Sensing module and Coriolis flowmeter

Abstract

The utility model discloses a sensing module and Coriolis flowmeter wherein the sensing module comprises a support, a sensor and an installation assembly, the support is fixedly installed on a straight pipe section, and the sensor is installed on the support through the installation assembly in a sliding mode. According to the sensing module and the Coriolis flowmeter, the support fixedly installed on the straight pipe section is arranged, and the sensor is installed on the support in the sliding mode, so that the position of the sensor can be conveniently adjusted, the optimal measuring position can be conveniently found, and the measuring precision is remarkably improved. Particularly, during small flow measurement, the response of the sensor can be optimized through the slidable design, so that the accuracy is improved, errors are reduced, and the overall performance and reliability of a product are further improved. According to the design, higher flexibility and accuracy are provided for flow measurement, and wider application requirements are met.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent sensor technology, specifically relating to a sensing module and a Coriolis flow meter. Background Technology

[0002] Figure 1 The diagram shows a model of the measuring tube of a Coriolis flow meter. Most measuring tubes are U-shaped. During operation, the straight sections on either side of the measuring tube vibrate relative to each other due to the drive module at the bottom. When liquid flows through these two straight sections, they experience a Coriolis force proportional to the flow rate. This deflection force causes a minute phase change in the vibration of the two straight sections. The flow meter's sensor measures these minute vibration changes, converts them into electrical signals, and calculates the mass flow rate of the fluid based on the magnitude and change of the phase difference. By accurately measuring these vibrations and phase differences, the Coriolis flow meter can provide very high-precision flow measurement.

[0003] In traditional Coriolis flow meters, two sensors are fixedly installed on two straight pipe sections. Because the installation position of such fixed sensors cannot be changed, the measurement signal is easily distorted due to differences in fluid characteristics (such as changes in density and viscosity) or pipe vibration. Especially under low flow conditions, when the fluid velocity distribution is uneven or there is a transition from laminar to turbulent flow, the single detection at the fixed point may produce a large error because it fails to capture the optimal vibration phase or the effective Coriolis force area.

[0004] Furthermore, finite element analysis revealed that while placing the sensor closer to the vibration isolation plate on the pipe reduces external vibration interference, it also leads to a decrease in signal strength due to amplitude attenuation, potentially reducing accuracy, especially at low flow rates. Therefore, a balance must be struck between signal stability and strength based on specific operating conditions, and the sensor's installation position must be adjusted accordingly. Current traditional sensors do not meet these requirements.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a sensing module and a Coriolis flow meter that can adjust the relative position of the sensor and the measuring tube to improve measurement accuracy.

[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0008] A sensing module for a Coriolis flow meter, the Coriolis flow meter including a measuring tube, the measuring tube including a connecting section and two straight pipe sections respectively connected to both ends of the connecting section, the sensing module including a bracket, a sensor and a mounting assembly, the bracket being fixedly mounted on the straight pipe sections, and the sensor being slidably mounted on the bracket via the mounting assembly.

[0009] In one or more embodiments of this utility model, the bracket includes a base plate, a first side plate and a second side plate, the first side plate and the second side plate are disposed opposite to each other and mounted on the base plate, the sensor is slidably mounted between the first side plate and the second side plate through the mounting assembly, and the base plate is fixedly mounted to the straight pipe section.

[0010] In one or more embodiments of this utility model, a first strip-shaped hole is provided on the first side plate, and the sensor slides along the first strip-shaped hole through the mounting assembly.

[0011] In one or more embodiments of the present invention, the mounting assembly includes a first slide bar that passes through the first strip hole and is fixedly mounted to the sensor.

[0012] In one or more embodiments of this utility model, the sensing module further includes a first nut, and the first slide rod is provided with an external thread adapted to the internal thread of the first nut. The first nut is sleeved on the first slide rod and abuts against and is fixed to the first side plate.

[0013] In one or more embodiments of this utility model, a second strip-shaped hole is provided on the second side plate, and the sensor slides along the second strip-shaped hole through the mounting assembly.

[0014] In one or more embodiments of the present invention, the mounting assembly includes a second slide bar, which passes through the second strip hole and is fixedly mounted to the sensor.

[0015] In one or more embodiments of the present invention, the sensing module further includes a second nut, and the second slide rod is provided with an external thread adapted to the internal thread of the second nut. The second nut is sleeved on the second slide rod and abuts against and is fixed to the second side plate.

[0016] In one or more embodiments of this utility model, the bracket is welded and fixed to the straight pipe section.

[0017] A specific embodiment of this utility model also provides a Coriolis flow meter, including the aforementioned sensing module.

