A turbine flowmeter capable of changing the direction of the outlet

Abstract

This utility model relates to the field of energy storage and fire protection technology, and discloses a turbine flow meter capable of changing the outlet direction. It includes a magnetoelectric induction component, which further includes a conductive component electrically connected to the magnetoelectric induction component. The conductive component is electrically connected to and rotates relative to the outlet component via a circular conductive mechanism to adjust the outlet direction of the outlet component. An anti-loosening fixing component is disposed at the connection position between the conductive component and the outlet component, forming a ratchet positioning mechanism to lock the relative position of the conductive component and the outlet component. This utility model uses a rotatably connected outlet component and conductive component to change the outlet direction of the outlet component, reducing the wire length, lowering circuit resistance, reducing induced current loss, and improving the accuracy of turbine speed. Furthermore, the anti-loosening fixing component, through the ratchet positioning mechanism, fixes the rotation angle of the outlet component relative to the conductive component, and fixes the axial and radial degrees of freedom between them, thereby stabilizing the stability of the outlet direction.

Description

Technical Field

[0001] This utility model relates to the field of energy storage and fire protection technology, specifically to a turbine flow meter capable of changing the direction of the outgoing line. Background Technology

[0002] In energy storage fire protection systems, flow valves are key components for achieving precise control and rapid response of the extinguishing medium. Turbine flow meters, as their core measuring unit, are typically installed directly inside the valve body piping to monitor the flow status of the extinguishing agent (such as perfluorohexanone, water-based solutions, etc.) in real time. The turbine flow meters are installed at both ends of the valve body piping to measure the fluid velocity at the inlet and outlet of the flow valve. The magneto-electric transducer is the core signal conversion component of the turbine flow meter, responsible for converting the impeller's rotational frequency into electrical pulse signals.

[0003] Currently, turbine flow meters used in this field have two significant technical drawbacks: First, the output direction of magneto-electric converters is usually fixed and cannot be adjusted according to on-site installation requirements. When turbine flow meters are installed at both ends of the valve body pipeline, the cables need to be led out from a specific direction and converge at the central electrical box. The inability to adjust the output direction makes wiring difficult, often resulting in problems such as cable twisting, excessive bending, or inability to route the cables nearby. This not only affects installation efficiency and aesthetics but may also cause cable damage due to installation stress, affecting the reliability of signal transmission.

[0004] Secondly, in an effort to overcome the aforementioned problems, some improved designs have attempted to introduce rotatable outgoing cable interfaces. However, when the energy storage fire protection system is activated, the high-pressure, high-speed extinguishing medium violently impacts the turbine blades, causing strong and continuous hydraulic vibrations within the pipes and valves. This vibration can cause the rotating structure of the outgoing cable interface to loosen, resulting in a positional shift of the directional outgoing cable interface along its axis. This causes the direction of the outgoing cable interface to change frequently, leading to high-frequency oscillation of the wires passing through the outgoing cable interface. This can result in repeated bending and damage, unstable or even failed electrical connections, ultimately causing the entire fire protection system to fail. Utility Model Content

[0005] This invention addresses the problems of difficulty in changing the outlet direction and easy oscillation of the outlet interface in turbine flow meters by providing a turbine flow meter capable of changing the outlet direction. The specific technical solution is as follows: A turbine flow meter capable of changing the outlet direction includes a turbine disposed within a valve body pipe and a magnetic sensing element for sensing turbine rotation. The flow meter includes a magnetoelectric sensing component for detecting turbine rotation speed. The magnetoelectric sensing component further includes: a conductive element electrically connected to the magnetic sensing element; the conductive element is electrically connected to and rotates relative to an outlet component via a circular conductive mechanism to adjust the outlet direction of the outlet component; and an anti-loosening fixing component disposed at the connection position between the conductive element and the outlet component, the anti-loosening fixing component forming a ratchet positioning mechanism to lock the relative position of the conductive element and the outlet component.

