blowing pipeline, on which an air blowing pump and at least one control valve are provided, and the air blowing pipeline is connected to the first control pipeline, the second control pipeline and the third control pipeline respectively.

[0008] In some embodiments of the utility model, a connecting groove is further provided on the first control pipeline, a main control valve is provided on the pipeline between the connecting groove and the rain collecting funnel, and the second control pipeline, the third control pipeline and the blowing pipeline are respectively connected to the first control pipeline through the connecting groove.

[0009] Some embodiments of the present invention further include a waste liquid pool, wherein the outlet of the detection pool is connected to the waste liquid pool via a drainage control pipeline, and a control valve is provided on the drainage control pipeline.

[0010] In some embodiments of the utility model, two detection pools are provided, namely a first detection pool and a second detection pool. The first inlet of the first detection pool is connected to the rain collecting funnel through a first control pipeline, and the first outlet of the first detection pool is connected to the first inlet of the second detection pool.

[0011] In some implementations of the utility model, a liquid level detection device is provided in the second detection pool.

[0012] Some embodiments of the utility model further include a conductivity standard solution barrel, the outlet of the conductivity standard solution barrel is connected to the second inlet of the first detection cell through a fourth control pipeline, and a suction pump is provided on the fourth control pipeline.

[0013] Some embodiments of the utility model further include at least one pH value standard solution barrel, the outlet of the pH value standard solution barrel is connected to the second inlet of the second detection cell through a fifth control pipeline, and a suction pump is provided on the fifth control pipeline.

[0014] Some embodiments of the utility model further include a protection liquid barrel, the outlet of the protection liquid barrel is connected to the third inlet of the second detection tank through a sixth control pipeline, and a suction pump is provided on the sixth control pipeline.

[0015] The technical solution of the utility model has the following technical effects compared with the prior art:

[0016] In the precipitation online detection system provided by the utility model, at least one sample barrel is provided, and the inlet of the sample barrel is connected to the rain collecting funnel through the second control pipeline. When the interval between two rainfalls is short, the rainwater of the second rainfall can be transported to the sample barrel through the second control pipeline; at the same time, when multiple sample barrels connected in parallel are provided, precipitation of different times can be collected, and can be back-drawn from the sample barrel for detection, so as to avoid the problem that the rainwater entering the detection pool does not conform to the preset situation due to the short rainfall interval. In addition, the detection system is provided with a cleaning barrel, which can realize the cleaning of the pipeline before the detection and after the detection of a rainfall, so that the accuracy of the detection data is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the purpose and advantages of the present invention, wherein:

[0018] Figure 1 It is a schematic diagram of a specific implementation of the precipitation online detection system of the utility model;

[0019] Figure 2 A cleaning principle diagram of a specific implementation of the precipitation online detection system of the utility model;

[0020] Figure 3 A flow diagram of a specific implementation of the online precipitation detection system of the utility model according to the precipitation field detection method;

[0021] Figure 4 It is a flow diagram of the detection method according to time period in a specific implementation mode of the online precipitation detection system of the utility model. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 1 The figure shows a specific implementation of the online precipitation detection system (hereinafter referred to as the detection system) provided by the utility model. The detection system is used to collect rainfall and realize online detection of, for example, the electrical conductivity and pH value of rainwater.

[0027] The detection system includes a rain collecting funnel 1 for collecting rainfall; a detection pool for rainwater detection, and the detection pool can be connected to different detection devices 2 according to different detection items. In the specific implementation of the utility model, the working process of the system is explained by taking the detection of rainwater conductivity and rainwater pH value as an example. Specifically, two detection pools are provided, namely a first detection pool 701 and a second detection pool 702. The first detection pool 701 is used to detect rainwater conductivity, and the second detection pool 702 is used to detect rainwater pH value. Among them, the first inlet of the first detection pool 701 is connected to the rain collecting funnel 1 through the first control pipeline A, and the first outlet of the first detection pool 701 is connected to the first inlet of the second detection pool 702; the detection system also includes at least one sample barrel 401 for collecting rainwater to realize time-divided detection, the inlet of the sample barrel 401 is connected to the rain collecting funnel 1 through the second control pipeline B, and the multiple sample barrels 401, 402...408 are connected in parallel with each other; the detection system also includes a cleaning barrel 409 for cleaning the pipeline, the outlet of the cleaning barrel 409 is connected to the first control pipeline A through the third control pipeline C, the cleaning barrel 409 is used to contain pure water, and when the third control pipeline C and the first control pipeline A are controlled to be in an open state, the pipeline cleaning can be realized.

