Vortex sensor for pressure pipes

Abstract

The utility model discloses a vortex street sensor of pressure pipeline, including sensor body, being equipped with detection channel in sensor body inside, being equipped with detection rod in detection channel one side middle part, being equipped with detection through hole in detection rod one end inside, the first locating slot of detection rod one end inside is equipped with micro ceramic pressure sensor, and is equipped with detection groove between detection through hole and micro ceramic pressure sensor, the both ends of sensor body are equipped with first flange mounting seat, and the inside of detection channel one end of sensor body is equipped with resistance fluid, the utility model discloses through the first locating slot of detection rod one end inside is equipped with micro ceramic pressure sensor, can improve the working temperature of vortex street sensor greatly, and moreover can make vortex street sensor whole volume smaller, can be applicable to various narrow small space and carry out detection use, be favorable to improving the efficiency of detection.

Description

Technical Field

[0001] This utility model relates to the field of vortex sensor technology, specifically a vortex sensor for pressure pipelines. Background Technology

[0002] Sensor technology is a key indicator of a nation's economic development level, with pressure sensors being one of the most widely used. As applications and research expand, specialized pressure sensors capable of operating in extreme environments have become a focus of attention. Pressure sensors with high-temperature resistance and high dynamic characteristics have significant application value in aerospace, nuclear energy technology, petrochemicals, geothermal exploration, and automotive electronics. However, the aforementioned miniaturized pressure sensors based on semiconductor silicon materials often struggle to function properly in environments exceeding 400°C due to defects such as high-temperature leakage, thermal stress mismatches between various materials, and high-temperature plastic deformation, thus failing to meet the application requirements in more high-temperature environments.

[0003] A miniaturized, high-temperature, high-dynamic pressure sensor, patent application number CN201810549936.8, is available in the prior art. This sensor includes a sensor probe and is characterized by its small size, high temperature resistance, and fast response, enabling it to measure both total pressure and static pressure. However, vortex flow meters have a limited temperature range for fluid measurement and generally lower detection accuracy, and the pressure sensor itself is inconvenient to install and use. Utility Model Content

[0004] The purpose of this invention is to provide a vortex sensor for pressure pipelines, in order to solve the problems of limited temperature range of fluid measured by existing vortex flow meters, relatively low detection accuracy, and inconvenient installation and use of pressure sensors.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vortex sensor for a pressure pipeline, comprising a sensor body, wherein a detection channel is provided inside the sensor body, a detection rod is provided in the middle of one side of the detection channel, a detection through hole is provided inside one end of the detection rod, a miniature ceramic pressure sensor is fitted in a first positioning groove inside one end of the detection rod, and a detection groove is provided between the detection through hole and the miniature ceramic pressure sensor.

[0006] Furthermore, the sensor body is equipped with first flange mounting seats at both ends, and the detection channel of the sensor body is provided with a flow-blocking device inside one end.

[0007] Furthermore, the flow-blocking fluid is disposed on the inlet front side of the detection rod, and the flow-blocking fluid can be an isosceles trapezoidal block.

[0008] Furthermore, one end of the detection rod is fixedly connected to the sensor body via a second flange seat, and the other end of the detection rod is equipped with a display screen via a support rod.

[0009] Furthermore, a second positioning groove is provided at one end of the detection rod outside the first positioning groove, and a protective cover is hinged inside the second positioning groove.

[0010] Furthermore, a positioning hole is provided between the other end of the protective cover and the first positioning groove, and the positioning holes are fixed together by screws.

[0011] Furthermore, the dimensions of the miniature ceramic pressure sensor are less than 6*15*3mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses a miniature ceramic pressure sensor installed in the first positioning groove inside one end of the detection rod. The miniature ceramic pressure sensor is less than 6*15*3mm in size, which can significantly improve the working temperature of the vortex sensor and make the overall size of the vortex sensor smaller. It can be used for detection in various narrow spaces, which is conducive to improving the detection efficiency.

[0014] 2. Furthermore, by encapsulating a small, high-temperature resistant pressure sensor into a vortex flow meter, the axial impact force on the sensor caused by the same vortex train can be considered as the local pressure difference of the fluid on both sides of the sensor. For the pressure sensor, this pressure difference can be effectively converted into an electrical signal for output, thus obtaining the fluid velocity information and calculating the fluid flow rate. This results in high detection accuracy, enabling simultaneous measurement of both pressure and flow rate, and significantly expanding the temperature range of the fluid measured by the vortex flow meter. Due to the sensor improvements, the application range of the vortex flow meter is broadened.

[0015] 3. In this utility model, one end of the detection rod is fixedly connected to the sensor body through the second flange seat, so that one end of the detection rod can withstand a certain degree of pipeline fluid pressure. Moreover, the miniature ceramic pressure sensor has high installation stability and is convenient and quick to install and disassemble. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a front view of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the detection rod and the flange seat of this utility model;

[0019] Figure 3 This is a schematic diagram of the vortex generated by the fluid resistance of this utility model;

[0020] Figure 4 This is a front view of the internal structure of the detection rod of this utility model.

