Large-diameter gas ultrasonic flowmeter

Abstract

The utility model provides a large-caliber gas ultrasonic flowmeter, which belongs to the technical field of flow measurement and comprises a shell, a volume corrector, a honeycomb plate, a honeycomb fixing plate, an ultrasonic sensor component, a protective cover, a pressure sensor component, a temperature sensor component and a metering plate. According to the utility model, high-precision flow velocity measurement is realized through the four-channel ultrasonic sensor assemblies which are symmetrically arranged, the rectification structure of the cellular board effectively eliminates the influence of eddy current and asymmetric flow, and the pressure sensor assembly and the temperature sensor assembly which are integrated at the top work cooperatively with the metering board. Automatic conversion calculation of working condition flow and standard condition flow is achieved through a volume correction instrument, an integrated flow metering system is formed, the protection design of a protection cover and a sensor protection cover guarantees the reliability of equipment in a severe industrial environment, DN250 / DN300 is adapted to facilitate installation and maintenance, a metering plate serves as a core processing unit, the communication function of the Internet of Things can be expanded, and the flow metering system is convenient to use. And remote data monitoring and prepayment settlement are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow measurement, and in particular relates to a large-caliber gas ultrasonic flowmeter. Background Art

[0002] The gas ultrasonic flowmeter is a high-precision flow measurement device based on the principle of ultrasonic propagation time difference. It is widely used in natural gas trade measurement, industrial process control, energy management and other fields. Its core principle is to transmit and receive ultrasonic signals through paired ultrasonic transducers, calculate the gas flow rate by using the ultrasonic propagation time difference under downstream and upstream conditions, and obtain the standard volume flow rate by combining the pipeline cross-sectional area and temperature and pressure compensation.

[0003] Existing gas flow meters generally have problems such as low accuracy, narrow range ratio, flow sensitivity, significant deviation caused by eddy / pulsating flow, and harsh installation conditions. They also have single functions, high maintenance costs, and lack of intelligent expansion capabilities. Utility Model Content

[0004] The purpose of the present utility model is to provide a large-caliber gas ultrasonic flowmeter, aiming to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A large-caliber gas ultrasonic flowmeter includes a housing, a volume corrector, a honeycomb plate, a honeycomb fixing plate, an ultrasonic sensor assembly, a protective cover, a pressure sensor assembly, a temperature sensor assembly, and a metering plate;

[0007] Honeycomb panels are fixedly mounted on both ends of the shell through the honeycomb fixing plates, the ultrasonic sensor components and the protective cover are symmetrically arranged on both sides, and the pressure sensor component, temperature sensor component and metering plate are mounted on the top of the shell.

[0008] As a preferred solution of the present invention, four ultrasonic sensor assemblies are provided on each side of the shell, each assembly is equipped with a sensor protection cover, and two protection covers are provided on each side for protecting the cable channel.

[0009] As a preferred solution of the present invention, the data line of the ultrasonic sensor assembly is connected to the metering board through a wire groove under the protective cover to achieve signal connection.

[0010] As a preferred solution of the present invention, the pressure sensor assembly, the temperature sensor assembly and the metering plate are respectively connected to the volume corrector through independent data lines.

[0011] As a preferred solution of the present invention, the honeycomb panel and the axial end surface of the shell are fastened together by a honeycomb fixing plate to form a rectification structure.

[0012] As a preferred solution of the present invention, the shell structure is adapted to two pipe diameter specifications of DN250 and DN300.

[0013] As a preferred solution of the present invention, the metering board serves as a central processing unit, integrating the measurement data of the ultrasonic sensor assembly, the temperature sensor assembly and the pressure sensor assembly, and transmitting the data to the volume corrector for operating condition conversion calculation.

[0014] Compared with the existing technology, the beneficial effects of the present invention are: high-precision flow velocity measurement is achieved through the symmetrically arranged four-channel ultrasonic sensor assembly, the rectification structure of the honeycomb plate effectively eliminates the influence of eddy currents and asymmetric flows, the pressure sensor assembly and temperature sensor assembly integrated on the top work together with the metering plate, and the volume corrector is used to realize automatic conversion and calculation of working condition and standard condition flow, forming an integrated flow metering system. The protective design of the protective cover and the sensor protective cover ensures the reliability of the equipment in harsh industrial environments, and is compatible with DN250 / DN300 for easy installation and maintenance. The metering board, as the core processing unit, can expand the Internet of Things communication function and realize remote data monitoring and prepaid settlement, making it an ideal choice for urban gas trade metering and industrial gas measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the utility model from another perspective;

[0018] Figure 3 This is an exploded schematic diagram of the overall structure of the utility model;

[0019] Figure 4 For the utility model Figure 3 A magnified view of the structure at center A;

[0020] Figure 5 This is a schematic structural diagram of the sensor protection cover and ultrasonic sensor assembly of the present invention.

