Non-intrusive temperature sensor of vortex shedding flowmeter

Abstract

The utility model relates to a non-intrusive temperature sensor of a vortex shedding flowmeter, which comprises a temperature measuring probe and a lead, the temperature measuring probe is used for measuring temperature, and the lead is used for connecting the temperature measuring probe and a vortex shedding flowmeter converter; and the vortex shedding flowmeter generating body is provided with a mounting hole for mounting a temperature measuring probe. The temperature measuring probe is mounted in the mounting hole, so that the temperature sensor is isolated from the medium; due to the fact that the vortex shedding flowmeter generating body is continuously scoured by the medium, the temperature of the vortex shedding flowmeter generating body is basically consistent with the temperature of the medium, and the temperature measuring probe measures the temperature of the vortex shedding flowmeter generating body so as to measure the temperature of the medium. The temperature measuring probe can be prevented from being directly placed in a high-temperature and high-pressure steam environment, and the damage risk of the temperature measuring probe is reduced; moreover, when the temperature sensor is damaged, online replacement can be realized without stopping production for replacement, so that the problem that the production schedule is influenced due to replacement of the temperature sensor can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vortex flowmeters, in particular to a non-invasive temperature sensor for vortex flowmeters. Background Art

[0002] Vortex flowmeters are widely used for fluid measurement, particularly for high-temperature, high-pressure steam flow. To accurately measure steam flow, flowmeters typically require temperature and pressure compensation to convert operating flow to standard flow. Temperature sensors play a crucial role in these flowmeters, detecting fluid temperature and combining it with pressure parameters to calculate actual flow.

[0003] Currently, existing vortex flowmeters typically employ invasive temperature measurement solutions, placing the temperature probe directly within the measured medium to ensure accurate temperature measurement. However, in high-temperature, high-pressure steam measurement environments, the sensor is susceptible to damage due to the medium's high temperature and pressure. Sensor damage often requires production suspension and replacement, impacting production schedules and causing financial losses. Utility Model Content

[0004] In view of the shortcomings of the existing technology mentioned above, the purpose of the present invention is to provide a non-invasive temperature sensor for a vortex flowmeter, which is used to solve the problem that the existing invasive design of the temperature sensor of the vortex flowmeter is easy to be damaged in the high-temperature and high-pressure steam measurement environment, and after damage, production needs to be stopped and replaced, thereby affecting the production progress of the enterprise.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a non-invasive temperature sensor for a vortex flowmeter, comprising:

[0006] A non-invasive temperature sensor includes a temperature probe and a lead wire, wherein the temperature probe is used to measure temperature, and the lead wire is used to connect the temperature probe and the vortex flowmeter converter;

[0007] The vortex flowmeter generator is provided with a mounting hole, and the mounting hole is used to install the temperature measuring probe.

[0008] Optionally, the temperature measuring probe includes a measuring sleeve, a measuring chip is provided in the measuring sleeve, the measuring chip is connected to the lead, the measuring sleeve is filled with a thermally conductive filler, and the measuring chip is coated in the thermally conductive filler.

[0009] Optionally, the measuring sleeve includes a sealing end and an outlet end, the measuring chip is located in the measuring sleeve axially close to the sealing end, and the outlet end is provided with a first connecting component for connecting to the mounting hole.

[0010] Optionally, the first connecting component is provided with a through hole along the axial direction, and the measuring sleeve is located in the through hole.

[0011] Optionally, a sealing groove is provided on the first connecting component, and the sealing groove is used to be filled with sealing filler to seal the outlet end.

[0012] Optionally, the sealing filler is an epoxy resin sealing filler.

[0013] Optionally, the lead wire is a silver-plated high-temperature glass fiber wire.

[0014] Optionally, the lead wire outer sleeve is provided with a vacuum explosion-proof bellows.

[0015] Optionally, the vacuum explosion-proof bellows is connected to the first connecting component, and a second connecting component is provided at one end of the vacuum explosion-proof bellows away from the first connecting component along the length direction, and the second connecting component is connected to the vortex flowmeter converter.

[0016] Optionally, the thermally conductive filler is a magnesium oxide thermally conductive filler.