[0006] Furthermore, the conductive component includes a first conductive ear electrically connected to the magnetic induction component, the first conductive ear being electrically connected to a first plug ear, the first plug ear being electrically connected to a first concentric ring, the first concentric ring forming a first conductive ring that is concentrically arranged and mutually insulated; the outgoing component includes a second concentric ring, the second concentric ring forming a second conductive ring that is concentrically arranged and mutually insulated, the second conductive ring of the inner ring and the second conductive ring of the outer ring being electrically connected to the first conductive ring of the inner ring and the first concentric ring of the outer ring, respectively, the first concentric ring and the second concentric ring forming a circular conductive mechanism, so that the second concentric ring can rotate relative to the first concentric ring.

[0007] Furthermore, the anti-loosening fastener includes a hollow ratchet that is insulated from and connected to the second concentric ring and the first concentric ring. The hollow ratchet is provided with an annular spring in the circumference of the hollow ratchet. The annular spring forms an elastic snap, and the elastic snap of the annular spring is embedded in the tooth groove of the hollow ratchet to form a ratchet positioning mechanism.

[0008] Preferably, the magnetic sensing element includes a magnetic sensing probe for electromagnetic induction with the turbine and a housing for housing the magnetic sensing probe. The housing forms a cavity for housing the conductive element, and the housing is connected to the output element to seal the cavity.

[0009] Preferably, the anti-loosening fastener also includes a clamp connecting the cable outlet and the housing. The clamp is a split structure, with an annular groove formed inside the clamp and an annular protrusion formed on the outer surfaces of the cable outlet and the housing. The protrusions can be embedded in the groove to constrain the axial and radial degrees of freedom of the cable outlet and the housing relative to the clamp.

[0010] Preferably, the first concentric ring and the second concentric ring are coaxially arranged, and the outer conductive ring one is insulated from the inner conductive ring two, and the inner conductive ring one is insulated from the outer conductive ring two.

[0011] Preferably, the output component further includes an output box connected to the housing of the magnetic induction component, with a second conductive lug penetrating through the bottom of the output box, forming a through output interface, and the second conductive lug being electrically connected to the second concentric ring to allow current to flow to the output interface.

[0012] Preferably, it also includes an electrical box electrically connected to the outlet interface of the outlet component; the turbines are respectively placed at both ends of the valve body pipe, the magnetoelectric induction components detect the rotational speed of the turbines at the corresponding positions, and the electrical box is placed in the middle of the magnetoelectric induction components so that the detection current or detection signal is transmitted to the electrical box.

[0013] As can be seen from the above technical solution, this utility model has the following beneficial effects: This utility model features a rotating connection between a lead-out component and a conductive component to change the lead-out direction of the lead-out component, reduce the wire length, lower the circuit resistance, reduce induced current loss, and improve the accuracy of turbine speed. Secondly, the anti-loosening fixing component uses a ratchet positioning mechanism to fix the rotation angle of the lead-out component relative to the conductive component, as well as to fix the axial and radial degrees of freedom between the two, thereby stabilizing the stability of the lead-out direction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model installed at both ends of the flow valve; Figure 2 This is a schematic diagram of the structure of an embodiment of the present invention, which is installed at both ends of the valve body pipeline. Figure 3 This is a schematic diagram of the exploded structure of a magnetoelectric induction component; Figure 4 A schematic diagram of the structure for installing the anti-loosening fastener on the outgoing cable component; Figure 5 for Figure 1 A partial sectional view; Figure 6 for Figure 5 Enlarged view of the structure at point A in the image.

