A vortex flowmeter

Abstract

The utility model discloses a vortex shedding flowmeter relates to vortex shedding flowmeter technical field, including equipment cover, circuit sealing joint, signal line, input pipeline, equipment main part, output pipeline and vortex street generator, equipment main part includes the notch of being set up on the lateral wall of the lower shell both ends of lower shell, is convenient for the gap of installing with measurement flow channel, measurement flow channel is provided with two, and is located at the both sides of the frame body inside lower shell respectively, two measurement flow channels are fixedly installed with input pipeline and output pipeline, and the notch is set up in the lateral wall of lower shell both ends, can accurate positioning and steady assembly measurement flow channel, and measurement flow channel sets up two and is located at the both sides of the frame body inside lower shell respectively, and is fixedly installed with input pipeline, output pipeline, can reduce the disturbance when fluid flows, and the vortex street generator of the axis in measurement flow channel can stably produce vortex street, and the ceramic sheet is embedded in the measurement ceramic sheet in the ceramic sheet reservation slot, and the stability and accuracy of flow measurement are greatly improved in ceramic sheet and worm street sound generator cooperation.

Description

Technical Field

[0001] This utility model specifically relates to the field of vortex flow meter technology, and specifically to a vortex flow meter. Background Technology

[0002] As a core device in the field of industrial fluid measurement, vortex flowmeters suffer from several drawbacks. Existing vortex flowmeters often use simple socket or snap-fit ​​connections for their components, resulting in poor assembly stability. Long-term exposure to fluid pressure and vibration can easily lead to component loosening. The connection between the measuring channel and the equipment housing lacks a sealing structure, making leakage of the measured medium prone to occur and affecting measurement accuracy. The lack of reliable sealing protection at the wiring joints allows external dust and moisture to easily enter the equipment, damaging internal signal transmission components and increasing the equipment failure rate. Furthermore, the improper fixing method between the vortex generator and the measuring channel can easily lead to axial misalignment, making it impossible to ensure stable fluid flow through the generator and further reducing the accuracy of flow measurement, thus failing to meet the requirements for long-term stable operation in industrial settings. Utility Model Content

[0003] The purpose of this utility model is to provide a vortex flow meter. In this device, the bolted connection between the top cover and the lower shell of the main body improves the overall assembly stability and prevents the parts from loosening after long-term use; the sealing joint of the line is fixed with the sealant of the top cover and the signal line is tightly attached, which effectively prevents external dust and moisture from entering and protects the internal components; the welding and fixing of the measuring channel to the lower shell and the double sealing of the sealing ring solve the problems mentioned above in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A vortex flow meter includes a device cover, a line sealing joint, a signal line, an input pipeline, a device body, an output pipeline, and a vortex generator; wherein the device body includes a lower shell with notches on the side walls at both ends of the lower shell to facilitate installation with the measuring flow channels; two measuring flow channels are provided, and are respectively located on both sides of the frame inside the lower shell; the two measuring flow channels are respectively fixedly installed with the input pipeline and the output pipeline.

[0005] As a further technical solution of this utility model, a vortex generator is provided at the center of the measuring channel. The vortex generator is a trapezoidal column with its axis collinear with the axis of the measuring channel. The vortex generator is placed vertically inside the measuring channel and welded to the inner wall of the measuring channel. Its height is consistent with the inner diameter of the measuring channel.

[0006] As a further technical solution of this utility model, a ceramic plate is provided in the middle of the left and right side walls of the vortex generator, and a measuring ceramic plate is embedded in each ceramic plate in the pre-reserved slot. The inner side of the measuring ceramic plate is flush with the side wall of the vortex generator. Each measuring ceramic plate is fixedly installed in the pre-reserved slot of the ceramic plate.

[0007] As a further technical solution of this utility model, the line sealing connector includes an outer cylinder, an inner core, and a sealing rubber ring; the outer cylinder has an annular protrusion in the middle, and the lower part is screwed into the mounting hole of the equipment cover, and the annular protrusion fits against the upper surface of the equipment cover; the inner core is coaxially placed inside the outer cylinder, and the outer wall is fitted with an O-ring sealing rubber ring that fits against the inner wall of the outer cylinder; the signal line passes through the central channel of the inner core, and the top of the outer cylinder is fitted with a dust cover, which fits against the outer wall of the outer cylinder and the upper surface of the annular protrusion.

[0008] As a further technical solution of this utility model, the top of the lower shell and the bottom of the upper cover are fixedly installed by bolts; extension plates are provided on the side walls at both ends of the upper cover, and the extension plates are matched with the notches opened at both ends of the lower shell.

