Steam vortex shedding flowmeter

Abstract

The utility model provides a steam vortex shedding flowmeter which comprises a sensor shell, two ends of the sensor shell are suitable for being connected with an external pipeline, and a flat platform in contact with the sensor shell is arranged on the sensor shell; the high-temperature side of the thermoelectric power generation sheet is attached to the flat platform; the heat dissipation assembly is attached to the low-temperature side of the thermoelectric power generation sheet, and the low-temperature side and the high-temperature side of the thermoelectric power generation sheet are opposite to each other; and a power supply output line of the thermoelectric power generation sheet is connected with a power supply input end of the vortex shedding flowmeter converter. The steam vortex shedding flowmeter does not need an external power supply for continuous power supply, and can degrade the maintenance cost and reduce the interference of commercial power frequency.

Description

Technical Field

[0001] This application relates to the field of flow meter technology, and in particular to a steam vortex flow meter with self-sufficient power supply capability. Background Technology

[0002] Steam vortex flow meters utilize the Karman vortex street principle for detection and measurement. Fluid flowing through a vortex generator produces a regular series of vortices rotating in opposite directions on either side. A sensor detects the frequency of these vortex series, and the flow rate is calculated based on the frequency. It is a high-precision flow meter used to accurately measure the total amount of fluid flowing through closed pipes. It can be widely used to measure high-temperature media such as steam.

[0003] Traditional steam vortex flow meters generally use a two-wire power supply, meaning that power and signal are transmitted simultaneously through two wires. This power supply design requires separate wiring, increasing installation costs. For installations at high altitudes or in the field, it also leads to significant maintenance costs.

[0004] In addition, traditional steam vortex flow meters are powered by mains electricity, and the 50Hz power frequency interference from the mains electricity is often introduced into the flow meter measurement system, causing measurement errors and unstable measurement results. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this application provides a self-sustaining steam vortex flow meter that combines the temperature difference characteristics of the steam vortex flow meter itself with the Seebeck effect to power the vortex flow meter converter. Therefore, the steam vortex flow meter of this invention can operate independently without external power supply and can eliminate interference from the mains power frequency.

[0006] An embodiment of this utility model provides a steam vortex flow meter, comprising:

[0007] A sensor housing, the two ends of which are adapted to be connected to external pipes, and a flat platform is provided on the sensor housing to contact the sensor housing;

[0008] A thermoelectric generator, wherein the high-temperature side of the thermoelectric generator is attached to the flat platform;

[0009] A heat dissipation assembly, wherein the heat dissipation assembly is attached to the low-temperature side of the thermoelectric generator, and the low-temperature side and the high-temperature side of the thermoelectric generator are opposite to each other; and

[0010] The power output line of the thermoelectric generator is connected to the power input terminal of the vortex flow meter converter.

[0011] According to one embodiment of the present invention, in the above-mentioned steam vortex flow meter, the sensor housing is made of stainless steel, and the flat platform is made of thermally conductive metal material.

[0012] According to one embodiment of the present invention, in the above-mentioned steam vortex flow meter, the thermoelectric generator is a Seebeck effect semiconductor thermoelectric generator.

[0013] According to one embodiment of the present invention, in the above-mentioned steam vortex flow meter, the vortex flow meter converter has a built-in rechargeable battery, which is electrically connected to the vortex flow meter converter and the thermoelectric generator, so that the rechargeable battery can supply power to the vortex flow meter converter and can receive charging from the thermoelectric generator.

[0014] According to one embodiment of the present invention, in the above-mentioned steam vortex flow meter, two flat platforms are provided on opposite sides of the sensor housing, and each flat platform is attached with the thermoelectric generator and heat dissipation component.

[0015] According to one embodiment of the present invention, in the above-mentioned steam vortex flow meter, the heat dissipation component is composed of a plurality of heat dissipation fins that are distributed perpendicularly and equally spaced from each other.

[0016] It should be understood that the above general description and the following detailed description of the present invention are exemplary and illustrative, and are intended to provide further explanation of the present invention as described in the claims. Attached Figure Description

[0017] The accompanying drawings are included to provide a further understanding of the present invention. They are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present invention and, together with this specification, serve to explain the principles of the present invention. In the drawings:

[0018] Figure 1 This is a front view of an embodiment of the steam vortex flow meter according to the present invention.

[0019] Figure 2 Is it like this? Figure 1 A top view of an embodiment of the steam vortex flow meter shown.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10 Sensor Housing

[0022] 11. Leveling Platform

[0023] 20 Thermoelectric Generators

[0024] 30 Heat dissipation components

[0025] 31 Heatsink

[0026] 40 Vortex Flow Meter Converter Detailed Implementation

[0027] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts. Furthermore, although the terminology used in this invention is selected from commonly known and used terminology, some terms mentioned in this specification may have been chosen by the applicant at his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein. Moreover, the present invention should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0028] The basic principles and preferred embodiments of this utility model will be discussed in more detail with reference to the accompanying drawings. Figure 1 and Figure 2 As shown, the steam vortex flow meter of this utility model mainly includes: sensor housing 10, thermoelectric generator 20, heat dissipation component 30 and vortex flow meter converter 40.

