Flow computer for metering industrial gas flow

Abstract

The utility model provides a flow computer for industrial gas flow metering, and belongs to the technical field of industrial gas flow detection. Comprising a flow computer body and a liquid crystal key panel. The HART protocol circuit board, the power supply circuit board and the CPU circuit board are arranged, so that the flow computer has the functions of high-precision compensation operation, various mathematical models, calculation software and real-time point-by-point operation, various external influence factors such as temperature, pressure and humidity can be accurately adjusted through the high-precision compensation operation, the accuracy of measured data is ensured, and the measurement accuracy is improved. Various mathematical models and calculation software enable the flow computer to adapt to different types of flowmeters and media, a wider application range is provided, the real-time point-by-point operation function allows dynamic monitoring and response to changes of key parameters, the process control and instant diagnosis capabilities are enhanced, the production process is optimized, and the production efficiency is improved. And the efficiency and the reliability of energy management are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial gas flow detection, in particular to a flow computer for industrial gas flow measurement. Background Art

[0002] Industrial gas flow detection is a vital technology used to monitor and control gas flow in various industrial processes, including chemical production, oil refining, natural gas transmission, environmental emission monitoring, and food and beverage manufacturing. Accurate gas flow detection is essential to ensure the production efficiency, product quality, energy management, and worker and environmental safety of these industrial processes. In the industrial gas flow detection system, the flow meter computer plays a core role. It is an advanced electronic device that usually includes sensors, signal processors, displays, and interface components. The main function of the flow meter computer is to receive signals from the flow meter sensor and calculate the gas flow based on these signals.

[0003] Existing flow meter computers have some limitations when in use, lack of high-precision compensation operations, lack of multiple mathematical models and calculation software, and lack of real-time point-by-point calculation functions, which affect the accuracy of flow measurement and may not be able to effectively correct the impact of these parameter changes on flow readings. If the flow meter computer only contains limited mathematical models or calculation software, it may not be able to handle various complex flow conditions, thereby limiting its application scope and measurement accuracy. At the same time, if the flow meter computer cannot perform real-time point-by-point calculations, it may not be able to meet the requirements of fast response and high-precision control. Therefore, the present application provides a flow computer for industrial gas flow measurement to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a flow computer for industrial gas flow measurement to solve the problem that the existing flow meter computers have some limitations when in use.

[0005] To solve the above technical problems, the utility model provides the following technical solutions: a flow computer for industrial gas flow measurement, comprising a flow computer body and a liquid crystal key panel, wherein a HART protocol circuit board, a power supply circuit board and a CPU circuit board are arranged inside the flow computer body.

[0006] A wired communication module is arranged in the main body of the flow computer. The wired communication module comprises an Ethernet communication unit and an RS485 communication unit. The Ethernet communication unit and the RS485 communication unit comprise two RS485 interfaces and an Ethernet interface.

[0007] The Ethernet communication unit is used to establish a communication connection with a host system or a remote system, and the RS485 communication unit is used to establish a communication connection with a flow meter.

[0008] The flow computer body comprises a shell, and a plurality of ventilation holes are arranged on a surface of the shell.

[0009] The flow computer body can be connected to a flow metering point and a throttling flow meter, and can adapt to a variety of media.

[0010] A display connection interface for connecting with the liquid crystal key panel is arranged inside the flow computer body; the liquid crystal key panel includes a screen unit and a screen driving unit.

[0011] The screen unit adopts true color LCD technology to display the temperature, pressure, differential pressure, density, humidity and other data and trend charts of each flow screen.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects: in the above scheme, by setting a HART protocol circuit board, a power supply circuit board and a CPU circuit board, the flow computer has high-precision compensation calculation, a variety of mathematical models and calculation software and real-time point-by-point calculation functions. The high-precision compensation calculation can accurately adjust various external influencing factors, such as temperature, pressure, humidity, etc., to ensure the accuracy of the measured data. The various mathematical models and calculation software enable the flow computer to adapt to different types of flow meters and media, providing a wider range of applications. The real-time point-by-point calculation function allows dynamic monitoring and response to changes in key parameters, enhances the ability of process control and instant diagnosis, optimizes the production process, and improves the efficiency and reliability of energy management. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of a flow computer for industrial gas flow measurement.

