A flow metering system for liquid materials

Abstract

A flow metering system for liquid materials, which relates to the field of flow measurement technology, comprises a square intermediate conversion box, wherein two lateral side end surfaces of the intermediate conversion box are respectively fixedly connected with an inlet pipe and an outlet pipe, wherein the inlet pipe and the outlet pipe are both horizontal pipes with one end open and the other end closed, and the closed ends of the inlet pipe and the outlet pipe extend into the intermediate conversion box respectively, and the intermediate conversion box is respectively provided with a turbine metering component, an electromagnetic metering component, an ultrasonic metering component and a stable support component, and a rotating stop mechanism is respectively provided in the inlet pipe and the outlet pipe. The present invention solves the problems of inconvenient installation, single function and poor metering accuracy of flow metering equipment in the traditional technology when used for flow metering of different types of liquid materials.

Description

Technical Field

[0001] The invention relates to the technical field of flow measurement, and in particular to a flow metering system for liquid materials. Background Art

[0002] Liquid materials, also known as fluid materials, mostly refer to materials that are transported in a flowing state and participate in reactions in chemical production.

[0003] There are many types of liquid materials in chemical production. The properties of these liquid materials, such as density, viscosity, toxicity, corrosiveness, flammability and explosiveness, are also different, so the forms of fluid transportation are also different. The main form of existing fluid transportation is pipeline transportation, and the design scheme of the pipeline system used is also different according to the volume, distance and physical and chemical properties of the transported fluid.

[0004] Flow measurement mainly refers to the counting and measurement of real-time flow and total flow in the process of fluid transportation. Flow, like temperature, pressure and level, is an important parameter in general thermal and chemical production processes. People rely on these parameters to monitor and control the production process and realize the automation of the production process. This will be of great significance to improving product quality and output, ensuring production safety, improving operating processes, improving production conditions and scientific experiments.

[0005] Since flow is a dynamic quantity, flow measurement is a complex technology. Specifically, the conditions for measuring fluid flow are varied, such as the temperature during measurement can be from high temperature to extremely low temperature, the pressure during measurement can be from high pressure to low pressure; the size of the measured flow can be from small flow to large flow; the flow state of the measured fluid can be laminar flow, turbulent flow, etc.; especially for liquid materials, there are also situations such as different viscosities. Therefore, in order to accurately measure the flow, it is necessary to study the flow measurement methods of different fluids under different conditions and provide corresponding measuring instruments.

[0006] As mentioned above, the complexity of the measurement conditions of liquid materials and the diversity of influencing factors make the following problems common when using traditional metering equipment to measure the flow of different liquid materials:

[0007] 1. The metering equipment is inconvenient to install. When the metering equipment is installed for measurement, the existing pipeline system needs to be destructively dismantled, which affects the integrity and continuity of fluid transportation.

[0008] 2. Metering equipment has a single function and is highly specialized, making it difficult to achieve adaptive metering of liquid materials of different properties. Specifically, affected by chemical processes, the same fluid delivery pipeline may transport and transfer different materials at different process stages. The differences in types and properties of these materials make it difficult to use a single type of metering equipment to accurately measure their flow.

[0009] 3. The accuracy of single measurement is poor and there is a lack of comparison in multiple measurements, which leads to measurement deviation.

[0010] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0011] In view of the defects in the prior art, the present invention provides a flow metering system for liquid materials to solve the problems of inconvenient installation, single function and poor measurement accuracy of flow metering equipment in traditional technology when used for flow metering of different types of liquid materials.

[0012] To achieve the above object, the present invention provides the following technical solutions:

[0013] A flow metering system for liquid materials comprises a square intermediate conversion box, on two lateral side end faces of the intermediate conversion box are respectively fixedly connected a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are both horizontal pipes with one end open and the other end closed, the closed ends of the water inlet pipe and the water outlet pipe extend into the intermediate conversion box respectively, the intermediate conversion box is respectively provided with a turbine metering component, an electromagnetic metering component, an ultrasonic metering component and a stable support component, and the water inlet pipe and the water outlet pipe are respectively provided with a rotating stop mechanism.

[0014] As an optimized solution, the turbine metering assembly includes a first diverter pipe, which is arranged above the intermediate conversion box, one end of the first diverter pipe is fixedly connected to the water inlet pipe, and the other end is fixedly connected to the water outlet pipe, and the middle section of the first diverter pipe is replaced by a horizontal first pipe connecting shell, and the two ends of the first pipe connecting shell are respectively fixedly connected to the first diverter pipe.

