Two-way detection fluid signal sensing device

Abstract

The utility model discloses a bidirectional detection fluid signal sensing device, which belongs to the field of liquid detection sensing devices, and comprises a pipe body and a shell, the shell is connected to the middle of the pipe body, the pipe body is connected with a connecting piece, a cavity is arranged between the pipe body and the connecting piece, a substrate is arranged in the middle of the pipe body, a flow guide cavity is arranged in the middle of the pipe body, and the flow guide cavity is connected with the shell. A rotating shaft positioning hole is formed in the shell and connected with a rotating shaft, the rotating shaft is connected with an impeller and a magnet, an impeller lower portion hole positioning ejector rod is arranged in the flow guide cavity, the middle of the impeller is connected with the top of the impeller lower portion hole positioning ejector rod, and a magnetic induction device is installed on the shell. The magnetic induction device is connected with an output signal line, and an upper space of the flow guide cavity is formed between the shell and the magnet. The device in the liquid adopts a magnetic induction principle for detection, can realize water and electricity separation, is suitable for various liquids, has high sensitivity, and can induct and output liquid flow signals when liquid flows slightly.

Description

Technical Field

[0001] This utility model belongs to the field of liquid detection sensing devices, and specifically relates to a bidirectional fluid signal sensing device. Background Technology

[0002] A water flow sensor is a water flow sensing instrument that outputs pulse signals, current, voltage, or other signals by sensing water flow. This signal output is linearly proportional to the water flow, with corresponding conversion formulas and comparison curves. Therefore, it can be used for water control management and flow calculation. In thermal applications, when used with a transducer, it can measure the energy loss of a medium over a period of time, such as in a heat meter. Water flow sensors are mainly used in conjunction with control chips, microcontrollers, and even PLCs. Water flow sensors offer accurate flow control, the ability to cyclically set the operating flow rate, water flow display, and cumulative flow calculation.

[0003] Chinese Patent CN201420077981.5 discloses a novel sensor capable of rapidly detecting liquid flow direction. The sensor includes a detection device and a sensing device. The detection device comprises a cavity and a movable float disposed within it. The cavity has an outlet and an inlet at its upper and lower ends, respectively. The movable float is suspended above the inlet, and its front end is conical. A conical surface is correspondingly provided at the upper end of the inlet. The sensing device is located outside the cavity. This device can conveniently monitor the flow direction of pulsating liquids and can monitor the volume of a single pulsating liquid, while also enabling unidirectional flow control of the liquid.

[0004] Chinese Patent CN201721827691.8 discloses a low-cost anti-backflow valve core liquid flow sensor device. The sensor device features a unidirectional, piston-like valve core with a magnetic sensor at its end and a spring surrounding the core. This unidirectional valve core sensor, with its simple piston-like structure, allows the valve core to move in the direction of water flow when there is flow. This invention can determine whether there is water flow in a pipeline and provides an electronic interface for use in other intelligent applications, improving the reliability and cost-effectiveness of determining water flow in water supply systems.

[0005] However, the aforementioned patent still has the following drawbacks, such as the inability to detect the direction of liquid flow in both directions, which limits the scope of application of the device. Summary of the Invention

[0006] The purpose of this invention is to provide a bidirectional fluid signal sensing device that can adapt to various fluids and increase the applicability of the device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model to solve the technical problem is as follows:

[0008] A bidirectional fluid signal sensing device includes a tube and a housing. The housing is connected to the middle of the tube. A connector is connected to the tube. A cavity is provided between the tube and the connector. A base plate is provided in the middle of the tube. A flow guiding cavity is provided in the middle of the tube. A shaft positioning hole is provided in the housing. A shaft is connected to the shaft positioning hole. An impeller and a magnet are connected to the shaft. A positioning rod for the lower hole of the impeller is provided in the flow guiding cavity. The middle of the impeller is connected to the top of the positioning rod for the lower hole of the impeller. A magnetic induction device is installed on the housing. The magnetic induction device is connected to an output signal line. An upper space of the flow guiding cavity is formed between the housing and the magnet.

[0009] Furthermore, the housing and the connector are connected by a leak-proof rubber sealing ring. When liquid enters the housing, the leak-proof rubber sealing ring prevents liquid from overflowing between the housing and the connector, thus providing a good seal.

[0010] Furthermore, the housing and the connector are connected by four bolts. These four bolts ensure a more stable connection between the housing and the connector, providing excellent reinforcement.

[0011] Furthermore, a protective cover is connected to the top of the housing. When dust or water falls onto the protective cover, the cover prevents dust or water from entering from above, providing good dust and water protection.

[0012] Furthermore, the left end of the pipe body is provided with an internal thread, and the right end of the pipe body is provided with an external thread. The device is connected to external equipment through the external and internal threads, which can effectively prevent fluid leakage and ensure the safety of the pipe body.

[0013] Furthermore, the substrate is provided with flow-stabilizing holes of varying sizes. These flow-stabilizing holes can regulate the liquid flow rate; larger holes allow for a larger flow rate, while smaller holes limit the flow rate, together stabilizing the liquid flow state and reducing fluctuations or turbulence.

