Rotor assembly and axial rotor flow meter

Abstract

According to the rotor assembly and the axial rotor flow meter, the rotor body is fixed to the rotor support, the magnetic part is arranged on the rotor body, rotation on the rotor assembly can cause the magnetic part arranged above the rotor assembly to rotate together, and the magnetic field around the magnetic part changes periodically. According to the axial rotor flow meter, a center shaft of a rotor assembly and a center shaft of a fluid pipeline are located in the coaxial direction, blades and a rotor body in the rotor assembly rotate around the center shaft of the rotor assembly, the two ends of the rotor body face a water inlet and a water outlet of a flow meter shell respectively, and the rotor body is located in the axial direction of the fluid pipeline. The installation concentricity is greatly improved through axial rotation, the concentricity is remarkably improved, and the technical problem that a traditional radial flow meter is poor in concentricity is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flow meters, in particular to a rotor assembly and an axial rotor flow meter. BACKGROUND

[0002] A flow meter is a device used to measure the flow rate of a fluid, such as a liquid or a gas, and plays an important role in various fields such as industrial production, scientific research, energy management, and environmental protection.

[0003] The rotor of the existing flow meter is usually installed in a radial manner, which has the problems of poor concentricity and difficult to control, which will affect the measurement accuracy and stability of the flow meter. SUMMARY

[0004] The technical problem to be solved by the present application is that the rotor of the existing flow meter is usually installed in a radial manner, which has the problems of poor concentricity and difficult to control, which will affect the measurement accuracy and stability of the flow meter.

[0005] In order to solve the above problems, in order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a rotor assembly and an axial rotor flow meter.

[0006] In a first aspect, the present application discloses a rotor assembly for installation in a device through which fluid passes, comprising a rotor support, a blade, a rotor body, and a magnetic member, wherein the rotor support is in contact with the inner wall of the installation device, the rotor body is connected with the rotor support, the blade is connected with the rotor body, and the magnetic member is connected with the rotor body.

[0007] Preferably, the blade is provided with a guide groove extending from one end close to the rotor body to the other end away from the rotor body.

[0008] Preferably, the rotor body is provided with a first connecting portion and a second connecting portion at both ends, the rotor support is connected with the first connecting portion and the second connecting portion respectively, the first connecting portion is arranged close to the water inlet side, and the second connecting portion is arranged close to the water outlet side.

[0009] Preferably, the rotor body comprises a first part and a second part, the first part and the second part are integrally formed, the blade is arranged on the first part, and the magnetic member is arranged on the second part.

[0010] Preferably, the first part is arranged in a shape of a circular truncated cone, and the second part is arranged in a shape of a cylinder.

[0011] Preferably, the rotor support comprises a first mounting portion and a second mounting portion, two ends of the rotor body are connected to the first mounting portion and the second mounting portion respectively, the first mounting portion is arranged close to the water inlet side, and the second mounting portion is arranged close to the water outlet side.

[0012] Preferably, the first mounting portion is provided with a contact piece, and the contact piece is arranged with an arc-shaped groove close to one side of the rotor body.

[0013] The second mounting portion is provided with a bearing and an elastic piece, one end of the elastic piece is connected to the outer ring of the bearing, and the other end is connected to the second mounting portion; and the inner ring of the bearing is fixedly connected to the rotor body.

[0014] In the second aspect, the application discloses an axial rotor flowmeter comprising the above rotor assembly.

[0015] Preferably, the flowmeter housing and the Hall sensor are comprised.

[0016] The flowmeter housing is provided with a fluid pipeline, the Hall sensor is arranged on the outer surface of the flowmeter housing, the rotor assembly is installed in the fluid pipeline, and the rotor support of the rotor assembly is close to the inner wall of the fluid pipeline.

[0017] The central axis of the rotor body is coaxial with the central axis of the fluid pipeline.

[0018] Preferably, the fluid pipeline comprises a water inlet cavity, a rotor mounting cavity and a water outlet cavity, the water inlet cavity, the rotor mounting cavity and the water outlet cavity are communicated, and the water inlet cavity, the rotor mounting cavity and the water outlet cavity are sequentially connected.

[0019] The water inlet cavity adopts a horn shape, and the inner diameter of the water inlet cavity close to one end of the rotor mounting cavity is smaller than the inner diameter of the water inlet cavity close to the water inlet end.

[0020] Preferably, the water outlet end of the water inlet cavity deviates from the cross-sectional center position of the rotor mounting cavity, and the water outlet end of the water inlet cavity faces the blade.

