A liquid flow detection device

Abstract

This invention discloses a liquid flow detection device, including a detection valve, and further comprising: a U-shaped detection channel disposed within the detection valve; a dual-swing rod rotating assembly disposed in the middle of the U-shaped detection channel, blocking the channels on both sides of the U-shaped detection channel respectively; a rotation angle detection encoder connected to the dual-swing rod rotating assembly; two elastic sealing valve assemblies evenly distributed around the circumference of the axis of the dual-swing rod rotating assembly; a guide inclined surface disposed on the elastic sealing valve assembly; and a mechanical conversion assembly disposed between the rotation angle detection encoder and the elastic sealing valve assembly. This invention solves the problems of low detection accuracy, poor adaptability, and poor linkage between the two sides of existing liquid flow detection devices, providing a device capable of accurately detecting liquid flow under different operating conditions.

Description

Technical Field

[0001] This invention relates to the field of flow detection technology, and in particular to a liquid flow detection device. Background Technology

[0002] In industrial production, municipal water supply and drainage, and HVAC systems, accurate detection of liquid flow rate is crucial for stable system operation, energy consumption control, and fault diagnosis. Existing liquid flow rate detection devices have several limitations, such as impeller-type devices being susceptible to wear from impurities, electromagnetic devices requiring specific liquid conductivity, and ultrasonic devices experiencing accuracy degradation under complex operating conditions. Furthermore, most devices struggle to maintain the symmetry and consistency of bidirectional flow rate detection. When liquid flow conditions are complex, poor coordination between the two detection components can lead to increased errors, and their adaptability to liquids of varying viscosities is insufficient, affecting detection reliability.

[0003] Therefore, the existing technology for flow detection needs further improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a liquid flow detection device that solves the problems of low detection accuracy, poor adaptability, and poor linkage between the two sides of the existing liquid flow detection device, and provides a device that can accurately detect liquid flow under different working conditions.

[0005] To achieve the above objectives, the present invention adopts the following solution:

[0006] A liquid flow detection device includes a detection valve and further includes:

[0007] A U-shaped detection channel is provided inside the detection valve;

[0008] A dual-swing rod rotating assembly is positioned in the middle of the U-shaped detection channel, blocking the channels on both sides of the U-shaped detection channel respectively;

[0009] A rotation angle detection encoder is connected to the dual swing arm rotation assembly;

[0010] Two flexible sealing valve assemblies are evenly distributed around the circumference of the axis of the dual swing rod rotating assembly;

[0011] A guide ramp is provided on the elastic sealing valve assembly;

[0012] A mechanical conversion component is disposed between the rotation angle detection encoder and the elastic sealing valve assembly, for converting the compression stroke of the elastic sealing valve assembly into the rotation angle stroke of the rotation angle detection encoder;

[0013] The rheological sensing feedback component, linked with the dual swing rod rotation component and the elastic sealing valve component, is used to dynamically adjust the initial preload of the elastic sealing valve component according to changes in liquid viscosity.

[0014] Furthermore, the dual swing rod rotating assembly includes a rotor groove disposed in the middle of the U-shaped detection channel, a rotor is rotatably disposed in the rotor groove, and swing rods are respectively disposed on both sides of the rotor, with the two swing rods extending into the two side channels of the U-shaped detection channel respectively.

[0015] Furthermore, the U-shaped detection channel includes a left flow channel and a right flow channel, and a U-shaped flow channel is provided between the same end of the left flow channel and the right flow channel for connection. A middle partition is provided between the left flow channel and the right flow channel, and the rotor groove is provided on the middle partition.

[0016] Furthermore, the rotation angle detection encoder includes a rotary encoder disposed outside the detection valve, and the rotor end face is provided with a rotating shaft extending outside the detection valve, the rotating shaft being connected to the rotary encoder.

[0017] Furthermore, the resilient sealing valve assembly includes a transverse guide groove disposed on the intermediate partition, a movable blocking member is movably disposed within the transverse guide groove, and an elastic structure for pressing the movable blocking member outward is disposed between the movable blocking member and the transverse guide groove.