[0018] Compared to existing technologies, the sensing module and Coriolis flow meter of this invention, by setting a bracket for fixed installation on the straight pipe section of the measuring tube and allowing the sensor to be slidably mounted on the bracket, facilitates easy adjustment of the sensor's position, making it easier to find the optimal measurement location and significantly improving measurement accuracy. Especially in low-flow-rate measurements, the sliding design optimizes the sensor's response, thereby improving accuracy, reducing errors, and further enhancing the overall performance and reliability of the product. This design provides greater flexibility and accuracy for flow measurement, adapting to a wider range of application needs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of a Coriolis flow meter in the existing technology.

[0021] Figure 2 This is a schematic diagram of the installation of the sensing module in one embodiment of the present invention.

[0022] Figure 3 This is a partial structural diagram of the sensing module in one embodiment of the present invention.

[0023] Figure 4 This is a partial structural diagram of the sensing module in one embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the Coriolis flow meter in one embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0026] The terms "coupled," "connected," or "linked" in this specification include both direct and indirect connections. Indirect connections are those made through an intermediate medium, such as those made through an electrically conductive medium, which may have parasitic inductance or capacitance. Indirect connections may also include connections made through other active or passive devices to achieve the same or similar functional purpose, such as connections through switches, follower circuits, or other circuits or components. Furthermore, in this specification, terms such as "first" and "second" are primarily used to distinguish one technical feature from another, and do not necessarily require or imply any actual relationship, quantity, or order between these technical features.

[0027] In the detailed description of this specification, reference is made to the accompanying drawings, which form a part thereof, wherein like reference numerals always denote like parts, and wherein exemplary embodiments are shown by way of example that may be implemented. It should be understood that other embodiments may be utilized, and structural or logical changes may be made, without departing from the scope of this application. Therefore, the following detailed description should not be considered limiting.

[0028] The various operations in the specification may be described sequentially as multiple discrete actions or operations in a manner most conducive to understanding the claimed subject matter. However, the order of description should not be construed as implying that these operations must be sequentially related. Specifically, these operations may not be performed in the order presented. The described operations may be performed in a different order than in the described embodiments. Various additional operations may be performed in additional embodiments and / or the described operations may be omitted.

[0029] For the purposes of this application, the phrase "A and / or B" means (A), (B), or (A and B). For the purposes of this application, the phrase "A, B and / or C" means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).

[0030] Various components and devices may be mentioned or shown in the singular form herein, but only for the convenience of discussion, and any element mentioned in the singular form may include multiple such elements as taught herein.

[0031] The description uses the phrases "in one embodiment," "in other embodiments," or "in some embodiments," each of which may refer to one or more of the same or different embodiments. Furthermore, the terms "comprising," "including," "having," etc., used in relation to embodiments of this application are synonymous.

[0032] like Figure 2As shown, in one embodiment of this utility model, the sensing module is used in a Coriolis flow meter. The Coriolis flow meter includes a measuring tube, which includes a connecting section 11 and two straight pipe sections connected to both ends of the connecting section 11, specifically straight pipe section 12 and straight pipe section 13. The sensing module includes a bracket 20, a sensor 30, and a mounting assembly. The bracket 20 is fixedly mounted on the straight pipe section 12, and the sensor 30 is slidably mounted on the bracket 20 via the mounting assembly.

[0033] In other embodiments, the bracket 20 may also be fixedly installed on the straight pipe section 13.

[0034] In one embodiment, the Coriolis flow meter employs a dual-measuring-tube design, meaning it has two identical and mutually fixed measuring tubes, with the bracket 20 mounted on the straight pipe sections 12 of both measuring tubes. In other embodiments, the bracket 20 may also be mounted on the straight pipe section 12 of one of the measuring tubes, or a single-measuring-tube Coriolis flow meter may be used.

[0035] In one embodiment, straight pipe section 12 and straight pipe section 13 are parallel, and connecting section 11 together with straight pipe section 12 and straight pipe section 13 form a U-shaped measuring tube. In other embodiments, straight pipe section 12 and straight pipe section 13 may not be parallel. This solution does not limit the specific shape of the measuring tube.

[0036] In one embodiment, sensor 30 is a vibration sensor, preferably an electromagnetic vibration sensor.

[0037] Preferably, the sensor 30 is slidably mounted on the bracket 20 along the axial direction of the straight pipe section 12 via a mounting assembly, so as to adjust the mounting position of the sensor 30 and find the optimal operating point.

[0038] Combination Figure 2 and Figure 3 As shown, the bracket 20 includes a base plate 21, a first side plate 22, and a second side plate 23. The first side plate 22 and the second side plate 23 are arranged opposite to each other and mounted on the base plate 21. The sensor 30 is slidably mounted between the first side plate 22 and the second side plate 23 through a mounting assembly. The base plate 21 is fixedly mounted to the straight pipe section 12.

