Fluid flow measuring device
By designing a fluid flow measurement device using a pressure differential flow sensor, the problem of insufficient measurement accuracy and stability of existing gas flow meters in high temperature and high pressure environments is solved, and the effects of high accuracy, stability and low operating costs are achieved.
Patent Information
- Application Number
- CN202421833493.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing gas flowmeters have insufficient measurement accuracy and stability in high temperature and high pressure environments, and are frequently maintained and calibrated, which increases operating costs.
A fluid flow measurement device was designed, and a pressure differential flow sensor was used to calculate the flow by measuring the pressure difference, and to improve accuracy and stability through structures such as fluorine glue sealing ring and cross groove flat head screw.
The device has high accuracy and stability in high temperature and high pressure environments. It has a simple structure and convenient maintenance. It does not require frequent calibration, which reduces operating costs and has self-diagnosis functions and a variety of communication interfaces.
Smart Images
Figure CN222993776U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gas flow meters, and specifically to a fluid flow measurement device. Background Technique
[0002] A gas flow meter is a precision measurement device used to measure and control gas flow.
[0003] The technical background of gas flow meters is profound, and their development and application reflect the progress of industrial automation and precision measurement technology; gas flow meters not only play a key role in traditional industries such as petroleum, chemical, and natural gas industries, but also play an important role in environmental monitoring, medical equipment, and laboratory research.
[0004] The working principles of gas flow meters are diverse, including differential pressure principle, thermal principle, vortex principle, and ultrasonic principle, etc. The application of these principles enables gas flow meters to adapt to different industrial environments and requirements, ensuring the accuracy and reliability of flow measurement. For example, a turbine flow meter measures the flow by the impact of gas fluid on the turbine blades, while a mass flow meter directly measures the mass of the gas passing through the flow meter.
[0005] There are many types of gas flow meters, including turbine flow meters, mass flow meters, liquid-blocking flow meters, and differential pressure flow meters, etc. Each type of flow meter has its specific application scenarios and advantages. For example, turbine flow meters are widely used in industrial process control due to their high precision and wide applicability; while ultrasonic flow meters are suitable for measuring large gas flows, such as in natural gas pipelines and petrochemical industries, due to their non-invasive measurement method.
[0006] The design and working mechanism of gas flow meters reflect a high degree of technical integration and intelligence; modern gas flow meters usually integrate temperature, pressure sensors, and intelligent flow totalizers. These integrated designs not only improve the accuracy and reliability of measurement, but also simplify the installation and maintenance work; the intelligent gas turbine flow meter is a typical example.
[0007] In summary, the technical background of gas flow meters not only covers their working principles, classifications, and application fields, but also involves the complexity and precision of their design and working mechanisms. With the continuous progress of technology, gas flow meters will continue to play an irreplaceable role in multiple fields. Therefore, a fluid flow measurement device is provided to provide a more accurate and reliable solution for flow measurement. Content of the Utility Model
[0008] (1) Technical Problems to be Solved
[0009] In view of the deficiencies of the prior art, this utility model provides a fluid flow measurement device with precise flow measurement.
[0010] (2) Technical solution
[0011] To achieve the above purpose of accurate flow measurement, the present utility model provides the following technical solution: a fluid flow measurement device, including a differential pressure sensor mounting base, on the top of the differential pressure sensor mounting base is mounted a differential pressure sensor encapsulation block, inside the differential pressure sensor mounting base are mounted two fluororubber sealing rings I, on the top of the differential pressure sensor encapsulation block is mounted a differential pressure sensor main board, and on the top of the differential pressure sensor main board are mounted four cross recessed flat head screws.
[0012] Preferably, a fluororubber sealing ring II is mounted inside the differential pressure sensor encapsulation block, and the bottom of the differential pressure sensor main board is in contact with the fluororubber sealing ring II.
[0013] Preferably, the four cross recessed flat head screws are evenly distributed at the four corners of the differential pressure sensor main board.
[0014] Preferably, screw holes adapted to the cross recessed flat head screws are provided at the four corners inside the differential pressure sensor main board, and the bottoms of the four cross recessed flat head screws penetrate through the screw holes and extend into the inside of the differential pressure sensor encapsulation block.