[0021] In the figure: 1. Shell; 2. Honeycomb panel; 3. Honeycomb fixing plate; 4. Volume corrector; 5. Protective cover; 6. Measuring plate; 7. Pressure sensor assembly; 8. Temperature sensor assembly; 9. Sensor protective cover; 10. Ultrasonic sensor assembly. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example

[0026] Reference Figures 1 to 5 , is an embodiment of the utility model, which provides a large-caliber gas ultrasonic flowmeter, including a housing 1, a volume corrector 4, a honeycomb plate 2, a honeycomb fixing plate 3, an ultrasonic sensor assembly 10, a protective cover 5, a pressure sensor assembly 7, a temperature sensor assembly 8 and a metering plate 6;

[0027] Honeycomb panels 2 are fixedly mounted on both ends of the shell 1 through honeycomb fixing plates 3. Ultrasonic sensor assemblies 10 and protective covers 5 are symmetrically arranged on both sides. A pressure sensor assembly 7, a temperature sensor assembly 8 and a metering plate 6 are installed on the top of the shell 1.

[0028] Among them, through the integrated design of the shell 1, honeycomb panel 2 and ultrasonic sensor assembly 10, combined with the volume corrector 4, multi-parameter synchronous measurement of flow, temperature and pressure is achieved, ensuring high-precision conversion of working condition and standard condition flow. The four-channel ultrasonic measurement and the honeycomb rectification structure work together to effectively suppress eddy current interference and meet the trade measurement needs of large-diameter pipelines. At the same time, the modular layout facilitates maintenance and upgrades.

[0029] Specifically, four ultrasonic sensor assemblies 10 are provided on each side of the housing 1 , each assembly is equipped with a sensor protection cover 9 , and two protection covers 5 are provided on each side for protecting the cable channel.

[0030] Among them, the eight ultrasonic sensor components 10 arranged symmetrically on both sides form a redundant four-channel measurement network, which significantly improves the adaptability of the flow velocity profile and can maintain accuracy even under large flow pulsation or asymmetric flow, such as the flow field after a bend. The dual protection design of the protective cover 5 and the sensor protective cover 9 prevents the erosion of dust and moisture on sensitive components in the industrial environment and extends the service life.

[0031] Furthermore, the data line of the ultrasonic sensor assembly 10 is connected to the metering board 6 via the wire groove under the protective cover 5 to achieve signal connection.

[0032] Among them, the hidden wire groove design under the protective cover 5 not only protects the data cable from mechanical damage, but also reduces the high-frequency interference of equipment such as the frequency converter through the electromagnetic shielding structure, ensuring the microsecond-level time measurement stability of the ultrasonic time difference signal, and providing original data protection for the volume corrector 4.

[0033] Preferably, the pressure sensor assembly 7, the temperature sensor assembly 8 and the metering plate 6 are respectively connected to the volume corrector 4 through independent data lines.

[0034] Among them, the independent data line is dedicated to avoid signal crosstalk, and the real-time temperature and pressure compensation algorithm of the volume corrector 4 is used to control the error of converting the operating flow rate to the standard flow rate within ±0.3%.

[0035] Furthermore, the honeycomb panel 2 and the axial end surface of the shell 1 are fastened together via the honeycomb fixing plate 3 to form a rectification structure.

[0036] Among them, the rigid connection between the hexagonal hole array of the honeycomb plate 2 and the fixed plate 3 constitutes a flow field rectifier, which can attenuate the flow velocity distortion at the upstream 3D to within ±2%, making the flow state in the area of ​​the ultrasonic sensor assembly 10 close to laminar flow, reducing the impact of Reynolds number changes on measurement, and is particularly suitable for high-pressure natural gas long-distance pipelines.

[0037] Furthermore, the shell 1 structure is adapted to two pipe diameter specifications of DN250 and DN300.

[0038] The modular caliber adaptation design of the shell 1 (DN250 / DN300) allows specification switching by replacing the honeycomb plate 2 and the fixed plate 3, reducing the user's spare parts inventory costs. The flow field simulation optimization of the two calibers ensures consistent metering performance, adapting to the scenario of parallel operation of pipes of different diameters in urban gas pressure regulating stations.

[0039] Furthermore, the metering board 6 acts as a central processing unit, integrating the measurement data of the ultrasonic sensor assembly 10, the temperature sensor assembly 8 and the pressure sensor assembly 7, and transmitting the data to the volume corrector 4 for working condition conversion calculation.