[0039] In one embodiment, the bottom surface of the base plate 21 is in close contact with the surface of the straight pipe section 12 and is welded and fixed to the surface of the straight pipe section 12 to ensure synchronous vibration with the straight pipe section 12.

[0040] In other embodiments, the base plate 21 may also be fixedly installed to the straight pipe section 12 in other ways.

[0041] In one embodiment, the first side plate 22 and the second side plate 23 are mounted on the top surface of the base plate 21 and are perpendicular to the base plate 21. The first side plate 22 and the second side plate 23 are parallel to the axial direction of the straight pipe section 12, thereby allowing the sensor 30 to slide along the axial direction of the straight pipe section 12 and be fixed at any position on the straight pipe section 12.

[0042] In other embodiments, the first side plate 22 and the second side plate 23 can also be installed on both sides of the base plate 21 and extend to both sides of the straight pipe section 12. In this case, the first side plate 22 and the second side plate 23 can also be fixedly installed to the straight pipe section by welding or other means to enhance stability. The installation angle between the first side plate 22 and the second side plate 23 and the base plate 21 can also be adjusted according to the actual situation.

[0043] In one embodiment, the base plate 21, the first side plate 22, and the second side plate 23 are all flat plates. In other embodiments, one or more of the base plate 21, the first side plate 22, and the second side plate 23 may also be curved or irregular plates to conform to the surface of the sensor 30 and securely mount the sensor 30.

[0044] Preferably, the lower ends of the base plate 21, the first side plate 22, and the second side plate 23 extend at least to the connection point between the straight pipe section 12 and the connecting section 11, ensuring that the sensor 30 has a large adjustment range. The upper ends of the base plate 21, the first side plate 22, and the second side plate 23 can extend to the top of the straight pipe section 12, or can be adjusted according to the actual situation.

[0045] Preferably, the base plate 21, the first side plate 22, and the second side plate 23 are all made of 216 stainless steel.

[0046] In one embodiment, the base plate 21 is rectangular, with its long side arranged along the axial direction of the straight pipe section 12. The first side plate 22 and the second side plate 23 are respectively connected to the two long sides of the base plate 21. The base plate 21, the first side plate 22 and the second side plate 23 can be integrally formed by bending sheet metal, or they can be fixed to each other by welding or other means.

[0047] In other embodiments, the base plate 21 may also be of other shapes.

[0048] Combination Figure 2 , 3 As shown in Figure 4, a first strip hole 24 is provided on the first side plate 22, and the sensor 30 slides along the first strip hole 24 through the mounting assembly.

[0049] Specifically, the mounting components include a first slide bar 41, which passes through a first strip hole 24 and is fixedly mounted to the sensor 30.

[0050] In one embodiment, the sensing module further includes a first nut 51, and the first slide rod 41 is provided with an external thread that matches the internal thread of the first nut 51. The first nut 51 is sleeved on the first slide rod 41 and abuts against and is fixed to the first side plate 22.

[0051] Combination Figure 2 , 3 As shown in Figure 4, a second strip hole 25 is provided on the second side plate 23, and the sensor 30 slides along the second strip hole 25 through the mounting assembly.

[0052] Specifically, the mounting assembly includes a second slide bar 42, which passes through a second strip hole 25 and is fixedly mounted to the sensor 30.

[0053] The sensing module also includes a second nut 52. The second slide rod 42 is provided with an external thread that matches the internal thread of the second nut 52. The second nut 52 is sleeved on the second slide rod 42 and abuts against and is fixed to the second side plate 23.

[0054] In one embodiment, the length direction of the first strip-shaped hole 24 and the length direction of the second strip-shaped hole 25 are both parallel to the axial direction of the straight pipe section 12. The diameter of the first nut 51 is larger than the width of the first strip-shaped hole 24, and the diameter of the second nut 52 is larger than the width of the first strip-shaped hole 24. The first nut 51 is located on the side of the first side plate 22 away from the second side plate 23, and the second nut 52 is located on the side of the second side plate 23 away from the first side plate 22. By tightening the first nut 51 and the second nut 52 until the first nut 51 abuts against the outer side of the first side plate 22 and the second nut 52 abuts against the outer side of the second side plate 23, the first nut 51 and the second nut 52 will not move relative to the bracket 20 due to friction, thereby fixing the sensor 30 on the bracket 20.

