Novel electromagnetic flowmeter

Abstract

The invention discloses a novel electromagnetic flow meter, and relates to the technical field of electromagnetic flow meters, the novel electromagnetic flow meter comprises a flow meter body and a plastic pipeline, the flow meter body is square in appearance, an adjusting cover is arranged at the input end of the flow meter body, and a sealing assembly is arranged in an inner cavity of the adjusting cover; on the basis of the square flow meter body, the adjusting cover is matched with the sealing assembly to achieve precise adaptation of plastic pipelines of different specifications, and meanwhile initial vortex is scattered through the adjustable rectangular opening to adjust water flow parameters; the double-symmetrical flow guide assembly further cuts the rotating water flow into uniform parallel flow states, and backflow interference is reduced in cooperation with the horn mouth design of the output end; the linkage pulling force assembly converts water flow pushing force into upward pulling force, the dead weight of equipment is actively shared, deformation and leakage of the plastic pipeline can be avoided without depending on a single light material, finally, cooperative improvement of flow field stability, pipeline adaptability and measurement precision is achieved, and the flow detection requirements of the plastic pipeline under multiple working conditions are met.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic flowmeter technology, specifically to a novel electromagnetic flowmeter. Background Technology

[0002] An electromagnetic flowmeter, disclosed in application number CN201510084844.3, includes a measuring conduit made of an insulating material whose magnetic permeability satisfies predetermined conditions; at least one pair of electrodes mounted on the measuring conduit and configured to sense an induced potential in the fluid flowing through it, so that the electromagnetic flowmeter can determine the flow rate of the fluid in the measuring conduit based on the induced potential. This electromagnetic flowmeter offers the following advantages: it requires no liner, is easy to install, has a light weight and high strength, and exhibits excellent corrosion resistance, electrical insulation, and thermal insulation properties.

[0003] Among the existing technologies, including the aforementioned patents, there are still several technical bottlenecks: Firstly, the inlet opening size of existing electromagnetic flowmeters is fixed, making it impossible to adapt to plastic pipes of different diameters. Furthermore, water flow is prone to forming irregular vortices after entering the flowmeter from a circular pipe, resulting in uneven flow velocity distribution. At the same time, it lacks an active adjustment structure for water pressure and flow rate, making it difficult to meet the fluid parameter adaptation requirements under different working conditions.

[0004] Secondly, traditional electromagnetic flowmeters often use a single flow guiding structure (such as a simple straight plate flow guide), which cannot effectively cut the rotating vortex inside a circular pipe, resulting in poor flow field stability. Moreover, the output port is mostly designed as a straight cylinder, which can easily cause backflow due to a sudden change in cross-section when the fluid flows out, thus interfering with the stable flow field inside the channel. This leads to a large deviation in the sensor detection data and makes it difficult to improve the measurement accuracy.

[0005] Third, most electromagnetic flow meters currently use lightweight materials to reduce their weight and adapt to plastic pipes, but they lack a weight-sharing design based on mechanical structure. The weight of the device will still directly affect the plastic pipe interface. Long-term use can easily lead to deformation of the plastic pipe, loosening of the interface, and even leakage of the medium. Especially under high flow conditions, the pressure on the pipe is greater, and the safety hazards are prominent. Summary of the Invention

[0006] The purpose of this invention is to provide a novel electromagnetic flowmeter that addresses the technical bottlenecks of existing technologies, such as poor pipe adaptability, unstable flow field, and high load-bearing pressure on plastic pipes. This invention utilizes an adjustable rectangular opening in the adjusting cover and enclosed component to adapt to plastic pipes of different diameters, breaking up initial eddies and adjusting flow parameters. A double-symmetric flow guide component cuts the rotating water flow into a uniform parallel flow pattern. A linkage pulling component converts the water flow thrust into an upward pulling force to share the device's weight. Combined with a square body and a flared output end, the flow field stability is optimized. Ultimately, this achieves precise adaptation to multiple operating conditions, a stable and interference-free flow field, and high measurement accuracy. It avoids plastic pipe deformation and leakage without relying on a single lightweight material, meeting the high-precision flow detection requirements in plastic pipe scenarios.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: The present invention provides a novel electromagnetic flowmeter, comprising: a flowmeter body and a plastic pipe. The flowmeter body is square in shape. The input end of the flowmeter body is provided with an adjustment cover. The inner cavity of the adjustment cover is provided with a sealing component. The sealing component is connected to the plastic pipe. The inner cavity of the flowmeter body is provided with two symmetrically arranged flow guiding components. The output end of the flowmeter body is provided with a linkage pulling component.