[0015] Figure 2 This is a schematic diagram of the structure of the LCD key panel.

[0016] Figure 3 This is a schematic diagram of the HART protocol circuit board structure.

[0017] [Reference Symbols]: 1. Flow computer body; 2. LCD key panel; 3. HART protocol circuit board; 4. Power circuit board; 5. Ventilation port; 6. RS485 interface; 7. Ethernet interface; 8. CPU circuit board; 9. Housing.

[0018] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0019] The following is a detailed description of a flow computer for industrial gas flow measurement provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the utility model provides a flow computer for industrial gas flow measurement, including a flow computer body 1 and a liquid crystal key panel 2, wherein a HART protocol circuit board 3, a power supply circuit board 4 and a CPU circuit board 8 are arranged inside the flow computer body 1.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, a wired communication module is provided in the flow computer body 1 , and the wired communication module includes an Ethernet communication unit and an RS485 communication unit. The Ethernet communication unit and the RS485 communication unit include two RS485 interfaces 6 and an Ethernet interface 7 .

[0022] Various mature communication networking methods can be used: RS485, wireless modem, Ethernet, etc.; the measurement point configuration is flexible, and measurement data collection and management systems of various scales (several points to thousands of points) can be formed according to needs.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the Ethernet communication unit is used to establish a communication connection with a host system or a remote system, and the RS485 communication unit is used to establish a communication connection with a flow meter.

[0024] Ethernet communication unit: used to establish communication connection with the upper system or remote system. Ethernet communication is usually based on MODBUS TCP protocol, which supports high-speed data transmission and star network topology. This communication method is suitable for industrial environments that require large amounts of data transmission and complex network structures. Ethernet interface 7 allows devices such as flow meters to communicate with other devices through a local area network or the Internet to achieve remote monitoring and control.

[0025] RS485 communication unit: used to establish communication connection with the flow meter. RS485 is an asynchronous serial transmission standard. The corresponding communication mode is MODBUS RTU or MODBUS ASCII. RS485 interface 6 is particularly suitable for long-distance communication and multi-point bus topology. It can connect multiple devices to the same bus for communication. RS485 communication unit usually has a communication buffer (FIFO) of not less than 11Bytes, supports multiple communication baud rates, and is suitable for half-duplex communication mode. The advantage of this communication method is that it can connect Ethernet devices with RS485 devices, so that devices that originally do not have Ethernet interface 7 can also achieve remote monitoring and control.

[0026] The combined use of Ethernet communication units and RS485 communication units provides flexibility and scalability for industrial automation systems, allowing field devices such as flow meters to be seamlessly integrated into modern industrial networks, thereby realizing functions such as data sharing, remote operation and central monitoring.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the flow computer body 1 comprises a housing 9 , and a plurality of ventilation openings 5 ​​are arranged on the surface of the housing 9 .

[0028] The main function of the vent 5 is to achieve natural ventilation, which helps to dissipate heat from internal electronic components and prevent overheating from affecting equipment performance or causing damage. By promoting air circulation, the vent 5 can help reduce internal moisture and prevent humid environments from corroding electronic components, thereby ensuring that the flow computer can operate stably under various working conditions.

[0029] like Figure 1 and Figure 3 As shown, the flow computer body 1 can be connected to a flow metering point and a throttling flow meter, and can adapt to a variety of media.

[0030] A flow computer can be connected to a flow measurement point (each point includes differential pressure or flow, and temperature, pressure, humidity, density, component and other signals involved in compensation calculation). Each parameter involved in the compensation calculation can use field signals or be set to a fixed value.

[0031] One instrument can measure a variety of media, applicable media include: natural gas, artificial gas (coke oven gas, generator gas, blast furnace gas), steam, general single gas, mixed gas, water, liquid (oil, chemical products), etc.

