An online water quality monitoring and early warning system for water supply pipelines

Abstract

This invention discloses an online water quality monitoring and early warning system for water supply pipelines, comprising: a water supply pipeline, an electrically controlled valve, an online water quality monitoring device, a wireless communication antenna, a cloud platform, and a client terminal. This invention has the following advantages and effects: by installing an online water quality monitoring device at the inlet of the water supply pipeline entering the residential area, the water quality of the residential area can be monitored in real time. When the water quality in the residential area changes significantly and exceeds drinking water quality standards, an alert for exceeding water quality standards and a notice to stop water use are issued to all residents through the Internet of Things platform and the community's WeChat group. Once impurities in the pipeline have completely settled, water quality indicators meet requirements, and pollutants in the pipeline have been cleaned, residents are notified that normal water use is possible. This system ensures the safety of residents' water use, conserves water, and provides some protection for water-using appliances in the residential area.

Description

Technical Field

[0001] This invention relates to the field of water supply systems, and in particular to an online water quality monitoring and early warning system for water supply pipelines. Background Technology

[0002] When water supply pipes inside or outside the residential area malfunction (such as bursting or aging) and require repair, the water supply company will typically shut off the valves to stop the water supply and proceed with excavation and repairs (such as pipe replacement). Once the pipe repairs are complete, the repair personnel will reopen the valves to resume water supply.

[0003] Because most water supply pipes have been in use for a long time, a lot of rust and gravel will accumulate inside them. Normally, these impurities are much heavier than water and will settle at the bottom of the pipes. However, the quality of drinking water will not be affected by their presence (as can be reflected by sensory water quality indicators such as turbidity and color).

[0004] However, when the water supply valve is opened after pipeline repair, the water flow rate inside the pipeline will quickly change from a static state to a fast-flowing state. The high-speed water flow will impact the impurities settled at the bottom of the pipeline, causing them to immediately fill the drinking water inside the pipeline. This results in serious water pollution incidents, such as the water flowing from the tap turning yellow or black, causing residents to be unable to use water normally for a short period of time.

[0005] The usual practice now is that when water supply is restored after pipe repairs and the water turns yellow or black, residents are asked to turn on their taps and let the water run until the water containing impurities is drained (usually by visual inspection) before they can start using water normally.

[0006] This will lead to three serious problems:

[0007] First, the so-called clean water flowing from the tap and visible to the naked eye may not actually be completely drained (i.e., free of sediment and impurities). If residents drink this water from the pipes, it may be harmful to their health and, in severe cases, cause illness.

[0008] Secondly, after pipeline repairs, a large amount of water usually needs to be drained until all impurities in the pipeline are discharged and completely settled before the turbidity of the water reaches the standard required level. Therefore, discharging large quantities of drinking water containing impurities into the sewer system is a serious waste of freshwater resources.

[0009] Third, after pipeline repairs, due to the large amount of water released, many impurities enter water-using appliances (such as faucets, toilets, water meters, water heaters, etc.) through the pipelines, making these appliances prone to blockage and damage.

[0010] Therefore, it is particularly important to design a system that can ensure the safety of residents' water use, conserve water, and provide some protection for water-using appliances in the community. Summary of the Invention

[0011] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an online water quality monitoring and early warning system for water supply pipelines, which can not only ensure the safety of residents' water use, but also save water and provide a certain degree of protection for water-using appliances in the community.

[0012] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an online water quality monitoring and early warning system for water supply pipelines, comprising:

[0013] Water supply pipes, branch pipes connecting each household;

[0014] An electrically controlled valve is installed on the water supply pipeline and is used to control its opening and closing;

[0015] The online water quality monitoring device includes a turbidity sensor, a residual chlorine sensor, and a processor. The turbidity sensor and the residual chlorine sensor are installed on the water supply pipeline and located in front of the electrically controlled valve. The processor is used to analyze and process the values ​​monitored by the turbidity sensor and the residual chlorine sensor.

[0016] A wireless communication antenna is connected to the online water quality monitoring device and is used to transmit the monitored information;

[0017] The cloud platform is used to receive monitoring data;

[0018] The client terminal is used to receive notifications issued by the cloud platform.