[0021] Alternatively, the water outlet end of the water inlet cavity is coaxial with the cross-sectional central axis of the rotor mounting cavity, and the water outlet end of the water inlet cavity faces one end of the rotor body.

[0022] Compared with the prior art, the above technical solutions provided by the application have the following advantages:

[0023] The rotor assembly and axial rotor flowmeter provided by the application, wherein the rotor assembly is mentioned, the rotor body is fixed on the rotor support, and the magnetic member is arranged on the rotor body, the rotation of the rotor assembly causes the magnetic member arranged above the rotor assembly to rotate together, and the periodic change of the magnetic field around the magnetic member is caused, when the blade rotates to cause the change of the magnetic field around the blade, the Hall sensor is used to detect the change of the magnetic field, the Hall sensor is in the changing magnetic field, the change of the magnetic field influenced by the magnetic member is sensed by the Hall sensor, and the corresponding electric signal is output, the pulse signal is formed, the current fluid flow can be acquired by analyzing the pulse signal, the flow condition of the fluid is understood according to the output flow data, and the monitoring and control of the fluid are realized.

[0024] The axial rotor flowmeter is mentioned, the central axis of the rotor assembly is coaxial with the central axis of the fluid pipeline, that is, the two are on the same straight line, the blade and the rotor body in the rotor assembly rotate around the central axis of the rotor assembly, the two ends of the rotor body are respectively towards the water inlet and the water outlet of the flowmeter shell, and the rotor body is in the axial direction of the fluid pipeline, the axial rotation greatly improves the installation concentricity problem, the concentricity is significantly improved, the technical problem of poor concentricity of the traditional radial flowmeter is overcome, the performance of the flowmeter is more stable, and the measurement accuracy is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings incorporated into the specification and forming a part thereof show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0027] Figure 1 The structure diagram of the rotor assembly provided by the application Figure 1 ; The structure diagram of the rotor assembly provided by the application

[0028] Figure 2 The structure diagram of the rotor assembly provided by the application Figure 2 ; The structure diagram of the rotor assembly provided by the application

[0029] Figure 3 For Figure 7 the enlarged schematic view at P in FIG. 6;

[0030] Figure 4 The structure diagram of the rotor assembly provided by the application Figure 3 ; The structure diagram of the rotor assembly provided by the application

[0031] Figure 5A cross-sectional structure schematic diagram of a rotor assembly provided by the present application;

[0032] Figure 6 A Figure 10 enlarged schematic diagram at R;

[0033] Figure 7 A Figure 10 enlarged schematic diagram at Q;

[0034] Figure 8 A connection structure schematic diagram of a rotor body and a magnetic piece provided by the present application Figure 1 ;

[0035] Figure 9 A connection structure schematic diagram of a rotor body and a magnetic piece provided by the present application Figure 2 ;

[0036] Figure 10 A connection structure schematic diagram of a rotor body and a magnetic piece provided by the present application Figure 3 ;

[0037] Figure 11 A structure schematic diagram of an axial rotor flowmeter provided by the present application Figure 1 ;

[0038] Figure 12 A structure schematic diagram of an axial rotor flowmeter provided by the present application Figure 2 ;

[0039] Figure 13 A structure schematic diagram of an axial rotor flowmeter provided by the present application Figure 3 ;

[0040] Figure 14 A cross-sectional structure schematic diagram of an axial rotor flowmeter provided by the present application;

[0041] Figure 15 A cross-sectional structure schematic diagram of a flowmeter housing of an axial rotor flowmeter provided by the present application.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] 1. An axial rotor flowmeter;

[0044] 11. A flowmeter housing; 111. A fluid conduit; 1111. An inlet water cavity; 1112. A rotor mounting cavity; 1113. An outlet water cavity; 1114. An outlet water hole;

[0045] 12. A Hall sensor;

[0046] 13, rotor assembly; 131, rotor support; 1311, first mounting portion; 1312, second mounting portion; 1313, contact piece; 1314, arc-shaped slot; 1315, water inlet hole; 1316, bearing; 1317, elastic piece; 132, blade; 1321, guide slot; 133, rotor body; 1331, first connecting portion; 1332, second connecting portion; 1333, first part; 1334, second part; 134, magnetic piece. DETAILED DESCRIPTION

[0047] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0048] In the first aspect, referring to Figures 1-10 The present application discloses a rotor assembly 13 for installation in a device through which fluid passes, comprising a rotor support 131, a blade 132, a rotor body 133, and a magnetic piece 134, wherein the rotor support 131 is in contact with the inner wall of the installation device, the rotor body 133 is connected with the rotor support 131, the blade 132 is connected with the rotor body 133, and the magnetic piece 134 is connected with the rotor body 133.

