An intelligent water flow sensor

Abstract

The invention discloses an intelligent water flow sensor, comprising a sensor housing, a flow stabilizing device arranged in the sensor housing, a sensing device arranged in the flow stabilizing device at one end close to the water outlet end of the sensor housing; the flow stabilizing device comprises a flow stabilizing tube, both ends of the flow stabilizing tube are connected with the water inlet and outlet ends of the sensor housing, an elastic membrane tube is arranged in the flow stabilizing tube, and the peripheries of both ends of the elastic membrane tube are connected with the inner peripheral wall of the flow stabilizing tube; an expansion component is arranged in the flow stabilizing tube at one end close to the water inlet end of the sensor housing; the expansion component can expand the inner diameter of the elastic membrane tube under the action of water pressure; by arranging the elastic membrane tube and the expansion component in the flow stabilizing tube, the water flow is blocked by the expansion component and the diameter of the elastic membrane tube is adaptively changed according to the water pressure, so that the detected water pressure tends to be stable, so as to suppress the turbulence of the water flow, thereby ensuring that the flow state tends to be laminar flow, thereby improving the accuracy of water flow measurement.

Description

Technical Field

[0001] The invention relates to the technical field of flow measurement, and in particular to an intelligent water flow sensor. Background Art

[0002] Water flow sensors (such as electromagnetic flowmeters) are key components in the fields of industrial automation, urban water supply, irrigation systems, and environmental monitoring. They are used to monitor and control the flow of water in real time to ensure the stability and efficiency of system operation.

[0003] However, in actual applications, the water flow velocity changes instantaneously, which causes the water flow to become unstable and the turbulence effect to increase, thereby greatly reducing the accuracy of the measurement results of the water flow sensor. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an intelligent water flow sensor. By arranging an elastic membrane tube and an expansion component in a flow stabilizing tube, the expansion component is used to block the water flow and the diameter of the elastic membrane tube is adaptively changed according to the water pressure, so that the detected water pressure tends to be stable, so as to suppress the turbulence of the water flow, thereby ensuring that the flow state tends to laminar flow, thereby improving the accuracy of water flow measurement.

[0005] To achieve the above object, the specific scheme of the present invention is as follows:

[0006] An intelligent water flow sensor comprises a sensor housing, a flow stabilizing device is arranged in the sensor housing, and a sensing device is arranged at one end of the flow stabilizing device close to the water outlet end of the sensor housing;

[0007] The flow stabilizing device includes a flow stabilizing tube, both ends of which are connected to the water inlet and outlet ends of the sensor housing, an elastic membrane tube is arranged inside the flow stabilizing tube, and the peripheries of both ends of the elastic membrane tube are connected to the inner circumferential wall of the flow stabilizing tube; an expansion component is arranged at one end of the flow stabilizing tube close to the water inlet end of the sensor housing; the expansion component can expand the inner diameter of the elastic membrane tube under the action of water pressure.

[0008] The present invention further comprises an expansion frame, wherein the expansion frame is evenly distributed with a plurality of sliding arms along the circumferential direction, and the sliding arms are fixedly connected to the inner wall of the flow stabilizing tube; each of the sliding arms is provided with a first permanent magnet penetrating into the elastic membrane tube, one end of the first permanent magnet is slidably connected to the sliding arm, and the other end of the first permanent magnet extends out of the elastic membrane tube;

[0009] The flow stabilizing device further comprises a second permanent magnet fixed on the outer peripheral wall of the flow stabilizing tube, and the magnetic properties of the second permanent magnet are the same as those of the first permanent magnet.

[0010] Furthermore, in the present invention, the first permanent magnet is connected to the inner wall of the elastic membrane tube.

[0011] The present invention further comprises a sliding groove on the sliding arm, and sliding holes are formed on the groove walls on opposite sides of the sliding groove along the length direction thereof; a first sliding platform is protruded from one end of the first permanent magnet, and the first sliding platform is slidably arranged in the sliding groove, and second sliding platforms are protruded from opposite sides of the first sliding platform, and the second sliding platform is slidably arranged in the sliding holes.

[0012] Furthermore, in the present invention, a limiting platform is protruded from the other end of the first permanent magnet.

[0013] Furthermore, in the present invention, both ends of the flow stabilizing tube are funnel-shaped.

[0014] In the present invention, the outer peripheral wall of the flow stabilizing pipe is provided with mounting platforms at both ends of the second permanent magnet.

