Vortex shedding flowmeter device

Abstract

The utility model discloses a vortex shedding flowmeter device, relates to the technical field of flowmeter equipment, and mainly aims to provide a device capable of preventing electromagnetic interference of a vortex shedding flowmeter. According to the main technical scheme, the vortex shedding flowmeter device comprises a body and wiring interfaces, the wiring interfaces comprise an input interface, an output interface and a grounding interface, the wiring interfaces are arranged in a shell, one end of a first connecting line is connected to the input interface, and one end of a second connecting line is connected to the output interface; the capacitor component comprises a first capacitor, a second capacitor, a third connecting line and a fourth connecting line, one end of the third connecting line is connected to the input interface, the other end of the third connecting line is connected to the grounding interface, the first capacitor is arranged on the third connecting line, one end of the fourth connecting line is connected to the output interface, and the other end of the fourth connecting line is connected to the grounding interface; the second capacitor is arranged on the fourth connecting line. The flow meter is mainly used for metering flow.

Description

Technical Field

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

[0002] A vortex flow meter is a high-precision measuring instrument used in production sites. Based on the Karman vortex street principle, it measures the volumetric flow rate, standard volumetric flow rate, or mass flow rate of gases, steam, or liquids. It is mainly used for flow measurement of fluids in industrial pipelines, such as gases, liquids, and steam. Its characteristics include low pressure loss, a wide measuring range, and high accuracy. The electrical connection of a vortex flow meter requires proper grounding, a minimum distance of 300mm from the power cable, and avoids parallel wiring.

[0003] However, in actual use, because part of the signal cable is used in parallel with the power line, and some power cables have frequency converter outputs, there is a lot of electromagnetic interference. The DCS flow meter in the main control room displays ####.##. Therefore, electromagnetic interference interferes with the accuracy of the flow meter and affects its accuracy.

[0004] The existing method involves installing an anti-interference magnetic ring by grounding one end or both ends, but this does not solve the problems of flow meter display and interference. Utility Model Content

[0005] In view of this, the present invention provides a vortex flow meter device, the main purpose of which is to provide a vortex flow meter device that can prevent electromagnetic interference.

[0006] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0007] This utility model embodiment provides a vortex flow meter device, which includes:

[0008] The main body includes a housing, a wiring interface, a first connecting line, and a second connecting line. The wiring interface includes an input interface, an output interface, and a grounding interface. The wiring interface is disposed inside the housing. One end of the first connecting line is connected to the input interface, and one end of the second connecting line is connected to the output interface.

[0009] The capacitor component includes a first capacitor, a second capacitor, a third connecting line, and a fourth connecting line. One end of the third connecting line is connected to the input interface, and the other end is connected to the ground interface. The first capacitor is disposed on the third connecting line. One end of the fourth connecting line is connected to the output interface, and the other end is connected to the ground interface. The second capacitor is disposed on the fourth connecting line.

[0010] Furthermore, both the first capacitor and the second capacitor are polypropylene capacitors.

[0011] Furthermore, the third connection line includes a first capacitor line and a second capacitor line. One end of the first capacitor line is connected to the input interface, and the other end is connected to one end of the first capacitor. One end of the second capacitor line is connected to the ground interface, and the other end is connected to the other end of the first capacitor.

[0012] Furthermore, the fourth connection line includes a third capacitor line and a fourth capacitor line. One end of the third capacitor line is connected to the input interface, and the other end is connected to one end of the second capacitor. One end of the fourth capacitor line is connected to the ground interface, and the other end is connected to the other end of the second capacitor.

[0013] Furthermore, a data acquisition module is provided, which is connected to the first connection line and the second connection line.

[0014] Furthermore, the data acquisition module has a positive terminal and a negative terminal, with the positive terminal connected to the first connecting line and the negative terminal connected to the second connecting line.