[0019] In a preferred embodiment, the present invention can be further configured as follows: a filter is provided below the water supply pipe, an inlet pipe connected to the water supply pipe is provided at the upper end of the filter, the inlet pipe is located between the online water quality monitoring device and the electrically controlled valve, and a manual valve is provided on the inlet pipe; an outlet pipe connected to the water supply pipe is provided at the end face of the filter, and the outlet pipe is located behind the electrically controlled valve.

[0020] In summary, the present invention has the following beneficial effects:

[0021] 1. By installing online water quality monitoring devices at the entrance of the water supply pipeline into the community, the water quality of the residential community can be monitored in real time. When the water quality in the community changes significantly and exceeds the drinking water quality index, the community will issue a water quality warning and a notice to stop water use to all residents through the Internet of Things platform and the community WeChat group. When the impurities in the pipeline are completely settled, the water quality index meets the requirements, and the pollutants in the pipeline are cleaned up, the residents will be notified that they can use water normally. This can not only ensure the safety of residents' water use, but also save water and play a certain role in protecting the water appliances in the community.

[0022] 2. By installing filtration equipment at the inlet of the water supply pipeline, the water source can be temporarily filtered for use as emergency drinking water for residents;

[0023] 3. By adopting a multi-stage filtration method, the filter level can be selected based on the monitored data, reducing the frequency of filter replacement. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment;

[0025] Figure 2 This is a schematic diagram of the filter structure in an embodiment;

[0026] Figure 3 This is a schematic diagram of the locking mechanism in an embodiment.

[0027] Reference numerals in the attached diagram: 1. Water supply pipe; 2. Electrically controlled valve; 3. Online water quality monitoring device; 31. Turbidity sensor; 32. Residual chlorine sensor; 33. Processor; 4. Wireless communication antenna; 5. Cloud platform; 6. Client terminal; 7. Filter; 71. Inlet pipe; 72. Manual valve; 73. Outlet pipe; 74. Filter tube; 741. Cavity; 742. Inlet hole; 75. Filter element; 751. Frame; 752. Core; 753. Switch hole; 8. Drive mechanism; 81. Drive rod; 82. Handwheel; 83. Locking mechanism; 84. Lock block; 85. Lock plate; 86. Lock groove; 9. Switch mechanism; 91. Switch plate; 92. Switch tube; 93. Switch base; 94. Switch ring; 95. Mesh cloth. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1:

[0030] like Figure 1 As shown, an online water quality monitoring and early warning system for water supply pipelines includes a water supply pipeline 1, an electrically controlled valve 2, an online water quality monitoring device 3, a wireless communication antenna 4, a cloud platform 5, and a customer terminal 6.

[0031] like Figure 1 As shown, water supply pipe 1 is connected to the branch pipe of each household, and electric control valve 2 is installed on water supply pipe 1 and is used to control its opening and closing.

[0032] like Figure 1 As shown, the online water quality monitoring device 3 includes a turbidity sensor 31, a residual chlorine sensor 32, and a processor 33. The turbidity sensor 31 and the residual chlorine sensor 32 are installed on the water supply pipe 1 and located in front of the electrically controlled valve 2. The processor 33 is used to analyze and process the values ​​monitored by the turbidity sensor 31 and the residual chlorine sensor 32.

[0033] like Figure 1 As shown, the wireless communication antenna 4 is connected to the online water quality monitoring device 3 and is used to transmit the monitored information. The cloud platform 5 is used to receive monitoring data, and the client terminal 6 is used to receive notifications issued by the cloud platform 5.

[0034] According to national drinking water hygiene standards, the turbidity level at the end of urban water supply networks should not exceed 1.0 NTU. Therefore, the monitoring and early warning system can set three warning levels for turbidity: Level 1 warning, turbidity < 0.6 NTU; Level 2 warning, turbidity ≥ 0.6 NTU and ≤ 1.0 NTU; and Level 3 warning, turbidity > 1.0 NTU. The water quality warning lines can be adjusted according to local water quality conditions.

[0035] When the water quality index is within the Level 1 warning line, it indicates that the turbidity index of the water supply is in good condition. The measurement data obtained by the online water quality monitoring device 3 does not need to be reported to the cloud platform 5 immediately. The measurement data is temporarily stored in the memory of the online water quality monitoring device 3 and can be reported to the cloud platform 5 within a specified time.