[0018] Furthermore, the two movable blocking elements are elastically sealed towards the left and right flow channels, respectively;

[0019] The movable blocking element located within the left flow channel is positioned below the swing arm on the corresponding side.

[0020] The movable blocking element located within the right flow channel is positioned above the swing rod on the corresponding side.

[0021] Furthermore, the guide ramp is disposed on the movable blocking member, and the two guide ramps are respectively disposed on one side of the water-facing surface of the movable blocking member.

[0022] Furthermore, the mechanical conversion assembly includes a hinge seat disposed on the outer end side wall of the swing rod, a connecting rod hinged to the hinge seat, a vertical guide groove provided on the side wall of the movable blocking member, and the connecting rod being movably installed in the vertical guide groove and arranged parallel to each other.

[0023] Furthermore, the rheological sensing feedback component includes a viscosity sensing sheet disposed on the inner wall of the U-shaped detection channel. The viscosity sensing sheet is connected to a magnetorheological fluid chamber disposed in the intermediate partition. The magnetorheological fluid chamber is provided with a spring compression control component that penetrates to the elastic structure of the elastic sealing valve assembly. When the viscosity sensing sheet senses a change in liquid viscosity, it changes the magnetic field strength in the magnetorheological fluid chamber, causing a corresponding change in the viscosity of the magnetorheological fluid to control the spring compression control component to adjust the preload of the elastic structure.

[0024] Furthermore, the connecting rod of the mechanical conversion assembly is made of magnetostrictive composite material, in which rare earth permanent magnet particles are uniformly distributed. A superconducting coil is embedded in the middle partition of the U-shaped detection channel. When the connecting rod moves with the elastic sealing valve assembly, the rare earth permanent magnet particles cut the magnetic field generated by the superconducting coil, causing the connecting rod to undergo slight expansion and contraction deformation. This deformation forms a nonlinear synergistic effect with the liquid flow rate, enhancing the sensitivity of the mechanical conversion assembly to the conversion from compression stroke to rotational angle stroke. Moreover, the magnetic field strength of the superconducting coil can be dynamically adjusted according to the electrical signal feedback from the rotational angle detection encoder.

[0025] In summary, the advantages of this invention over the prior art are:

[0026] This invention addresses the shortcomings of existing flow detection technologies. Through its structural design, it offers the following advantages: It improves the completeness and accuracy of flow detection. The movable blocking components on both sides sense the liquid pressure in the left and right flow channels respectively. A mechanical conversion component transmits the pressure signal to the corresponding swing rod, which together drives the same rotor to rotate. It detects the average pressure in both flow channels, avoiding errors caused by local flow disturbances in single-channel detection. This allows the electrical signal output by the rotation angle encoder to more accurately reflect the total flow rate. For example, when there is asymmetrical flow of liquid within the U-shaped channel, the synergistic effect of the components on both sides can offset unilateral deviations, ensuring the reliability of the detection results. The movable blocking components and swing rods on both sides form a symmetrical force structure through the rotor. The forces exerted by the liquid on both sides are balanced by the rotor, reducing component deformation, wear, or jamming caused by excessive force on one side. During periods of drastic flow fluctuations, this balancing mechanism reduces the vibration amplitude of the device, extends the service life of key components such as rotor slots and shafts, and ensures long-term operational stability. The two swing arms connected to the same rotor can respond synchronously to changes in flow rate. When the movable blocking component on one side opens due to increased flow, the rotation of the rotor will drive the swing arm on the other side to adjust synchronously, so that the flow space of the two flow channels changes in a coordinated manner, avoiding pressure surges or flow imbalances caused by lag in adjustment on one side. This synchronous adjustment capability is particularly important in bidirectional flow scenarios, effectively suppressing turbulence and ensuring the stability of liquid flow. Under complex conditions such as changes in liquid viscosity, pulsating flow, or brief reverse flow, the movable blocking components on both sides and the swing arms form a linkage feedback mechanism through the rotor. For example, when a high-viscosity liquid flows through, the resistance signals transmitted by the components on both sides are integrated by the rotor, enabling the rheological sensing feedback component to more accurately adjust the preload of the elastic structure; when impacted by pulsating flow, the coordinated action of both sides can smooth the interference of flow fluctuations on the detection signal, ensuring that the device can maintain high detection accuracy even in complex environments. Attached Figure Description