[0028] In the above detection system, at least one sample barrel 401 is provided, and the inlet of the sample barrel 401 is connected to the rain collecting funnel 1 through the second control pipeline B. When the interval between two rainfalls is short, the rainwater of the second rainfall can be transported to the sample barrel 401 through the second control pipeline B; at the same time, when multiple sample barrels 401 connected in parallel are provided, precipitation of different times can be collected, and can be back-drawn from the sample barrel 401 for detection, so as to avoid the problem that the rainwater entering the detection pool does not meet the preset conditions due to the short rainfall interval. In addition, the detection system is provided with a cleaning barrel 409, which can realize the cleaning of the pipeline before the detection and after the detection of a rainfall, so that the accuracy of the detection data is greatly improved.

[0029] Specifically, in an optional embodiment, a suction pump 602 and at least one control valve 204 are provided on the first control pipeline A. When the suction pump 602 is started, the rain collecting funnel 1 can be sucked into the first detection tank 701 and the second detection tank 702 in turn; more specifically, the first outlet of the first detection tank 701 is located on the upper side of the first detection tank 701, that is, the amount of rainwater in the first detection tank 701 overflows into the second detection tank 702 after it is sufficient. A liquid level detection device 901 is provided in the second detection tank 702. When the liquid level detection device 901 detects that the water level reaches a set threshold, the first control pipeline A is controlled to be closed to stop the liquid supply.

[0030] At least one control valve 203 is provided on the second control pipeline B. Specifically, the sample barrel 401 is located at the lower side of the rain collecting funnel 1. By controlling the second control pipeline B to open, rainwater can be directly discharged into the sample barrel 401. The third control pipeline C is provided with a suction pump 601. After detecting a rainfall, the third control pipeline C and the first control pipeline A are opened to clean the entire pipeline.

[0031] Specifically, in an optional embodiment, the detection system further includes an air blowing pipeline D, on which an air blowing pump 301 and at least one control valve 202 are provided, and the air blowing pipeline D is respectively connected with the first control pipeline A, the second control pipeline B and the third control pipeline C. After the detection system detects rainfall once, the third control pipeline C and the first control pipeline A are controlled to be opened to clean the pipelines, and then the air blowing pump 301 on the air blowing pipeline D is controlled to be opened to dry the pipelines of the detection system.

[0032] Specifically, in an optional embodiment, a connecting groove 501 is further provided on the first control pipeline A, and a main control valve 201 is provided on the pipeline between the connecting groove 501 and the rain collecting funnel 1, and the second control pipeline B, the third control pipeline C and the blowing pipeline D are respectively connected to the first control pipeline A through the connecting groove 501, and the connection of each pipeline is achieved through the connecting groove 501, especially when the blowing pump 301 is performing blowing, each control pipeline can be dried.

[0033] Specifically, in an optional embodiment, the detection system further includes a waste liquid pool 3, and the outlets of the first detection pool 701 and the second detection pool 702 are respectively connected to the waste liquid pool 3 through a drainage control pipeline, and the drainage control pipeline is provided with control valves 801 and 802. When a rainfall detection is completed, the drainage control pipeline is opened to drain the rainwater for the next rainfall detection.

[0034] Specifically, in an optional embodiment, the system further includes a protection liquid barrel 410 for containing electrode protection liquid, the outlet of the protection liquid barrel 410 is connected to the third inlet of the second detection tank 702 through a sixth control pipeline G, and a suction pump 603 is provided on the sixth control pipeline G. After pH value calibration or a rainfall detection, the suction pump 603 on the sixth control pipeline G is controlled to open, so that the electrode protection liquid is sucked into the second detection tank 702 to achieve electrode protection.

[0035] The detection system usually performs pipeline cleaning before detection. The control method of the cleaning process is as follows: close the main control valve 201, the control valve 202, and the control valve 203, open the control valve 204, and control the suction pump 601 on the third control pipeline C. Figure 2 The arrow indicates the direction. Pure water is sucked into the connecting groove 501 by the suction pump 601, and enters the first detection pool 701 through the control valve 204. When the first detection pool 701 is full, it flows through its first outlet along the pipeline 101 to the second detection pool 702. When the water in the second detection pool 702 is full, the liquid level detection device 901 detects a signal, controls the suction pump 601 to stop working, opens the control valves 801 and 802, and discharges the water into the waste liquid pool 3. The control valve 202 is opened, the air blowing pump 301 is turned on, and air is blown to each control pipeline in the system along the air blowing pipeline D. The liquid in the pipeline is discharged through the control valves 801 and 802. After the air blowing is set for a time, it stops working, and the control valves 801, 802 and the control valve 202 are closed to complete one cleaning and purging. The above cleaning and purging process can be repeated multiple times according to the situation.

[0036] The detection system has multiple detection methods, for example, including detection by rainfall events and detection by time period. The detection process of the two detection methods is described in detail below.