[0008] According to some embodiments of the present invention, both the input and output ends of the adjusting cover are provided with threaded connecting sleeves, and the other end of the threaded connecting sleeve is connected to a plastic pipe.

[0009] According to some embodiments of the present invention, the enclosed assembly includes multiple limiting slide rails, each of which is connected to the inner cavity sidewall of the adjusting cover. Each limiting slide rail is slidably connected to a sliding guide block, the other end of which is connected to an adjusting baffle. The adjusting baffles are arranged in a rectangular array within the inner cavity of the adjusting cover, and are slidably fitted together with each other. A slide rail is provided at the top of the adjusting cover, and an adjusting slider is provided within the inner cavity of the slide rail. The top of the adjusting slider has a toothed groove. One end of the adjusting slider is connected to an adjacent adjusting baffle, and the other end of the adjusting slider is threadedly connected to an adjusting screw. The adjusting screw is rotatably connected to the top of the adjusting cover, and the other end of the adjusting screw has an adjusting knob. A positioning cover is provided at the top of the adjusting cover, and a positioning strip is connected to the inner cavity of the positioning cover via a spring. One side of the positioning strip engages with the toothed groove, and the other side of the positioning strip has a pull rod.

[0010] According to some embodiments of the present invention, the end of the regulating cover connected to the plastic pipe is a circular connection port, and the end of the regulating cover connected to the flow meter body is a square connection port.

[0011] According to some embodiments of the present invention, the flow guiding component includes a plurality of longitudinal flow guiding strips arranged in an array, and each of the longitudinal flow guiding strips is provided with a plurality of transverse flow guiding strips. The transverse flow guiding strips are vertically and transversely connected to the longitudinal flow guiding strips, and both ends of the longitudinal flow guiding strips and the transverse flow guiding strips are provided with pointed ends. A flow guiding cone is connected at the intersection of the longitudinal flow guiding strips and the transverse flow guiding strips, and the flow guiding cone is provided with a gradually changing arc surface shape with a larger front end and a smaller rear end.

[0012] According to some embodiments of the present invention, the output port of the flow meter body is configured as a "trumpet mouth" with a front end contraction and a rear end expansion, and an arc-shaped groove is provided on the inner side wall of the output port of the flow meter body, and a hydraulic hole is provided on the inner side wall of the arc-shaped groove.

[0013] According to some embodiments of the present invention, the linkage tension assembly includes two arc-shaped force-bearing plates hinged to the inner cavity of the arc-shaped slot. The arc-shaped force-bearing plates are arc-shaped, and a hydraulic push rod is hinged to one end of each arc-shaped force-bearing plate. One end of the hydraulic push rod is movably inserted into the inner cavity of the hydraulic hole. A sealing piston is movably connected to one end of the hydraulic push rod located in the inner cavity of the hydraulic hole. A hydraulic oil tank is connected to the other end of the hydraulic hole. A transmission gear box is provided at the top of the hydraulic oil tank. The hydraulic oil tank is installed at the top of the flow meter body. Hydraulic oil is sealed in the inner cavity of the hydraulic oil tank. A pressure transmission cylinder is connected to the top of the hydraulic oil tank. A transmission piston rod is movably connected to the inner cavity of the pressure transmission cylinder. A U-shaped transmission rack is provided at the top of the transmission piston rod. The other end of the U-shaped transmission rack is movably inserted into the inner cavity of the transmission gear box. A gear and a wire rope connecting shaft are provided in the inner cavity of the transmission gear box. The transmission gear box is connected to the wire rope connecting shaft through the gear.

[0014] According to some embodiments of the present invention, a signal converter is provided at the top of the flow meter body, and a sensor excitation coil is provided in the inner cavity of the flow meter body, the sensor excitation coil being located between two flow guiding components.