[0015] The present invention further comprises a sensor device comprising a rotor movably arranged in a flow stabilizing tube and a coil support fixedly arranged in the flow stabilizing tube; rotating blades are evenly distributed on the outer peripheral wall of the rotor, and a gap is provided between the outer edge of the rotating blades and the inner wall of the flow stabilizing tube; a conical groove is recessed at one end of the rotor, a pair of magnetic pole pieces are arranged on the groove wall of the conical groove, and the magnetic pole pieces extend along the generatrix direction of the conical surface of the conical groove, a conical platform is protruded in the middle part of the coil support toward the rotor, the diameter of the conical platform gradually increases along the water flow direction, and a signal device and a first coil electrically connected to the signal device are arranged at the small end of the conical platform.

[0016] The present invention further comprises a third permanent magnet embedded in the bottom of the conical groove, and a fourth permanent magnet having the same magnetic property as the third permanent magnet embedded in the small end of the conical platform.

[0017] According to the present invention, the large end of the conical stage is provided with an alarm and a second coil electrically connected to the alarm.

[0018] The beneficial effects of the present invention are as follows: the present invention arranges an elastic membrane tube and an expansion component in the flow stabilizing tube, thereby utilizing the expansion component to block the water flow and adaptively changing the diameter of the elastic membrane tube according to the water pressure, so that the detected water pressure tends to be stable, thereby suppressing the turbulence of the water flow, thereby ensuring that the flow state tends to be laminar, thereby improving the accuracy of water flow measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional schematic diagram of the present invention when the rotor is in a first position;

[0020] Figure 2 is a cross-sectional schematic diagram of the present invention from another viewing angle when the rotor is in the first position;

[0021] Figure 3 is a cross-sectional schematic diagram of the present invention when the rotor is in the second position;

[0022] Figure 4 is a cross-sectional schematic diagram of the present invention when the rotor is in the third position;

[0023] Figure 5 It is a structural schematic diagram of the expansion frame of the present invention;

[0024] Figure 6 is a schematic structural diagram of the first permanent magnet of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the sensor device of the present invention;

[0026] Explanation of the reference numerals: 1. sensor housing; 21. flow stabilizing tube; 211. mounting platform; 22. elastic membrane tube; 231. expansion frame; 2311. sliding arm; 2312. sliding groove; 2313. sliding hole; 232. first permanent magnet; 2321. first slide; 2322. second slide; 2323. limiting platform; 24. second permanent magnet; 31. rotor; 311. rotating blade; 312. conical groove; 32. coil bracket; 321. conical platform; 33. magnetic pole piece; 34. signaler; 35. first coil; 36. third permanent magnet; 37. fourth permanent magnet; 38. alarm; 39. second coil. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0028] like Figures 1 to 7 As shown, an intelligent water flow sensor described in this embodiment includes a sensor housing 1, the upper end of the sensor housing 1 is a water outlet end, the upper end of the sensor housing 1 is provided with a water outlet pipe with a pipe diameter smaller than that of the sensor housing 1, the lower end of the sensor housing 1 is a water inlet end, the lower end of the sensor housing 1 is provided with a water inlet pipe with a pipe diameter smaller than that of the sensor housing 1, a flow stabilizing device is provided in the sensor housing 1, and a sensing device is provided in the flow stabilizing device at one end close to the water outlet end of the sensor housing 1;

[0029] The flow stabilizing device includes a flow stabilizing tube 21, both ends of which are connected to the water inlet and outlet ends of the sensor housing 1, and an elastic membrane tube 22 is arranged inside the flow stabilizing tube 21, and the peripheries of both ends of the elastic membrane tube 22 are connected to the inner circumferential wall of the flow stabilizing tube 21; an expansion component is provided at one end of the flow stabilizing tube 21 close to the water inlet end of the sensor housing 1; the expansion component can expand the inner diameter of the elastic membrane tube 22 under the action of water pressure.