[0015] Preferably, an intake radial laminar flow member is mounted on the top of the differential pressure sensor mounting base.
[0016] Preferably, a fluororubber sealing ring III is mounted inside the differential pressure sensor encapsulation block and is located inside the fluororubber sealing ring II.
[0017] (3) Beneficial effects
[0018] Compared with the prior art, the present utility model provides a fluid flow measurement device, which has the following beneficial effects:
[0019] 1. For this fluid flow measurement device, based on Bernoulli's principle and the continuity equation by the differential pressure flow sensor, when the fluid flows through a throttling device (such as an orifice plate, a Venturi tube, etc.), due to the change in cross-sectional area, the flow velocity will change, thereby generating a pressure difference, and this pressure difference is proportional to the flow velocity of the fluid. The flow rate of the fluid can be calculated by measuring the pressure difference.
[0020] 2. For this fluid flow measurement device, through the setting of the differential pressure flow sensor, the differential pressure flow sensor has high accuracy and stability, can adapt to harsh working environments such as high temperature and high pressure, has a simple structure, is convenient to maintain, and does not require frequent calibration, reducing the operation cost; this flowmeter also has a perfect self-diagnosis function, the measuring range can be adjusted by self-programming, and is equipped with a variety of communication interfaces. Description of the drawings
[0021] Figure 1This is the three-dimensional structure diagram of the present utility model;
[0022] Figure 2 This is the sectional view of the structure of the present utility model;
[0023] Figure 3 This is the elevation view of the structure of the present utility model;
[0024] Figure 4 This is the top view of the structure of the present utility model.
[0025] In the figure: 1. Differential pressure sensor mounting base; 2. Inlet radial laminar flow component; 3. Fluoroelastomer seal ring III; 4. Fluoroelastomer seal ring I; 5. Differential pressure sensor encapsulation block; 6. Fluoroelastomer seal ring II; 7. Differential pressure sensor main board; 8. Cross recessed flat head screw. Specific embodiments
[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0027] Please refer to Figures 1-4 , a fluid flow measurement device, including a differential pressure sensor mounting base 1, a differential pressure sensor encapsulation block 5 is installed on the top of the differential pressure sensor mounting base 1, two fluoroelastomer seal rings I 4 are installed inside the differential pressure sensor mounting base 1, a differential pressure sensor main board 7 is installed on the top of the differential pressure sensor encapsulation block 5, and four cross recessed flat head screws 8 are installed on the top of the differential pressure sensor main board 7.
[0028] Differential pressure flow sensors have a wide range of applications and can be used for the measurement of all single-phase flows, and some two-phase flows can also be applied; they are widely used in process control and measurement in fields such as petroleum, chemical industry, metallurgy, electric power, heating, and water supply; for example, in industrial production, they are used to monitor the liquid level and pressure changes of oil, gas, and water storage tanks; in fuel monitoring, they are used to monitor the liquid level and pressure data of fuel tanks; in printing equipment, they are used to monitor the pressure of ink nozzles; in the lithium battery pneumatic conveying system, they are used to monitor the pressure abnormalities of conveying pipelines to ensure normal production.
[0029] A fluoroelastomer seal ring II 6 is installed inside the differential pressure sensor encapsulation block 5, and the bottom of the differential pressure sensor main board 7 is in contact with the fluoroelastomer seal ring II 6.
[0030] The four cross recessed flat head screws 8 are evenly distributed at the four corners of the differential pressure sensor main board 7.
[0031] At the four corners inside the differential pressure sensor main board 7, there are screw holes adapted to the cross-slot flat head screws 8, and the bottoms of the four cross-slot flat head screws 8 penetrate through the screw holes and extend into the inside of the differential pressure sensor encapsulation block 5.
[0032] An intake radial laminar flow component 2 is installed on the top of the differential pressure sensor mounting base 1.
[0033] Preferably, a fluororubber seal ring three 3 is installed inside the differential pressure sensor encapsulation block 5 and is located inside the fluororubber seal ring two 6.