[0017] As described above, the present invention has the following beneficial effects: the present application achieves isolation between the temperature sensor and the medium by providing a mounting hole on the vortex flowmeter generator and installing the temperature probe in the mounting hole; since the medium continuously flushes the vortex flowmeter generator when the vortex flowmeter is working, the temperature of the vortex flowmeter generator is basically consistent with the temperature of the medium, and the temperature probe measures the temperature of the vortex flowmeter generator and then measures the temperature of the medium. The present application avoids directly placing the temperature probe in a high-temperature and high-pressure steam measurement environment by providing the temperature probe in the mounting hole of the vortex flowmeter generator, thereby reducing the risk of damage to the temperature probe; and since the temperature probe is placed outside the medium, when the temperature sensor is damaged, it can be replaced online without stopping production for replacement, thereby effectively avoiding the problem of affecting production progress due to replacement of the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic structural diagram of a non-invasive temperature sensor for a vortex flowmeter according to an embodiment of the present utility model;

[0019] Figure 2 Display as Figure 1 Schematic diagram of the cross-sectional structure of the non-invasive temperature sensor;

[0020] Figure 3 Display as Figure 2 Schematic diagram of the structure of the first connecting component.

[0021] Description of Reference Numerals

[0022] Temperature probe 1, measuring sleeve 101, measuring chip 102, thermal conductive filler 103, lead 2, vortex flowmeter 3, vortex flowmeter generator 301, vortex flowmeter converter 302, first connecting component 4, through hole 401, sealing groove 402, sealing filler 402a, vacuum explosion-proof bellows 5, second connecting component 6. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0024] See also Figures 1 to 3 . It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner, so the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components during actual implementation. During actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated. The structure, proportion, size, etc. illustrated in the drawings in this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0025] Before describing the embodiments of the present invention in detail, we will first describe its application environment. The technology of this invention is primarily applied in the field of vortex flowmeter technology. This invention addresses the problem of existing vortex flowmeter temperature sensors being invasive in design. These sensors are susceptible to damage in high-temperature, high-pressure steam measurement environments, and damage requires production suspension and replacement, thus impacting the company's production schedule.

[0026] Please combine Figures 1 to 3 As shown, the utility model provides a non-invasive temperature sensor for a vortex flowmeter.

[0027] In an exemplary embodiment of the present application, the non-invasive temperature sensor of the vortex flowmeter 3 includes: a non-invasive temperature sensor, including a temperature probe 1 and a lead 2, the temperature probe 1 is used to measure temperature, and the lead 2 is used to connect the temperature probe 1 and the vortex flowmeter converter 302; the vortex flowmeter generator 301 is provided with a mounting hole, and the mounting hole is used to install the temperature probe 1.

[0028] In this embodiment, a mounting hole is provided on the vortex flowmeter generator 301. The mounting hole is a blind hole opened on the vortex flowmeter generator 301, and a temperature probe 1 is installed in the mounting hole to achieve isolation between the temperature sensor and the medium. When the vortex flowmeter 3 is in operation, the medium continuously flushes the vortex flowmeter generator 301, so that the temperature of the vortex flowmeter generator 301 is substantially consistent with the temperature of the medium. The temperature probe 1 measures the temperature of the vortex flowmeter generator 301 and thus measures the medium temperature. By placing the temperature probe 1 in the mounting hole of the vortex flowmeter generator 301, the present application avoids directly placing the temperature probe 1 in a high-temperature, high-pressure steam measurement environment, thereby reducing the risk of damage to the temperature probe 1. Furthermore, since the temperature probe 1 is placed outside the medium, when the temperature sensor is damaged, it can be replaced online without stopping production for replacement, thereby effectively avoiding the problem of affecting production progress due to replacement of the temperature sensor.

[0029] It's worth noting that the vortex flowmeter's generator 301 generates regular vortices, known as Karman vortexes, alternating from both sides of the generator as the medium passes through it. The frequency of these vortices is proportional to the fluid's flow rate. Therefore, by measuring the vortex frequency, the fluid's flow rate and velocity can be inferred. The lead 2 of the temperature probe 1 connects to the circuitry within the vortex flowmeter converter 302, converting the temperature signal into an electrical signal. Temperature changes can be observed in real time on the converter's display, achieving non-invasive measurement of the medium's temperature.