[0030] Specifically, Figure 1 and Figure 2As shown, initially, the elastic membrane tube 22 is in a contracted state under the action of its own elasticity and the action of the expansion component, and the diameter of the elastic membrane tube 22 is the smallest; when the water flows through the water inlet pipe into the flow stabilizing tube 21, the expansion component blocks the water flow, disrupts the turbulence of the incoming water flow, and readjusts the flow of the water flow. Subsequently, the water flows into the elastic membrane tube 22, and the water pressure of the water flow generates a driving force on the expansion component, driving the expansion component to expand the inner diameter of the elastic membrane tube 22. The faster the water flow rate, the greater the kinetic energy, that is, the greater the driving force generated on the expansion component, so that the inner diameter of the elastic membrane tube 22 is expanded to a greater extent, as shown in FIG. Figure 3 As shown, the water flow enters the elastic membrane tube 22 and its flow velocity tends to be stable. The stabilized water flow flows out of the elastic membrane tube 22 and flows out from the outlet pipe of the sensor housing 1 after passing through the sensing device. At this time, the sensing device measures the water flow velocity.

[0031] In this embodiment, an elastic membrane tube 22 and an expansion component are arranged in the flow stabilizing tube 21, thereby utilizing the expansion component to block the water flow and adaptively changing the diameter of the elastic membrane tube 22 according to the water pressure, so that the detected water pressure tends to be stable, thereby suppressing the turbulence of the water flow, thereby ensuring that the flow state tends to be laminar, thereby improving the accuracy of water flow measurement.

[0032] like Figures 1 to 6 As shown, an intelligent water flow sensor described in this embodiment, in some embodiments, the expansion component includes an expansion frame 231, and the expansion frame 231 is evenly distributed with a plurality of sliding arms 2311 along the circumferential direction, and the sliding arms 2311 are fixedly connected to the inner wall of the flow stabilizing tube 21; each of the sliding arms 2311 is provided with a first permanent magnet 232 that penetrates into the elastic membrane tube 22, and the first permanent magnet 232 is in the shape of a long strip, one end of the first permanent magnet 232 is slidably connected to the sliding arm 2311, and the other end of the first permanent magnet 232 extends out of the elastic membrane tube 22; the flow stabilizing device also includes a second permanent magnet 24 fixed to the outer peripheral wall of the flow stabilizing tube 21, the magnetic properties of the second permanent magnet 24 are the same as those of the first permanent magnet 232, and the second permanent magnet 24 is in the shape of a circular tube. In the intelligent water flow sensor described in this embodiment, in some embodiments, the first permanent magnet 232 is connected to the inner wall of the elastic membrane tube 22; the first permanent magnet 232 can be fixed to the inner wall of the elastic membrane tube 22 by bonding.

[0033] Specifically, initially, each of the first permanent magnets 232 drives the elastic membrane tube 22 to be in a contracted state under the action of the magnetic repulsive force of the second permanent magnet 24; when the water flows into the voltage-stabilizing tube, the expansion frame 231 blocks the water flow, disrupts the turbulence of the incoming water flow, and readjusts the flow of the water flow. At this time, under the action of the water pressure of the water flow, each of the first permanent magnets 232 overcomes the magnetic repulsive force of the second permanent magnet 24 and drives the elastic membrane tube 22 to expand, thereby expanding the inner diameter of the elastic membrane tube 22, so that the water flow velocity tends to be stable in the elastic membrane tube 22, so that the sensing device can measure the water flow rate; in this way, the inner diameter of the elastic membrane tube 22 can be changed according to the water pressure, and the flow measurement of different water pressures can be adapted, thereby improving the accuracy of the flow measurement.

[0034] like Figures 1 to 6 As shown, in some embodiments of the intelligent water flow sensor described in this embodiment, a slide groove 2312 is provided on the slide arm 2311, and the groove walls on both sides of the slide groove 2312 are provided with slide holes 2313 along the length direction thereof; a first slide 2321 is convexly provided at one end of the first permanent magnet 232, and the first slide 2321 is slidably arranged in the slide groove 2312, and second slides 2322 are convexly provided on the opposite sides of the first slide 2321, and the second slide 2322 is slidably arranged in the slide hole 2313. In this embodiment, the slide groove 2312 is provided to cooperate with the first slide 2321, so that the movement of the first permanent magnet 232 is more stable, and the slide hole 2313 cooperates with the second slide 2322, so as to restrict the first permanent magnet 232, and prevent the first permanent magnet 232 from detaching from the slide arm 2311 under the action of water pressure, and the structure is more reliable to use.

[0035] like Figure 6 As shown, in the intelligent water flow sensor described in this embodiment, in some embodiments, a limit platform 2323 is convexly provided at the other end of the first permanent magnet 232. In this embodiment, the limit platform 2323 is provided to reliably drive the elastic membrane tube 22 to change its inner diameter.