[0027] Figure 1 This is the front view of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the first state of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the second state of the present invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the present invention;

[0031] Figure 5 This is the left view of the present invention;

[0032] Figure 6 For the present invention Figure 5 Sectional view along line AA;

[0033] Figure 7 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-7 The present invention provides a liquid flow detection device, including a detection valve 1, and further comprising:

[0036] The U-shaped detection channel 2 is disposed inside the detection valve 1;

[0037] The dual swing rod rotating assembly 3 is located in the middle of the U-shaped detection channel 2, blocking the channels on both sides of the U-shaped detection channel 2 respectively;

[0038] The rotation angle detection encoder 4 is connected to the dual swing rod rotation assembly 3 and is used to convert the rotation angle signal of the dual swing rod rotation assembly 3 into an electrical signal.

[0039] Two elastic sealing valve assemblies 5 are evenly distributed around the circumference of the axis of the dual swing rod rotating assembly 3;

[0040] Guide slope 7 is provided on the elastic sealing valve assembly 5;

[0041] Mechanical conversion component 6 is disposed between the rotation angle detection encoder 4 and the elastic sealing valve assembly 5, and is used to convert the compression stroke of the elastic sealing valve assembly 5 into the rotation angle stroke of the rotation angle detection encoder 4;

[0042] The rheological sensing feedback component 8 is linked with the dual swing rod rotation component 3 and the elastic sealing valve component 5 to dynamically adjust the initial preload of the elastic sealing valve component 5 according to the change in liquid viscosity.

[0043] The liquid flows within the U-shaped detection channel 2, driving the double swing rod rotating assembly 3 to rotate, while simultaneously compressing the two elastic sealing valve assemblies 5. The mechanical conversion assembly 6 converts the compression stroke of the elastic sealing valve assembly 5 into the rotation angle stroke of the rotation angle detection encoder 4. The encoder converts the rotation angle signal into an electrical signal to achieve flow detection. The rheological sensing feedback assembly 8 dynamically adjusts the initial preload of the elastic sealing valve assembly 5 according to changes in liquid viscosity to adapt to the detection of liquids with different viscosities.

[0044] The dual-oscillating rod rotation assembly 3 of this invention includes a rotor groove 301 disposed in the middle of the U-shaped detection channel 2. A rotor 302 is rotatably disposed within the rotor groove 301. Oscillating rods 303 are respectively disposed on both sides of the rotor 302, and the two oscillating rods 303 extend into the two side channels of the U-shaped detection channel 2. In the dual-oscillating rod rotation assembly 3, the liquid flow in the U-shaped detection channel 2 exerts a force on the oscillating rods 303, causing the rotor 302 to rotate within the rotor groove 301, thereby converting the change in liquid flow rate into the rotational motion of the rotor 302, providing a mechanical basis for subsequent signal conversion.

[0045] The U-shaped detection channel 2 of this invention includes a left flow channel 201 and a right flow channel 202. A U-shaped flow channel 203 connects the left and right flow channels 201 and 202 at the same end. A middle partition 204 is provided between the left and right flow channels 201 and 202, and a rotor groove 301 is disposed on the middle partition 204. The left and right flow channels 201 and 202 of the U-shaped detection channel 2 are connected by the U-shaped flow channel 203, allowing liquid to flow within them. The middle partition 204 separates the two flow channels, and the rotor groove 301 on it provides installation and rotation space for the rotor 302 of the double swing rod rotating assembly 3, ensuring that the assembly can sense changes in liquid flow rate in both flow channels.