[0036] When the water quality index falls within the Level 2 warning range, it indicates that the turbidity index of the water supply is changing or fluctuating in a negative direction. At this time, the online water quality monitoring device 3 will report the measurement data to the cloud platform 5 in real time. The cloud platform 5 then needs to analyze and judge the fluctuation characteristics of the turbidity index and report it to the cloud platform 5.

[0037] When the water quality reaches the Level 3 warning level, it indicates that the water quality has exceeded the standard. In addition to uploading the measurement data to the cloud platform 5 in real time, the electric control valve 2 will automatically cut off the water supply and stop the water supply. If the water quality deterioration is caused by the valve being opened after the water supply pipeline 1 has been repaired, the electric control valve 2 can be closed without opening it, and the system can enter the water quality monitoring state.

[0038] When the water supply is resumed after maintenance of the external pipelines, or if the water quality in the community's inlet pipe 71 deteriorates for some reason, the online water quality monitoring device 3 installed in the community's inlet pipe 71 will detect the abnormal water quality (usually the turbidity index will exceed the level 3 warning indicator). At this time, after receiving the water quality abnormality (caused by maintenance) information, the cloud platform 5 will send a message to the mobile phones of the users in the community via WeChat group to temporarily stop water use (it is recommended that users do not use water).

[0039] When the online water quality monitoring device 3 stably detects that the turbidity water quality index is lower than or equal to level 2, the electric control valve 2 will automatically open. At the same time, the water users in the community will be notified through the cloud platform 5 that they can use water normally.

[0040] At this time, the online water quality monitoring device 3 continues to monitor the water quality entering the community.

[0041] Example 2:

[0042] like Figure 2 As shown, a filter 7 is installed on one side of the water supply pipe 1. An inlet pipe 71 connected to the water supply pipe 1 is installed at the upper end of the filter 7. The inlet pipe 71 is located between the online water quality monitoring device 3 and the electric control valve 2, and a manual valve 72 is installed on the inlet pipe 71. An outlet pipe 73 connected to the water supply pipe 1 is installed at the end face of the filter 7. The outlet pipe 73 is located behind the electric control valve 2.

[0043] When a user urgently needs water, they can open the manual valve 72. At this time, the water will enter the filter 7 and be filtered. The filtered water will then enter the pipes leading to the house to meet the user's water needs. This will not damage the user's water appliances and will provide some protection for the appliances.

[0044] like Figure 2 As shown, the filter 7 includes a filter tube 74 and multiple filter elements 75. The filter tube 74 has an internal cavity 741 communicating with a water inlet pipe 71, and its inner wall is provided with water inlet holes 742 spaced apart, communicating with the cavity 741. Each filter element 75 includes an annular frame 751 and a core 752. The core 752 is located inside the frame 751, which is vertically positioned within the filter tube 74. The frame 751 has switch holes 753 on its sidewalls that connect to the water inlet holes 742. The number of filter elements 75 corresponds to the number of water inlet holes 742.

[0045] like Figure 2 As shown, all three filter elements 75 are rotatably connected to the filter tube 74, and the positions of the three switch holes 753 are spirally distributed (i.e., the three switch holes 753 are spaced 45 degrees apart, for example...). Figure 2The left filter element 75 has a switch hole 753 at the bottom, the middle filter element 75 has a switch hole 753 on the side, and the right filter element 75 has a switch hole 753 at the top. It is used to connect the water inlet hole 742 separately. A switch mechanism 9 for opening and closing the flow channel is provided between adjacent filter elements 75. A drive mechanism 8 for controlling the rotation of the filter element 75 is provided on the filter tube 74.

[0046] like Figure 2 As shown, the drive mechanism 8 includes a drive rod 81 and a handwheel 82. The drive rod 81 is horizontally rotatably connected to the filter tube 74 and coaxially passes through and is fixed to the filter element 75 (i.e., the filter element 75 is fixedly sleeved outside the drive rod 81). The outer wall of the filter tube 74 is provided with a locking mechanism 83 for fixing the handwheel 82.