[0015] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: 1. This invention provides an adjustment cover with a closed component at the input end of the flow meter body. The size of the rectangular opening formed by multiple adjustment baffles can be manually adjusted. This not only accurately adapts to plastic pipes of different diameters, but also instantly disperses the vortex when water enters through the interception effect of the rectangular opening, achieving initial uniform adjustment of the flow rate. At the same time, it can actively control the water pressure and flow rate of the water entering the inner cavity, greatly improving the adaptability of the equipment to different working conditions.

[0016] 2. This invention utilizes the longitudinal guide strips, transverse guide strips, and guide cones within the flow guiding assembly of the flow meter's internal cavity to cut the rotating vortex into multiple parallel water streams. Combined with the flow channel design of the square body, this further optimizes the smoothness of the flow field. Simultaneously, the horn-shaped design of the output port prevents backflow caused by abrupt changes in cross-section when the fluid flows out, reducing backflow intensity by 80%, significantly improving flow field stability, and ensuring more accurate detection data from the sensor's excitation coil.

[0017] 3. This invention utilizes a linkage tension component to generate an upward tension force through the thrust of water flowing over an arc-shaped load-bearing plate, via a hydraulic push rod, a sealed piston, a U-shaped transmission rack, and a steel wire rope connecting shaft. This creates an active load-bearing distribution on the equipment, effectively reducing the pressure of the equipment's own weight on the plastic pipes without relying on lightweight materials. This prevents pipe deformation and interface leakage, adapts to the low load-bearing characteristics of plastic pipes, and extends the service life of the pipes and equipment.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the present invention; Figure 3 This is a cross-sectional structural diagram of the flow meter body of the present invention; Figure 4 This is a schematic diagram of the output port structure of the flow meter body of the present invention; Figure 5 This is a schematic diagram of the internal structure of the closed component on the left side of the present invention; Figure 6 This is a schematic diagram of the internal structure of the closed component on the right side of the present invention; Figure 7 This is a schematic cross-sectional view of the linkage tension component of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the flow guiding component structure of the present invention; Figure 10 This is a schematic diagram of the adjusting baffle and adjusting slider structure of the present invention; Figure 11This is a schematic diagram of the movement process of the adjusting baffle of the present invention.

[0021] Explanation of symbols in the diagram: 001. Support rod; 1. Flowmeter body; 11. Signal converter; 12. Sensor excitation coil; 2. Adjusting cover; 21. Threaded connection sleeve; 3. Enclosed assembly; 31. Limiting slide rail; 32. Sliding guide block; 33. Adjusting baffle; 34. Adjusting slider; 35. Adjusting screw; 36. Adjusting knob; 37. Positioning cover; 38. Positioning strip; 4. Flow guiding components; 41. Longitudinal flow guide strip; 42. Transverse flow guide strip; 43. Flow guide cone; 5. Linkage tension assembly; 51. Arc-shaped force plate; 52. Hydraulic push rod; 53. Sealed piston; 54. Hydraulic oil tank; 541. Transmission gearbox; 55. Pressure transmission cylinder; 56. Transmission piston rod; 57. U-shaped transmission rack; 542. Wire rope connecting shaft. Detailed Implementation To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] Existing electromagnetic flowmeters still face several technical bottlenecks in practical applications: Firstly, the inlet opening size of existing electromagnetic flowmeters is fixed, making it impossible to adapt to plastic pipes of different diameters. Furthermore, water flow is prone to forming irregular vortices after entering the flowmeter from a circular pipe, resulting in uneven flow velocity distribution. At the same time, it lacks an active adjustment structure for water pressure and flow rate, making it difficult to meet the fluid parameter adaptation requirements under different working conditions.

[0023] Secondly, traditional electromagnetic flowmeters often use a single flow guiding structure (such as a simple straight plate flow guide), which cannot effectively cut the rotating vortex inside a circular pipe, resulting in poor flow field stability. Moreover, the output port is mostly designed as a straight cylinder, which can easily cause backflow due to a sudden change in cross-section when the fluid flows out, thus interfering with the stable flow field inside the channel. This leads to a large deviation in the sensor detection data and makes it difficult to improve the measurement accuracy.

[0024] Third, most electromagnetic flow meters currently use lightweight materials to reduce their weight and adapt to plastic pipes, but they lack a weight-sharing design based on mechanical structure. The weight of the device will still directly affect the plastic pipe interface. Long-term use can easily lead to deformation of the plastic pipe, loosening of the interface, and even leakage of the medium. Especially under high flow conditions, the pressure on the pipe is greater, and the safety hazards are prominent.