[0015] As an optimized solution, a guide sleeve is fixedly connected to the inner circumferential wall of the first pipe connecting shell near the inlet end, and a support frame is fixedly connected to the inner circumferential wall of the first pipe connecting shell near the outlet end. A connecting central axis is rotatably provided on the support frame, a ball bearing is rotatably provided on the connecting central axis, and turbine blades are fixed to the outer circumferential wall of the ball bearing.

[0016] As an optimized solution, the electromagnetic metering assembly includes a second shunt pipe, which is arranged on the outer side of the longitudinal end face of the intermediate conversion box, one end of the second shunt pipe is fixedly connected to the water inlet pipe, and the other end is fixedly connected to the water outlet pipe, and the middle section of the second shunt pipe is replaced by a horizontal second pipe connecting shell, and the two ends of the second pipe connecting shell are respectively fixedly connected to the second shunt pipe.

[0017] As an optimized solution, a cylindrical insulating lining is fixed to the inner wall of the second pipe connection shell, two longitudinally symmetrical excitation coils are fixed to the inner wall of the insulating lining, and two vertically symmetrical measuring electrodes are also fixed to the inner wall of the insulating lining, and the two measuring electrodes are arranged perpendicular to the two excitation coils.

[0018] As an optimized solution, the ultrasonic metering component includes a third shunt pipe, which is arranged on the outer side of the longitudinal end surface of the intermediate conversion box. The third shunt pipe and the second shunt pipe are symmetrically arranged. One end of the third shunt pipe is fixedly connected to the water inlet pipe, and the other end is fixedly connected to the water outlet pipe. The middle section of the third shunt pipe is replaced by a horizontal third pipe connecting shell, and both ends of the third pipe connecting shell are respectively fixedly connected to the third shunt pipe.

[0019] As an optimized solution, the ultrasonic metering component further includes an upstream sensing probe and a downstream sensing probe which are arranged opposite to each other, and the upstream sensing probe and the downstream sensing probe are fixedly connected to the longitudinal inner peripheral wall of the third shunt pipe at an angle of 45 degrees.

[0020] As an optimized solution, an electromagnetic counter is fixed on the outer peripheral wall of the first pipe connection shell, and the induction head of the electromagnetic counter extends into the first pipe connection shell and is arranged opposite to the turbine blade.

[0021] As an optimized solution, a transmitter converter is fixedly connected to the longitudinal outer wall of the second pipe connector shell. The transmitter converter is externally connected to two output signal lines. The ends of the output signal lines pass through the second pipe connector shell and are fixedly connected to the corresponding measuring electrodes.

[0022] As an optimized solution, a display and control panel is fixedly connected to the upper end of the outer wall of the third shunt pipe, and the display and control panel is respectively connected to two transmission cables, and the ends of the two transmission cables are respectively fixedly connected to the upstream sensor probe and the downstream sensor probe.

[0023] As an optimized solution, the stable support assembly includes two L-shaped movable support plates, which are symmetrically arranged on both sides of the intermediate conversion box in the transverse direction and are respectively slidably mounted on the circumferential outer walls of the water inlet pipe and the water outlet pipe.

[0024] As an optimized solution, two symmetrical displacement telescopic cylinders are respectively fixedly connected to the lateral outer wall near the lower part of the intermediate conversion box, and the telescopic ends of the displacement telescopic cylinders are fixedly connected to the lateral side end faces of the corresponding L-shaped movable support plates.

[0025] As an optimized solution, the stable support assembly also includes a first fixing frame, a second fixing frame and a third fixing frame, the first fixing frame is fixedly mounted on the outer top surface of the intermediate conversion box, the first pipe connecting shell is fixedly mounted on the first fixing frame, the second fixing frame is fixedly mounted on the longitudinal rear end surface of the intermediate conversion box, the second pipe connecting shell is fixedly mounted on the second fixing frame, the third fixing frame is fixedly mounted on the longitudinal front end surface of the intermediate conversion box, and the third pipe connecting shell is fixedly mounted on the third fixing frame.

[0026] As an optimized solution, the rotating stop mechanism includes a first rotating motor fixedly connected to the closed end surface of the water inlet pipe and a second rotating motor fixedly connected to the closed end surface of the water outlet pipe.