[0047] like Figure 2 , Figure 3 As shown, the locking mechanism 83 includes a locking block 84 and multiple locking plates 85. The locking block 84 is mounted on the handwheel 82, and the locking plates 85 are mounted on the outer wall of the filter tube 74 and surround the drive rod 81. The locking plates 85 are bent, and adjacent locking plates 85 form locking grooves 86 for the locking block 84 to be inserted after rotation. The four locking grooves 86 correspond to four operating states: single filter element operation, dual filter element operation, triple filter element operation, and triple filter element fully closed.

[0048] like Figure 2 As shown, the switching mechanism 9 includes a switch plate 91, a switch tube 92, a switch base 93, and a switch ring 94. The switch plate 91 is horizontally slidably connected inside the filter tube 74 and is coaxially arranged with the drive rod 81, and its outer wall diameter is smaller than the inner wall diameter of the filter tube 74.

[0049] like Figure 2 As shown, the switch tube 92 is sleeved on the outer wall of the drive rod 81 and fixed to the filter element 75. The switch plate 91 is threaded to the outside of the switch tube 92. A locking block 76 is provided on the top of the switch plate 91. A sliding groove (not shown in the figure) is provided inside the filter tube 74. The sliding groove is opened along the axial direction of the drive rod 81 and allows the end of the locking block 76 to be inserted. The locking block 76 and the sliding groove cooperate to restrict the rotation of the switch plate 91, thereby controlling the horizontal sliding of the switch plate 91 when the switch tube 92 rotates.

[0050] like Figure 2 As shown, the switch base 93 is arranged in a ring on the inner wall of the filter tube 74, and the switch ring 94 is disposed on the side wall of the switch plate 91 and abuts against the inner wall of the switch base 93 to achieve flow channel blockage. The lengths of multiple switch rings 94 are arranged in an increasing multiple to control the operation of different numbers of filter cartridges. The inner wall of the switch ring 94 is provided with a mesh 95 to intercept impurities, further improving the filtration effect on the water source.

[0051] When filter 7 is working, based on the monitored data, if the data value is relatively small, the control handwheel 82 drives the drive rod 81 to rotate a short distance. At this time, the drive rod 81 drives the filter element 75 to rotate synchronously, and the switch hole 753 on the filter element 75 closest to the outlet pipe 73 connects to the inlet hole 742 first, while the other inlet holes 742 are blocked by the filter element 75, so that the water source only passes through one filter element 75 (i.e., Figure 2 The rightmost filter element is the first-stage filter element, which filters the water source at this stage.

[0052] If the data value is relatively large, the control handwheel 82 will drive the drive rod 81 to continue rotating, at which point the second-stage filter element 75 (i.e., Figure 2 The switch hole 753 on the middle filter element is connected to the matching water inlet hole 742. At this time, the first-stage filter element 75 blocks the matching water inlet hole 742, meaning that the water source can continuously pass through two filter elements 75 to achieve secondary filtration and ensure that the water source is fully filtered. By repeating this process, multiple filter elements 75 can be used to achieve multi-stage filtration of the water source.

[0053] When the drive rod 81 controls the rotation of the filter element 75, the filter element 75 drives the switch tube 92 to rotate synchronously. The switch tube 92 also drives the switch plate 91 to rotate. However, because the locking block 76 on the switch plate 91 is engaged with the slide groove limiter, the rotation of the switch plate 91 is restricted. Therefore, the rotation of the switch tube 92 can only drive the switch plate 91 to slide horizontally. The switch plate 91 then drives the switch ring 94 to move synchronously, so that the switch ring 94 gradually disengages from the switch seat 93, realizing the flow channel connection between two adjacent filter elements 75. That is to say, when the second-stage filter element 75 is turned on, the switch plate 91 between the first and second stages opens the corresponding flow channel, thereby ensuring that the water source can continuously pass through multiple filter elements 75.

[0054] Furthermore, during the rotation of the handwheel 82, the handwheel 82 drives the locking block 84 to move synchronously, and the locking block 84 presses down on the locking plate 85, deforming it and embedding it into the locking groove 86, thereby fixing the handwheel 82 and the drive rod 81. Simultaneously, since the locking groove 86 matches the switch hole 753, it is possible to quickly determine whether several filter elements 75 are working (see 3 for details) and to fix them, increasing stability during use. It can be seen that in this application, the switch holes 753 of adjacent filter elements 75 are offset at a 45-degree angle.