[0009] Compared with the prior art, the beneficial effects of this utility model are: This invention features notches on the side walls at both ends of the lower shell, which mate with the extension plates at both ends of the upper cover. The top of the lower shell is fixed to the bottom of the upper cover with bolts, ensuring precise positioning and stable assembly of the measuring flow channel. Two measuring flow channels are provided, located on either side of the internal frame of the lower shell, and fixedly installed with the input and output pipes, reducing disturbance during fluid flow. Furthermore, a vortex generator at the center of the measuring flow channel is collinear with and perpendicularly welded to the inner wall, with its height matching the inner diameter of the measuring flow channel, ensuring stable vortex generation. A measuring ceramic plate is embedded in a pre-drilled slot in the middle of the left and right side walls of the vortex generator, with its inner surface flush with and fixedly installed, accurately capturing vortex signals. This multi-layered structure significantly improves the stability and accuracy of flow measurement. This utility model features an annular protrusion in the middle of the outer cylinder of the line sealing connector. The lower part of the protrusion is screwed into the mounting hole of the equipment cover, and the annular protrusion fits against the upper surface of the equipment cover. The inner core is coaxially placed inside the outer cylinder, and the outer wall is fitted with an O-ring sealing rubber ring that fits against the inner wall of the outer cylinder. The dust cover fitted on the top of the outer cylinder fits against the outer wall of the outer cylinder and the upper surface of the annular protrusion. This structure can effectively prevent external dust, moisture and other impurities from entering the equipment. At the same time, the bolted connection between the equipment cover and the lower shell further enhances the overall sealing effect of the equipment, prevents leakage of the measured medium, protects the signal line and internal components, and extends the service life of the equipment. In this invention, the notches at both ends of the lower shell not only facilitate the installation of the measuring channel, but also allow for quick positioning in conjunction with the extension plate of the upper cover, reducing assembly difficulty. The upper cover and lower shell are fixed with bolts, the measuring channel is fixedly installed with the input and output pipelines, the vortex generator is welded to the inner wall of the measuring channel, and the measuring ceramic plate is fixed in the pre-reserved slot of the ceramic plate. All components adopt reliable fixing methods, reducing the risk of component loosening due to vibration, fluid pressure and other factors during long-term use, significantly improving the overall structural stability of the equipment, and ensuring stable operation of the equipment under complex working conditions. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0011] Figure 2 This utility model Figure 1 A schematic diagram of the rear structure.

[0012] Figure 3 This utility model Figure 1 A schematic diagram of the internal structure.

[0013] Figure 4 This is a cross-sectional view of the internal structure of this utility model.

[0014] In the diagram: 1-Equipment cover, 2-Line sealing connector, 3-Signal line, 4-Input pipeline, 5-Equipment body, 50-Lower shell, 51-Measuring flow channel, 52-Sealing ring, 53-Measuring ceramic plate, 6-Output pipeline, 6-Spiral street sound generator, 8-Ceramic plate reserved slot. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 In this embodiment of the present invention, a vortex flow meter includes an equipment cover 1, a line sealing joint 2, a signal line 3, an input pipe 4, an equipment body 5, an output pipe 6, and a vortex generator 7; wherein the equipment body 5 includes a lower shell 50, and notches are provided on the side walls at both ends of the lower shell 50 to facilitate installation with the measuring flow channels 51; two measuring flow channels 51 are provided, and are respectively located on both sides of the frame inside the lower shell 50; the two measuring flow channels 51 are respectively fixedly installed with the input pipe 4 and the output pipe 6; By adopting the above technical solution, notches are opened on the side walls at both ends of the lower shell 50 to cooperate with the extension plates at both ends of the upper cover 1. At the same time, the top of the lower shell 50 and the bottom of the upper cover 1 are fixedly installed with bolts, which can accurately position and securely assemble the measuring flow channel 51. Furthermore, two measuring flow channels 51 are set and located on both sides of the internal frame of the lower shell 50 respectively, and are fixedly installed with the input pipe 4 and the output pipe 6, which can reduce the disturbance when the fluid flows through.

[0017] In this embodiment, a vortex generator 7 is provided at the center of the measuring channel 51. The vortex generator 7 is a trapezoidal column with its axis collinear with the axis of the measuring channel 51. The vortex generator 7 is placed vertically inside the measuring channel 51 and welded to the inner wall of the measuring channel 51. Its height is the same as the inner diameter of the measuring channel 51. In this embodiment, the vortex generator 7 has a ceramic plate reserved slot 8 in the middle of the left and right side walls. A measuring ceramic plate 53 is embedded in each ceramic plate reserved slot 8, and the inner side is flush with the side wall of the vortex generator 7. Each measuring ceramic plate 53 is fixedly installed in the ceramic plate reserved slot 8. By adopting the above technical solution, the trapezoidal column of the vortex generator 7 at the inner axis of the measuring channel 51 is collinear with the axis of the measuring channel 51 and welded perpendicularly to the inner wall. Its height is consistent with the inner diameter of the measuring channel 51, which can stably generate vortex streets. The ceramic plates in the middle of the left and right side walls of the vortex generator 7 have reserved slots 8 for embedding measuring ceramic plates 53. The inner side is flush with the side wall of the vortex generator 7 and is fixedly installed, which can accurately capture vortex signals. The combination of multiple structures greatly improves the stability and accuracy of flow measurement.