[0027] As an optimized solution, the end of the output shaft of the first rotating motor extends into the water inlet pipe and is fixedly connected to a water inlet stop seat, which is a horizontally arranged cylindrical seat with a directional water inlet provided thereon. The water inlet stop seat is arranged opposite to the first diversion pipe, the second diversion pipe and the third diversion pipe.

[0028] As an optimized solution, the end of the output shaft of the second rotating motor extends into the water outlet pipe and is fixedly connected to a water outlet stop seat, which is a horizontally arranged cylindrical seat with a directional water outlet provided thereon. The water outlet stop seat is arranged opposite to the first diversion pipe, the second diversion pipe and the third diversion pipe.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention provides a variety of metering methods including turbine metering, electromagnetic metering and ultrasonic metering to adapt to the flow metering of liquid materials of different properties and realize diversified metering functions.

[0031] The turbine metering assembly provided in the present invention is, in principle, driven by fluid flow to rotate the turbine, the rotation speed of the turbine is converted into electric pulses, and then the electric pulses react to the fluid flow rate, thereby measuring the instantaneous flow rate and the total flow rate. This metering method has the characteristics of strong resistance to impurities, electromagnetic interference and vibration.

[0032] The electromagnetic metering component provided in the present invention, in principle, uses the fluid as a conductive medium to simulate the Faraday experiment and measures the flow rate by determining the induced voltage. This metering method is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity during measurement, and the pressure loss of the fluid during the metering process is small, so it can be used to measure liquid materials during sewage treatment.

[0033] The ultrasonic metering component provided in the present invention measures the liquid flow by detecting the influence of the fluid flow on the ultrasonic wave, and measures the fluid flow rate by utilizing the time difference existing when the ultrasonic signal passes through the fluid, thereby obtaining the flow rate. This metering method is mainly used to measure the flow rate of pipelines that are difficult to observe and touch. It can not only measure the flow rate of conventional fluids, but also measure the flow rate of fluids with strong corrosive, radioactive, flammable, explosive and other characteristics.

[0034] The turbine metering assembly, electromagnetic metering assembly and ultrasonic metering assembly in the present invention are all arranged on the intermediate conversion box, and work independently when measuring different fluids without affecting each other. Furthermore, the present invention is also provided with a rotating stop mechanism for realizing the switching of different metering modes. The first rotating motor drives the water inlet stop seat to rotate, and the second rotating motor drives the water outlet stop seat to rotate, so as to realize the directional diversion of liquid materials, thereby selecting a suitable metering mode for flow measurement according to the type and physicochemical properties of the fluid in the conveying pipeline.

[0035] When the properties of the fluid transported in the pipeline system are similar and not affected by the metering method, the rotating stop mechanism can be driven to rotate periodically so that the liquid material enters the first diversion pipe, the second diversion pipe and the third diversion pipe respectively in multiple times. The multiple metering components provided in the present invention perform multiple groups of metering comparisons, thereby improving the accuracy of flow measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0037] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction;

[0038] Figure 2 It is a schematic cross-sectional view of the internal structure of each component in the present invention in a top view direction;

[0039] Figure 3 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the side view direction;

[0040] Figure 4 It is a schematic diagram of the external overall structure of the present invention in the main viewing direction;

[0041] Figure 5 It is a schematic diagram of the external overall structure of the present invention in a top view;

[0042] Figure 6 It is a schematic diagram of the external overall structure of the present invention when viewed from the side.

[0043] In the figure: 1-intermediate conversion box, 2-water inlet pipe, 3-water outlet pipe, 4-first shunt pipe, 5-first pipe connection shell, 6-flow guide sleeve, 7-support frame, 8-connecting central shaft, 9-ball bearing, 10-turbine blade, 11-electromagnetic counter, 12-second shunt pipe, 13-second pipe connection shell, 14-insulating lining, 15-excitation coil, 16-measuring electrode, 17-transmitter converter, 18-output signal line, 19-third shunt Tube, 20-third tube shell, 21-upstream sensor probe, 22-downstream sensor probe, 23-display and control panel, 24-transmission cable, 25-L-shaped mobile support plate, 26-displacement telescopic cylinder, 27-first fixed frame, 28-second fixed frame, 29-third fixed frame, 30-first rotating motor, 31-second rotating motor, 32-water inlet stop seat, 33-directional water inlet, 34-water outlet stop seat, 35-directional water outlet. DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0045] like Figures 1 to 6 As shown, a flow metering system for liquid materials includes a square intermediate conversion box 1, on the two lateral side end faces of the intermediate conversion box 1 are respectively fixedly connected a water inlet pipe 2 and a water outlet pipe 3, the water inlet pipe 2 and the water outlet pipe 3 are both horizontal pipes with one end open and the other end closed, the closed ends of the water inlet pipe 2 and the water outlet pipe 3 extend into the intermediate conversion box 1 respectively, and the intermediate conversion box 1 is respectively provided with a turbine metering component, an electromagnetic metering component, an ultrasonic metering component and a stable support component.