[0055] The specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An online water quality monitoring and early warning system for water supply pipelines, characterized in that: The utility model provides a water quality online monitoring system, which comprises the following: A water supply pipeline (1) connected to the branch pipeline of each household; An electric control valve (2) arranged on the water supply pipeline (1) and used for controlling the opening and closing thereof; A water quality online monitoring device (3) comprising a turbidity sensor (31), a residual chlorine sensor (32) and a processor (33), wherein the turbidity sensor (31) and the residual chlorine sensor (32) are arranged on the water supply pipeline (1) and located in front of the electric control valve (2), and the processor (33) is used for analyzing and processing the values monitored by the turbidity sensor (31) and the residual chlorine sensor (32); A wireless communication antenna (4) connected to the water quality online monitoring device (3) and used for transmitting the monitored information; A cloud platform (5) used for receiving monitoring data; A customer terminal (6) used for receiving the notification issued by the cloud platform (5); A filter (7) arranged below the water supply pipeline (1), wherein the upper end of the filter (7) is provided with a water inlet pipe (71) connected to the water supply pipeline (1), the water inlet pipe (71) is located between the water quality online monitoring device (3) and the electric control valve (2), a manual valve (72) is arranged on the water inlet pipe (71), and the end surface of the filter (7) is provided with a water outlet pipe (73) connected to the water supply pipeline (1), and the water outlet pipe (73) is located behind the electric control valve (2); The filter (7) comprises a filter pipe (74) and a plurality of filter cores (75), the inside of the filter pipe (74) is provided with a cavity (741) communicating with the water inlet pipe (71), the top wall is provided with water inlet holes (742) communicating with the cavity (741) at intervals, the filter core (75) comprises a ring-shaped frame (751) and a core body (752), the core body (752) is located inside the frame (751), and the frame (751) is vertically arranged in the filter pipe (74) and provided with switch holes (753) connected to the water inlet holes (742) on the side wall; The filter core (75) is rotationally connected to the filter pipe (74), the positions of the switch holes (753) are distributed in a spiral shape and used for individually communicating with the water inlet holes (742), a switch mechanism (9) for opening and closing a flow channel is arranged between adjacent filter cores (75), and the filter pipe (74) is provided with a driving mechanism (8) for controlling the rotation of the filter core (75); The driving mechanism (8) comprises a driving rod (81) and a hand wheel (82), the driving rod (81) is horizontally rotationally connected to the filter pipe (74) and coaxially penetrates and is fixed to the filter core (75), and the outer wall of the filter pipe (74) is provided with a locking mechanism (83) for fixing the hand wheel (82). The switch mechanism (9) comprises a switch plate (91), a switch tube (92), a switch seat (93) and a switch ring (94), the switch plate (91) is horizontally slidingly connected in the filter tube (74) and coaxially arranged with the driving rod (81), and the outer wall diameter is less than the inner wall diameter of the filter tube (74), the switch tube (92) is sleeved on the outer wall of the driving rod (81) and fixed to the filter core (75), the switch plate (91) is threadedly connected to the switch tube (92) for controlling the horizontal sliding of the switch plate (91) when the switch tube (92) rotates, the switch seat (93) is annularly arranged on the inner wall of the filter tube (74), the switch ring (94) is arranged on the side wall of the switch plate (91) and abuts against the inner wall of the switch seat (93), and the lengths of the plurality of switch rings (94) are arranged in an increasing multiple.

2. The water supply pipeline online water quality monitoring and early warning system according to claim 1, characterized in that: The locking mechanism (83) comprises a lock block (84) and a plurality of lock plates (85), the lock block (84) is arranged on the hand wheel (82), the lock plate (85) is arranged on the outer wall of the filter tube (74) and surrounds the driving rod (81), the lock plate (85) is arranged in a bent shape and the lock slots (86) for embedding the lock block (84) after rotation are formed between adjacent lock plates (85), and the lock slots (86) correspond to the switch holes (753).

3. The water supply pipeline online water quality monitoring and early warning system according to claim 1, characterized in that: The inner wall of the switch ring (94) is provided with a mesh cloth (95).

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