[0014] Furthermore, the substrate is provided with assembly positioning grooves. These grooves are used to precisely position other components during assembly, ensuring that each component is aligned and fixed, thus guaranteeing the stability of the overall structure.

[0015] Furthermore, the substrate is provided with mounting and positioning holes. These holes are distributed at different locations on the substrate, providing multiple levels of fixing points and enhancing structural stability.

[0016] Furthermore, the substrate is provided with a flow stabilizing groove. The flow stabilizing groove further smooths the liquid flow, disperses the liquid kinetic energy through the groove structure, and reduces the possibility of sudden changes in flow velocity or eddies.

[0017] Furthermore, the substrate is provided with a flow guiding component. The flow guiding component guides the liquid to flow along a specific path, and changes the liquid direction through a specific shape (such as an arc or a slope) to optimize the sensitivity of bidirectional detection.

[0018] In practical applications, this invention is installed in a liquid-flowing pipeline. When liquid flows in the pipeline, the impeller drives the magnet to rotate, triggering a magnetic induction device (i.e., a magnetoelectric conversion device) to generate a corresponding liquid flow signal. After processing, the signal is output. The device stabilizes the flow rate through flow stabilizing holes and flow stabilizing channels, controls the flow path using flow guiding components, and ensures precise assembly of components through a positioning structure. The actuator then processes the signal according to the situation. The liquid inlet / outlet design, combined with bidirectional detection function, can determine the flow direction and signal changes.

[0019] The beneficial effects of this invention are: the device in the liquid uses the principle of magnetic induction for detection, which can realize the separation of water and electricity, is suitable for various liquids, has strong corrosion resistance, long service life, and high sensitivity, and can detect and output liquid flow signals with the slightest liquid flow. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0021] Figure 2 This is a top view of an embodiment of the present invention.

[0022] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model.

[0023] Figure 4 This is a top sectional view of an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the power supply used in conjunction with an embodiment of this utility model.

[0025] Figure 6 This is a schematic diagram of the sensing circuit of an embodiment of the present invention.

[0026] The symbols of the main components are explained as follows: 1. Guide cavity, 2. Pipe body, 3. Magnet, 4. Bolt, 5. Magnetic induction device, 6. Output signal line, 7. Protective cover, 8. Rotary shaft positioning hole, 9. Upper space of guide cavity, 10. Leak-proof rubber sealing ring, 11. Impeller, 12. Positioning rod of lower hole of impeller, 13. Housing, 14. Connector, 15. Cavity, 16. Internal thread, 17. External thread, 18. Flow stabilizing hole, 19. Assembly positioning groove, 20. Assembly positioning hole, 21. Flow stabilizing groove, 22. Guide component, 23. Base plate, 24. Detailed Implementation

[0027] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1-4 As shown, this utility model discloses a bidirectional fluid signal sensing device, comprising a tube body 2 and a housing 14. The housing 14 is connected to the middle of the tube body 2. A connector 15 is connected to the tube body 2, and a cavity 16 is provided between the tube body 2 and the connector 15. A base plate 24 is provided in the middle of the tube body 2. The base plate 24 has flow stabilizing holes 19 of different sizes. These flow stabilizing holes 19 can adjust the liquid flow rate. Larger flow stabilizing holes 19 allow larger flow rates to pass through, while smaller flow stabilizing holes 19 limit the flow rate. The flow stabilizing holes 19 of different sizes work together to stabilize the liquid flow state and reduce fluctuations or turbulence. The base plate 24 has an assembly positioning groove 20, which is used to accurately position other components during assembly, ensuring that each component is aligned and fixed, and guaranteeing the stability of the overall structure. The base plate 24 has assembly positioning holes 21, which are distributed at different positions on the base plate, providing multiple levels of fixing points and enhancing structural stability. The substrate 24 is provided with a flow stabilizing groove 22, which further smooths the liquid flow and disperses the liquid kinetic energy through the groove structure, reducing the possibility of sudden changes in flow velocity or eddies. The substrate 24 is provided with a flow guiding component 23, which can guide the liquid to flow along a specific path and change the liquid direction through specific shapes (such as arcs or slopes), thereby optimizing the sensitivity of bidirectional detection.

