An ultra-high temperature resistant vortex sensor

Abstract

The application provides a superhigh-temperature-resistant vortex sensor, and relates to the technical field of vortex flowmeters.The vortex sensor comprises a connecting pipe and a testing mechanism.The testing mechanism comprises a testing box, a testing cavity, a sensor and a conducting pipe.The testing cavity is arranged in the testing box, and the sensor is arranged in the testing cavity.The conducting pipe is arranged between the connecting pipe and the testing box, and connects the testing cavity with the inside of the connecting pipe.The fluid to be detected passes through the inside of the connecting pipe, and a vortex generator is arranged in the connecting pipe, so that the fluid generates alternating vortexes after passing through the connecting pipe.The fluid enters the testing cavity through the conducting pipe, the sensor is arranged in the testing cavity, the alternating vortexes bring piezoelectric signal changes, the sensor is arranged in the testing cavity and not directly arranged in the inside of the connecting pipe, the temperature of the fluid passing through the conducting pipe decreases, the temperature of the testing cavity is lower than that of the inside of the connecting pipe, the longer the conducting pipe is, the more the temperature decreases, the length of the conducting pipe can be controlled to adapt to fluids with different temperatures, and the vortex sensor has a wide application range.

Description

Technical Field

[0001] This application relates to the technical field of vortex flow meters, and in particular to a vortex sensor resistant to ultra-high temperatures. Background Technology

[0002] Vortex flow meters, also known as vortex sheath flow meters or Karman vortex flow meters, are a new type of flow meter that measures the flow rate of fluids in closed pipelines based on the Karman vortex principle. Due to their excellent adaptability to various media, they can directly measure the working volumetric flow rate of steam, air, gas, water, and liquids without temperature and pressure compensation. Equipped with temperature and pressure sensors, they can measure standard volumetric flow rate and mass flow rate, making them an ideal replacement for throttling flow meters.

[0003] Currently produced vortex flow meter sensors are a type of steam heating meter. This flow sensor generates frequency through vortices and captures a measurable current signal. However, vortex flow meter sensors usually need to work continuously under harsh environmental conditions.

[0004] Existing vortex shear sensors have the following main drawbacks: they lack high-temperature resistance, and the sensor is easily damaged if the temperature of the fluid being detected is too high; conventional high-temperature sensors have a small temperature range and poor versatility. Summary of the Invention

[0005] To address the shortcomings in the aforementioned background technology, a high-temperature vortex shear sensor is proposed.

[0006] This application provides an ultra-high temperature vortex shear sensor, including a connecting tube and a testing mechanism. The testing mechanism includes a test box, a test cavity, a sensor, and a conductive tube. The test cavity is located inside the test box, and the sensor is located inside the test cavity. The conductive tube is located between the connecting tube and the test box, and connects the test cavity to the interior of the connecting tube.

[0007] Preferably, the conductive tube has a conductive cavity inside, and the diameter of the conductive cavity is smaller than the diameter of the test cavity.

[0008] Preferably, the conductive tube further includes a buffer section, which is annular in shape.

[0009] Preferably, the sensor includes a first core and a second core, which are stacked inside the test chamber.

[0010] Preferably, the test chamber includes a positioning groove and a pressure ring, with the first core and the second core disposed in the positioning groove; the pressure ring is disposed outside the positioning groove and presses the first core and the second core tightly into the positioning groove.

[0011] Preferably, the pressure ring includes a lead hole located at the center of the pressure ring; both the first core and the second core are provided with signal transmission lines, which pass through the lead hole.

[0012] Preferably, the conductive tube also includes a protective layer, which is made of high-temperature glaze.

[0013] The beneficial effects of this application are: The connecting pipe is installed on the pipe to be tested. The fluid to be tested passes through the inside of the connecting pipe, which contains a vortex generator. As the fluid passes through, it generates alternating vortices. The conduction pipe connects the test chamber to the inside of the connecting pipe. The fluid enters the test chamber through the conduction pipe, and the sensor is located inside the test chamber. The alternating vortices cause piezoelectric signal fluctuations, which complete the flow measurement. The sensor is located inside the test chamber, not directly inside the connecting pipe. As the fluid passes through the conduction pipe, the temperature drops, and the temperature in the test chamber is lower than that inside the connecting pipe. The longer the conduction pipe, the greater the temperature drop. By controlling the length of the conduction pipe, it can accommodate fluids of different temperatures, making it widely applicable. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the testing facility; Figure 2 A schematic diagram of a test setup without sensors installed; Figure 3 This is a schematic diagram of the ultra-high temperature vortex street sensor of Example 1; Figure 4 This is a schematic diagram of the ultra-high temperature vortex street sensor in Example 2.

