A water quality monitoring device

Abstract

The present application relates to the field of environmental monitoring, especially to a water quality monitoring device, comprising a base; a water supply module fixed on the base; a water quality monitoring module connected with the water supply module and fixed on the base, the water quality monitoring module comprising a water tank and a monitor body, an anti-cavitation part is arranged in the water tank, the anti-cavitation part comprises a drainage assembly, the drainage assembly is communicated with the water supply module, the drainage assembly comprises an inner sleeve and an outer sleeve, the inner sleeve is sleeved on the outside of the monitor body, the outer sleeve is sleeved on the outside of the inner sleeve, a drainage area and a slit area are formed between the inner sleeve and the outer sleeve and are communicated with each other, the water flow in the drainage area communicated with the water supply module flows out through the slit area to form a wrapped water film along the axial direction of the monitor body, and the wrapped water film impacts and destroys the Karman vortex street effect on the outside of the monitor body.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring, and in particular to a water quality monitoring device. Background Technology

[0002] With the rapid development of smart water management technology, real-time online water quality monitoring has become a core component in ensuring urban water supply security. Currently, pipeline-type direct-connection online water quality monitoring devices are widely used in raw water transmission networks. These devices are directly connected in series with the main pipeline via standard flanges. As water flows through the internal cylindrical chamber, multi-parameter probes inserted into the side wall directly contact the water body for detection. They offer advantages such as good water sample representativeness, fast response speed, convenient installation and maintenance, and no need for dedicated station buildings. This has become the mainstream technical solution for monitoring key nodes in the upstream raw water intake and midstream pipeline network of the water supply system. However, current insertion-type pipeline water quality monitoring devices still have certain shortcomings: First, existing pipeline water quality monitoring devices suffer from cavitation problems under conditions of high gas content and high flow velocity in raw water transportation. Specifically, the vertically inserted cylindrical probe, acting as a blunt obstacle, generates a Karman vortex street (e.g., ...) under the influence of water flow. FIG. 8 As shown in the figure, a stable low-pressure zone is formed at the probe, causing a large amount of dissolved gas in the raw water to precipitate and form bubbles. When the bubbles move away from the low-pressure zone at the probe and flow to the high-pressure zone, they burst instantly, generating local impact pressure and micro-jet, which continuously erodes the sensitive element of the probe. At the same time, the flow channel structure with abrupt changes in the diameter of the device cavity further amplifies the cavitation effect, causing the actual service life of the monitoring probe to often fail to reach the nominal value, and also causing fluctuations in monitoring data. Existing technologies that use cavitation-resistant coatings and add guide plates can only delay the damage but cannot eliminate the cavitation phenomenon, thus seriously restricting the long-term reliable operation of pipeline water quality monitoring devices. Summary of the Invention

[0003] In view of the problem that the monitoring probe is susceptible to cavitation corrosion due to the Karman vortex street effect in the above or existing technologies, the present invention is proposed.

[0004] Therefore, the purpose of this invention is to provide a water quality monitoring device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A water quality monitoring device, comprising, Base; A water supply module, which is fixed on a base; A water quality monitoring module is connected to and fixed to a base with a water supply module. The water quality monitoring module includes a water tank and a monitoring unit. The water tank contains an anti-cavitation component, which includes... The diversion component is connected to the water supply module. The diversion component includes an inner sleeve and an outer sleeve. The inner sleeve is fitted onto the outside of the monitor body, and the outer sleeve is fitted onto the outside of the inner sleeve. The inner sleeve and the outer sleeve form an interconnected diversion area and a slit area. The water flowing into the diversion area from the water supply module flows out through the slit area and forms a wrapping water film along the axial direction of the monitor body, which impacts and disrupts the Karman vortex street effect on the outside of the monitor body.

[0006] In a preferred embodiment of the water quality monitoring equipment of the present invention, the water supply module includes a T-shaped filter pipe fixedly installed on a base, a control valve fixedly installed on the T-shaped filter pipe, the control valve being connected to an external water source through the water supply pipe, and the T-shaped filter pipe being connected to a water tank.