[0046] The rotary angle detection encoder 4 of this invention includes a rotary encoder 401 disposed outside the detection valve 1. A rotating shaft 402 extending beyond the detection valve 1 is disposed on the end face of the rotor 302, and the rotating shaft 402 is connected to the rotary encoder 401. When the rotor 302 of the dual-swing rod rotating assembly 3 rotates, it drives the rotary encoder 401 outside the detection valve 1 to rotate via the rotating shaft 402. The rotary encoder 401 converts the rotation angle signal of the rotor 302 into an electrical signal, thereby realizing the output of an electrical signal for flow detection.

[0047] The resilient sealing valve assembly 5 of the present invention includes a transverse guide groove 501 disposed on the intermediate partition 204. A movable blocking member 502 is movably disposed within the transverse guide groove 501. An elastic structure 503 is disposed between the movable blocking member 502 and the transverse guide groove 501 to press the movable blocking member 502 outward. In the resilient sealing valve assembly 5, the elastic structure 503 presses the movable blocking member 502 outward, forming a seal on the channel. When the pressure generated by the liquid flow is greater than the preload of the elastic structure 503, the movable blocking member 502 moves along the transverse guide groove 501, and its movement is related to the liquid flow rate, thereby converting the flow rate change into linear motion.

[0048] The two movable blocking members 502 of the present invention elastically seal the left flow channel 201 and the right flow channel 202 respectively.

[0049] The movable blocking member 502 located in the left flow channel 201 is positioned below the swing rod 303 on the corresponding side.

[0050] The movable blocking member 502 located in the right flow channel 202 is positioned above the swing rod 303 on the corresponding side.

[0051] Fluid enters from the right flow channel 202, triggering the movable blocking element 502 within it, and then flows to one end of the U-shaped detection channel 2. From the other end of the U-shaped detection channel 2, it flows to the left flow channel 201, triggering the movable blocking element 502 within the left flow channel 201. The two movable blocking elements 502 respectively form an elastic seal between the left and right flow channels 201 and 202. Liquid entering from the right flow channel 202 pushes the right movable blocking element 502 to move, flows through the U-shaped flow channel 203 to the left flow channel 201, and then pushes the left movable blocking element 502. Because the movable blocking elements 502 on both sides are positioned differently from the swing rod 303, their combined action causes the double swing rod rotating assembly 3 to rotate, thus detecting the liquid flow rate.

[0052] The guide ramp 7 of this invention is disposed on the movable blocking member 502, with two guide ramps 7 respectively disposed on one side of the water-facing surface of the movable blocking member 502. The guide ramp 7 on the water-facing surface of the movable blocking member 502 can decompose the impact force of the liquid into a force that pushes the movable blocking member 502 to move along the transverse guide groove 501, making the movable blocking member 502 easier to be pushed by the liquid and improving the response sensitivity to changes in flow rate.

[0053] The mechanical conversion component 6 of the present invention includes a hinge seat 601 disposed on the outer side wall of the swing rod 303, a connecting rod 602 hinged on the hinge seat 601, a vertical guide groove 603 disposed on the side wall of the movable blocking member 502, and the connecting rod 602 being movably installed in the vertical guide groove 603 and arranged parallel to each other.

[0054] When the movable blocking member 502 moves left and right, it will drive the corresponding vertical guide groove 603 to move left and right. When the vertical guide groove 603 moves left and right, it will drive the corresponding connecting rod 602 to move left and right synchronously. At this time, the connecting rod 602 will push the swing rod 303 to rotate by an angle through the hinge seat 601.

[0055] When the water flow rate is greater, the movable blocking member 502 opens to a greater extent, and the rotor 302 rotates more vigorously.