[0036] like Figures 1 to 4 As shown, in some embodiments of the intelligent water flow sensor described in this embodiment, both ends of the flow stabilizing tube 21 are funnel-shaped. Specifically, the diameter of the end of the flow stabilizing tube 21 close to the water inlet end of the sensor housing 1 gradually increases along the water flow direction, and the diameter of the end of the flow stabilizing tube 21 close to the water outlet end of the sensor housing 1 gradually decreases along the water flow direction; such a configuration allows the water flow to smoothly transition when flowing through the flow stabilizing tube 21, preventing the water flow diversion phenomenon caused by the large difference in pipe diameters, and making the water flow more stable.

[0037] like Figures 1 to 4As shown, in the intelligent water flow sensor described in this embodiment, in some embodiments, the outer peripheral wall of the flow stabilizing tube 21 is provided with mounting platforms 211 at both ends of the second permanent magnet 24. In this embodiment, by providing the mounting platforms 211, the flow stabilizing tube 21 is more firmly installed in the sensor housing 1, and the structural reliability is higher.

[0038] like Figures 1 to 4 , Figure 7 As shown, an intelligent water flow sensor described in this embodiment, in some embodiments, the sensing device includes a rotor 31 movably arranged in the flow stabilizing tube 21 and a coil bracket 32 ​​fixedly arranged in the flow stabilizing tube 21; the outer peripheral wall of the rotor 31 is evenly distributed with rotating blades 311, and there is a gap between the outer edge of the rotating blades 311 and the inner wall of the flow stabilizing tube 21; a conical groove 312 is recessed at one end of the rotor 31, and a pair of magnetic pole pieces 33 are arranged on the groove wall of the conical groove 312, and the magnetic pole pieces 33 extend along the conical generatrix direction of the conical groove 312, and a conical platform 321 is convexly provided in the middle part of the coil bracket 32 ​​toward the rotor 31, and the diameter of the conical platform 321 gradually increases along the water flow direction, and the small end of the conical platform 321 is provided with a signal device 34 and a first coil 35 electrically connected to the signal device 34.

[0039] Specifically, at the beginning, Figure 1 and Figure 2 As shown, the bottom of the rotor 31 abuts against the upper end of the elastic membrane tube 22. At this time, the rotor 31 is in the first position. When the water flows out of the elastic membrane tube 22 after steady flow, the water pushes the rotor 31 to move toward the coil support 32, and drives the rotor 31 to rotate through the rotating blades 311. As the rotor 31 moves upward, the conical platform 321 of the coil support 32 is inserted into the conical groove 312 of the rotor 31. When the position of the pair of magnetic pole pieces 33 corresponds to the position of the first coil 35, as shown in FIG. Figure 3 As shown, at this time, the rotor 31 is in the second position. Since the magnetic pole piece 33 is in a rotating state, a magnetic induction current is generated on the first coil 35, thereby driving the signal device 34 to send a detection signal. The rotation speed of the rotor 31 is obtained according to the detection signal, and then the water flow velocity and flow rate are obtained, so that the flow sensor can effectively monitor and measure the water flow in the pipeline. In this embodiment, the conical groove 312 and the conical platform 321 are provided to limit the rotor 31 when it moves upward under the push of the water flow.

[0040] like Figures 1 to 4As shown, in some embodiments of the intelligent water flow sensor described in this embodiment, a third permanent magnet 36 is embedded in the bottom of the conical groove 312, and a fourth permanent magnet 37 having the same magnetic property as the third permanent magnet 36 is embedded in the small end of the conical platform 321. In this embodiment, by providing the third permanent magnet 36 and the fourth permanent magnet 37, when the conical platform 321 is inserted into the conical groove 312, the magnetic field force between the third permanent magnet 36 and the fourth permanent magnet 37 is utilized so that the conical surface of the conical platform 321 does not contact the conical surface of the conical groove 312, so that the rotor 31 forms a magnetic suspension state, so as to reduce the resistance of scale to the rotation of the rotor 31, and make the measurement result more precise.