[0055] In other embodiments, the second strip hole 25 may not be provided on the second side plate 23, nor may the second slide rod 42 and the second nut 52 be provided. The sensor 30 can be fixed by simply tightening the first nut 51 to clamp the first side plate 22 with the sensor 30.

[0056] Similarly, the first strip hole 24 may not be provided on the first side plate 22, and the first slide rod 41 and the first nut 51 may not be provided.

[0057] In other embodiments, the first nut 51 can be disposed on the side of the first side plate 22 near the second side plate 23, and the second nut 52 can be disposed on the side of the second side plate 23 near the first side plate 22. In this case, by loosening the first nut 51 and the second nut 52, the first nut 51 abuts against the inner side of the first side plate 22, and the second nut 52 abuts against the inner side of the second side plate 23, thereby achieving fixation.

[0058] like Figure 5 As shown, this embodiment also provides a Coriolis flow meter, including the aforementioned sensing module.

[0059] Specifically, there are two sensing modules: sensing module 71 and sensing module 72. Sensing module 71 is installed on the straight pipe section 12 of the measuring tube in the Coriolis flowmeter, and sensing module 72 is installed on the straight pipe section 13 of the measuring tube in the Coriolis flowmeter.

[0060] Preferably, the sensor module 71 and the sensor module 72 have the same structure and size, and are installed in symmetrical positions to avoid uncontrollable interference to the Coriolis flowmeter measurement.

[0061] Preferably, sensor module 71 is installed on the side of straight pipe section 12 away from straight pipe section 13, and sensor module 72 is installed on the side of straight pipe section 13 away from straight pipe section 12. This ensures structural symmetry while facilitating installation and debugging.

[0062] In practical applications, compared to conventional fixed-point measurement methods, this solution, through the use of a bracket 20, allows the sensor 30 to slide freely on both sides of the measuring tube, flexibly finding the optimal measurement position and significantly improving measurement accuracy. Especially in low-flow-rate measurements, this sliding design avoids low-velocity flow or vortex interference zones near the pipe wall, ensuring the sensor's sensitive element remains in the core flow field with a stable velocity gradient, effectively improving resolution and linearity at low flow rates. This dynamic adaptive measurement method not only reduces the stringent requirements for initial installation accuracy but also compensates for errors caused by pipe wear or fluid characteristic drift during long-term use through multi-point data fusion or position fine-tuning, thereby improving accuracy, reducing errors, and achieving overall optimization and long-term stability of measurement accuracy across the entire range, further enhancing the overall performance and reliability of the product. This design provides greater flexibility and accuracy for flow measurement, making it particularly suitable for complex measurement needs in industries such as chemical and food processing, involving high precision, multiple media, and varying operating conditions.

[0063] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0064] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sensing module for a Coriolis flow meter, the Coriolis flow meter comprising a measuring tube, the measuring tube comprising a connecting section and two straight pipe sections respectively connected to both ends of the connecting section, characterized in that, The sensing module includes a bracket, a sensor, and a mounting assembly. The bracket is fixedly installed on the straight pipe section, and the sensor is slidably installed on the bracket via the mounting assembly.

2. The sensing module according to claim 1, characterized in that, The bracket includes a base plate, a first side plate, and a second side plate. The first side plate and the second side plate are disposed opposite to each other and mounted on the base plate. The sensor is slidably mounted between the first side plate and the second side plate through the mounting assembly. The base plate is fixedly mounted to the straight pipe section.

3. The sensing module according to claim 2, characterized in that, A first strip-shaped hole is provided on the first side plate, and the sensor slides along the first strip-shaped hole through the mounting assembly.

4. The sensing module according to claim 3, characterized in that, The mounting assembly includes a first slide bar that passes through the first slot and is fixedly mounted to the sensor.

5. The sensing module according to claim 4, characterized in that, The sensing module also includes a first nut, and the first slide rod is provided with an external thread that matches the internal thread of the first nut. The first nut is sleeved on the first slide rod and abuts against and is fixed to the first side plate.

6. The sensing module according to claim 2, characterized in that, A second strip-shaped hole is provided on the second side plate, and the sensor slides along the second strip-shaped hole through the mounting assembly.

7. The sensing module according to claim 6, characterized in that, The mounting assembly includes a second slide bar, which passes through the second strip hole and is fixedly mounted to the sensor.

8. The sensing module according to claim 7, characterized in that, The sensing module also includes a second nut, and the second slide rod is provided with an external thread that matches the internal thread of the second nut. The second nut is sleeved on the second slide rod and abuts against and is fixed to the second side plate.

9. The sensing module according to claim 1, characterized in that, The bracket is welded and fixed to the straight pipe section.

10. A Coriolis flow meter, characterized in that, Includes the sensing module as described in any one of claims 1 to 9.

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