[0046] The turbine metering assembly includes a first shunt pipe 4, which is arranged above the intermediate conversion box 1. One end of the first shunt pipe 4 is fixedly connected to the water inlet pipe 2, and the other end is fixedly connected to the water outlet pipe 3. The middle section of the first shunt pipe 4 is replaced by a horizontal first pipe connecting shell 5, and both ends of the first pipe connecting shell 5 are respectively fixedly connected to the first shunt pipe 4.

[0047] A guide sleeve 6 is fixedly connected to the inner circumferential wall of the first pipe joint shell 5 near the inlet end, a support frame 7 is fixedly connected to the inner circumferential wall of the first pipe joint shell 5 near the outlet end, a connecting central shaft 8 is rotatably provided on the support frame 7, a ball bearing 9 is rotatably sleeved on the connecting central shaft 8, turbine blades 10 are fixed to the outer circumferential wall of the ball bearing 9, an electromagnetic counter 11 is fixed to the outer circumferential wall of the first pipe joint shell 5, and the induction head of the electromagnetic counter 11 extends into the first pipe joint shell 5 and is arranged directly opposite to the turbine blades 10.

[0048] The electromagnetic metering assembly includes a second shunt pipe 12, which is arranged on the outer side of the longitudinal end face of the intermediate conversion box 1. One end of the second shunt pipe 12 is fixedly connected to the water inlet pipe 2, and the other end is fixedly connected to the water outlet pipe 3. The middle section of the second shunt pipe 12 is replaced by a horizontal second pipe connecting shell 13, and both ends of the second pipe connecting shell 13 are respectively fixedly connected to the second shunt pipe 12.

[0049] A cylindrical insulating liner 14 is fixedly connected to the inner circumferential wall of the second pipe connection shell 13 , and two longitudinally symmetrical excitation coils 15 are fixedly connected to the inner circumferential wall of the insulating liner 14 . Two vertically symmetrical measuring electrodes 16 are also fixedly connected to the inner circumferential wall of the insulating liner 14 . The two measuring electrodes 16 are vertically arranged to the two excitation coils 15 .

[0050] A transducer 17 is fixedly connected to the longitudinal outer wall of the second pipe connector shell 13 . The transducer 17 is externally connected to two output signal lines 18 . The ends of the output signal lines 18 pass through the second pipe connector shell 13 and are fixedly connected to the corresponding measuring electrodes 16 .

[0051] The ultrasonic metering component includes a third shunt pipe 19, which is arranged on the outer side of the longitudinal end surface of the intermediate conversion box 1. The third shunt pipe 19 is symmetrically arranged with the second shunt pipe 12. One end of the third shunt pipe 19 is fixedly connected to the water inlet pipe 2, and the other end is fixedly connected to the water outlet pipe 3. The middle section of the third shunt pipe 19 is replaced by a horizontal third pipe connecting shell 20, and both ends of the third pipe connecting shell 20 are respectively fixedly connected to the third shunt pipe 19.

[0052] The ultrasonic metering assembly further includes an upstream sensor probe 21 and a downstream sensor probe 22 which are arranged opposite to each other. The upstream sensor probe 21 and the downstream sensor probe 22 are fixedly connected to the longitudinal inner peripheral wall of the third manifold 19 at an angle of 45 degrees.

[0053] A display control panel 23 is fixedly connected to the upper end of the outer peripheral wall of the third shunt pipe 19 . The display control panel 23 is externally connected to two transmission cables 24 . The ends of the two transmission cables 24 are fixedly connected to the upstream sensor probe 21 and the downstream sensor probe 22 .