[0037] 1. Detection method according to precipitation: At the beginning of the first rainfall, the rain funnel 1 is opened, and the main control valve 201 remains closed. After three rounds of cleaning and purging according to the above cleaning and purging method, the control valve 202 and the control valve 203 are kept closed, and the main control valve 201 and the control valve 204 are opened. Rainwater flows along the pipeline ( Figure 3 When the first detection pool 701 is full, the water flows through the first outlet along the pipeline 101 to the second detection pool 702. When the second detection pool 702 is full, the liquid level detection device 901 detects a signal, the main control valve 201 is closed, the control valves 801 and 802 are opened, the control valve 202 is opened, the air pump 301 starts to work, and air starts to be blown into the control pipeline ( Figure 3 The main control valve 201 is opened, and the rainwater enters the first detection tank 701 and the second detection tank 702 again. The liquid level detection device 901 detects the signal, and the main control valve 201 is closed. The conductivity electrode and the pH electrode transmit the measurement data to the detection device 2 to complete the detection. The control valves 801 and 802 are opened, the control valve 202 is opened, the air pump 301 starts to blow air into the flow path system, and the liquid in the pipeline is discharged along the pipeline where the control valves 801 and 802 are located. The air pump 301 stops working after the set threshold is run, and the control valve 202 and the control valves 801 and 802 are closed to complete the rainwater drainage. The control valve 204 is closed, the main control valve 201, the control valve 203, and the control valve 212 are opened, and the rainwater enters the sample barrel 401 to complete the sample retention. After the precipitation stops, the main control valve 201, the control valve 203, and the control valve 212 are closed, and the cleaning operation is performed three times. After the second rain begins, the previous action of the first rain is repeated, and after the detection is completed, the rainwater is discharged into the sample barrel 402. This working method can solve the problem of mixing samples from multiple rainwater sessions, because there are many sample barrels, and samples only need to be extracted regularly, and there is no need to take them immediately after the precipitation ends.

[0038] Detection method by time period: When precipitation starts, the rain funnel 1 is opened, and the main control valve 201 remains closed. After three rounds of cleaning and purging, the main control valve 201, control valve 203, and control valve 212 are opened, and rainwater is directly discharged into the sample barrel 401 (such as Figure 4The solid arrow direction shown in the figure) is used for the rainwater in the current time period or on the day, and all the rainwater is discharged into a sample barrel 401. When the detection time point is reached, such as after 9:00 am, three cleanings are performed first, the main control valve 201 and the control valve 204 are closed, the control valves 203 and 212 are opened, and the sample pump 602 starts to work, and the rainwater stored in the sample barrel 401 is pumped into the first detection tank 701 and the second detection tank 702. The rainwater is also rinsed once before measurement, and the measurement data is transmitted to the detection device 2 to complete the detection. After the detection is completed, it is cleaned three times, and the protective liquid is passed into the protective electrode, specifically: the suction pump 603 is turned on, and the protective liquid in the protective liquid barrel 410 is pumped into the second detection tank 702. When the liquid level detection device 901 detects a signal, the suction pump 603 is controlled to stop working.

[0039] In order to realize automatic conductivity calibration, the detection system further includes a conductivity standard liquid barrel 411 for containing a conductivity standard liquid, the outlet of the conductivity standard liquid barrel 411 is connected to the second inlet of the first detection tank 701 through a fourth control pipeline E, and a suction pump 604 is provided on the fourth control pipeline E. When the control pipeline of the detection system is clean and dry, the conductivity standard liquid in the conductivity standard liquid barrel 411 can be sucked into the first detection tank 701 by controlling the suction pump 604 on the fourth control pipeline E to realize the calibration of the conductivity detection device; after the calibration is completed, it is discharged into the waste liquid tank 3, and then the pipeline is cleaned and dried to perform the next rainfall detection.

[0040] The following is the process of automatic calibration of conductivity of the system: refer to the above-mentioned cleaning and purging method to perform three rounds of cleaning and purging, control the suction pump 604 to work, and extract the standard liquid in the conductivity standard liquid barrel 411 into the first detection tank 701. After the first detection tank 701 is full, it enters the second detection tank 702 along the pipeline 101. After the second detection tank 702 is full of water, the liquid level detection device 901 detects a signal, controls the suction pump 604 to stop working, and controls valves 202, 204, 801, and 802 to open. Control the air pump 301 to work and start blowing air into the system. The liquid in the pipeline is discharged from control valves 801 and 802. After the air pump 301 runs for a set time, it stops working, and control valves 202, 204, 801, and 802 are closed to complete one rinse. The suction pump 604 works again to extract the standard liquid in the conductivity standard liquid barrel 411 into the first detection pool 701 and the second detection pool 702. After the first detection pool 701 is full of water, the liquid level detection device 901 detects a signal, controls the suction pump 604 to stop working, and the conductivity electrode begins to calibrate. After the calibration is completed, the control valves 202, 204, 801, and 802 are opened, and the air pump 301 starts to blow air into the flow path system, and the liquid in the pipeline is discharged from the control valves 801 and 802. The air pump 301 stops working after running for 1 minute, and the control valves 202, 204, 801, and 802 are closed. Cleaning and purging are performed 3 more times.