[0040] Among them, the metering board 6 serves as the core processor, adopts FPGA to calculate the ultrasonic propagation time difference in high-speed parallel, synchronously integrates temperature and pressure data, and transmits key parameters such as standard flow and total volume to the volume corrector 4 and the Internet of Things platform through the Modbus protocol, realizing value-added functions such as prepaid settlement and gas peak and valley analysis, which is in line with the trend of smart energy management.

[0041] During use, when the gas flows through the shell 1, the fluid is first rectified by the rectification structure composed of the honeycomb plate 2 and the honeycomb fixed plate 3. Subsequently, the four symmetrically arranged groups of ultrasonic sensor assemblies 10 measure the gas flow rate by the time difference method. At the same time, the pressure sensor assembly 7 and the temperature sensor assembly 8 collect the pressure and temperature parameters in the pipeline in real time. All measurement data are transmitted to the metering board 6 through the wire groove under the protective cover 5 for centralized processing, and the volume corrector 4 automatically calculates the standard flow rate and the accumulated total amount according to the operating parameters. The processed data can be uploaded to the monitoring system through the communication interface to realize remote metering and intelligent management.

[0042] In summary, high-precision flow velocity measurement is achieved through the symmetrically arranged four-channel ultrasonic sensor assembly 10 in the shell 1. The rectification structure composed of the honeycomb plate 2 and the honeycomb fixed plate 3 effectively eliminates the influence of eddy currents and asymmetric flows. The pressure sensor assembly 7 and temperature sensor assembly 8 integrated on the top work in coordination with the metering plate 6. The automatic conversion and calculation of the working condition and standard condition flow rates are realized through the volume corrector 4 to form an integrated flow metering system. The protective design of the protective cover 5 and the sensor protective cover 9 ensures the reliability of the equipment in harsh industrial environments. At the same time, the modular structural design (adaptive to DN250 / DN300) facilitates installation and maintenance. The metering board 6, as the core processing unit, can expand the Internet of Things communication function and realize remote data monitoring and prepaid settlement, making it an ideal choice for urban gas trade metering and industrial gas measurement.

[0043] It is important to note that the configuration and arrangement of the present application, as shown in various exemplary embodiments, are illustrative only. Although only a few embodiments are described in detail in this disclosure, those reading this disclosure will readily appreciate that numerous modifications are possible (e.g., variations in the size, dimensions, structure, shape, and proportions of various components, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, components shown as integrally formed may be constructed from multiple parts or components, the positions of components may be inverted or otherwise altered, and the nature, number, or position of discrete components may be modified or changed. Therefore, all such modifications are intended to be encompassed within the scope of this invention. The order or sequence of any process or method steps may be altered or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover structures described herein that perform the function described, and not only structural equivalence but also equivalent structures. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0044] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0045] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A large-caliber gas ultrasonic flowmeter, characterized in that: It comprises a housing (1), a volume corrector (4), a honeycomb plate (2), a honeycomb fixing plate (3), an ultrasonic sensor assembly (10), a protective cover (5), a pressure sensor assembly (7), a temperature sensor assembly (8) and a metering plate (6); Honeycomb panels (2) are fixedly mounted on both ends of the housing (1) via the honeycomb fixing plates (3), the ultrasonic sensor assembly (10) and the protective cover (5) are symmetrically arranged on both sides, and the pressure sensor assembly (7), the temperature sensor assembly (8) and the metering plate (6) are mounted on the top of the housing (1).

2. A large-caliber gas ultrasonic flowmeter according to claim 1, characterized in that: Four ultrasonic sensor assemblies (10) are provided on each side of the housing (1), each assembly is equipped with a sensor protection cover (9), and two protection covers (5) are provided on each side for protecting the cable channel.

3. A large-caliber gas ultrasonic flowmeter according to claim 2, characterized in that: The data line of the ultrasonic sensor assembly (10) is connected to the metering plate (6) via a wire groove below the protective cover (5) to achieve signal connection.

4. A large-caliber gas ultrasonic flowmeter according to claim 3, characterized in that: The pressure sensor assembly (7), the temperature sensor assembly (8) and the metering plate (6) are respectively connected to the volume corrector (4) through independent data lines.

5. A large-caliber gas ultrasonic flowmeter according to claim 4, characterized in that: The honeycomb panel (2) and the axial end surface of the housing (1) are fastened together via a honeycomb fixing plate (3) to form a rectification structure.

6. A large-caliber gas ultrasonic flowmeter according to claim 5, characterized in that: The shell (1) structure is adapted to two pipe diameter specifications of DN250 and DN300.

7. A large-caliber gas ultrasonic flowmeter according to claim 6, characterized in that: The metering board (6) serves as a central processing unit, integrating the measurement data of the ultrasonic sensor assembly (10), the temperature sensor assembly (8) and the pressure sensor assembly (7), and transmitting the data to the volume corrector (4) for operating condition conversion calculation.

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