[0054] The stable support assembly includes two L-shaped movable support plates 25 , which are symmetrically arranged on both sides of the intermediate conversion box 1 in the transverse direction and are slidably sleeved on the circumferential outer walls of the water inlet pipe 2 and the water outlet pipe 3 .

[0055] Two symmetrical displacement and telescopic cylinders 26 are fixedly connected to the transverse outer wall near the lower part of the intermediate conversion box 1 , and the telescopic ends of the displacement and telescopic cylinders 26 are fixedly connected to the transverse side end surfaces of the corresponding L-shaped movable support plates 25 .

[0056] The stable support assembly also includes a first fixing frame 27, a second fixing frame 28 and a third fixing frame 29. The first fixing frame 27 is fixedly mounted on the outer top surface of the intermediate conversion box 1, the first pipe connection shell 5 is fixedly mounted on the first fixing frame 27, the second fixing frame 28 is fixedly mounted on the longitudinal rear end surface of the intermediate conversion box 1, the second pipe connection shell 13 is fixedly mounted on the second fixing frame 28, the third fixing frame 29 is fixedly mounted on the longitudinal front end surface of the intermediate conversion box 1, and the third pipe connection shell 20 is fixedly mounted on the third fixing frame 29.

[0057] The water inlet pipe 2 and the water outlet pipe 3 are respectively provided with a rotation stop mechanism, which includes a first rotating motor 30 fixedly connected to the closed end surface of the water inlet pipe 2 and a second rotating motor 31 fixedly connected to the closed end surface of the water outlet pipe 3.

[0058] The output shaft end of the first rotating motor 30 extends into the water inlet pipe 2 and is fixedly connected to a water inlet stop seat 32. The water inlet stop seat 32 is a horizontally arranged cylindrical seat. A directional water inlet 33 is provided on the water inlet stop seat 32. The water inlet stop seat 32 is arranged opposite to the first diversion pipe 4, the second diversion pipe 12 and the third diversion pipe 19. The first rotating motor 30 drives the water inlet stop seat 32 to rotate a certain angle, so that the directional water inlet 33 is respectively connected to one of the diversion pipes and the other two diversion pipes are isolated, thereby realizing directional diversion to achieve the purpose of classified metering.

[0059] The first shunt pipe 4, the second shunt pipe 12 and the third shunt pipe 19 have the same diameter and length.

[0060] The end of the output shaft of the second rotating motor 31 extends into the water outlet pipe 3 and is fixedly connected to a water outlet stop seat 34. The water outlet stop seat 34 is a horizontally arranged cylindrical seat, and a directional water outlet 35 is opened on the water outlet stop seat 34. The water outlet stop seat 34 is arranged opposite to the first diversion pipe 4, the second diversion pipe 12 and the third diversion pipe 19.