[0029] The tube body 2 has a flow guiding cavity 1 in the middle, and the housing 14 has a rotating shaft positioning hole 8. The rotating shaft 9 is connected to the rotating shaft positioning hole 8, and the impeller 12 and magnet 3 are connected to the rotating shaft 9. The flow guiding cavity 1 has a positioning rod 13 for the lower hole of the impeller. The middle of the impeller 12 is connected to the top of the positioning rod 13 for the lower hole of the impeller. A magnetic induction device 5 is installed on the housing 14 and is connected to an output signal line 6. The upper space 10 of the flow guiding cavity is formed between the housing 14 and the magnet 3. The device includes a sealed and leak-proof cavity 16, a liquid inlet and outlet on the flow guiding cavity 1, and an impeller 12 that rotates with the liquid flow in the flow guiding cavity 1. The impeller 12 has two magnets 3, which are permanent magnets and have the advantages of high efficiency and energy saving, small size and light weight, high precision and stability, and low maintenance cost. The magnetic induction device 5 is located outside the flow guiding cavity 1. The magnetic induction device 5 is a Hall element or a magnetic sensitive element. Hall effect sensors offer relatively high precision and resolution; magnetic sensors exhibit high sensitivity and fast response. The device comprises four magnetic sensing devices 5, which, along with two magnets 3, are positioned on parallel and adjacent circles with their centers on the same axis. The two magnets 3 and the four magnetic sensing devices 5 are located inside and outside the flow guiding cavity 1, respectively, and are isolated from each other. The housing 14 and the connecting piece 15 are tightly connected by a leak-proof rubber sealing ring 11 and four bolts 4 to prevent liquid leakage.

[0030] The through holes at both ends of the tube body 2 can serve as both liquid inlets and outlets, allowing the liquid to flow in either a clockwise or counterclockwise direction. In practical applications, this invention is installed in a liquid-flowing pipeline. When liquid flows within the pipeline, the impeller 12 drives the magnet 3 to rotate, triggering the magnetic induction device 5 (i.e., a magnetoelectric converter) to generate a corresponding liquid flow signal. After processing, the signal is output. The device stabilizes the flow velocity through flow stabilizing holes and channels, controls the flow path using the flow guiding component 23, and ensures precise assembly of components through a positioning structure. The actuator then processes the signal according to the situation. The liquid inlet / outlet design, combined with bidirectional detection functionality, can determine the flow direction and signal changes.

[0031] The beneficial effects of this invention are: the device in the liquid uses the principle of magnetic induction for detection, which can realize the separation of water and electricity, is suitable for various liquids, has strong corrosion resistance, long service life, and high sensitivity, and can detect and output liquid flow signals with the slightest liquid flow.

[0032] In this embodiment, the power supply used by the induction circuit is as follows: Figure 5 As shown, a 5V DC power supply is used. The 220V AC power supply is stepped down by R1 and C1, and then the pulsating DC voltage is output through a bridge rectifier circuit composed of D1, D2, D3, and D4. Finally, a stable 5V DC voltage is output through a filter and voltage regulator circuit composed of R2, DW, C2, and voltage regulator components.

[0033] Induction circuit such as Figure 6 As shown, its working principle is as follows: when the sensing surface of the Hall element receives a magnetic signal from the permanent magnet, it outputs an induced voltage signal through R3, C3 (or R4, C4 or R5, C5 or R6, C6). This signal changes with the rotation of the permanent magnet.

[0034] The above provides a detailed description of a bidirectional fluid signal sensing device provided by this utility model. The specific embodiments are described only to aid in understanding the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A bidirectional detection fluid signal sensing device, characterized by: The utility model provides a kind of water conservancy equipment, including pipe body (2) and shell (14), the shell (14) is connected in pipe body (2) middle part, connecting piece (15) is connected in the pipe body (2), cavity (16) is equipped between the pipe body (2) and connecting piece (15), base plate (24) is equipped in the pipe body (2) middle part, flow guide cavity (1) is equipped in the pipe body (2) middle part, shaft positioning hole (8) is equipped in the shell (14), shaft (9) is connected in the shaft positioning hole (8), impeller (12) and magnet (3) are connected in the shaft (9), impeller lower hole positioning jack (13) is equipped in the flow guide cavity (1), the impeller (12) middle part is connected with the top of impeller lower hole positioning jack (13), magnetic induction device (5) is installed on the shell (14), output signal line (6) is connected in the magnetic induction device (5), shell (14) and magnet (3) form flow guide cavity upper space (10) between.

2. A bidirectional sensing device for detecting a fluid signal as claimed in claim 1, wherein: The shell (14) and connecting piece (15) are connected with a leak-proof rubber sealing ring (11) therebetween.

3. A bidirectional sensing device according to claim 1, wherein: The shell (14) and connecting piece (15) are connected by bolts (4).

4. A bidirectional sensing device according to claim 1, wherein: The shell (14) is connected with a protective cover (7) on top.

5. The bidirectional fluid signal sensing device as described in claim 1, characterized in that: The left end of the pipe body (2) is provided with an internal thread (17), and the right end of the pipe body (2) is provided with an external thread (18).

6. A bidirectional sensing device according to claim 1, wherein: The base plate (24) is provided with a steady flow hole (19).

7. A bidirectional sensing device according to claim 1, wherein: The base plate (24) is provided with an assembly positioning groove (20).

8. A bidirectional sensing device according to claim 1, wherein: The base plate (24) is provided with an assembly positioning hole (21).

9. The bidirectional sensing fluid signal device of claim 1, wherein: The base plate (24) is provided with a steady flow groove (22).

10. The bidirectional fluid signal sensing device of claim 1, wherein: The base plate (24) is provided with a flow guide component (23).

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