[0030] In an exemplary embodiment of the present application, the temperature measuring probe 1 includes a measuring sleeve 101 , in which a measuring chip 102 is provided. The measuring chip 102 is connected to the lead 2 . The measuring sleeve 101 is filled with a thermally conductive filler 103 , and the measuring chip 102 is encapsulated in the thermally conductive filler 103 .

[0031] In this embodiment, the measuring chip 102 is a PT100 measuring chip 102, and the lead 2 is a high-temperature resistant cable. By filling the measuring sleeve 101 with a thermally conductive filler 103 and enclosing the measuring chip 102 in the thermally conductive filler 103, the heat around the measuring chip 102 can be quickly transferred to the chip, thereby ensuring that the measuring chip 102 can accurately reflect the actual temperature of the medium.

[0032] In an exemplary embodiment of the present application, the measuring sleeve 101 includes a sealing end and an outlet end. The measuring chip 102 is located in the measuring sleeve 101 axially close to the sealing end. The outlet end is provided with a first connecting component 4 for connecting to the mounting hole.

[0033] In this embodiment, the first connecting component 4 is provided with an external thread, the mounting hole is provided with an internal thread, and the first connecting component 4 is threadedly connected to the mounting hole.

[0034] In an exemplary embodiment of the present application, the first connecting component 4 is provided with a through hole 401 along the axial direction, and the measuring sleeve 101 is located in the through hole 401 .

[0035] In this embodiment, the measuring sleeve 101 is threadedly connected to the mounting hole through the first connecting component 4, thereby connecting the measuring sleeve 101 to the vortex flowmeter generator 301. By opening a through hole 401 on the first connecting component 4, the lead 2 can pass through the through hole 401 and be connected to the vortex flowmeter converter 302, so that the medium temperature change can be observed in real time through the display of the converter.

[0036] In an exemplary embodiment of the present application, a sealing groove 402 is provided on the first connecting component 4 , and the sealing groove 402 is used to be filled with a sealing filler 402 a to seal the outlet terminal.

[0037] In this embodiment, since the vortex flowmeter 3 mostly operates in a humid environment, a sealing groove 402 is provided on the first connecting component 4 and a sealing filler 402a is filled in the sealing groove 402, thereby ensuring that the PT100 measuring chip 102 is less likely to be damaged in humid working conditions.

[0038] In an exemplary embodiment of the present application, the sealing filler 402 a is an epoxy resin sealing filler 402 a .

[0039] In this embodiment, the measuring sleeve 101 is encapsulated with epoxy resin sealing filler 402 a , thereby ensuring good insulation of the PT100 measuring chip 102 .

[0040] In an exemplary embodiment of the present application, the lead wire 2 is a silver-plated high-temperature glass fiber wire.

[0041] In this embodiment, the vortex flowmeter 3 operates at a relatively high temperature, requiring the lead 2 (i.e., the connecting wire) to have good high-temperature resistance. This application uses silver-plated high-temperature glass fiber wire to ensure the reliability of the non-invasive temperature sensor under high-temperature conditions. Since the resistance of the PT100 temperature measuring chip is more sensitive to temperature, the glass fiber wire is required to be silver-plated to prevent the resistance of the lead 2 from affecting the temperature measurement.

[0042] In an exemplary embodiment of the present application, the lead wire 2 is covered with a vacuum explosion-proof bellows 5 .

[0043] In this embodiment, by arranging a vacuum explosion-proof bellows 5 outside the lead 2, the present application can be applied in scenarios where explosion-proofing is required, such as coal gas or hydrogen.

[0044] In an exemplary embodiment of the present application, the vacuum explosion-proof bellows 5 is connected to the first connecting component 4 , and a second connecting component 6 is provided at one end of the vacuum explosion-proof bellows 5 away from the first connecting component 4 along the length direction, and the second connecting component 6 is connected to the vortex flowmeter converter 302 .