[0015] Compared with the prior art, the present invention has the following technical effects:

[0016] In the technical solution provided by this utility model embodiment, the main body is used to detect flow rate. The main body includes a shell, a wiring interface, a first connecting line, and a second connecting line. The wiring interface includes an input interface, an output interface, and a grounding interface. The wiring interface is located inside the shell. One end of the first connecting line is connected to the input interface, and one end of the second connecting line is connected to the output interface. The capacitor component is used to filter out high-frequency noise. The capacitor component includes a first capacitor, a second capacitor, a third connecting line, and a fourth connecting line. One end of the third connecting line is connected to the input interface, and the other end is connected to the grounding interface. The first capacitor is located on the third connecting line. One end of the fourth connecting line is connected to the output interface, and the other end is connected to the grounding interface. The second capacitor is located on the fourth connecting line. Compared with the prior art, which installs an anti-interference magnetic ring by grounding one end or both ends, the problem of flow meter display and interference is not solved. In this technical solution, by setting a first capacitor between the input interface and the grounding interface and a second capacitor between the output interface and the grounding interface, the high-frequency noise generated by the frequency converter and power cable can be effectively filtered out, thereby improving the accuracy of the flow meter. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a vortex flow meter device provided in an embodiment of the present invention. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 As shown, this utility model embodiment provides a vortex flow meter device, which includes:

[0020] The main body includes a housing 11, a wiring interface, a first connecting line 15 and a second connecting line 16. The wiring interface includes an input interface 12, an output interface 13 and a grounding interface 14. The wiring interface is disposed inside the housing 11. One end of the first connecting line 15 is connected to the input interface 12, and one end of the second connecting line 16 is connected to the output interface 13.

[0021] The capacitor component includes a first capacitor 21, a second capacitor 22, a third connecting line, and a fourth connecting line. One end of the third connecting line is connected to the input interface 12, and the other end is connected to the ground interface 14. The first capacitor 21 is disposed on the third connecting line. One end of the fourth connecting line is connected to the output interface 13, and the other end is connected to the ground interface 14. The second capacitor 22 is disposed on the fourth connecting line.

[0022] In the technical solution provided by this utility model embodiment, the main body is used to detect flow rate. The main body includes a housing 11, a wiring interface, a first connecting line 15, and a second connecting line 16. The wiring interface includes an input interface 12, an output interface 13, and a grounding interface 14. The wiring interface is disposed inside the housing 11. One end of the first connecting line 15 is connected to the input interface 12, and one end of the second connecting line 16 is connected to the output interface 13. The capacitor component is used to filter out high-frequency noise. The capacitor component includes a first capacitor 21, a second capacitor 22, a third connecting line, and a fourth connecting line. One end of the third connecting line is connected to the input interface 12, and the other end is connected to the grounding interface. Interface 14, the first capacitor 21 is disposed on the third connecting line, one end of the fourth connecting line is connected to the output interface 13, and the other end is connected to the grounding interface 14, and the second capacitor 22 is disposed on the fourth connecting line. Compared with the prior art, the anti-interference magnetic ring is installed by grounding one end or both ends, but the display and interference problems of the flow meter are not solved. In this technical solution, by setting the first capacitor 21 between the input interface 12 and the grounding interface 14, and setting the second capacitor 22 between the output interface 13 and the grounding interface 14, the high-frequency noise generated by the frequency converter and power cable can be effectively filtered out, thereby achieving the technical effect of improving the accuracy of the flow meter.