[0016] Explanation of symbols in the diagram: 1 is the connecting pipe; 2 is the testing mechanism, 21 is the testing box, 22 is the testing cavity, 221 is the positioning groove, 222 is the pressure ring, 2221 is the lead hole, 23 is the sensor, 231 is the first core, 232 is the second core, 24 is the conductive tube, 241 is the conductive cavity, 242 is the buffer part, and 243 is the protective layer. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0018] Example 1 like Figures 1 to 3 As shown, a high-temperature vortex shear sensor includes a connecting tube 1 and a testing mechanism 2. The testing mechanism 2 includes a testing box 21, a testing cavity 22, a sensor 23, and a conducting tube 24. The testing cavity 22 is located inside the testing box 21, and the sensor 23 is located inside the testing cavity 22. The conducting tube 24 is located between the connecting tube 1 and the testing box 21, and connects the testing cavity 22 to the interior of the connecting tube 1.

[0019] Connecting pipe 1 is installed on the pipe to be tested. The fluid to be tested passes through the inside of connecting pipe 1, which contains a vortex generator. As the fluid passes through, it generates alternating vortices. Conducting pipe 24 connects the test chamber 22 to the inside of connecting pipe 1. The fluid enters the test chamber 22 through conducting pipe 24, and sensor 23 is located inside the test chamber 22. The alternating vortices cause piezoelectric signal fluctuations, thus measuring the flow rate. Sensor 23 is located inside the test chamber 22, not directly inside connecting pipe 1. As the fluid passes through conducting pipe 24, the temperature drops, and the temperature of the test chamber 22 is lower than that inside connecting pipe 1. The longer conducting pipe 24, the greater the temperature drop. By controlling the length of conducting pipe 24, it can adapt to fluids of different temperatures, making it widely applicable. In this embodiment, the ultra-high temperature vortex sensor uses steam as the fluid for testing and can detect steam pressures not exceeding 150 degrees Celsius.

[0020] The conduction tube 24 is provided with a conduction cavity 241. The diameter of the conduction cavity 241 is smaller than that of the test cavity 22, which can better complete the transmission of fluid signals.

[0021] The sensor 23 includes a first core 231 and a second core 232, which are stacked inside the test chamber 22. The first core 231 and the second core 232 work together to detect the signal, which can enhance the signal.

[0022] The test chamber 22 includes a positioning groove 221 and a pressure ring 222. The first core 231 and the second core 232 are located in the positioning groove 221. The pressure ring 222 is located outside the positioning groove 221 and presses the first core 231 and the second core 232 into the positioning groove 221.

[0023] The pressure ring 222 includes a lead hole 2221, which is located at the center of the pressure ring 222; both the first core 231 and the second core 232 are provided with signal transmission lines, which pass through the lead hole 2221.

[0024] The conductive tube 24 also includes a protective layer 243, which is made of high-temperature glaze to increase the high-temperature resistance of the tube and ensure its durability.

[0025] In this embodiment, a circuit amplification filter can be used to ensure the accuracy of signal detection.

[0026] Example 2 Figure 4 This illustrates a second embodiment of the ultra-high temperature vortex shear sensor of this invention. For example... Figure 4 As shown, the ultra-high temperature vortex shear sensor of the second embodiment is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is that the conduction tube 24 also includes a buffer section 242, which is annular. By setting the buffer section 242, the length of the conduction tube 24 is increased, which can further improve the temperature that the sensor 23 can withstand. When steam is used as the fluid for testing, the steam pressure from 150 degrees Celsius to 500 degrees Celsius can be detected.

[0027] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A super-high temperature resistant vortex sensor comprising a splicing pipe, characterized in that, It also includes a testing mechanism, which includes a test box, a test cavity, a sensor, and a conductive tube. The test cavity is located inside the test box, and the sensor is located inside the test cavity. The conductive tube is located between the connecting tube and the test box, and communicates the test cavity with the interior of the connecting tube.

2. The ultra-high temperature resistant vortex sensor of claim 1, wherein, The conductive tube has a conductive cavity inside, and the diameter of the conductive cavity is smaller than the diameter of the test cavity.

3. The ultra-high temperature vortex shear sensor according to claim 2, characterized in that, The conductive tube also includes a buffer section, which is annular in shape.

4. The ultra-high temperature vortex shear sensor according to any one of claims 1 to 3, characterized in that, The sensor includes a first core and a second core, which are stacked inside the test chamber.

5. The ultra-high temperature vortex shear sensor according to claim 4, characterized in that, The test chamber includes a positioning groove and a pressure ring. The first core and the second core are disposed in the positioning groove. The pressure ring is disposed outside the positioning groove and presses the first core and the second core tightly into the positioning groove.

6. The ultra-high temperature vortex shear sensor according to claim 5, characterized in that, The pressure ring includes a lead hole located at the center of the pressure ring; both the first core and the second core are provided with signal transmission lines, which pass through the lead hole.

7. The ultra-high temperature vortex shear sensor according to any one of claims 1 to 3, characterized in that, The conductive tube also includes a protective layer, which is made of high-temperature glaze.

Images