[0015] In the diagram: 1. Magnetoelectric induction assembly; 11. Magnetic sensing element; 111. Magnetic sensing probe; 112. Housing; 12. Conductive element; 121. First conductive ear; 122. First plug-in ear; 123. First concentric ring; 13. Outgoing cable; 131. Second concentric ring; 132. Second conductive ear; 133. Outgoing cable box; 134. Outgoing cable interface; 135. End cap; 14. Anti-loosening fastener; 141. Hollow ratchet; 142. Ring spring; 143. Clamp; 2. Turbine; 3. Mounting bracket; 4. Electrical box; 5. Valve body pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figure 1 and Figure 2 As shown, this embodiment is a turbine flow meter capable of changing the outlet direction. The turbine flow meter includes a turbine 2 disposed in the valve body pipe 5 and a magnetic sensing element 11 for sensing the rotation of the turbine 2. The magnetoelectric induction assembly 1 includes the magnetic sensing element 11.

[0019] Specifically, in the energy storage fire protection system, the flow valve forms a valve body pipe 5, inside which a turbine 2 is installed via a mounting bracket 3. The fire protection liquid flows through the valve body pipe 5 and impacts the turbine 2 to drive the turbine 2 to rotate. Secondly, the turbine 2 in the existing turbine flow meter rotates to cut the magnetic field generated by the magnetic sensing element 11 (corresponding to the permanent magnet magnetic field generated by the magnetoelectric induction converter in the prior art), thereby generating an induced current. The magnetoelectric induction component 1 can detect the rotational speed of the turbine 2 by analyzing this induced current.

[0020] Furthermore, this embodiment also includes an electrical box 4 electrically connected to the outlet interface 134 of the outlet component 13; the turbines 2 are respectively placed at both ends of the valve body pipe 5, the magnetoelectric induction component 1 detects the rotational speed of the turbines 2 at the corresponding positions, and the electrical box 4 is placed in the middle position of the magnetoelectric induction component 1 so that the detection current or detection signal is transmitted to the electrical box 4.

[0021] Specifically, rotating turbines 2 are provided at both ends of the valve body pipe 5, and magnetoelectric induction components 1 are provided at both ends of the turbines 2. The magnetoelectric induction components 1 are electrically connected to the electrical box 4 in the middle position, so that the induced current generated by the magnetoelectric induction components 1 can flow into the electrical box 4 for processing. Thus, the electrical box 4 can process the induced current generated by the magnetoelectric induction components 1 at both ends at the same time, reducing the structural complexity of this embodiment. Secondly, the wire outlet 13 rotates relative to the magnetic induction component 11 to change the wire outlet direction of the wire outlet 13, so that the wire outlet directions at both ends are opposite and both point to the electrical box 4 in the middle position, reducing the wire length, reducing the circuit resistance, and avoiding wire bending and deformation.

[0022] like Figure 3 and Figure 4As shown, the turbine flow meter also includes a magnetoelectric induction component 1 for detecting the rotational speed of the turbine 2. The magnetoelectric induction component 1 further includes: a conductive component 12 electrically connected to the magnetic sensing component 11, the conductive component 12 being electrically connected to and rotating relative to the outlet component 13 through a circular conductive mechanism to adjust the outlet direction of the outlet component 13; and an anti-loosening fixing component 14 disposed at the connection position between the conductive component 12 and the outlet component 13, the anti-loosening fixing component 14 forming a ratchet positioning mechanism to lock the relative position of the conductive component 12 and the outlet component 13.

[0023] Specifically, the right end of the magnetic induction element 11 is close to the turbine 2, causing it to generate an induced current. This induced current flows to the left, sequentially through the conductive element 12 and the output element 13. Secondly, the conductive mechanism between the conductive element 12 and the output element 13 is a circular conductive mechanism. This mechanism conducts the induced current through interconnected circular rings. When the output element 13 rotates relative to the conductive element 12, the circular rings remain connected, allowing the output direction of the output element 13 to change relative to the conductive element 12. The conductive element 12 is fixed relative to the valve body pipe 5, allowing the output direction of the output element 13 to change relative to the valve body pipe 5. Furthermore, the output element 13 rotates relative to the conductive element 12... During the process, the ratchet positioning mechanism evenly divides its rotation circumference into several limiting points, with an angle α between adjacent limiting points. These limiting points can restrict the position of the outlet component 13, thereby restricting its rotation relative to the conductive component 12 to maintain their relative fixation. This ensures that the wire passing through the outlet interface 134 remains fixed relative to the valve body pipe 5, thus preventing the wire from repeatedly bending at the outlet interface 134 in a high-vibration working environment, which could lead to fatigue fracture of the internal metal of the wire and fatigue cracking of its external insulation material. This would result in unstable electrical connection, causing the turbine flow meter to measure the turbine 2 speed discontinuously and making the results inaccurate.