[0023] The aforementioned body is used to detect flow rate. The body includes a housing 11, a wiring interface, a first connecting wire 15, and a second connecting wire 16. The wiring interface includes an input interface 12, an output interface 13, and a grounding interface 14. The wiring interface is located inside the housing 11. One end of the first connecting wire 15 is connected to the input interface 12, and one end of the second connecting wire 16 is connected to the output interface 13. A flow meter is installed inside the housing 11 for detecting flow rate. The wiring interface includes an input interface 12, an output interface 13, and a grounding interface 14. The input interface 12 is a positive current input interface, and the output interface 13 is a negative current output interface. Ground interface 14 is the grounding terminal. One end of the first connecting line 15 is connected to the input interface 12, and one end of the second connecting line 16 is connected to the output interface 13. Specifically, it also includes a data acquisition module 31, which is connected to the first connecting line 15 and the second connecting line 16. The data acquisition module 31 has a positive terminal 32 and a negative terminal 33. The positive terminal 32 is connected to the first connecting line 15, and the negative terminal 33 is connected to the second connecting line 16, for supplying power to the data acquisition module 31. The function of the capacitor component is to filter out high-frequency noise. The capacitor component includes a first capacitor 21, a second capacitor 22, and a third capacitor. The wiring and fourth connection line are as follows: one end of the third connection line is connected to the input interface 12, and the other end is connected to the ground interface 14. The first capacitor 21 is installed on the third connection line. One end of the fourth connection line is connected to the output interface 13, and the other end is connected to the ground interface 14. The second capacitor 22 is installed on the fourth connection line. The first capacitor 21 and the second capacitor 22 are polypropylene capacitors. Generally, the first capacitor 21 and the second capacitor 22 are selected as 100nF, 220nF, and 470nF capacitors. After the flow meter is installed on site, the main interference generated is electromagnetic interference generated by the power cable and the frequency converter. High-frequency interference can occur due to limitations in the installation environment and on-site installation conditions, such as the flow meter being too close to the equipment or insufficient isolation distance between the laid signal cable and power cable. This can interfere with the flow meter's signal cable. To address this, a third connecting line is installed between the input interface 12 and the grounding interface 14, with a first capacitor 21 installed on the third connecting line. A fourth connecting line is installed between the output interface 13 and the grounding interface 14, with a second capacitor 22 installed on the fourth connecting line. The first capacitor 21 and the second capacitor 22 filter out the high-frequency noise generated by the frequency converter and power cable, ensuring normal flow meter display and thus improving the accuracy of the flow meter.

[0024] Furthermore, the third connection line includes a first capacitor line 23 and a second capacitor line 24. One end of the first capacitor line 23 is connected to the input interface 12, and the other end is connected to one end of the first capacitor 21. One end of the second capacitor line 24 is connected to the ground interface 14, and the other end is connected to the other end of the first capacitor 21. In this embodiment, the third connection line is further defined, with both ends of the first capacitor 21 connected to the first capacitor line 23 and the second capacitor line 24 respectively. Simultaneously, one end of the first capacitor line 23 is connected to the input interface 12, and one end of the second capacitor line 24 is connected to the ground interface 14. The fourth connection line includes a third capacitor line 25 and a fourth capacitor line 26. One end of the third capacitor line 25 is connected to the input interface 12, and the other end is connected to one end of the second capacitor 22. One end of the fourth capacitor line 26 is connected to the ground interface 14, and the other end is connected to the other end of the second capacitor 22. This allows the first capacitor 21 and the second capacitor 22 to be connected in parallel to the input interface 12 and the output interface 13, thereby achieving the technical effect of filtering out high-frequency noise generated by the frequency converter and power cables.

[0025] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A vortex flow meter device, characterized in that, include: The main body includes a housing, a wiring interface, a first connecting line, and a second connecting line. The wiring interface includes an input interface, an output interface, and a grounding interface. The wiring interface is disposed inside the housing. One end of the first connecting line is connected to the input interface, and one end of the second connecting line is connected to the output interface. The capacitor component includes a first capacitor, a second capacitor, a third connecting line, and a fourth connecting line. One end of the third connecting line is connected to the input interface, and the other end is connected to the ground interface. The first capacitor is disposed on the third connecting line. One end of the fourth connecting line is connected to the output interface, and the other end is connected to the ground interface. The second capacitor is disposed on the fourth connecting line.

2. The vortex flow meter device according to claim 1, characterized in that, The first capacitor and the second capacitor are polypropylene capacitors.

3. The vortex flow meter device according to claim 2, characterized in that, The third connection line includes a first capacitor line and a second capacitor line. One end of the first capacitor line is connected to the input interface, and the other end is connected to one end of the first capacitor. One end of the second capacitor line is connected to the ground interface, and the other end is connected to the other end of the first capacitor.

4. The vortex flow meter device according to claim 3, characterized in that, The fourth connection line includes a third capacitor line and a fourth capacitor line. One end of the third capacitor line is connected to the input interface and the other end is connected to one end of the second capacitor. One end of the fourth capacitor line is connected to the ground interface and the other end is connected to the other end of the second capacitor.

5. A vortex flow meter device according to any one of claims 1 to 4, characterized in that, Also includes: A data acquisition module is connected to the first connecting line and the second connecting line.

6. The vortex flow meter device according to claim 5, characterized in that, The data acquisition module has a positive terminal and a negative terminal, with the positive terminal connected to the first connecting line and the negative terminal connected to the second connecting line.

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