[0032] It can be connected to throttling flowmeter (various orifice plates, ISA1932 nozzles, long diameter nozzles, Venturi nozzles, classic Venturi tubes), average velocity tube flowmeters, Pitot flowmeters, measuring tube flowmeters, V-cone flowmeters, Verabar flowmeters, vortex flowmeters, turbine flowmeters, swirl flowmeters, electromagnetic flowmeters, elbow flowmeters, mass flowmeters, ultrasonic flowmeters, rotor flowmeters, oval gear flowmeters, etc.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a display connection interface for connecting to a liquid crystal key panel 2 is provided inside the flow computer body 1; the liquid crystal key panel 2 includes a screen unit and a screen driving unit.

[0034] The display connection interface in the flow computer body 1 is used to connect to the LCD key panel 2 to ensure smooth information transmission and command input. The LCD key panel 2 displays measurement data, operation menus and other important information to the user through the screen unit, so that the user can intuitively read and understand the flow calculation results and system status. The buttons on the panel allow the user to interact with the flow computer, such as entering setting parameters, executing specific functions or adjusting system settings, including function keys, direction keys, numeric keys, etc., to achieve different operating requirements. Users can also configure and calibrate the flow meter to meet the needs of different working conditions.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the screen unit adopts true color LCD technology to display the temperature, pressure, differential pressure, density, humidity and other data and trend charts of each flow screen.

[0036] True color LCD display, all Chinese screen, the screen unit is used to display each flow screen including cumulative / instantaneous flow, temperature, pressure, differential pressure, density, humidity and other data and trend charts. The display screen can be switched, and historical data trend charts (including each cumulative flow, instantaneous flow, temperature, pressure, differential pressure, density, humidity and other data), audit records, alarm records and other information can be viewed.

[0037] The technical solution provided by the utility model, when in use, has high-precision compensation calculation through the use of CPU circuit board 8, power circuit board 4, and HART protocol circuit board 3, provides higher-precision compensation calculation, can more accurately process compensation quantities such as temperature, pressure, humidity, density and component, and integrates more types of mathematical models and calculation software to adapt to the specific needs of different media and flow meter types, and performs real-time point-by-point calculation. It adopts real-time point-by-point calculation technology to improve the dynamic monitoring capability of key parameters such as outflow coefficient C, flow rate expandability coefficient ε, compression coefficient Z, etc.

[0038] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A flow computer for industrial gas flow measurement, characterized in that: include: A flow computer body (1) and a liquid crystal key panel (2), wherein a HART protocol circuit board (3), a power supply circuit board (4) and a CPU circuit board (8) are arranged inside the flow computer body (1).

2. The flow computer for industrial gas flow measurement according to claim 1, characterized in that: The flow computer body (1) is provided with a wired communication module, which includes an Ethernet communication unit and an RS485 communication unit, and the Ethernet communication unit and the RS485 communication unit include two RS485 interfaces (6) and an Ethernet interface (7).

3. The flow computer for industrial gas flow measurement according to claim 1, characterized in that: The Ethernet communication unit is used to establish a communication connection with a host system or a remote system, and the RS485 communication unit is used to establish a communication connection with a flow meter.

4. The flow computer for industrial gas flow measurement according to claim 1, characterized in that: The flow computer body (1) comprises a housing (9), and a surface of the housing (9) is provided with a plurality of ventilation holes (5).

5. The flow computer for industrial gas flow measurement according to claim 1, characterized in that: The flow computer body (1) can be connected to a flow metering point and a throttling flow meter, and can adapt to a variety of media.

6. The flow computer for industrial gas flow measurement according to claim 1, characterized in that: The flow computer body (1) is internally provided with a display connection interface for connecting to the liquid crystal key panel (2); the liquid crystal key panel (2) comprises a screen unit and a screen drive unit.

7. The flow computer for industrial gas flow measurement according to claim 6, characterized in that: The screen unit adopts true color LCD technology to display the temperature, pressure, differential pressure, density, humidity data and trend charts of each flow screen.

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