[0056] The two movable blocking elements 502 can detect the water flow pressure in the left flow channel 201 and the right flow channel 202, making the detection more accurate;

[0057] The movable blocking element 502 and the swing rod 303 on the same side can precisely adjust the flow space of the liquid. In the mechanical conversion assembly 6, the movement of the movable blocking element 502 drives the vertical guide groove 603 to move, which in turn drives the connecting rod 602 to move. The connecting rod 602 pushes the swing rod 303 to rotate through the hinge seat 601, converting the compression stroke of the movable blocking element 502 into the rotation angle of the swing rod 303. The larger the flow rate, the larger the opening position of the movable blocking element 502, and the larger the rotation angle of the rotor 302. The movable blocking elements 502 on both sides detect the pressure of the corresponding flow channel. The movable blocking element 502 and the swing rod 303 on the same side cooperate to adjust the flow space, improving the detection accuracy.

[0058] The rheological sensing feedback component 8 of this invention includes a viscosity sensing plate 801 disposed on the inner wall of the U-shaped detection channel 2. The viscosity sensing plate 801 is connected to a magnetorheological fluid chamber 802 disposed within the intermediate partition 204. The magnetorheological fluid chamber 802 is equipped with a spring compression control component 803 that extends through to the elastic structure 503 of the elastic sealing valve assembly 5. When the viscosity sensing plate 801 senses a change in liquid viscosity, it changes the magnetic field strength within the magnetorheological fluid chamber 802, causing a corresponding change in the magnetorheological fluid viscosity. This, in turn, controls the spring compression control component 803 to adjust the preload of the elastic structure 503. After sensing a change in liquid viscosity, the viscosity sensing plate 801 of the rheological sensing feedback component 8 changes the magnetic field strength within the magnetorheological fluid chamber 802, causing a corresponding change in the magnetorheological fluid viscosity. This, in turn, allows the spring compression control component 803 to adjust the preload of the elastic structure 503 in the elastic sealing valve assembly 5, adapting to the differences in the force exerted by liquids of different viscosities on the movable blocking element 502 and ensuring detection accuracy.

[0059] The connecting rod 602 of the mechanical conversion assembly 6 of this invention is made of magnetostrictive composite material, in which rare-earth permanent magnet particles are uniformly distributed. A superconducting coil is embedded in the intermediate partition 204 of the U-shaped detection channel 2. When the connecting rod 602 moves with the elastic sealing valve assembly 5, the rare-earth permanent magnet particles cut the magnetic field generated by the superconducting coil, causing the connecting rod 602 to undergo minute stretching deformation. This deformation forms a nonlinear synergistic effect with the liquid flow rate, enhancing the sensitivity of the mechanical conversion assembly 6 to the conversion from compression stroke to rotational angle stroke. Furthermore, the magnetic field strength of the superconducting coil can be dynamically adjusted based on the electrical signal feedback from the rotational angle detection encoder 4. The connecting rod 602 of the mechanical conversion assembly 6 is made of magnetostrictive composite material containing rare-earth permanent magnet particles, and a superconducting coil is embedded in the intermediate partition 204. When the connecting rod 602 moves with the elastic closed valve assembly 5, the rare earth permanent magnet particles cut the magnetic field generated by the superconducting coil, causing the connecting rod 602 to undergo a slight expansion and contraction deformation. This deformation forms a nonlinear synergistic effect with the liquid flow rate, enhancing the sensitivity of the conversion from compression stroke to rotational angle stroke. Furthermore, the magnetic field strength of the superconducting coil can be dynamically adjusted according to the electrical signal feedback from the rotational angle detection encoder 4, further optimizing the conversion performance.