[0024] Secondly, the operator applies a rotational torque to the outlet component 13 to counteract the resistance torque applied to the outlet component 13 by the limiting point, so that the outlet component 13 can rotate relative to the conductor component in integer multiples of α, thereby adjusting the direction of the outlet interface 134 relative to the valve body pipe 5.

[0025] Furthermore, the conductive element 12 includes a first conductive ear 121 electrically connected to the magnetic induction element 11. The first conductive ear 121 is electrically connected to a first plug ear 122. The first plug ear 122 is electrically connected to a first concentric ring 123. The first concentric ring 123 forms a first conductive ring that is concentrically arranged and mutually insulated. The output element 13 includes a second concentric ring 131. The second concentric ring 131 forms a second conductive ring that is concentrically arranged and mutually insulated. The second conductive rings of the inner and outer rings are electrically connected to the first conductive rings of the inner and outer rings, respectively. The first concentric ring 123 and the second concentric ring 131 form a circular conductive mechanism so that the second concentric ring 131 can rotate relative to the first concentric ring 123.

[0026] Specifically, the two first conductive ears 121 are welded and fixed to the positive and negative poles of the magnetic induction element 11 respectively to form the positive and negative poles of the induced current. Both first plug ears 122 form elastic clamping structures, allowing the first conductive ears 121 to be inserted into the first plug ear 122 to achieve electrical connection. The first concentric ring 123 forms two conductive rings of different diameters that are insulated from each other. The conductive rings of different diameters are welded and fixed to the two first plug ears 122 respectively, so that the conductive ring located in the inner or outer ring respectively forms the positive and negative poles of the induced current; secondly, the second concentric ring 131 and... The first concentric ring 123 is identical. The first and second conductive rings on the outer ring are in contact with each other to form an electrical connection, and the first and second conductive rings on the inner ring are in contact with each other to form an electrical connection. Thus, the second conductive ring on the inner or outer ring forms the positive and negative poles of the induced current, respectively. The second concentric ring 131 and the first concentric ring 123 are in contact with each other through their opposite end faces and form a rotational connection. This ensures that during the rotation of the second concentric ring 131 relative to the first concentric ring 123, the second conductive ring on the outer or inner ring and the corresponding conductive ring on the inner ring are always connected, and the positive and negative pole positions remain unchanged.

[0027] Secondly, the second conductive ear 132 is electrically connected to the second concentric ring 131 to form the positive and negative poles of the induced current. The second conductive ear 132 and the second concentric ring 131 are both fixedly connected to the output member 13, so that the output direction of the output member 13 can rotate relative to the first concentric ring 123 and the magnetic induction member 11 without affecting the current connection state.

[0028] Secondly, the first plug ear 122 and the first conductive ear 121 are connected by an elastic clamping structure, which is the same as the connection structure of existing sockets and plugs. This allows the first plug ear 122 and the first conductive ear 121 to be quickly connected or separated, and the first concentric ring 123 to be quickly connected or separated, making it easy to replace the first concentric ring 123 or the magnetic induction element 11.

[0029] Furthermore, the anti-loosening fastener 14 includes a hollow ratchet 141 that is insulated from and connected to the second concentric ring 131 and the first concentric ring 123. The hollow ratchet 141 is circumferentially provided with an annular spring 142, which forms an elastic snap. The elastic snap of the annular spring 142 is embedded in the tooth groove of the hollow ratchet 141 to form a ratchet positioning mechanism.