[0029] The sensor housing 10 has two ends adapted to be connected to external pipes. A flat platform 11 is provided on the sensor housing 10 to contact the sensor housing 10. According to one embodiment of the present invention, the sensor housing 10 is made of stainless steel, and the flat platform 11 is made of a thermally conductive metal material.

[0030] The high-temperature side of the thermoelectric generator 20 is attached to the flat platform 11. The thermoelectric generator 20 is preferably a Seebeck effect semiconductor thermoelectric generator. The Seebeck effect, also known as the thermoelectric effect, is a thermoelectric phenomenon discovered by the German physicist Thomas Johann Seebeck in 1821. The Seebeck effect describes how, in a closed circuit composed of two different conductors or semiconductors, a voltage or current will be generated in the circuit if there is a temperature difference between the two junctions. The direction and magnitude of this voltage or current depend on the properties of the two materials and the temperature difference between them.

[0031] A heat dissipation component 30 is attached to the low-temperature side of the thermoelectric generator 20. The low-temperature side and the high-temperature side of the thermoelectric generator 20 are opposite to each other. The power output line (not shown) of the thermoelectric generator 20 is connected to the power input terminal (not shown) of the vortex flowmeter converter 40. As one embodiment, the heat dissipation component 30 is composed of a plurality of heat sinks 31 that are perpendicularly and equally spaced from each other, such as... Figure 1 and Figure 2 As shown.

[0032] exist Figure 2 In the embodiment shown, two flat platforms 11 are provided on opposite sides of the sensor housing 10, and each flat platform 11 is attached with a thermoelectric generator 20 and a heat dissipation component 30.

[0033] Preferably, the vortex flow meter converter 40 may also have a built-in rechargeable battery (not shown) as a backup power source for powering the vortex flow meter converter 40. This rechargeable battery is electrically connected to both the vortex flow meter converter 40 and the thermoelectric generator 20, enabling it to power the vortex flow meter converter 40 and receive charging from the thermoelectric generator 20. For example, when the steam vortex flow meter is being debugged or the measured medium temperature is low, the temperature difference between the high and low temperatures of the thermoelectric generator 20 is small, insufficient to generate enough electrical energy to drive the vortex flow meter converter 40. In this case, the rechargeable battery within the vortex flow meter converter 40 provides the electrical energy. Conversely, when the measured medium temperature rises, a sufficiently large temperature difference exists between the high and low temperatures of the thermoelectric generator 20, enabling it to generate enough electrical energy to drive the vortex flow meter converter 40. Simultaneously, the electrical energy generated by the thermoelectric generator 20 also charges the rechargeable battery within the vortex flow meter converter 40.

[0034] Since the temperature of the steam passing through the pipe during operation of the steam vortex flowmeter is generally above 100℃, while the temperature on one side of the heat dissipation component 30 is close to room temperature, a temperature difference of more than 60℃ can be formed between the high-temperature side and the low-temperature side of the thermoelectric generator 20. Experiments show that this temperature difference can generate approximately 1.1W of power, which is sufficient to support the operating power of the vortex flowmeter converter 40 and to support the charging of the rechargeable battery.

[0035] In summary, the steam vortex flow meter of this application requires no external power supply, but can generate electrical energy through its own Seebeck thermoelectric effect to maintain operation, reducing dependence on external power supply facilities. Furthermore, when equipped with a rechargeable battery, the steam vortex flow meter of this invention can achieve long-term stable power supply, continuously generating sufficient electrical energy during operation to provide a stable power source for the flow meter, unaffected by power grid fluctuations. Since it is not connected to mains power, this invention also avoids the possibility of 50Hz power frequency interference. Finally, this invention also has advantages such as convenient installation, immediate use, and reduced installation and maintenance costs.

[0036] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A steam vortex flow meter, characterized in that, include: Sensor housing (10), both ends of which are adapted to be connected to external pipes, and a flat platform (11) is provided on the sensor housing (10) to contact the sensor housing (10); Thermoelectric generator (20), the high-temperature side of the thermoelectric generator (20) is attached to the flat platform (11); A heat dissipation assembly (30) is attached to the low-temperature side of the thermoelectric generator (20), wherein the low-temperature side and the high-temperature side of the thermoelectric generator (20) are opposite to each other; and The power output line of the thermoelectric generator (20) is connected to the power input terminal of the vortex flow meter converter (40).

2. The steam vortex flow meter as described in claim 1, characterized in that, The sensor housing (10) is made of stainless steel, and the flat platform (11) is made of thermally conductive metal.

3. The steam vortex flow meter as described in claim 1, characterized in that, The thermoelectric generator (20) is a Seebeck effect semiconductor thermoelectric generator.

4. The steam vortex flow meter as described in claim 1, characterized in that, The vortex flow meter converter (40) has a built-in rechargeable battery that is electrically connected to both the vortex flow meter converter (40) and the thermoelectric generator (20), so that the rechargeable battery can power the vortex flow meter converter (40) and receive charging from the thermoelectric generator (20).

5. The steam vortex flow meter as described in claim 1, characterized in that, The sensor housing (10) has two flat platforms (11) on opposite sides, and each flat platform (11) is attached with the thermoelectric generator (20) and the heat dissipation component (30).

6. The steam vortex flow meter as described in claim 1, characterized in that, The heat dissipation component (30) consists of a plurality of heat sinks (31) that are distributed perpendicularly and at equal intervals.

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