[0041] Similarly, in order to realize automatic calibration of pH value, the detection system further comprises at least one pH value standard solution barrel, the outlet of the pH value standard solution barrel is connected with the second inlet of the second detection tank 702 through a fifth control pipeline, and the fifth control pipeline is provided with suction pumps 605, 606, 607. In an optional embodiment, as Figure 1 As shown, the detection system includes three pH standard solution barrels, and the pH values ​​of the standard solutions in the three pH standard solution barrels are 4, 7, and 9, respectively. For the convenience of description, the three pH standard solution barrels are respectively a pH4 standard solution barrel 412, a pH7 standard solution barrel 413, and a pH9 standard solution barrel 414. The outlets of the pH4 standard solution barrel 412, the pH7 standard solution barrel 413, and the pH9 standard solution barrel 414 are respectively connected to the second inlet of the second detection tank 702 through a three-way connector, or are connected to the second inlet, the third inlet, and the fourth inlet of the second detection tank 702. The calibration of different pH values ​​of the detection device is achieved by respectively controlling the suction pumps 605, 606, and 607 on the fifth control pipeline between the pH4 standard solution barrel 412, the pH7 standard solution barrel 413, and the pH9 standard solution barrel 414 and the second detection tank 702.

[0042] The pH calibration is the same as the conductivity calibration procedure. Suction pumps 607, 606, and 605 extract standard solutions from pH4 standard solution barrel 412, pH7 standard solution barrel 413, and pH9 standard solution barrel 414 in sequence. Each calibration is performed by first cleaning 3 times, then rinsing once, and then calibrating. After the pH calibration is completed, clean 3 times and then pass the protective solution.

[0043] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present utility model.

Claims

1. A precipitation online detection system, characterized in that: include: Rain funnel; At least one detection pool, wherein a detection device is arranged in the detection pool, a first inlet of the detection pool is connected to the rain collecting funnel through a first control pipeline, and the detection pools are connected in series in sequence; At least one sample barrel, the inlet of the sample barrel is connected to the rain collecting funnel through a second control pipeline; the sample barrels are connected in parallel with each other; A cleaning barrel, wherein the outlet of the cleaning barrel is connected to the first control pipeline through a third control pipeline.

2. The precipitation online detection system according to claim 1, characterized in that: The first control pipeline is provided with a suction pump and at least one control valve; the second control pipeline is provided with at least one control valve; and the third control pipeline is provided with a suction pump.

3. The precipitation online detection system according to claim 1, characterized in that: It also includes an air blowing pipeline, on which an air blowing pump and at least one control valve are provided, and the air blowing pipeline is connected to the first control pipeline, the second control pipeline and the third control pipeline respectively.

4. The precipitation online detection system according to claim 3, characterized in that: A connecting groove is also provided on the first control pipeline, and a main control valve is provided on the pipeline between the connecting groove and the rain collecting funnel. The second control pipeline, the third control pipeline and the air blowing pipeline are respectively connected to the first control pipeline through the connecting groove.

5. The precipitation online detection system according to claim 1, characterized in that: It also includes a waste liquid pool, and the outlets of the detection pool are connected to the waste liquid pool through drainage control pipelines, and the drainage control pipelines are provided with control valves.

6. A precipitation online detection system according to any one of claims 1-5, characterized in that: Two detection pools are provided, namely a first detection pool and a second detection pool. The first inlet of the first detection pool is connected to the rain collecting funnel through a first control pipeline, and the first outlet of the first detection pool is connected to the first inlet of the second detection pool.

7. The precipitation online detection system according to claim 6, characterized in that: A liquid level detection device is provided in the second detection pool.

8. The precipitation online detection system according to claim 6, characterized in that: It also includes a conductivity standard solution barrel, the outlet of the conductivity standard solution barrel is connected to the second inlet of the first detection cell through a fourth control pipeline, and a suction pump is provided on the fourth control pipeline.

9. The precipitation online detection system according to claim 6, characterized in that: It also includes at least one pH value standard solution barrel, the outlet of the pH value standard solution barrel is connected to the second inlet of the second detection tank through a fifth control pipeline, and a suction pump is provided on the fifth control pipeline.

10. The precipitation online detection system according to claim 6, characterized in that: It also includes a protection liquid barrel, the outlet of the protection liquid barrel is connected to the third inlet of the second detection tank through a sixth control pipeline, and a suction pump is provided on the sixth control pipeline.

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