[0007] As a preferred embodiment of the water quality monitoring device of the present invention, the water quality monitoring module further includes a controller, which is fixedly installed on the outside of the water tank. An installation rod is fixedly connected to the controller, which penetrates the outer wall of the water tank and extends into its interior. The monitor body is fixed inside the water tank by the installation rod.

[0008] As a preferred embodiment of the water quality monitoring device of the present invention, the monitor body is composed of a rod and a monitoring probe fixedly connected to the rod, and the inner sleeve is sleeved on the outside of the rod.

[0009] In a preferred embodiment of the water quality monitoring device of the present invention, the inner wall of the outer sleeve is formed with a flow guiding surface, and the slit area is defined by the flow guiding surface and the outer wall of the inner sleeve.

[0010] As a preferred embodiment of the water quality monitoring device of the present invention, the diversion assembly further includes an annular water diversion cover, which is fixedly installed on the outside of the rod body and is connected to the water diversion area.

[0011] As a preferred embodiment of the water quality monitoring equipment of the present invention, wherein: a mounting frame is fixedly installed on the outer side of the annular water intake cover, and the mounting frame is fixedly connected to the inner wall of the water tank.

[0012] As a preferred embodiment of the water quality monitoring equipment of the present invention, the diversion component further includes several partitions integrally formed with the outer sleeve, the several partitions being uniformly arranged along the circumferential direction on the inner wall of the outer sleeve, dividing the diversion area into multiple parts.

[0013] As a preferred embodiment of the water quality monitoring device of the present invention, the controller is electrically connected to the monitor body, and an inlet pipe and an outlet pipe are fixedly installed on the outside of the water tank, with the inlet pipe being fixedly connected to a T-shaped filter pipe.

[0014] As a preferred embodiment of the water quality monitoring equipment of the present invention, the anti-cavitation part further includes a diversion pipe, the two ends of which are fixedly connected to the inlet pipe and the annular water intake cover, respectively.

[0015] The beneficial effects of the water quality monitoring equipment of the present invention are as follows: In this application, a wrap-around water film is formed along the axial direction of the monitor body by a diversion component, which forcibly separates the main water flow from the boundary layer on the surface of the monitoring probe. This fundamentally disrupts the symmetrical shear flow conditions formed by the Karman vortex street, eliminates the stable low-pressure zone behind the probe, and avoids high-pressure impacts caused by dissolved gas precipitation and bubble bursting in the raw water, thus significantly extending the actual service life of the monitoring probe. At the same time, the natural pressure difference between the inlet pipe and the diversion area provides all the power, with zero energy consumption and a simple and reliable structure. The diversion area is divided into multiple independent channels by circumferentially distributed baffles, and the inwardly contracting guide surface ensures uniform water film velocity, complete coverage, and stable anti-cavitation effect. Meanwhile, the axially sprayed water flow can continuously flush the surface of the monitoring probe, achieving self-cleaning without power, reducing the adhesion of small and medium-sized particulate impurities, and significantly reducing the frequency and cost of equipment maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] FIG. 1 This is a three-dimensional structural diagram of the present invention.

[0018] FIG. 2 This is a three-dimensional structural diagram of the base and water quality monitoring module of the present invention.

[0019] FIG. 3 This is a three-dimensional structural diagram of the anti-cavitation part of the present invention.

[0020] FIG. 4 This is a three-dimensional structural diagram of the controller and mounting rod of the present invention.

[0021] FIG. 5 This is a three-dimensional structural diagram of the monitoring probe and mounting bracket of the present invention.

[0022] FIG. 6 This is an exploded view of the three-dimensional structure of the inner sleeve, outer sleeve, and partition portion of the present invention.

[0023] FIG. 7 This is a schematic diagram showing the water flow through the anti-cavitation section of the present invention.

[0024] FIG. 8This is a schematic diagram of the Kármán vortex street effect.