[0030] Specifically, the anti-loosening fastener 14 is placed between the first concentric ring 123 and the second concentric ring 131. The hollow ratchet 141 is fixedly connected to the second concentric ring 131. A through hole is formed in the middle of the hollow ratchet 141. The inner diameter of the through hole is larger than the outer diameter of the second concentric ring 131, so that the two are placed apart and not connected. Secondly, the inner diameter of the through hole is larger than the outer diameter of the first concentric ring 123, so that the first concentric ring 123 is embedded and placed apart and not connected. Thus, the first concentric ring 123 and the second concentric ring 131 are connected, but neither is connected to the hollow ratchet 141. The hollow ratchet 141 and the second concentric ring 131 rotate relative to the first concentric ring 123 at the same time. Secondly, the annular spring 142 is relative to the first concentric ring 123. With the first concentric ring 123 fixed in place, the second concentric ring 131 and the hollow ratchet 141 can rotate relative to the annular spring 142. The annular spring 142 is formed by an elastic metal sheet surrounding the outer surface of the hollow ratchet 141, and the first or last end forms an elastic buckle at the contact position between the two. The elastic buckle is embedded in the tooth groove of the hollow ratchet 141, restricting the rotation of the hollow ratchet 141 relative to the annular spring 142, thereby restricting the rotation of the second concentric ring 131 relative to the first concentric ring 123, thereby restricting the rotation of the lead wire 13 relative to the first concentric ring 123, thereby restricting the rotation of the lead wire 13 relative to the magnetic induction element 11, thereby fixing the lead wire direction of the lead wire 13 and preventing the wire from repeatedly swinging and bending under high-frequency vibration.

[0031] Secondly, the annular spring 142 is not connected at either end; the first or last end forms an elastic latch at the contact position, while the other end is a free end. When the operator rotates clockwise ( Figure 4 When the hollow ratchet 141 is rotated clockwise, the torque applied by the operator is greater than the resistance torque exerted by the elastic latch on the tooth groove. The elastic latch moves towards the free end of the annular spring 142, separating it from the tooth groove of the ratchet, allowing the ratchet to rotate relative to the annular spring 142. When the operator rotates counterclockwise... Figure 4 When the hollow ratchet 141 is rotated counterclockwise, the elastic buckle abuts against the tooth groove side of the ratchet, preventing the hollow ratchet 141 from moving relative to the annular spring 142. This allows the hollow ratchet 141 to rotate only in one direction under the action of external force, thereby ensuring that the wire outlet direction of the wire outlet component 13 can only rotate in one direction under the action of external force from the operator, thus preventing it from swinging repeatedly.

[0032] Furthermore, the magnetic sensing element 11 includes a magnetic sensing probe 111 for electromagnetic induction with the turbine 2 and a housing 112 for placing the magnetic sensing probe 111. The housing 112 forms a cavity for placing the conductive element 12. The housing 112 is connected to the outgoing wire element 13 to seal the cavity.

[0033] Specifically, as is known from common knowledge in the field, the magnetic sensor 111 includes a permanent magnet and a coil. During the rotation of the turbine 2, the permanent magnet is cut to induce an electromotive force in the coil. The two ends of the coil are electrically connected to the first conductive lug 121, so that the first conductive lug 121 forms positive and negative poles. Secondly, the outer shell 112 forms a stepped shaft, with its small diameter end close to the turbine 2 and its diameter gradually increasing in the direction away from the turbine 2. The end close to the turbine 2 is threaded, which can form a threaded connection with the through hole of the flow valve where the magnetic sensor 111 is placed, so that the side wall of the valve body pipe 5 is not connected to the outside, thus avoiding leakage of fire-fighting liquid. Furthermore, the cavity inside the outer shell 112 houses the conductive component 12. The end of the outer shell 112 away from the turbine 2 is rotatably connected to the outlet component 13 through the anti-loosening fixing component 14, so that when the first concentric ring 123 rotates relative to the outlet component 13, the cavity of the outer shell 112 remains sealed, preventing external dust from entering the cavity and adsorbing on the connection surface of the first concentric ring 123 and the second concentric ring 131, affecting the conductivity of both.