[0049] The rotor body 133 is fixed on the rotor support 131, and the magnetic piece 134 is arranged on the rotor body 133. When the rotor assembly 13 rotates, the magnetic piece 134 arranged above the rotor assembly 13 will also rotate, causing the magnetic field around the magnetic piece 134 to change periodically. When the blade 132 rotates and causes the magnetic field around it to change, a Hall sensor 12 is used to detect the change in the magnetic field. The Hall sensor 12 is in a changing magnetic field, and the Hall sensor 12 senses the change in the magnetic field influenced by the magnetic piece 134 and outputs a corresponding electrical signal to form a pulse signal. By analyzing the pulse signal, the rotation of the rotor assembly 13 can be obtained. Further, according to the rotation of the rotor assembly 13 (such as the rotation speed, the number of rotation circles, etc.), the current fluid flow can be obtained. According to the output flow data, the flow condition of the fluid can be understood, and the monitoring and control of the fluid can be realized.

[0050] The blade 132 is provided with a guide slot 1321, which extends from one end close to the rotor body 133 to one end away from the rotor body 133. The guide slot 1321 is designed in a streamline shape, which is consistent with the flow trajectory of the water flow in a natural state, so that the passing fluid can push the blade to rotate.

[0051] The rotor body 133 is provided with a first connecting part 1331 and a second connecting part 1332 at two ends, the rotor support 131 is connected with the first connecting part 1331 and the second connecting part 1332 respectively, the first connecting part 1331 is arranged near the water inlet side, and the second connecting part 1332 is arranged near the water outlet side.

[0052] The first connecting part 1331 and the second connecting part 1332 are installed on the rotor support 131, the central axes of the first connecting part 1331 and the second connecting part 1332 are in the same straight line, and the rotor body 133 rotates around the straight line where the central axes of the first connecting part 1331 and the second connecting part 1332 are located.

[0053] The rotor body 133 comprises a first part 1333 and a second part 1334, the first part and the second part are integrally formed, the blades are arranged on the first part, and the magnetic parts are arranged on the second part.

[0054] The first part 1333 is arranged in a frustoconical shape, the second part 1334 is arranged in a cylindrical shape, the first part 1333 adopts a frustoconical shape, so that the fluid can flow along the surface, reducing the direct impact of the fluid on the rotor body 133, the outer diameters of the positions where the first part 1333 and the second part 1334 contact are the same, the outside of the rotor body 133 is arranged more smoothly, reducing the generation of vortex and turbulence, and avoiding affecting the normal flow state of the fluid.

[0055] The rotor support 131 comprises a first mounting part 1311 and a second mounting part 1312, the two ends of the rotor body 133 are connected with the first mounting part 1311 and the second mounting part 1312 respectively, the first mounting part 1311 is arranged near the water inlet side, and the second mounting part 1312 is arranged near the water outlet side.

[0056] The first mounting part 1311 is provided with a contact piece 1313, the contact piece 1313 is provided with an arc-shaped groove 1314 near the side of the rotor body 133, the first connecting part 1331 and the second connecting part 1332 are respectively installed on the arc-shaped grooves 1314 of the first mounting part 1311 and the second mounting part 1312, so that the positions of the two ends of the rotor body 133 are supported, the positions of the two ends of the rotor body 133 are supported when the rotor body 133 rotates, avoiding the positions from being separated from the positions limited by the rotor support 131 when rotating. In order to make the connection of the first connecting part 1331 and the second connecting part 1332 more stable, the depth of the arc-shaped groove 1314 can be increased, the shape of the arc-shaped groove 1314 can be matched with the shape of the first connecting part 1331 and the second connecting part 1332, so that the arc-shaped groove 1314 can completely wrap the first connecting part 1331 and the second connecting part 1332.

[0057] The second mounting portion 1312 is provided with a bearing 1316 and an elastic member 1317, one end of the elastic member 1317 is connected with the outer ring of the bearing 1316, the other end of the elastic member 1317 is connected with the second mounting portion 1312; the inner ring of the bearing 1316 is fixedly connected with the rotor body 133.

[0058] Specifically, the first mounting portion 1311 is provided with a contact member 1313, the contact member 1313 is provided with an arc-shaped groove 1314 close to one side of the rotor body 133, the arc-shaped groove 1314 is matched with the outer shape of one end of the rotor body 133, the second mounting portion 1312 is provided with a bearing 1316 and an elastic member 1317, one end of the elastic member 1317 is connected with the outer ring of the bearing 1316, the other end of the elastic member 1317 is connected with the second mounting portion 1312; the inner ring of the bearing 1316 is fixedly connected with the rotor body 133.