[0025] In the diagram: 1. Base; 2. Water supply module; 21. Water supply pipe; 22. Control valve; 23. T-shaped filter pipe; 3. Water quality monitoring module; 31. Water tank; 32. Controller; 33. Monitor body; 331. Rod; 332. Monitoring probe; 34. Mounting rod; 4. Mounting frame; 5. Anti-cavitation part; 51. Drainage assembly; 511. Inner sleeve; 512. Outer sleeve; 513. Partition; 514. Drainage area; 515. Annular water intake cover; 516. Slit area; 517. Guide surface; 52. Diversion pipe; 6. Outlet pipe; 7. Inlet pipe. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Reference FIG. 1~FIG. 8 This embodiment provides a water quality monitoring device, which includes: a base 1; a water supply module 2 fixed to the base 1; and a water quality monitoring module 3 connected to and fixed to the base 1. The water quality monitoring module 3 includes a water tank 31 and a monitor body 33. The water tank 31 is provided with an anti-cavitation section 5, which includes a flow diversion component 51 connected to the water supply module 2. The flow diversion component 51 includes an inner sleeve. The inner sleeve 511 is fitted onto the outside of the monitor body 33, and the outer sleeve 512 is fitted onto the outside of the inner sleeve 511. The inner sleeve 511 and the outer sleeve 512 form an interconnected drainage area 514 and a slit area 516. The water supplied by the water supply module 2 into the drainage area 514 flows out through the slit area 516 and forms a wrapping water film along the axial direction of the monitor body 33, which impacts and destroys the Karman vortex street effect on the outside of the monitor body 33.

[0028] For ease of understanding, the following explains some key terms in this embodiment: Water supply module 2 is responsible for introducing external water sources; water quality monitoring module 3 is the core part for water quality testing, including water tank 31 and monitor body 33; monitor body 33 is the device for performing water quality parameter testing. Anti-cavitation section 5 is used to eliminate cavitation caused by water flow on monitor body 33; flow diversion component 51 is the core component of anti-cavitation section 5, used to guide water flow; inner sleeve 511 and outer sleeve 512 are components of flow diversion component 51, jointly defining the water flow channel; flow diversion area 514 and slit area 516 are different areas of the water flow channel; encapsulated water film is a uniform water layer formed after water flows through slit area 516; Karman vortex street effect refers to the vortex shedding phenomenon generated when fluid flows through a blunt body, which can lead to local low pressure areas and cavitation.

[0029] Reference FIG. 2~FIG. 8 The water supply module 2 includes a T-shaped filter pipe 23 fixedly installed on the base 1. A control valve 22 is fixedly installed on the T-shaped filter pipe 23. The control valve 22 is connected to an external water source through the water supply pipe 21. The T-shaped filter pipe is connected to the water tank 31.

[0030] It should be noted that the T-shaped filter pipe 23 refers to a T-shaped pipe with a built-in T-shaped filter, whose main function is to remove solid particles, suspended matter and other impurities from the water source entering the water tank 31; its T-shaped structure facilitates the collection and cleaning of impurities; the above-mentioned T-shaped filter pipe 23 is prior art, so it will not be described in detail in this application.

[0031] The control valve 22 is used to regulate or cut off the water flow, thereby controlling the amount and flow rate of water entering the water tank 31. The control valve 22 can be a manual valve, which is opened, closed or adjusted by manual operation; or it can be an electric valve or a pneumatic valve to achieve automated control. The control valve 22 is matched with the T-shaped filter pipe 23.

[0032] Water supply pipe 21 is a channel connecting control valve 22 to an external water source, ensuring that water tank 31 can continuously obtain the water source to be monitored.

[0033] Reference FIG. 2~FIG. 8 The water quality monitoring module 3 also includes a controller 32, which is fixedly installed on the outside of the water tank 31. An installation rod 34 is fixedly connected to the controller 32. The installation rod 34 penetrates the outer wall of the water tank 31 and extends into its interior. The monitor body 33 is fixed inside the water tank 31 by the installation rod 34.