[0034] The design and working mechanism of the gas flowmeter embody a high degree of technical integration and intelligence; modern gas flowmeters usually integrate temperature, pressure sensors and intelligent flow integrators. These integrated designs not only improve the measurement accuracy and reliability, but also simplify the installation and maintenance work; the gas intelligent turbine flowmeter is a typical example.
[0035] It should be noted that when selecting and using a differential pressure flow sensor, it is necessary to select the appropriate type of throttling device and differential pressure transmitter model according to the actual working conditions, and the correct installation steps and requirements should be followed during installation to ensure the measurement accuracy and the long-term stable operation of the equipment.
[0036] Specifically, the working process: The gas forms laminar flow gas through the micropores on the laminar flow component on the inner hole of the base, and then the two acquisition ports of the differential pressure sensor collect the differential pressure parameters at both ends of the laminar flow component on the main channel, and the data is exported through the interface on the main board.
[0037] Specifically, the working principle: When the fluid flows through the throttling device, due to the change in cross-sectional area, the flow velocity will change, thereby generating a pressure difference. This pressure difference is proportional to the flow velocity of the fluid, and the flow rate of the fluid can be calculated by measuring the pressure difference.
[0038] Generally speaking, the differential pressure flow sensor is an efficient and reliable flow measurement device. Its working principle is simple, the structure is stable, the technical parameters are advanced, and the application range is wide. When using it, attention should be paid to selecting the appropriate model and installation method to ensure its normal operation and improve the measurement accuracy.
[0039] In summary, for this fluid flow measurement device, based on Bernoulli's principle and the continuity equation by the differential pressure flow sensor, when the fluid flows through the throttling device (such as orifice plate, Venturi tube, etc.), due to the change in cross-sectional area, the flow velocity will change, thereby generating a pressure difference. This pressure difference is proportional to the flow velocity of the fluid, and the flow rate of the fluid can be calculated by measuring the pressure difference.
[0040] Moreover, by setting the differential pressure flow sensor, the differential pressure flow sensor has high precision and stability, can adapt to harsh working environments such as high temperature and high pressure, has a simple structure, is easy to maintain, and does not require frequent calibration, reducing the operation cost; the flowmeter also has a perfect self-diagnosis function, the range can be adjusted by self-programming, and is equipped with a variety of communication interfaces.
[0041] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.
[0042] Although the embodiments of the present utility have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility. The scope of the present utility is defined by the appended claims and their equivalents.
Claims
1. A fluid flow measurement device, comprising a differential pressure sensor mounting base (1), characterized in that: A differential pressure sensor packaging block (5) is installed on the top of the differential pressure sensor mounting base (1), two fluororubber sealing rings (4) are installed inside the differential pressure sensor mounting base (1), a differential pressure sensor mainboard (7) is installed on the top of the differential pressure sensor packaging block (5), and four cross-slot flat head screws (8) are installed on the top of the differential pressure sensor mainboard (7).
2. A fluid flow measurement device according to claim 1, characterized in that: A second fluororubber sealing ring (6) is installed inside the differential pressure sensor packaging block (5), and the bottom of the differential pressure sensor main board (7) is in contact with the second fluororubber sealing ring (6).
3. A fluid flow measurement device according to claim 1, characterized in that: The four cross-slot flat head screws (8) are distributed at the four corners of the differential pressure sensor main board (7).
4. A fluid flow measurement device according to claim 1, characterized in that: The four inner corners of the differential pressure sensor main board (7) are provided with screw holes that are compatible with the cross slot flat head screws (8), and the bottoms of the four cross slot flat head screws (8) pass through the screw holes and extend to the interior of the differential pressure sensor packaging block (5).
5. A fluid flow measurement device according to claim 1, characterized in that: An air intake radial laminar flow component (2) is installed on the top of the differential pressure sensor mounting base (1).
6. A fluid flow measurement device according to claim 1, characterized in that: A fluororubber sealing ring third (3) is installed inside the differential pressure sensor packaging block (5) and is located inside the fluororubber sealing ring second (6).