[0021] In the diagram: 1. Sensor body; 2. First flange mounting base; 3. Fluid obstruction; 4. Support rod; 5. Second flange seat; 6. Detection rod; 8. Detection through hole; 9. Protective cover; 10. First positioning groove; 11. Miniature ceramic pressure sensor; 12. Detection groove; 13. Second positioning groove; 14. Screw; 15. Detection channel. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the invention, a vortex sensor for a pressure pipeline includes a sensor body 1. A detection channel 15 is provided inside the sensor body 1. A fluid-blocking mechanism 3 is provided at one end of the detection channel 15 to facilitate the formation of vortices. The axial impact force on the sensor caused by the vortex train can be considered as the local pressure difference of the fluid on both sides of the sensor. A detection rod 6 is provided in the middle of one side of the detection channel 15. A detection through-hole 8 is provided at one end of the detection rod 6, and the two holes are symmetrically arranged to introduce the fluid pressure into the pressure sensor. Thus, the vortex-induced wave pressure signal can be converted into a pressure signal by the pressure sensor. An electrical signal is drawn from a signal line connected to a pressure sensor and connected to a vortex transmitter via a connection above the flange. The signal is converted into a flow signal. A miniature ceramic pressure sensor 11 is fitted into the first positioning groove 10 inside one end of the detection rod 6. A detection groove 12 is provided between the detection through hole 8 and the miniature ceramic pressure sensor 11. The miniature ceramic pressure sensor 11 has a size of less than 6*15*3mm, which can significantly improve the operating temperature of the vortex sensor and make the overall size of the vortex sensor smaller. It can be used for detection in various narrow spaces, which is beneficial to improving detection efficiency.

[0024] Preferably, the sensor body 1 is equipped with first flange mounting seats 2 at both ends, which facilitates the installation and fixing of the sensor body 1 at both ends.

[0025] Preferably, the flow-blocking fluid 3 is disposed on the inlet front side of the detection rod 6. The flow-blocking fluid 3 can be an isosceles trapezoidal block, which can provide excellent flow blocking and vortex formation.

[0026] Preferably, one end of the detection rod 6 is fixedly connected to the sensor body 1 via the second flange seat 5, so that one end of the detection rod 6 can withstand a certain degree of pipeline fluid pressure. Moreover, the miniature ceramic pressure sensor has high installation stability and is easy and quick to install and remove. The other end of the detection rod 6 is equipped with a display screen and control buttons via the support rod 4, which facilitates overall control and data display.

[0027] Preferably, a second positioning groove 13 is provided at one end of the detection rod 6 outside the first positioning groove 10, and a protective cover 9 is hinged in the second positioning groove 13. A positioning hole is provided between the other end of the protective cover 9 and the first positioning groove 10, and the positioning holes are connected and fixed by screws 14, which makes it easy to install and fix the miniature ceramic pressure sensor 11, and the sensor has high stability and is easy and quick to install and remove.

[0028] The working principle and usage of this utility model are as follows: A miniature ceramic pressure sensor 11 is installed in the first positioning groove 10 inside one end of the detection rod 6. After the small, high-temperature resistant pressure sensor is encapsulated into a vortex sensor, the axial impact force on the sensor caused by the same vortex train can be regarded as the local pressure difference of the fluid on both sides of the sensor. For the pressure sensor, this pressure difference can be well converted into an electrical signal for output, and the fluid velocity information can also be obtained. Then, the flow rate of the fluid can be calculated, resulting in high detection accuracy. It can not only simultaneously measure pressure and flow rate, but also greatly improve the temperature range of the fluid measured by the vortex flow meter. Due to the improvement of the sensor, the application range of the vortex flow meter is wider. Moreover, the size of the miniature ceramic pressure sensor 11 is less than 6*15*3mm, which can significantly improve the operating temperature of the vortex sensor. It also makes the overall size of the vortex sensor smaller, which can be used for detection in various narrow spaces, thus improving detection efficiency.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vortex sensor for a pressure pipeline, comprising a sensor body (1), characterized in that: The sensor body (1) has a detection channel (15) inside. A detection rod (6) is provided in the middle of one side of the detection channel (15). A detection through hole (8) is provided inside one end of the detection rod (6). A miniature ceramic pressure sensor (11) is installed in the first positioning groove (10) inside one end of the detection rod (6). A detection groove (12) is provided between the detection through hole (8) and the miniature ceramic pressure sensor (11).

2. The vortex sensor for a pressure pipeline according to claim 1, characterized in that: The sensor body (1) is equipped with a first flange mounting seat (2) at both ends, and a flow-blocking fluid (3) is provided inside one end of the detection channel (15) of the sensor body (1).

3. The vortex sensor for a pressure pipeline according to claim 2, characterized in that: The flow-blocking fluid (3) is located on the inlet front side of the detection rod (6), and the flow-blocking fluid (3) can be an isosceles trapezoidal block.

4. A vortex sensor for a pressure pipeline according to claim 1, characterized in that: One end of the detection rod (6) is fixedly connected to the sensor body (1) through the second flange seat (5), and the other end of the detection rod (6) is equipped with a display screen through the support rod (4).

5. A vortex sensor for a pressure pipeline according to claim 1, characterized in that: The detection rod (6) on the outside of the first positioning groove (10) has a second positioning groove (13) at one end, and a protective cover (9) is hinged in the second positioning groove (13).

6. A vortex sensor for a pressure pipeline according to claim 5, characterized in that: A positioning hole is provided between the other end of the protective cover (9) and the first positioning groove (10), and the positioning holes are connected and fixed by screws (14).

7. A vortex sensor for a pressure pipeline according to claim 1, characterized in that: The dimensions of the miniature ceramic pressure sensor (11) are less than 6*15*3mm.

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