[0059] It can be understood that the contact member 1313 is in contact with the first connecting portion 1331, the inner ring of the bearing 1316 is connected with the second connecting portion 1332, and the outer ring is connected with the elastic member 1317, due to the self elastic force of the elastic member 1317, the rotor body 133 can be pushed to abut against the contact member 1313, so that the first connecting portion 1331 and the second connecting portion 1332 at both ends of the rotor body 133 are limited by the contact member 1313 and the bearing 1316, avoiding the rotor body 133 from being separated from the rotor support 131.

[0060] In a second aspect, referring to Figures 1-15 The axial rotor flowmeter 1 is used for detecting the specific flow of fluid, and the fluid includes liquid, gas and the like. The axial rotor flowmeter 1 comprises the rotor assembly 13, the flowmeter shell 11, and the Hall sensor 12 mentioned in the first aspect, the flowmeter shell 11 is provided with a fluid pipeline 111, the rotor assembly 13 is installed in the fluid pipeline 111, the Hall sensor 12 is arranged on the outer surface of the flowmeter shell 11, the rotor support 131 is in contact with the inner wall of the fluid pipeline 111, the rotor body 133 is connected with the rotor support 131, and the central axis of the rotor body 133 is in the coaxial direction of the central axis of the fluid pipeline 111, that is, the two are in the same straight line.

[0061] The Hall sensor 12 is arranged on the outer surface of the flowmeter housing 11, and the magnetic element 134 is arranged inside the flowmeter housing 11. The rotation of the rotor body 133 drives the magnetic element 134 to rotate simultaneously, thereby changing the magnetic field of the magnetic element 134. The Hall sensor 12 senses the change of the magnetic field and outputs a corresponding electrical signal. The blades 132 are designed in a radial flow type. The blades 132 extend from the rotor body 133 to the surrounding. The blades 132 are uniformly arranged on the surface of the rotor body 133. The fluid entering the fluid pipeline 111 can apply a force on the surface of the blades 132, so that the blades 132 drive the rotor body 133 to rotate.

[0062] Specifically, the flowmeter housing 11 is provided with a mounting structure for mounting the Hall sensor 12. The mounting structure is arranged at a position matched with the position of the rotor assembly 13 inside, so as to facilitate the Hall sensor 12 to detect the rotation of the rotor assembly 13. The central axis of the rotor support 131 is in the same straight line with the central axis of the rotor body 133. The central axis of the rotor body 133 is in the same straight line with the central axis of the fluid pipeline 111 (as shown in Figure 4 With Figure 6 The two ends of the rotor body 133 are respectively directed to the water inlet and the water outlet of the flowmeter housing 11. The rotor body 133 is arranged in the axial direction of the fluid pipeline 111. The rotor body is arranged in an axial rotation manner, which greatly improves the concentricity problem, significantly improves the concentricity, overcomes the technical problem of poor concentricity of the traditional radial flowmeter, and makes the performance of the flowmeter more stable and the measurement accuracy guaranteed. Further, the rotation of the rotor assembly 13 drives the magnetic element 134 arranged above the rotor assembly 13 to rotate, which causes the magnetic field around the magnetic element 134 to change periodically. When the blades 132 rotate and cause the magnetic field around them to change, the Hall sensor 12 is in a changing magnetic field. The Hall sensor 12 senses the change of the magnetic field affected by the magnetic element 134 and outputs a corresponding electrical signal to form a pulse signal. The analysis of the pulse signal can obtain the current fluid flow. According to the output flow data, the flow condition of the fluid can be understood, and the monitoring and control of the fluid can be realized.

[0063] It can be understood that the rotor of the conventional flow meter adopts a radial structure, that is, the shaft of the rotor is in the radial direction of the fluid pipe. During installation, the rotor needs to be accurately positioned at the center of the pipeline, and the concentricity between the rotor support 131 and the pipeline needs to be ensured. When the water flow impacts the radially installed rotor, the rotor will be subjected to uneven force during rotation due to the difficulty in ensuring the concentricity. Such uneven force can cause the rotor to swing or deviate, further affecting the accuracy and stability of the measurement. In the present scheme, the rotor adopts an axial rotation mode and is axially fixed by the rotor support 131. This axial installation method is relatively simple and it is easier to position the rotor on the central axis of the pipeline during installation. The design of the rotor support 131 can better ensure the concentricity between the rotor and the pipeline, reducing errors and uncertainties during installation. Further, since the rotor rotates axially, the impact force of the water flow on the rotor is mainly in the axial direction, making the force on the rotor more uniform during rotation. Even if there is some installation error, the axial rotation mode can to some extent reduce the problem of uneven force caused by imperfect concentricity, ensuring the stable rotation of the rotor and improving the accuracy and stability of the measurement.