[0045] In this embodiment, the second connecting component 6 is a flameproof nut. The present application is threadedly connected to the mounting hole through the first connecting component 4, and the second connecting part is threadedly connected to the vortex flowmeter converter 302, so that the non-invasive temperature sensor and the vortex flowmeter 3 can be quickly installed and disassembled, and the non-invasive temperature sensor can be quickly replaced without stopping production.

[0046] In an exemplary embodiment of the present application, the thermally conductive filler 103 is a magnesium oxide thermally conductive filler 103 .

[0047] In this embodiment, the PT100 measuring chip 102 is encapsulated inside the measuring sleeve 101 and magnesium oxide is used as a filler. On the one hand, the insulation of the two electrodes of the chip and the insulation of the electrodes and the measuring sleeve 101 are ensured. In addition, the magnesium oxide filler has good thermal conductivity and can ensure heat transfer between the measuring sleeve 101 and the PT100 measuring chip 102.

[0048] Working principle: This application achieves isolation between the temperature sensor and the medium by providing a mounting hole on the vortex flowmeter generator 301 and installing the temperature probe 1 in the mounting hole; since the medium continuously flushes the vortex flowmeter generator 301 when the vortex flowmeter 3 is working, the temperature of the vortex flowmeter generator 301 is basically consistent with the temperature of the medium, and the temperature probe 1 measures the temperature of the vortex flowmeter generator 301, thereby measuring the temperature of the medium. This application avoids the temperature probe 1 from being directly placed in a high-temperature and high-pressure steam measurement environment by providing the temperature probe 1 in the mounting hole of the vortex flowmeter generator 301, thereby reducing the risk of damage to the temperature probe 1; and since the temperature probe 1 is placed outside the medium, when the temperature sensor is damaged, it can be replaced online without stopping production for replacement, thereby effectively avoiding the problem of affecting production progress due to replacement of the temperature sensor.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A non-invasive temperature sensor for a vortex flowmeter, characterized in that: include: A non-invasive temperature sensor includes a temperature probe and a lead wire, wherein the temperature probe is used to measure temperature, and the lead wire is used to connect the temperature probe and the vortex flowmeter converter; The vortex flowmeter generator is provided with a mounting hole, and the mounting hole is used to install the temperature measuring probe.

2. The non-invasive temperature sensor for vortex flowmeter according to claim 1, characterized in that: The temperature measuring probe comprises a measuring sleeve, a measuring chip is arranged in the measuring sleeve, the measuring chip is connected to the lead, the measuring sleeve is filled with a heat-conductive filler, and the measuring chip is coated in the heat-conductive filler.

3. The non-invasive temperature sensor for vortex flowmeter according to claim 2, characterized in that: The measuring sleeve includes a sealing end and an outlet end. The measuring chip is located in the measuring sleeve axially close to the sealing end. The outlet end is provided with a first connecting component, and the first connecting component is used to connect with the mounting hole.

4. The non-invasive temperature sensor for vortex flowmeter according to claim 3, characterized in that: The first connecting component is provided with a through hole along the axial direction, and the measuring sleeve is located in the through hole.

5. The non-invasive temperature sensor for vortex flowmeter according to claim 3, characterized in that: A sealing groove is provided on the first connecting component, and the sealing groove is used to be filled with sealing filler to seal the outlet end.

6. The non-invasive temperature sensor for a vortex flowmeter according to claim 5, characterized in that: The sealing filler is an epoxy resin sealing filler.

7. The non-invasive temperature sensor for a vortex flowmeter according to claim 3, characterized in that: The lead wire is a silver-plated high-temperature glass fiber wire.

8. The non-invasive temperature sensor for a vortex flowmeter according to claim 7, characterized in that: The lead wire outer shell is provided with a vacuum explosion-proof bellows.

9. The non-invasive temperature sensor for a vortex flowmeter according to claim 8, characterized in that: The vacuum explosion-proof bellows is connected to the first connecting component. A second connecting component is provided at one end of the vacuum explosion-proof bellows away from the first connecting component along the length direction. The second connecting component is connected to the vortex flowmeter converter.

10. The non-invasive temperature sensor for a vortex flowmeter according to claim 2, characterized in that: The thermally conductive filler is a magnesium oxide thermally conductive filler.

Images