[0025] To solve these problems, such as Figures 1-11 As shown, this invention provides a novel electromagnetic flowmeter, comprising: a flowmeter body 1 and a plastic pipe. The flowmeter body 1 is square in shape. An adjusting cover 2 is provided at the input end of the flowmeter body 1. A sealing component 3 is provided inside the adjusting cover 2, and the sealing component 3 is connected to the plastic pipe. Two symmetrically arranged flow guiding components 4 are provided inside the flowmeter body 1. A linkage tension component 5 is provided at the output end of the flowmeter body 1. The square shape of the flowmeter body 1 optimizes the flow field and reduces eddy current generation. The adjusting cover 2 and the sealing component 3 work together to achieve pipe adaptation and water flow pretreatment. The flow guiding components 4 further stabilize the flow, and the linkage tension component 5 shares the weight of the equipment, jointly adapting to the usage requirements of the plastic pipe and improving measurement stability. Both the input and output ends of the adjusting cover 2 are provided with threaded connecting sleeves 21, the other end of which is connected to the plastic pipe. The threaded connecting sleeves 21 can achieve a secure and sealed connection between the adjusting cover 2 and the plastic pipe, preventing fluid leakage. Furthermore, the threaded connection method is convenient to install, adapting to the docking requirements of different specifications of plastic pipes and improving installation versatility.

[0026] Specifically, such as Figure 5 and Figure 6As shown, in this embodiment, the enclosing component 3 includes multiple limiting slide rails 31 connected to the inner wall of the square-structured adjustment cover 2, and the limiting slide rails 31 are parallel to the sides of the square-structured adjustment cover 2. Each limiting slide rail 31 is slidably connected to a sliding guide block 32, and the other end of each sliding guide block 32 is connected to an adjusting baffle 33. The multiple adjusting baffles 33 are arranged in a rectangular array within the inner cavity of the adjustment cover 2, and the multiple adjusting baffles 33 are slidably fitted together. Each adjusting baffle 33 is formed by connecting an isosceles triangle and a rectangle. The irregular shape formed results in multiple adjusting baffles 33 arranged such that the sides of the isosceles triangular portions of the adjusting baffles 33 correspond to each other to form rectangular openings. A slide is provided at the top of the adjusting cover 2, and an adjusting slider 34 is provided inside the slide. The top of the adjusting slider 34 has a toothed groove, and one end of the adjusting slider 34 is connected to one of the multiple adjusting baffles 33. The movement of the adjusting slider 34 can drive the adjusting baffle 33 connected to the adjusting slider 34 to move in the same direction. When one of the adjusting baffles 33 moves, the sides of the isosceles triangular portions... Squeezing the waist of the isosceles triangle portion of another adjusting baffle 33 causes multiple adjusting baffles 33 to move synchronously, thereby ensuring that the opening size of the multiple adjusting baffles 33 after unfolding matches the existing water pressure inside the pipe. The other end of the adjusting slider 34 is threadedly connected to an adjusting screw 35, which is rotatably connected to the top of the adjusting cover 2. The other end of the adjusting screw 35 is equipped with an adjusting knob 36. The top of the adjusting cover 2 is equipped with a positioning cover 37, the inner cavity of which is connected to a positioning strip 38 via a spring. One side of the positioning strip 38 engages with a toothed groove, fixing... On the other side of the positioning bar 38, there is a pull rod; the limiting slide rail 31 cooperates with the sliding guide block 32 to realize the smooth sliding of the adjusting baffle 33. The adjusting knob 36 drives the adjusting screw 35 to move the adjusting slider 34, which can accurately adjust the size of the rectangular opening formed by multiple adjusting baffles 33 to adapt to plastic pipes of different diameters and flow requirements. The rectangular opening can disperse water flow eddies. The positioning bar 38 engages with the toothed groove to fix the adjusted position, avoiding water flow impact that causes the opening to shift, and ensuring the stability of the pretreatment effect of the water flow entering the inner cavity of the flowmeter body 1. The end of the adjusting cover 2 connected to the plastic pipe is a circular connection port, and the end of the adjusting cover 2 connected to the flowmeter body 1 is a square connection port. The circular connection port can be precisely connected to the plastic pipe, and the square connection port is adapted to the square flowmeter body, realizing a smooth transition from the circular pipe to the square flow channel, reducing the turbulence caused by the sudden change in cross-sectional shape, and providing regulation for the steady flow of water after entering the body.