[0064] As an embodiment, the number of vanes 132 can be 2, 3 or more than 4. The plurality of vanes 132 are evenly arranged on the rotor body 133. On the one hand, the plurality of vanes 132 can increase the contact area with the fluid, making the rotor more sensitive to changes in fluid flow. When the fluid flow changes slightly, the plurality of vanes 132 can respond more quickly to such changes, causing the rotor to produce more obvious changes in rotation speed. On the other hand, the plurality of vanes 132 are evenly distributed on the rotor, which can make the force on the rotor more uniform during rotation. When the fluid impacts the vanes 132, the force on each vane 132 is balanced, reducing the swing and vibration of the rotor caused by uneven force. Further, the plurality of vanes 132 share the impact force of the fluid, and each vane 132 bears relatively less wear. At the same time, since the plurality of vanes 132 can make the rotor bear more uniform force, the mechanical stress of the rotor and other components (such as bearings 1316, supports, etc.) caused by uneven force is reduced. Lower mechanical stress can reduce the risk of component damage and reduce the probability of mechanical failure, improving the overall reliability and stability of the flow meter. In the present embodiment, the vanes 132 are arranged in three, but the number of vanes 132 is not limited to the three mentioned in the present embodiment and can be arranged according to specific needs.

[0065] The fluid pipeline 111 includes a water inlet cavity 1111, a rotor installation cavity 1112 and a water outlet cavity 1113 (as shown in FIG. 1). Figure 4 With Figure 5The water inlet cavity 1111, the rotor mounting cavity 1112 and the water outlet cavity 1113 are communicated, and the water inlet cavity 1111, the rotor mounting cavity 1112 and the water outlet cavity 1113 are sequentially connected. The water inlet cavity 1111 is in a trumpet shape. The inner diameter of the water inlet cavity 1111 near one end of the rotor mounting cavity 1112 is smaller than the inner diameter of the water inlet cavity 1111 at a water inlet end.

[0066] Specifically, the fluid sequentially passes through the water inlet cavity 1111, the rotor mounting cavity 1112 and the water outlet cavity 1113. The water inlet cavity 1111 is in a trumpet shape, that is, the inner diameter of the water inlet cavity 1111 at the water inlet end is greater than the inner diameter of the water outlet end of the water inlet cavity 1111. The water flow is accelerated at the water outlet end of the water inlet cavity 1111 and then enters the rotor mounting cavity 1112. The fluid is accelerated at the water outlet end of the water inlet cavity 1111 with a smaller diameter and then impacts the axially mounted blade 132, so that the rotor rotates axially. The protruding part is arranged in the rotor mounting cavity 1112. The protruding part is matched with the outer shape of the rotor support 131. The rotor support 131 is fixed in the rotor mounting cavity 1112 by the cooperation of the protruding part and the rotor support 131. The protruding part is in interference fit with the outer wall of the rotor support 131, that is, the rotor support 131 is clamped with the rotor mounting cavity 1112.

[0067] The blade 132 is provided with a guide groove 1321 (as shown in Figure 14 The direction of the guide groove 1321 extends from the end close to the rotor body 133 to the end away from the rotor body 133. The guide groove 1321 is designed in a streamline shape, which is matched with the flow trajectory of the water flow in a natural state. The inlet of the guide groove 1321 is designed in a gradually expanding shape, so that the fluid can smoothly enter the guide groove 1321 and avoid turbulence. The middle part of the guide groove 1321 is designed in a relatively smooth curve, so as to guide the fluid to impact the blade 132 in a specific direction. The outlet of the guide groove 1321 is designed in a gradually tapering shape, so as to further accelerate the fluid and enhance the impact force on the blade 132.

[0068] As an embodiment, the blade 132 can be made of a magnetic material. The Hall sensor 12 can generate a corresponding electric signal by sensing the polarity change of the blade 132, so as to achieve the detection purpose. The blade 132 is made of a magnetic material, so that the structure of the device is more simple.

[0069] The first connecting part 1331 and the second connecting part 1332 are arranged at both ends of the rotor body 133. The rotor support 131 is connected with the first connecting part 1331 and the second connecting part 1332, respectively. The first connecting part 1331 is arranged close to the water inlet cavity 1111, and the second connecting part 1332 is arranged close to the water outlet cavity 1113.