[0018] Furthermore, the line sealing connector 2 includes an outer cylinder, an inner core, and a sealing rubber ring; the outer cylinder has an annular protrusion in the middle, and the lower part is screwed into the mounting hole of the equipment cover 1, with the annular protrusion fitting against the upper surface of the equipment cover 1; the inner core is coaxially placed inside the outer cylinder, and the outer wall is fitted with an O-ring sealing rubber ring that fits against the inner wall of the outer cylinder; the signal line 3 passes through the central channel of the inner core, and a dust cover is fitted on the top of the outer cylinder, with the dust cover fitting against the outer wall of the outer cylinder and the upper surface of the annular protrusion; In this embodiment, the top of the lower shell 50 is fixedly installed to the bottom of the upper cover 1 by bolts; extension plates are provided on the side walls at both ends of the upper cover 1, and the extension plates are matched with the notches opened at both ends of the lower shell 50. By adopting the above technical solution, the notches at both ends of the lower shell 50 not only facilitate the installation of the measuring channel 51, but also cooperate with the extension plate of the upper cover 1 to achieve rapid positioning and reduce assembly difficulty; the upper cover 1 and the lower shell 50 are fixed with bolts, the measuring channel 51 is fixedly installed with the input pipe 4 and the output pipe 6, the vortex generator 7 is welded to the inner wall of the measuring channel 51, and the measuring ceramic plate 53 is fixed in the pre-reserved slot 8 of the ceramic plate. All components adopt reliable fixing methods, which reduces the risk of component loosening caused by vibration, fluid pressure and other factors during long-term use, significantly improves the overall structural stability of the equipment, and ensures stable operation of the equipment under complex working conditions.

[0019] The working principle of this invention is as follows: A vortex generator with a specific geometric profile is vertically arranged at the axis of the internal measuring channel. When the measured medium flows into the vortex generator through the input pipe, the fluid boundary layer undergoes periodic separation at the rear of the generator, forming two alternating rows of vortices rotating in opposite directions. The shedding frequency of these vortices is linearly positively correlated with the fluid velocity. A high-sensitivity sensing element is installed at the opening on the side of the vortex generator. This detection unit captures the periodic pressure pulsations or velocity changes generated by the vortex shedding in real time, converting the mechanical vibration signal into a change in charge at a corresponding frequency. After signal processing and flow calculation, the flow rate of the measured medium in the internal measuring tube at that moment can be obtained.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vortex flow meter, characterized in that: The device includes a cover (1), a line sealing connector (2), a signal line (3), an input pipe (4), a main body (5), an output pipe (6), and a vortex generator (7); wherein the main body (5) includes a lower shell (50), and notches are provided on the side walls at both ends of the lower shell (50) to facilitate installation with the measuring channel (51); there are two measuring channels (51), which are located on both sides of the frame inside the lower shell (50); the two measuring channels (51) are fixedly installed with the input pipe (4) and the output pipe (6) respectively.

2. The vortex flow meter according to claim 1, characterized in that: The measuring channel (51) is equipped with a vortex generator (7) at its center. The vortex generator (7) is a trapezoidal column with its axis collinear with the axis of the measuring channel (51). The vortex generator (7) is placed vertically inside the measuring channel (51) and welded to the inner wall of the measuring channel (51). Its height is consistent with the inner diameter of the measuring channel (51).

3. The vortex flow meter according to claim 1, characterized in that: The vortex generator (7) has a ceramic plate reserved slot (8) in the middle of the left and right side walls. A measuring ceramic plate (53) is embedded in each ceramic plate reserved slot (8), and the inner side is flush with the side wall of the vortex generator (7). Each measuring ceramic plate (53) is fixedly installed in the ceramic plate reserved slot (8).

4. A vortex flow meter according to claim 3, characterized in that: The line sealing connector (2) includes an outer cylinder, an inner core and a sealing rubber ring; the outer cylinder has an annular protrusion in the middle and the lower part is screwed into the mounting hole of the equipment cover (1), and the annular protrusion is in contact with the upper surface of the equipment cover (1); the inner core is coaxially placed inside the outer cylinder, and the outer wall is fitted with an O-ring sealing rubber ring that is in contact with the inner wall of the outer cylinder; the signal line (3) passes through the central channel of the inner core, and the top of the outer cylinder is fitted with a dust cover, which is in contact with the outer wall of the outer cylinder and the upper surface of the annular protrusion.

5. A vortex flow meter according to claim 4, characterized in that: The top of the lower shell (50) is fixed to the bottom of the upper cover (1) by bolts; an extension plate is provided on the side wall at both ends of the upper cover (1), and the extension plate is matched with the notch opened at both ends of the lower shell (50).

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