[0034] It should be noted that the controller 32 is the core control unit of the water quality monitoring module 3. It is responsible for receiving the water quality data collected by the monitor body 33, processing and analyzing the data, and controlling the monitoring process according to the preset program. The controller 32 is fixedly installed on the outside of the water tank 31. This setting helps to protect the controller 32 from the influence of the water environment inside the water tank 31, ensure the stable operation of its electronic components and extend its service life, and also facilitates maintenance and troubleshooting. The mounting rod 34 serves as a support structure, providing a fixing point for the monitor body 33. The mounting rod 34 can be made of a material with sufficient rigidity and corrosion resistance. With the support of the mounting rod 34, the monitor body 33 can resist the impact of water flow and avoid monitoring errors caused by displacement. At the same time, the electrical connection between the monitor body 33 and the controller 32 is laid along the mounting rod 34.

[0035] Reference FIG. 2~FIG. 8 The monitor body 33 is composed of a rod 331 and a monitoring probe 332 fixedly connected to the rod 331, and the inner sleeve 511 is sleeved on the outside of the rod 331.

[0036] It should be noted that the monitoring probe 332 is the core sensing element of the water quality monitoring module 3. It is used to directly contact the water body and sense water quality parameters, including pH value, conductivity, dissolved oxygen, turbidity, etc. The monitoring probe 332 contains a sensitive element and a signal processing circuit, and its front end is exposed to the water flow for real-time measurement. The fixed connection between the monitoring probe 332 and the rod 331 can be achieved by various methods such as threaded connection, snap-fit ​​connection, glue sealing, or integral molding. These methods aim to ensure the firmness, sealing, and stability of the connection, prevent water from seeping in and damaging the internal circuit of the monitoring probe 332, and ensure the accuracy of the probe position, thereby improving the accuracy of the monitoring data.

[0037] Reference FIG. 2~FIG. 8 The inner wall of the outer sleeve 512 has a flow guiding surface 517, and the slit area 516 is defined by the flow guiding surface 517 and the outer wall of the inner sleeve 511.

[0038] It should be noted that the guide surface 517 is a surface provided on the inner wall of the outer sleeve 512 to guide the water flow. The guide surface 517 can be designed in various forms, such as a conical surface that gradually tapers towards the inner sleeve 511, or an arc surface with a specific curvature. Its main function is to guide and accelerate the water flow entering the slit area 516. The surface of the guide surface 517 is finely machined to ensure its smoothness, thereby minimizing water flow resistance. At the same time, the slit area 516 is the channel through which the water flow passes before finally forming an enveloping water film. Through the cooperation between the guide surface 517 and the outer wall of the inner sleeve 511, the geometry and size of the slit area 516 can be jointly determined to ensure that the water flow can be ejected with a preset flow rate, direction and uniformity when leaving the slit area 516, thereby forming a stable and sufficiently impactful enveloping water film on the outside of the monitor body 33.

[0039] Reference FIG. 2~FIG. 8 The drainage assembly 51 also includes an annular water-guiding cover 515, which is fixedly installed on the outside of the rod 331 and is connected to the water-guiding area.

[0040] It should be noted that the annular water intake cover 515 is fixedly installed on the outside of the outer shell by means of welding, bolt connection, snap-fit ​​connection, etc. This fixing method ensures that the relative position between the annular water intake cover 515 and the monitor body 33 is stable, thereby ensuring that the water flow can be accurately guided to the vicinity of the monitor body 33. The outlet end of the annular water intake cover 515 is connected to the inlet end of the diversion area 514 to form a continuous water flow channel, so as to ensure that the water flow can smoothly and unobstructedly enter the diversion area 514 from the annular water intake cover 515.

[0041] Reference FIG. 2~FIG. 8 An installation frame 4 is fixedly installed on the outer side of the annular water inlet cover 515, and the installation frame 4 is fixedly connected to the inner wall of the water tank 31.

[0042] Reference FIG. 2~FIG. 8 The drainage component 51 also includes a plurality of partitions 513 integrally formed with the outer sleeve 512. The plurality of partitions 513 are evenly arranged on the inner wall of the outer sleeve 512 along the circumferential direction, dividing the drainage area 514 into multiple parts.