[0070] Specifically, the first connecting part 1331 and the second connecting part 1332 are installed on the rotor support 131, the central axes of the first connecting part 1331 and the second connecting part 1332 are in the same straight line, and the rotor body 133 rotates around the straight line where the central axes of the first connecting part 1331 and the second connecting part 1332 are located.

[0071] The rotor body 133 includes a first part 1333 and a second part 1334, the first part 1333 and the second part 1334 are integrally formed, the blades 132 are arranged on the first part 1333, and the magnetic member 134 is arranged on the second part 1334. Among them, the blades 132 are arranged in an arc shape, and are arranged from a position close to the first connecting part 1331 of the first part 1333 to a position close to the second connecting part 1332. This design can better allow the water flow to exert force on the blades 132, and the blades 132 can bear more force. The magnetic member 134 is arranged on the second part 1334. Since the first part 1333 and the second part 1334 are integrally made, the blades 132 drive the rotor body 133 to rotate, and the magnetic member 134 also rotates.

[0072] Among them, the first part 1333 is arranged in a frustum shape, and the second part 1334 is arranged in a cylindrical shape (as shown in Figure 14 The first part 1333 adopts a frustum shape, so that the fluid can flow along the surface, reducing the direct impact of the fluid on the rotor body 133. The outer diameter of the position where the first part 1333 and the second part 1334 contact is the same, the outside of the rotor body 133 is more smooth, reducing the generation of vortex and turbulence, avoiding affecting the normal flow state of the fluid.

[0073] As an embodiment, the rotor body 133 adopts a shuttle shape (as shown in Figure 15As shown, the rotor body 133 is divided into three parts, the first part and the third part are the two pointed ends, and the second part is the middle thick part. The first part is provided with the vane 132 and the first connecting part 1331, the third part is provided with the second connecting part 1332, and the magnetic member 134 is installed on the second part. The streamline design of the shuttle-shaped structure is more in line with the flow characteristics of the fluid. When the fluid flows through the flowmeter, the shuttle-shaped rotor can make the fluid flow more smoothly, reducing the collision and friction between the fluid and the rotor, thereby reducing the pressure loss. Further, the rotor of the traditional structure is prone to generate vortex and turbulence when the fluid flows, which affects the normal flow state of the fluid. The shape of the shuttle-shaped rotor makes the fluid flow around it more stable, which can effectively suppress the generation of vortex and turbulence. Stable flow field helps to improve the measurement stability of the flowmeter and reduce measurement errors caused by unstable flow field. Further, the shape of the shuttle-shaped rotor is relatively regular and symmetrical, which is easier to ensure the concentricity with the pipeline during installation. Good concentricity helps to reduce the unbalanced force caused by eccentricity, making the rotor more stable during operation, further improving the measurement accuracy and stability of the flowmeter, and also reducing the risk of equipment wear and failure caused by poor concentricity.

[0074] The water outlet end of the water inlet cavity 1111 deviates from the cross-sectional center position of the rotor mounting cavity 1112 (as shown in Figure 4 As shown, the water outlet end of the water inlet cavity 1111 is towards the vane 132, and the water outlet hole 1114 at the water outlet end of the water inlet cavity 1111 is not concentric with the cross section of the rotor mounting cavity 1112, that is, the water outlet hole 1114 at the water outlet end of the water inlet cavity 1111 is eccentrically arranged, and the fluid can directly impact the vane 132 to directly exert force on the vane 132.

[0075] As an embodiment, the water outlet end of the water inlet cavity 1111 is in the same straight line as the cross-sectional center axis of the rotor mounting cavity 1112 (as shown in Figure 5 As shown, the water outlet end of the water inlet cavity 1111 is towards one end of the rotor body 133. Since the vanes 132 on the rotor body 133 are uniformly arranged, the fluid flows from the center position, flows along the surface of the rotor body 133, and at the same time pushes the vane 132, which can also achieve the purpose of pushing the rotor to move.

[0076] The rotor support 131 comprises a first mounting portion 1311 and a second mounting portion 1312, two ends of the rotor body 133 are connected to the first mounting portion 1311 and the second mounting portion 1312 respectively, the first mounting portion 1311 is arranged close to the water inlet cavity 1111, and the second mounting portion 1312 is arranged close to the water outlet cavity 1113. As an embodiment, the rotor support 131 adopts a cylindrical shape, the outer wall of the rotor support 131 is attached to the rotor mounting cavity 1112, and the first mounting portion 1311 and the second mounting portion 1312 are fixedly connected to the outer wall of the rotor support 131 through a support strip.