[0034] Furthermore, the anti-loosening fastener 14 also includes a clamp 143 connecting the cable outlet 13 and the housing 112. The clamp 143 is a split structure, with an annular groove formed inside the clamp 143. Both the cable outlet 13 and the housing 112 have annular protrusions on their outer surfaces. The protrusions can be embedded in the groove to constrain the axial and radial degrees of freedom of the cable outlet 13 and the housing 112 relative to the clamp 143.

[0035] Specifically, the clamp 143 is composed of two half-clamps 143 spliced ​​together, and the two are fixedly connected by bolts to form a complete annular clamp 143. Secondly, the depth of the groove inside the clamp 143 is not less than the protrusion height of the cable outlet 13, and the protrusion height of the cable outlet 13 is the same as the protrusion height of the outer shell 112. The width of the groove (the circumference of the clamp 143 is the width direction) is not less than the sum of the protrusion width of the cable outlet 13 and the protrusion width of the outer shell 112, so that the protrusions of both the cable outlet 13 and the outer shell 112 can be embedded in the groove inside the clamp 143, thereby making the cable outlet 13 and the outer shell 112 relatively... The clamp 143 is fixed, but it does not affect the rotation of the outlet component 13 and the outer casing 112 about the clamp 143 to change the outlet direction; secondly, the end of the outer casing 112 near the valve body pipe 5 is threaded, so that it forms a threaded connection with the valve body pipe 5, so that the outer casing 112 is fixed relative to the valve body pipe 5, thereby fixing the clamp 143 relative to the outer casing 112, and fixing the clamp 143 relative to the magnetic induction component 11 and the valve body pipe 5, so that when the outlet component 13 rotates relative to the outer casing 112, the clamp 143 will not rotate with it, ensuring the sealing and stability of the connection position between the outlet component 13 and the outer casing 112.

[0036] Furthermore, the output component 13 also includes an output box 133 connected to the housing 112 of the magnetic induction component 11. The bottom of the output box 133 extends through the second conductive ear 132, and the output box 133 forms a through output interface 134. The second conductive ear 132 is electrically connected to the second concentric ring 131 to allow current to flow to the output interface 134.

[0037] Specifically, the outlet box 133 and the outer casing 112 are connected by a clamp 143. A second concentric ring 131 and a first concentric ring 123 are connected between them. The second concentric ring 131 is connected to the second conductive ear 132, forming the positive and negative poles of the induced current. The wire passing through the outlet interface 134 is connected to the second conductive ear 132, so that the induced current flows to the outlet interface 134. When the outlet component 13 rotates relative to the outer casing 112, the second conductive ear 132 rotates with the second concentric ring 131 relative to the first concentric ring 123. The wire passing through the outlet interface 134 rotates accordingly. The rotation angle is fixed by the hollow ratchet 141 and the annular spring 142, so that the direction of the outlet interface 134 is fixed.

[0038] like Figure 5 and Figure 6 As shown, the first concentric ring 123 and the second concentric ring 131 are coaxially arranged, and the outer conductive ring 1 is insulated from the inner conductive ring 2, and the inner conductive ring 1 is insulated from the outer conductive ring 2.