[0043] It should be noted that the integral molding design of the baffle 513 and the outer sleeve 512 ensures the firmness and sealing of the connection between the baffle 513 and the outer sleeve 512. Several baffles 513 are evenly arranged on the inner wall of the outer sleeve 512 along the circumferential direction. This uniform arrangement is intended to initially homogenize and divert the water flow entering the diversion zone 514. By arranging the baffles 513 at equal intervals in the circumferential direction, it can be ensured that the water flow obtains a relatively consistent flow velocity and pressure distribution in each fan-shaped area of ​​the diversion zone 514 before entering the slit zone 516. This promotes the water flow to the slit zone 516 in a more stable and controlled manner, laying the foundation for the subsequent formation of a uniform enveloping water film.

[0044] Reference FIG. 2~FIG. 8 The controller 32 is electrically connected to the monitor body 33. The water tank 31 is fixedly installed with an inlet pipe 7 and an outlet pipe 6. The inlet pipe 7 is fixedly connected to the T-shaped filter pipe 23.

[0045] It should be noted that the inlet pipe 7 is the channel for guiding external water into the water tank 31, and the outlet pipe 6 is the channel for discharging water from the water tank 31. The arrangement of the inlet pipe 7 and the outlet pipe 6 enables the water tank 31 to achieve continuous or intermittent water sample renewal, ensuring that the monitor body 33 is always monitoring with fresh water samples, thereby improving the representativeness and accuracy of the monitoring.

[0046] Reference ​ The anti-cavitation part 5 also includes a diversion pipe 52, the two ends of which are fixedly connected to the water inlet pipe 7 and the annular water guide cover 515, respectively.

[0047] It should be noted that one end of the diversion pipe 52 is fixedly connected to the inlet pipe 7, which means that the diversion pipe 52 directly obtains water from the inlet pipe 7 of the water tank 31. The inlet pipe 7 is responsible for introducing external water into the water tank 31 through the T-shaped filter pipe 23. Therefore, by taking water directly from the inlet pipe 7 through the diversion pipe 52, it can be ensured that the diversion component 51 obtains a stable and sufficient water source, avoiding the impact of water flow fluctuations inside the water tank 31 on the water supply of the diversion component 51. By directly delivering the water flow to the annular water intake cover 515 through the diversion pipe 52, it can be ensured that the water flow is effectively guided and distributed before entering the diversion area 514, providing reliable initial conditions for the stable formation of the encapsulated water film.

[0048] During use, the raw water to be monitored in the main pipeline enters the control valve 22 through the water supply pipe 21. After being adjusted to the rated monitoring flow rate, it flows into the T-shaped filter pipe 23 to filter out large particles such as mud, sand and dead branches, preventing blockage of the subsequent diversion pipe 52 and the slit area 516. The filtered clean raw water flows continuously into the water tank 31 through the inlet pipe 7, filling the entire monitoring chamber.

[0049] The mounting rod 34 stably fixes the monitor body 33 in the center of the water tank 31. The monitoring probe 332 is in direct contact with the flowing water to be tested, and collects core water quality parameters such as pH, conductivity, dissolved oxygen, and turbidity in real time. The collected electrical signals are transmitted along the cable inside the mounting rod 34 to the controller 32 on the outside of the water tank 31. After the controller 32 completes data parsing and local storage, it is uploaded to the smart water management platform through the wireless communication module.

[0050] The high-pressure raw water in the inlet pipe 7 is simultaneously introduced into the annular water intake cover 515 through the diversion pipe 52. The natural pressure difference between the inlet pipe 7 and the diversion area 514 provides all the power, without the need for an additional motor drive. The water flow is evenly distributed to the inlet of the diversion area 514 in the entire circumferential direction through the annular water intake cover 515. It is divided into multiple independent diversion channels by the partitions 513 that are evenly distributed along the circumference, ensuring that the water pressure and flow rate in each channel are completely consistent.

[0051] The water flows downward along the diversion channel to the guide surface 517, and gradually accelerates under the action of the inward contraction of the guide surface 517. Finally, it is sprayed out from the slit area 516 along the axis of the monitor body 33 at a uniform flow rate, forming a continuous and stable enveloping water film on the outside of the rod 331 and the monitoring probe 332.