[0077] The first mounting portion 1311 and the second mounting portion 1312 are provided with arc-shaped grooves 1314 contacting the surface of the rotor body 133, the first connecting portion 1331 and the second connecting portion 1332 are respectively mounted on the arc-shaped grooves 1314 of the first mounting portion 1311 and the second mounting portion 1312, so that the two ends of the rotor body 133 are supported, and the two ends of the rotor body 133 are supported during rotation of the rotor body 133, thereby avoiding disengagement from the position limited by the rotor support 131 during rotation. In order to make the first connecting portion 1331 and the second connecting portion 1332 have higher connection stability, the depth of the arc-shaped groove 1314 can be increased, and the shape of the arc-shaped groove 1314 can be matched with the shape of the first connecting portion 1331 and the second connecting portion 1332, so that the arc-shaped groove 1314 can completely wrap the first connecting portion 1331 and the second connecting portion 1332.

[0078] As an embodiment, the first mounting portion 1311 is provided with a contact piece 1313, the contact piece 1313 is arranged close to one side of the rotor body 133 and provided with an arc-shaped groove 1314, the arc-shaped groove 1314 is matched with the shape of one end of the rotor body 133, the second mounting portion 1312 is provided with a bearing 1316 and an elastic piece 1317, one end of the elastic piece 1317 is connected to the outer ring of the bearing 1316, and the other end is connected to the second mounting portion 1312; the inner ring of the bearing 1316 is fixedly connected to the rotor body 133.

[0079] It can be understood that the contact piece 1313 contacts the first connecting portion 1331, the inner ring of the bearing 1316 connects the second connecting portion 1332, and the outer ring of the bearing 1316 connects the elastic piece 1317. Due to the self-elastic force of the elastic piece 1317, the rotor body 133 can be pushed against the contact piece 1313, so that the first connecting portion 1331 and the second connecting portion 1332 at both ends of the rotor body 133 are limited by the contact piece 1313 and the bearing 1316, thereby avoiding disengagement of the rotor body 133 from the rotor support 131.

[0080] As an embodiment, the contact piece 1313 is made of elastic material, so that when the contact piece 1313 contacts the first connecting portion 1331, it has a certain buffering force, thereby playing a protective role on the first connecting portion 1331.

[0081] As an embodiment, the contact piece 1313 is provided with a water inlet hole 1315, and the water outlet hole 1114 at the outlet end of the water inlet cavity 1111 is located at the position of the water inlet hole 1315, at this time, the water outlet hole 1114 is located at the center position of the cross section of the rotor mounting cavity 1112. Since the contact piece 1313 abuts against the first connecting part 1331, the end of the rotor body 133 where the first connecting part 1331 is located blocks the water inlet hole 1315 of the contact piece 1313. The first connecting part 1331 passes through the water outlet hole 1114 and the water inlet hole 1315, and the outer diameter of the first connecting part 1331 is smaller than that of the water inlet hole 1315. The first connecting part 1331 extends from the position of the water outlet hole 1114. When the fluid enters the water inlet cavity 1111, it enters from the water outlet hole 1114 to the water inlet hole 1315. Since the end of the rotor body 133 blocks the water inlet hole 1315, the fluid is accelerated at the water outlet hole 1114, which pushes the rotor body 133 to move towards the end of the elastic piece 1317. The rotor body 133 is not blocked by the water inlet hole 1315 of the contact piece 1313, and the fluid enters the rotor mounting cavity 1112 from the water inlet hole 1315, flows along the rotor body 133, and applies a force to the blade 132, which pushes the blade 132 to rotate with the rotor body 133. When the fluid stops entering the fluid conduit 111, the elastic piece 1317 is compressed and deformed due to the force applied by the fluid. As the force applied by the fluid decreases, the elastic piece 1317 gradually returns to its original shape, and the end of the rotor body 133 where the first connecting part 1331 is located blocks the water inlet hole 1315 of the contact piece 1313. The rotor body 133 and the blade 132 stop rotating. The elastic piece 1317 returns to its original shape to block the water inlet hole 1315 of the contact piece 1313 when the fluid stops entering. Due to the reverse force of the elastic piece 1317, the rotor body 133 is abutted against the contact piece 1313, which can better stop the rotation of the rotor body 133, so as to achieve the purpose of stopping the rotation of the rotor body 133 when the fluid does not flow, and avoid the continuous rotation of the rotor body 133 under the action of inertia after the fluid stops flowing, thereby preventing measurement errors.