[0039] Specifically, the first conductive ring on the outer ring and the first conductive ring on the inner ring are spaced apart to form an insulation layer, and the second conductive ring on the outer ring and the second conductive ring on the inner ring are spaced apart to form an insulation layer. Secondly, the first concentric ring 123 and the second concentric ring 131 have the same shape, but the first conductive ring on the inner ring is connected to the first stage of the first plug ear 122, and the second conductive ring on the inner ring is connected to the first stage of the second conductive ear 132. This ensures that the second concentric ring 131 does not affect the connection between the two when it rotates relative to the first concentric ring 123, and at the same time, it makes the contact area between the two large, so that the two can always be connected under high-frequency vibration environment, thus ensuring electrical stability.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0041] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A turbine flow meter capable of changing the outlet direction, the turbine flow meter comprising a turbine (2) disposed in a valve body pipe (5) and a magnetic sensing element (11) for sensing the rotation of the turbine (2), characterized in that; The turbine flow meter also includes a magnetoelectric induction component (1) for detecting the rotational speed of the turbine (2), and the magnetoelectric induction component (1) further includes: A conductive element (12) electrically connected to the magnetic induction element (11) is electrically connected to and rotates relative to the output element (13) through a circular conductive mechanism to adjust the output direction of the output element (13); An anti-loosening fixing member (14) is provided at the connection position of the conductive member (12) and the lead-out member (13). The anti-loosening fixing member (14) forms a ratchet positioning mechanism to lock the relative position of the conductive member (12) and the lead-out member (13).

2. The turbine flow meter according to claim 1, characterized in that: The conductive element (12) includes a first conductive ear (121) electrically connected to the magnetic sensing element (11), the first conductive ear (121) being electrically connected to a first plug ear (122), the first plug ear (122) being electrically connected to a first concentric ring (123), the first concentric ring (123) forming a first conductive ring that is concentrically arranged and mutually insulated; The lead-out component (13) includes a second concentric ring (131), which forms a second conductive ring that is concentrically arranged and mutually insulated. The second conductive rings of the inner and outer rings are electrically connected to the first conductive rings of the inner and outer rings, respectively. The first concentric ring (123) and the second concentric ring (131) form the circular conductive mechanism so that the second concentric ring (131) can rotate relative to the first concentric ring (123).

3. The turbine flow meter according to claim 2, characterized in that: The anti-loosening fastener (14) includes a hollow ratchet (141) that is insulated from the second concentric ring (131) and the first concentric ring (123). The hollow ratchet (141) is provided with an annular spring (142) in the circumferential direction. The annular spring (142) forms an elastic buckle. The elastic buckle of the annular spring (142) is embedded in the tooth groove of the hollow ratchet (141) to form the ratchet positioning mechanism.

4. The turbine flow meter according to claim 3, characterized in that: The magnetic sensing element (11) includes a magnetic sensing probe (111) for electromagnetic induction with the turbine (2) and a housing (112) for placing the magnetic sensing probe (111). The housing (112) forms a cavity for placing the conductive element (12). The housing (112) is connected to the outgoing wire element (13) to seal the cavity.

5. The turbine flow meter according to claim 4, characterized in that: The anti-loosening fastener (14) also includes a clamp (143) connecting the cable outlet (13) and the outer shell (112). The clamp (143) is a split structure. An annular groove is formed inside the clamp (143). Annular protrusions are formed on the outer surfaces of the cable outlet (13) and the outer shell (112). The protrusions can be embedded in the groove to constrain the axial and radial degrees of freedom of the cable outlet (13) and the outer shell (112) relative to the clamp (143).

6. The turbine flow meter of claim 2, wherein: The first concentric ring (123) and the second concentric ring (131) are coaxially arranged, and the outer conductive ring one is insulated from the inner conductive ring two, and the inner conductive ring one is insulated from the outer conductive ring two.

7. The turbine flow meter according to claim 2, characterized in that: The output component (13) also includes an output box (133) connected to the outer shell (112) of the magnetic induction component (11). The bottom of the output box (133) has a second conductive lug (132) through it, and the output box (133) forms a through output interface (134). The second conductive lug (132) is electrically connected to the second concentric ring (131) to allow current to flow to the output interface (134).

8. The turbine flow meter according to any one of the preceding claims, characterized in that, It also includes an electrical box (4) that is electrically connected to the outlet interface (134) of the outlet component (13); The turbines (2) are respectively placed at both ends of the valve body pipe (5), the magnetoelectric induction assembly (1) detects the rotation speed of the turbines (2) at the corresponding positions, and the electrical box (4) is placed in the middle position of the magnetoelectric induction assembly (1) so that the detection current or detection signal is transmitted to the electrical box (4).

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