[0052] The axial water film forcibly separates the boundary layer between the main stream and the surface of the monitor body 33, disrupting the symmetrical shear flow conditions required for the formation of the Karman vortex street. This eliminates the stable low-pressure area behind the monitoring probe 332 from the source, preventing dissolved gases in the raw water from precipitating and forming bubbles. At the same time, the gradually sprayed water flow under the action of the inwardly contracting guide surface 517 can continuously flush the monitoring probe 332, preventing small and medium-sized impurities from corroding the monitoring probe 332. Thus, while eliminating the Karman vortex street effect, the self-cleaning of the monitoring probe 332 is achieved. After monitoring is completed, the raw water is discharged from the outlet pipe 6 at the bottom of the water tank 31.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A water quality monitoring device, characterized in that: include, Base (1); Water supply module (2), which is fixed on base (1); A water quality monitoring module (3) is connected to the water supply module (2) and fixed on the base (1). The water quality monitoring module (3) includes a water tank (31) and a monitor body (33). The water tank (31) is provided with an anti-cavitation part (5). The anti-cavitation part (5) includes... The diversion component (51) is connected to the water supply module (2). The diversion component (51) includes an inner sleeve (511) and an outer sleeve (512). The inner sleeve (511) is sleeved on the outside of the monitor body (33), and the outer sleeve (512) is sleeved on the outside of the inner sleeve (511). The inner sleeve (511) and the outer sleeve (512) form a diversion area (514) and a slit area (516) that are interconnected. The water flow from the water supply module (2) into the diversion area (514) flows out through the slit area (516) and forms a wrapping water film along the axial direction of the monitor body (33), which impacts and destroys the Karman vortex street effect on the outside of the monitor body (33).

2. The water quality monitoring equipment as described in claim 1, characterized in that: The water supply module (2) includes a T-shaped filter pipe (23) fixedly installed on the base (1). A control valve (22) is fixedly installed on the T-shaped filter pipe (23). The control valve (22) is connected to an external water source through the water supply pipe (21). The T-shaped filter pipe is connected to a water tank (31).

3. The water quality monitoring equipment as described in claim 2, characterized in that: The water quality monitoring module (3) also includes a controller (32), which is fixedly installed on the outside of the water tank (31). An installation rod (34) is fixedly connected to the controller (32). The installation rod (34) penetrates the outer wall of the water tank (31) and extends into its interior. The monitor body (33) is fixed inside the water tank (31) by the installation rod (34).

4. The water quality monitoring equipment as described in claim 3, characterized in that: The monitor body (33) consists of a rod (331) and a monitoring probe (332) fixedly connected to the rod (331), and the inner sleeve (511) is sleeved on the outside of the rod (331).

5. The water quality monitoring equipment as described in claim 4, characterized in that: The inner wall of the outer sleeve (512) has a flow guide surface (517), and the slit area (516) is defined by the flow guide surface (517) and the outer wall of the inner sleeve (511).

6. The water quality monitoring equipment as described in claim 5, characterized in that: The diversion assembly (51) also includes an annular water diversion cover (515), which is fixedly installed on the outside of the rod (331) and is connected to the water diversion area.

7. The water quality monitoring equipment as described in claim 6, characterized in that: An installation frame (4) is fixedly installed on the outside of the annular water intake cover (515), and the installation frame (4) is fixedly connected to the inner wall of the water tank (31).

8. The water quality monitoring equipment as described in claim 7, characterized in that: The drainage component (51) also includes several partitions (513) integrally formed with the outer sleeve (512). The partitions (513) are evenly arranged on the inner wall of the outer sleeve (512) along the circumferential direction, dividing the drainage area (514) into multiple parts.

9. The water quality monitoring equipment as described in claim 8, characterized in that: The controller (32) is electrically connected to the monitor body (33). An inlet pipe (7) and an outlet pipe (6) are fixedly installed on the outside of the water tank (31). The inlet pipe (7) is fixedly connected to the T-shaped filter pipe (23).

10. The water quality monitoring equipment as described in claim 9, characterized in that: The anti-cavitation part (5) also includes a diversion pipe (52), the two ends of which are fixedly connected to the water inlet pipe (7) and the annular water inlet cover (515) respectively.

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