[0082] As an embodiment, the first mounting part 1311 and the second mounting part 1312 are provided with dampers. When the fluid stops entering the fluid conduit 111, the rotor body 133 stops rotating, which can timely stop the rotation of the rotor body 133 and avoid the continuous rotation of the magnetic part 134 when there is no fluid entering the fluid conduit 111. Timely stopping the continuous rotation of the rotor body 133 when there is no fluid entering can improve the accuracy of flow measurement.

[0083] The axial rotor flowmeter 1 comprises a control system electrically connected with the Hall sensor 12, which receives the electrical signal transmitted by the Hall sensor 12 for analysis. It can be understood that the control system has a signal processing unit, which can analyze the electrical signal generated by the Hall sensor 12 and convert it into flow information, thereby outputting specific flow data to the user.

[0084] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0085] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0086] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0087] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be connected, or detachable, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0088] In the present application, unless specifically defined otherwise, a first feature "on" or "under" a second feature can include the first and second features being directly in contact with each other, or can include the first and second features not being directly in contact with each other but being in contact with each other through another feature between them. Also, a first feature "over", "above" and "on top of" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature "under", "below" and "underneath" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0089] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the present application. The illustrative description of the above terms does not mean that the same embodiment or example is necessarily referring to the same embodiment or example. Also, the description of the particular feature, structure, material or characteristic is considered to be included in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0090] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the modifications and variations of the present application are intended to be included within the scope of the present application claims and their equivalents. The present application is also intended to include such modifications and variations.

[0091] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rotor assembly for installation within a fluid-passing device, characterized in that, It includes a rotor support, blades, a rotor body, and magnetic components. The rotor support is in contact with the inner wall of the mounting equipment. The rotor body is connected to the rotor support, the blades are connected to the rotor body, and the magnetic components are connected to the rotor body.

2. The rotor assembly according to claim 1, characterized in that, The blade is provided with a guide groove, which extends from the end closer to the rotor body to the end farther away from the rotor body.

3. The rotor assembly according to claim 1, characterized in that, The rotor body is provided with a first connecting part and a second connecting part at both ends. The rotor bracket is respectively connected to the first connecting part and the second connecting part. The first connecting part is located near the water inlet side, and the second connecting part is located near the water outlet side.

4. The rotor assembly according to claim 1, characterized in that, The rotor body includes a first part and a second part, the first part and the second part are integrally formed, the blades are disposed in the first part, and the magnetic components are disposed in the second part.

5. The rotor assembly according to claim 4, characterized in that, The first part is set to a frustum-like shape, and the second part is set to a cylinder shape.

6. The rotor assembly according to claim 2, characterized in that, The rotor support includes a first mounting part and a second mounting part. The two ends of the rotor body are respectively connected to the first mounting part and the second mounting part. The first mounting part is located near the water inlet side, and the second mounting part is located near the water outlet side.

7. The rotor assembly according to claim 6, characterized in that, The first mounting part is provided with a contact element, and the contact element is provided with an arc-shaped groove on the side near the rotor body; The second mounting part is provided with a bearing and an elastic element. One end of the elastic element is connected to the outer ring of the bearing, and the other end is connected to the second mounting part. The inner ring of the bearing is fixedly connected to the rotor body.

8. An axial rotor flowmeter, characterized in that, Includes the rotor assembly described in any one of claims 1-7.

9. The axial rotor flowmeter according to claim 8, characterized in that, Including the flow meter housing and Hall sensor; A fluid pipe is provided inside the flow meter housing, the Hall sensor is disposed on the outer surface of the flow meter housing, the rotor assembly is installed inside the fluid pipe, and the rotor support of the rotor assembly is close to the inner wall of the fluid pipe. The central axis of the rotor body is coaxial with the central axis of the fluid pipe.

10. The axial rotor flowmeter according to claim 9, characterized in that, The fluid pipeline includes an inlet chamber, a rotor mounting chamber, and an outlet chamber. The inlet chamber, the rotor mounting chamber, and the outlet chamber are connected in series. The water inlet cavity is funnel-shaped, and the inner diameter of the end of the water inlet cavity near the rotor mounting cavity is smaller than the inner diameter of the end of the water inlet cavity where water enters.

11. The axial rotor flowmeter according to claim 10, characterized in that, The water outlet end of the water inlet chamber is offset from the center of the cross-section of the rotor mounting cavity, and the water outlet end of the water inlet chamber faces the blade. Alternatively, the water outlet end of the water inlet cavity is aligned with the central axis of the cross-section of the rotor mounting cavity, and the water outlet end of the water inlet cavity faces one end of the rotor body.

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