[0061] When the present invention is used: first, the open end of the water inlet pipe 2 is fixed to the end of the conveying pipeline, and the liquid material is introduced into the water inlet pipe 2; different flow metering methods are selected according to the type and physical and chemical properties of the liquid material, and then the first rotating motor 30 is started, and the first rotating motor 30 drives the water inlet stop seat 32 to rotate, so that the directional water inlet 33 faces different diversion pipes, and at the same time, the second rotating motor 31 is started, and the second rotating motor 31 drives the water outlet stop seat 34 to rotate, so that the directional water outlet 35 faces the same diversion pipe; when the directional water inlet 33 and the directional water outlet 35 face the first diversion pipe 4, the liquid material enters from the water inlet pipe 2, passes through the first diversion pipe 4 After the turbine metering is completed in the first pipe connection shell 5, the liquid is discharged from the outlet pipe 3; during the turbine metering process, the electromagnetic counter 11 is started. After entering the first pipe connection shell 5, due to the certain angle between the liquid material and the turbine blade 10, the impact of the liquid material provides a rotational torque for the turbine blade 10, so that it overcomes the friction torque and fluid resistance and realizes circumferential rotation. After the speed stabilizes, the magnetically conductive turbine blade 10 periodically cuts the magnetic field formed by the electromagnetic counter 11, and forms a continuous electric pulse signal by changing the magnetic flux, so that the instantaneous flow rate and the cumulative flow rate of the fluid are displayed on the electromagnetic counter 11; when the directional water inlet 3 3 and the directional water outlet 35 are facing the second shunt pipe 12, the liquid material enters from the water inlet pipe 2, is guided by the second shunt pipe 12, and is discharged from the water outlet pipe 3 after electromagnetic measurement is completed in the second pipe connection shell 13; during the electromagnetic measurement process, the two excitation coils 15 fixedly connected in the second pipe connection shell 13 will generate a constant magnetic field. When the liquid material as a conductive medium enters the second pipe connection shell 13, an induced voltage will be generated in the constant magnetic field, and then the two measuring electrodes 16 will measure the generated induced voltage, and finally the measured voltage will be amplified by the transducer 17 and converted into flow data; when the directional water inlet 33 and the directional water outlet 35 are facing the third When the flow meter passes through the shunt pipe 19, the liquid material enters from the water inlet pipe 2, is diverted through the third shunt pipe 19, and is ultrasonically metered in the third pipe connection shell 20 before being discharged from the water outlet pipe 3; during the ultrasonic metering process, the display and control panel 23 is started to control the upstream sensor probe 21 to transmit an ultrasonic signal, which is received by the downstream sensor probe 22 after passing through the liquid material, and then fed back to the display and control panel 23. The flow rate of the liquid material causes a time difference between the signal transmitted by the upstream sensor probe 21 and the signal received by the downstream sensor probe 22. The flow rate can be calculated through the time difference, and then the instantaneous flow rate can be obtained; further, the above-mentioned multiple metering components can perform multiple groups of metering comparisons.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A flow metering system for liquid materials, characterized in that: The invention comprises a square intermediate conversion box (1), wherein a water inlet pipe (2) and a water outlet pipe (3) are respectively fixedly connected to two lateral side end surfaces of the intermediate conversion box (1), wherein the water inlet pipe (2) and the water outlet pipe (3) are both horizontal pipes with one end open and the other end closed, wherein the closed ends of the water inlet pipe (2) and the water outlet pipe (3) respectively extend into the intermediate conversion box (1), wherein a turbine metering component, an electromagnetic metering component, an ultrasonic metering component and a stable support component are respectively provided on the intermediate conversion box (1), and wherein a rotation stop mechanism is respectively provided in the water inlet pipe (2) and the water outlet pipe (3); The turbine metering assembly comprises a first shunt pipe (4), the first shunt pipe (4) being arranged above the intermediate conversion box (1), one end of the first shunt pipe (4) being fixedly connected to the water inlet pipe (2), and the other end of the first shunt pipe (4) being fixedly connected to the water outlet pipe (3), the middle section of the first shunt pipe (4) being replaced by a horizontal first pipe connection shell (5), the two ends of the first pipe connection shell (5) being respectively fixedly connected to the first shunt pipe (4); A guide sleeve (6) is fixedly connected to the inner peripheral wall of the first pipe connection shell (5) near the inlet end, a support frame (7) is fixedly connected to the inner peripheral wall of the first pipe connection shell (5) near the outlet end, a connecting central shaft (8) is rotatably provided on the support frame (7), a ball bearing (9) is rotatably sleeved on the connecting central shaft (8), and a turbine blade (10) is fixed to the outer peripheral wall of the ball bearing (9); The electromagnetic metering assembly comprises a second shunt pipe (12), the second shunt pipe (12) being arranged outside the longitudinal end surface of the intermediate conversion box (1), one end of the second shunt pipe (12) being fixedly connected to the water inlet pipe (2), and the other end of the second shunt pipe (12) being fixedly connected to the water outlet pipe (3), the middle section of the second shunt pipe (12) being replaced by a horizontal second pipe connection shell (13), and both ends of the second pipe connection shell (13) being fixedly connected to the second shunt pipe (12); A cylindrical insulating liner (14) is fixedly connected to the inner circumferential wall of the second pipe connection shell (13); two longitudinally symmetrical excitation coils (15) are fixedly connected to the inner circumferential wall of the insulating liner (14); two vertically symmetrical measuring electrodes (16) are also fixedly connected to the inner circumferential wall of the insulating liner (14); the two measuring electrodes (16) are arranged perpendicularly to the two excitation coils (15); The ultrasonic metering assembly comprises a third shunt pipe (19), the third shunt pipe (19) being arranged outside the longitudinal end surface of the intermediate conversion box (1), the third shunt pipe (19) being symmetrically arranged with the second shunt pipe (12), one end of the third shunt pipe (19) being fixedly connected to the water inlet pipe (2), and the other end of the third shunt pipe (19) being fixedly connected to the water outlet pipe (3), the middle section of the third shunt pipe (19) being replaced by a horizontal third pipe connection shell (20), and both ends of the third pipe connection shell (20) being fixedly connected to the third shunt pipe (19); The ultrasonic metering component further comprises an upstream sensing probe (21) and a downstream sensing probe (22) which are arranged opposite to each other, and the upstream sensing probe (21) and the downstream sensing probe (22) are fixedly connected to the longitudinal inner peripheral wall of the third shunt pipe (19) at an angle of 45 degrees.