[0041] like Figures 1 to 4 , Figure 7 As shown, in the intelligent water flow sensor described in this embodiment, in some embodiments, the large end of the conical platform 321 is provided with an alarm 38 and a second coil 39 electrically connected to the alarm 38. Specifically, under the magnetic field force between the third permanent magnet 36 and the fourth permanent magnet 37, the upward movement height of the rotor 31 is limited, so that the magnetic pole piece 33 does not correspond to the second coil 39, that is, the second coil 39 does not generate magnetic induction current, and the alarm 38 is in a non-working state; when the water flow pressure is too large, the thrust on the rotor 31 increases, so that the rotor 31 further overcomes the magnetic field force between the third permanent magnet 36 and the fourth permanent magnet 37 and moves upward, so that the magnetic pole piece 33 corresponds to the position of the second coil 39, as shown in FIG. Figure 4 As shown, at this time, the rotor 31 is in the third position, so that a magnetic induction current is generated on the second coil 39, driving the alarm 38 to generate an alarm signal to warn that the water pressure is too high, thereby reminding the user to reduce the water pressure to reduce the measurement error, and the structural reliability is higher.

[0042] The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. An intelligent water flow sensor, characterized in that: It comprises a sensor housing, wherein a flow stabilizing device is arranged in the sensor housing, and a sensing device is arranged in the flow stabilizing device at one end close to the water outlet end of the sensor housing; The flow stabilizing device comprises a flow stabilizing tube, the two ends of which are connected to the water inlet and outlet of the sensor housing, an elastic membrane tube is arranged inside the flow stabilizing tube, and the peripheries of the two ends of the elastic membrane tube are connected to the inner peripheral wall of the flow stabilizing tube; an expansion component is arranged at one end of the flow stabilizing tube close to the water inlet end of the sensor housing; the expansion component can expand the inner diameter of the elastic membrane tube under the action of water pressure; The expansion assembly includes an expansion frame, and the expansion frame is evenly distributed with a plurality of sliding arms along the circumferential direction, and the sliding arms are fixedly connected to the inner wall of the flow stabilizing tube; each of the sliding arms is provided with a first permanent magnet penetrating into the elastic membrane tube, one end of the first permanent magnet is slidably connected to the sliding arm, and the other end of the first permanent magnet extends out of the elastic membrane tube; The flow stabilizing device further comprises a second permanent magnet fixed on the outer peripheral wall of the flow stabilizing tube, and the magnetic properties of the second permanent magnet are the same as those of the first permanent magnet.

2. The intelligent water flow sensor according to claim 1, characterized in that: The first permanent magnet is connected to the inner wall of the elastic membrane tube.

3. The intelligent water flow sensor according to claim 1, characterized in that: A sliding groove is provided on the sliding arm, and sliding holes are provided on the groove walls on both sides opposite to each other along the length direction thereof; a first sliding platform is protruded from one end of the first permanent magnet, and the first sliding platform is slidably arranged in the sliding groove, and second sliding platforms are protruded from the opposite sides of the first sliding platform, and the second sliding platform is slidably arranged in the sliding holes.

4. The intelligent water flow sensor according to claim 1, characterized in that: A limiting platform is protruded from the other end of the first permanent magnet.

5. The intelligent water flow sensor according to claim 1, characterized in that: Both ends of the flow stabilizing tube are funnel-shaped.

6. The intelligent water flow sensor according to claim 1, characterized in that: The outer peripheral wall of the flow stabilizing tube is provided with mounting platforms at both ends of the second permanent magnet.

7. The intelligent water flow sensor according to claim 1, characterized in that: The sensing device includes a rotor movably arranged in a flow stabilizing tube and a coil support fixedly arranged in the flow stabilizing tube; rotating blades are evenly distributed on the outer peripheral wall of the rotor, and a gap is provided between the outer edge of the rotating blades and the inner wall of the flow stabilizing tube; a conical groove is recessed at one end of the rotor, and a pair of magnetic pole pieces are arranged on the groove wall of the conical groove, and the magnetic pole pieces extend along the generatrix direction of the conical surface of the conical groove; a conical platform is protruded in the middle part of the coil support toward the rotor, and the diameter of the conical platform gradually increases along the water flow direction, and a signal device and a first coil electrically connected to the signal device are arranged at the small end of the conical platform.

8. The intelligent water flow sensor according to claim 7, characterized in that: A third permanent magnet is embedded in the bottom of the conical groove, and a fourth permanent magnet having the same magnetic property as the third permanent magnet is embedded in the small end of the conical platform.

9. The intelligent water flow sensor according to claim 8, characterized in that: The large end of the conical platform is provided with an alarm and a second coil electrically connected to the alarm.

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