[0027] In this embodiment, the flow guiding component 4 includes multiple longitudinal flow guiding strips 41 arranged in an array. Each longitudinal flow guiding strip 41 is provided with multiple transverse flow guiding strips 42. The transverse flow guiding strips 42 are vertically and transversely connected to the longitudinal flow guiding strips 41. Both ends of the longitudinal flow guiding strips 41 and the transverse flow guiding strips 42 are set with pointed ends. A flow guiding cone 43 is connected at the intersection of the longitudinal flow guiding strips 41 and the transverse flow guiding strips 42. The flow guiding cone 43 is set with a gradually changing arc surface, which is larger at the front end and smaller at the rear end. The grid structure formed by the vertical and transverse flow guiding strips can cut the rotating vortex into multiple parallel water flows. The pointed end setting reduces water flow resistance. The gradually changing arc surface design of the flow guiding cone 43 guides the water flow to flow smoothly, further optimizing the flow field uniformity and providing a stable flow state for accurate measurement. The output port of the flowmeter body 1 is designed as a "horn mouth" with a narrow front end and an expanding rear end. An arc-shaped groove is provided on the inner wall of the output port of the flowmeter body 1, and a hydraulic hole is provided on the inner wall of the arc-shaped groove. The horn mouth design can prevent backflow caused by the sudden expansion of the cross-section after the fluid flows out of the square flow channel, reducing the interference of backflow on the flow field of the inner cavity. The arc-shaped groove provides a stable installation space for the linkage tension component, and the hydraulic hole ensures the sealing and transmission efficiency of the hydraulic transmission, taking into account both the stability of the flow field and the adaptability of the mechanical structure.

[0028] Specifically, the linkage tension assembly 5 includes two arc-shaped force-bearing plates 51 hinged to the inner cavity of the arc-shaped slot. The arc-shaped force-bearing plates 51 are arc-shaped, and a hydraulic push rod 52 is hinged to one end of each arc-shaped force-bearing plate 51. One end of the hydraulic push rod 52 is movably inserted into the inner cavity of the hydraulic hole. A sealing piston 53 is movably connected to the end of the hydraulic push rod 52 located in the inner cavity of the hydraulic hole. A hydraulic oil tank 54 is connected to the other end of the hydraulic hole. A transmission gearbox 541 is provided at the top of the hydraulic oil tank 54. The hydraulic oil tank 54 is installed at the top of the flow meter body 1. The inner cavity of the hydraulic oil tank 54 is sealed with hydraulic oil. A pressure transmission cylinder 55 is connected to the top of the hydraulic oil tank 54. A transmission piston rod 56 is movably connected to the inner cavity of the pressure transmission cylinder 55. A U-shaped transmission rack 57 is provided at the top of the transmission piston rod 56. The other end of the U-shaped transmission rack 57 is movably connected to the other end of the transmission rack 57. The transmission gearbox 541 is connected to the inner cavity of the transmission gearbox 541. The inner cavity of the transmission gearbox 541 is equipped with gears and a wire rope connecting shaft 542. The top end of the wire rope connecting shaft 542 can be connected to a wire rope for traction of the equipment. The other end of the wire rope can be connected to an arc-shaped support rod 001 to distribute the weight of the equipment to both ends of the pipe, so as to avoid excessive bending of the plastic pipe caused by the weight of the equipment. The transmission gearbox 541 is connected to the wire rope connecting shaft 542 through the gear. The thrust generated when the water flows through the arc-shaped force plate is transmitted to the hydraulic oil through the hydraulic push rod and the sealed piston, which in turn pushes the transmission piston rod and the U-shaped transmission rack to move. The gear drives the wire rope connecting shaft to generate an upward pulling force, actively sharing the weight of the equipment, avoiding the weight from directly compressing the plastic pipe, preventing the pipe from deforming and leaking, and adapting to the low load-bearing characteristics of the plastic pipe.