2. A flow metering system for liquid materials according to claim 1, characterized in that: An electromagnetic counter (11) is fixed on the outer peripheral wall of the first pipe connection shell (5); the induction head of the electromagnetic counter (11) extends into the first pipe connection shell (5) and is arranged opposite to the turbine blade (10).

3. A flow metering system for liquid materials according to claim 1, characterized in that: A transducer (17) is fixedly connected to the longitudinal outer wall of the second pipe connection shell (13); the transducer (17) is externally connected to two output signal lines (18); the ends of the output signal lines (18) pass through the second pipe connection shell (13) and are fixedly connected to the corresponding measuring electrodes (16).

4. A flow metering system for liquid materials according to claim 1, characterized in that: A display control panel (23) is fixedly connected to the upper end of the outer peripheral wall of the third shunt pipe (19), and the display control panel (23) is respectively externally connected to two transmission cables (24), and the ends of the two transmission cables (24) are respectively fixedly connected to the upstream sensor probe (21) and the downstream sensor probe (22).

5. A flow metering system for liquid materials according to claim 1, characterized in that: The stabilizing support assembly comprises two L-shaped movable support plates (25), the two L-shaped movable support plates (25) being symmetrically arranged on both sides of the intermediate conversion box (1) in the transverse direction and being slidably sleeved on the circumferential outer walls of the water inlet pipe (2) and the water outlet pipe (3) respectively; Two symmetrical displacement telescopic cylinders (26) are respectively fixedly connected to the transverse outer wall of the intermediate conversion box (1) near the lower part, and the telescopic ends of the displacement telescopic cylinders (26) are fixedly connected to the transverse side end surfaces of the corresponding L-shaped movable support plates (25).

6. A flow metering system for liquid materials according to claim 5, characterized in that: The stabilizing support assembly further comprises a first fixing frame (27), a second fixing frame (28) and a third fixing frame (29), wherein the first fixing frame (27) is fixedly mounted on the outer top surface of the intermediate conversion box (1), the first pipe connection shell (5) is fixedly mounted on the first fixing frame (27), the second fixing frame (28) is fixedly mounted on the longitudinal rear end surface of the intermediate conversion box (1), the second pipe connection shell (13) is fixedly mounted on the second fixing frame (28), the third fixing frame (29) is fixedly mounted on the longitudinal front end surface of the intermediate conversion box (1), and the third pipe connection shell (20) is fixedly mounted on the third fixing frame (29).

7. A flow metering system for liquid materials according to claim 1, characterized in that: The rotation blocking mechanism comprises a first rotation motor (30) fixedly connected to the closed end surface of the water inlet pipe (2) and a second rotation motor (31) fixedly connected to the closed end surface of the water outlet pipe (3).

8. A flow metering system for liquid materials according to claim 7, characterized in that: The end of the output shaft of the first rotating motor (30) extends into the water inlet pipe (2) and is fixedly connected to a water inlet stop seat (32); the water inlet stop seat (32) is a horizontally arranged cylindrical seat, a directional water inlet port (33) is provided on the water inlet stop seat (32), and the water inlet stop seat (32) is arranged opposite to the first diverter pipe (4), the second diverter pipe (12) and the third diverter pipe (19).

9. A flow metering system for liquid materials according to claim 7, characterized in that: The output shaft end of the second rotating motor (31) extends into the water outlet pipe (3) and is fixedly connected to a water outlet stop seat (34); the water outlet stop seat (34) is a horizontally arranged cylindrical seat, and a directional water outlet (35) is provided on the water outlet stop seat (34); the water outlet stop seat (34) is arranged opposite to the first diverter pipe (4), the second diverter pipe (12) and the third diverter pipe (19).

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