[0060] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A liquid flow detection device, comprising a detection valve (1), characterized in that, It also includes: The U-shaped detection channel (2) is located inside the detection valve (1); The double swing rod rotating assembly (3) is located in the middle of the U-shaped detection channel (2) and blocks the channels on both sides of the U-shaped detection channel (2); The rotation angle detection encoder (4) is connected to the dual swing rod rotation assembly (3); Two flexible sealing valve assemblies (5) are evenly distributed around the circumference of the axis of the dual swing rod rotating assembly (3); Guide ramp (7) is provided on the elastic shut-off valve assembly (5); A mechanical conversion component (6) is disposed between the rotation angle detection encoder (4) and the elastic shut-off valve assembly (5) for converting the compression stroke of the elastic shut-off valve assembly (5) into the rotation angle stroke of the rotation angle detection encoder (4); The rheological sensing feedback component (8) is linked with the dual swing rod rotation component (3) and the elastic sealing valve component (5) to dynamically adjust the initial preload of the elastic sealing valve component (5) according to the change in liquid viscosity; The dual swing rod rotating assembly (3) includes a rotor groove (301) disposed in the middle of the U-shaped detection channel (2), a rotor (302) is rotatably disposed in the rotor groove (301), and swing rods (303) are respectively disposed on both sides of the rotor (302), and the two swing rods (303) extend to the two side channels of the U-shaped detection channel (2); The U-shaped detection channel (2) includes a left flow channel (201) and a right flow channel (202). A U-shaped flow channel (203) is provided between the left flow channel (201) and the right flow channel (202) at the same end for connection. A middle partition plate (204) is provided between the left flow channel (201) and the right flow channel (202). The rotor groove (301) is provided on the middle partition plate (204). The elastic sealing valve assembly (5) includes a transverse guide groove (501) disposed on the intermediate partition plate (204), a movable blocking member (502) is movably disposed in the transverse guide groove (501), and an elastic structure (503) for pressing the movable blocking member (502) outward is disposed between the movable blocking member (502) and the transverse guide groove (501). The mechanical conversion assembly (6) includes a hinge seat (601) disposed on the outer side wall of the swing rod (303), a connecting rod (602) is hinged on the hinge seat (601), a vertical guide groove (603) is provided on the side wall of the movable blocking member (502), and the connecting rod (602) is movably installed in the vertical guide groove (603) and is arranged parallel to each other; The rheological sensing feedback component (8) includes a viscosity sensing sheet (801) disposed on the inner wall of the U-shaped detection channel (2). The viscosity sensing sheet (801) is connected to a magnetorheological fluid chamber (802) disposed in the intermediate partition (204). The magnetorheological fluid chamber (802) is provided with a spring compression control component (803) that extends through the elastic structure (503) of the elastic sealing valve component (5). When the viscosity sensing sheet (801) senses the change in liquid viscosity, it will change the magnetic field strength in the magnetorheological fluid chamber (802), causing the magnetorheological fluid viscosity to change accordingly, so as to control the spring compression control component (803) to adjust the preload of the elastic structure (503).

2. The liquid flow detection device according to claim 1, characterized in that: The rotation angle detection encoder (4) includes a rotary encoder (401) disposed outside the detection valve (1), and the rotor (302) end face is provided with a rotating shaft (402) extending to the outside of the detection valve (1), and the rotating shaft (402) and the rotary encoder (401) are connected.

3. The liquid flow detection device according to claim 2, characterized in that: The two movable blocking elements (502) are elastically closed towards the left flow channel (201) and the right flow channel (202), respectively; The movable blocking member (502) located in the left flow channel (201) is positioned below the swing rod (303) on the corresponding side; The movable blocking element (502) located in the right flow channel (202) is positioned above the swing rod (303) on the corresponding side.

4. The liquid flow detection device according to claim 3, characterized in that: The guide ramp (7) is disposed on the movable blocking member (502), and the two guide ramps (7) are respectively disposed on one side of the water-facing surface of the movable blocking member (502).

5. A liquid flow detection device according to claim 4, characterized in that: The connecting rod (602) of the mechanical conversion component (6) is made of magnetostrictive composite material, in which rare earth permanent magnet particles are uniformly distributed. A superconducting coil is embedded in the middle partition (204) of the U-shaped detection channel (2). When the connecting rod (602) moves with the elastic sealing valve component (5), the rare earth permanent magnet particles cut the magnetic field generated by the superconducting coil, causing the connecting rod (602) to undergo a small stretching deformation. This deformation forms a nonlinear synergistic effect with the liquid flow rate, enhancing the sensitivity of the mechanical conversion component (6) to the conversion from compression stroke to rotation angle stroke. Furthermore, the magnetic field strength of the superconducting coil can be dynamically adjusted according to the electrical signal feedback from the rotation angle detection encoder (4).

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