[0029] The flow meter body 1 has a signal converter 11 at its top and a sensor excitation coil 12 inside its cavity. The sensor excitation coil 12 is located between two flow guiding components 4. The sensor excitation coil is located between the two flow guiding components and can detect the uniform water flow after double flow stabilization. The signal converter can accurately convert the detected electromagnetic signal into flow data, which significantly improves the accuracy and reliability of the measurement data.

[0030] Working principle: In use, water flows from the pipe into the input end of the flow meter body 1 and then into the inner cavity of the regulating cover 2. Before this, the operator can manually pull the lever to separate the positioning strip 38 from the top of the regulating slider 34, thus disengaging the positioning strip 38 from the regulating slider 34. Then, the adjusting knob 36 is rotated, which drives the adjusting screw 35 to rotate. Through the interaction between the threads, the adjusting screw 35 drives the regulating slider 34 to slide in the inner cavity of the groove, and moves the adjusting baffle 33 connected to the regulating slider 34. During this process, the regulating cover 2, the limiting slide rail 31, and the sliding... The guide block 32 is positioned so that multiple adjusting baffles 33 slide simultaneously, forming an adjustable rectangular opening between them. When water flows from the circular pipe through the rectangular opening, it is blocked by the four sides of the rectangle, and the vortex is instantly dispersed, thus achieving initial uniform regulation of the water flow velocity. Furthermore, personnel can adjust the size of the corresponding rectangular opening according to the diameter of different pipes, allowing the equipment to adapt to the water flow adjustment settings of different pipe sizes. Moreover, if it is necessary to adjust the water pressure and flow, the water pressure and flow rate entering the inner cavity of the flow meter body 1 can be controlled to a certain extent by adjustment.

[0031] After passing through the rectangular opening, the water flows into the inner cavity of the flow meter body 1. After passing through the tip of the guide cone 43, the transverse guide strip 42, and the longitudinal guide strip 41, the water flow is cut and divided, so that the vortex-like water flow rotating in the circular pipe is cut into multiple parallel water flows. The square shape of the inner cavity of the flow meter body 1 allows the water flow to flow more smoothly and at a uniform speed. In order to avoid the negative pressure formed when the water flows at high speed from the tail end of the bell mouth, affecting the water flow velocity in the inner cavity of the flow meter body 1, a guide component 4 is also set at the output port of the flow meter body 1 to improve the stability of the water flow in the flow meter body 1 and ensure that the data during the detection is more accurate. The water flow velocity is detected by activating the sensor excitation coil 12; After detection, the water flow enters the output port of the flow meter body 1. Since the output port of the flow meter body 1 is horn-shaped, it can prevent backflow caused by the sudden expansion of the cross-section after the fluid flows out of the square flow channel. Backflow will interfere with the stable flow field in the flow channel. The gradual diffusion section can reduce the backflow intensity at the outlet by 80%, further ensuring the stability of the measurement signal. During the process, when the water flows through the arc-shaped force plate 51, it pushes the two arc-shaped force plates 51 to move into the inner cavity of the arc-shaped slot. When the arc-shaped force plate 51 moves to the top, it pushes the hydraulic push rod 52 and the sealing piston 53 to move into the inner cavity of the hydraulic hole. During this process, the hydraulic oil in the hydraulic hole and the inner cavity of the hydraulic oil tank 54 is squeezed. After the hydraulic pressure increases, it pushes the U-shaped transmission rack 57 in conjunction with the gear meshing to drive the wire rope connecting shaft 542 to move into the inner cavity of the transmission gear box 541. The top of the wire rope connecting shaft 542 is connected to the wire rope. When it is pulled down, it can give the equipment a force to move to the top, thereby reducing the pressure of the equipment weight on the pipeline.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A novel electromagnetic flowmeter, characterized in that, include: The flow meter body (1) and the plastic pipe are provided. The flow meter body (1) is square in shape. The input end of the flow meter body (1) is provided with an adjustment cover (2). The inner cavity of the adjustment cover (2) is provided with a sealing component (3). The sealing component (3) is connected to the plastic pipe. The inner cavity of the flow meter body (1) is provided with two symmetrically arranged flow guiding components (4). The output end of the flow meter body (1) is provided with a linkage pulling component (5).

2. The novel electromagnetic flowmeter according to claim 1, characterized in that, The input and output ends of the regulating cover (2) are both provided with threaded connecting sleeves (21), and the other end of the threaded connecting sleeves (21) is connected to a plastic pipe.

3. A novel electromagnetic flowmeter according to claim 2, characterized in that, The enclosed component (3) includes multiple limiting slide rails (31), all of which are connected to the inner cavity sidewall of the adjustment cover (2). Each of the multiple limiting slide rails (31) is slidably connected to a sliding guide block (32), and the other end of each sliding guide block (32) is connected to an adjustment baffle (33). The multiple adjustment baffles (33) are arranged in a rectangular array in the inner cavity of the adjustment cover (2), and the multiple adjustment baffles (33) are slidably fitted together with each other. The top of the adjustment cover (2) is provided with a slide rail, and the inner cavity of the slide rail is provided with an adjustment slider (34). The top of the adjustment slider (34) is provided with a toothed groove. One end of the adjustment slider (34) is connected to the adjacent adjustment baffle (33), and the other end of the adjustment slider (34) is threadedly connected to an adjustment screw (35). The adjustment screw (35) is rotatably connected to the top of the adjustment cover (2), and the other end of the adjustment screw (35) is provided with an adjustment knob (36). The top of the adjustment cover (2) is provided with a positioning cover (37), and the inner cavity of the positioning cover (37) is connected to a positioning strip (38) by a spring. One side of the positioning strip (38) engages with the tooth groove, and the other side of the positioning strip (38) is provided with a pull rod.

4. A novel electromagnetic flowmeter according to claim 3, characterized in that, The end of the regulating cover (2) connected to the plastic pipe is a circular connection port, and the end of the regulating cover (2) connected to the flow meter body (1) is a square connection port.

5. A novel electromagnetic flowmeter according to claim 4, characterized in that, The flow guiding component (4) includes multiple longitudinal flow guiding strips (41), which are arranged in an array. Each of the longitudinal flow guiding strips (41) is provided with multiple transverse flow guiding strips (42). The transverse flow guiding strips (42) are vertically and transversely connected to the longitudinal flow guiding strips (41). Both ends of the longitudinal flow guiding strips (41) and the transverse flow guiding strips (42) are pointed. The longitudinal guide strip (41) and the transverse guide strip (42) are connected together at the staggered connection position with a guide cone (43), and the guide cone (43) is set in a gradually changing arc shape with a large front end and a small rear end.

6. A novel electromagnetic flowmeter according to claim 1, characterized in that, The output port of the flow meter body (1) is set in the shape of a "horn mouth" with the front end contracting and the rear end expanding. An arc-shaped slot is provided on the inner side wall of the output port of the flow meter body (1), and a hydraulic hole is provided on the inner side wall of the arc-shaped slot.

7. A novel electromagnetic flowmeter according to claim 6, characterized in that, The linkage tension assembly (5) includes two arc-shaped force plates (51) hinged to the inner cavity of the arc-shaped slot. The arc-shaped force plates (51) are arranged in an arc shape. One end of the arc-shaped force plate (51) is hinged to a hydraulic push rod (52). One end of the hydraulic push rod (52) is movably inserted into the inner cavity of the hydraulic hole. The end of the hydraulic push rod (52) located in the inner cavity of the hydraulic hole is movably connected to a sealing piston (53). The other end of the hydraulic hole is connected to a hydraulic oil tank (54). The top of the hydraulic oil tank (54) is provided with a transmission gear box (541). The hydraulic oil tank (54) is installed at the top of the flow meter body (1). The inner cavity of the hydraulic oil tank (54) is sealed with hydraulic oil. The top of the hydraulic oil tank (54) is connected to a pressure transmission cylinder (55). The inner cavity of the pressure transmission cylinder (55) is movably connected to a transmission piston rod (56). The top of the transmission piston rod (56) is provided with a U-shaped transmission rack (57). The other end of the U-shaped transmission rack (57) is movably inserted into the inner cavity of the transmission gear box (541). The inner cavity of the transmission gear box (541) is provided with a gear and a wire rope connecting shaft (542). The transmission gear box (541) is connected to the wire rope connecting shaft (542) through the gear.

8. A novel electromagnetic flowmeter according to claim 7, characterized in that, The top of the flow meter body (1) is provided with a signal converter (11), and the inner cavity of the flow meter body (1) is provided with a sensor excitation coil (12), which is located between two flow guiding components (4).

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