Self-calibration fast-assembly type integrated orifice plate flowmeter

Abstract

The invention belongs to the technical field of flow meters, and discloses a self-calibration fast-assembly type integrated orifice plate flow meter which comprises a transverse pipe integrally formed with an orifice plate and a first flange plate and further comprises a fast assembly mechanism, and the fast assembly mechanism is used for connecting the transverse pipe with pipelines located on the two sides of the transverse pipe. According to the quick-mounting mechanism, by arranging the first quick-mounting assembly and the second quick-mounting assembly, through cooperation of a V-shaped groove and a V-shaped protrusion and fixing of a fastening component, quick connection of the transverse pipe, the first connecting pipeline and the second connecting pipeline can be completed, and compared with a traditional mounting process of using a plurality of bolts and a plurality of fastening nuts, the quick-mounting mechanism has the advantages that the mounting efficiency is improved; the installation speed is remarkably increased, the installation time is saved, the working efficiency is improved, and later-stage quick disassembly is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of flow meters, and particularly relates to a self-calibrating quick-installation integrated orifice plate flow meter. Background Art

[0002] In the field of industrial automation and process control, flow measurement, as one of the key parameters, is crucial for ensuring the stability of the production process and product quality. As a classic differential pressure type flow measurement instrument, the orifice plate flow meter has been widely used in multiple industries such as petroleum, chemical, metallurgy, and electric power due to its simple structure, wide measurement range, strong adaptability, etc. The traditional orifice plate flow meter usually consists of components such as an orifice plate, upstream and downstream pressure tapping pipes, flanges, and a cross pipe, and calculates the fluid flow by measuring the differential pressure generated before and after the orifice plate.

[0003] However, with the continuous progress of industrial technology and the increasing improvement of process requirements, some limitations of the traditional orifice plate flow meter have gradually emerged in terms of installation. Specifically, the installation process of the traditional orifice plate flow meter is often cumbersome, and multiple bolts and nuts are required to connect the cross pipe to the upstream and downstream pipes, which is not only cumbersome to operate but also very time-consuming; moreover, the traditional orifice plate flow meter lacks support and is prone to shaking or displacement due to external forces, thereby reducing the stability of the orifice plate flow meter. Summary of the Invention

[0004] The purpose of the present invention is to provide a self-calibrating quick-installation integrated orifice plate flow meter to solve the technical problems in the prior art that the installation process of the traditional orifice plate flow meter is often cumbersome, multiple bolts and nuts are required to connect the cross pipe to the upstream and downstream pipes, which is not only cumbersome to operate but also very time-consuming, and the traditional orifice plate flow meter lacks support and is prone to shaking or displacement due to external forces, thereby reducing the stability of the orifice plate flow meter.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A self-calibrating quick-installation integrated orifice plate flow meter includes a cross pipe integrally formed with an orifice plate and a first flange. It further includes: a quick-installation mechanism for connecting the cross pipe to the pipes on both sides of the cross pipe, which includes two groups of first quick-installation components, one group of second quick-installation components, and one group of support components: the first quick-installation component includes: a semi-circular plate, on one side of which a plurality of pull rods are installed, and V-shaped grooves are formed on the pull rods; the second quick-installation component includes: a fixing plate, on which a first arc-shaped plate and a second arc-shaped plate are hinged, and V-shaped protrusions matching the V-shaped grooves are installed on the inner walls of the first arc-shaped plate and the second arc-shaped plate; a fastening member for keeping the ring formed by splicing the first arc-shaped plate and the second arc-shaped plate in a fastened state, so that the V-shaped protrusions clamp and fix the plurality of pull rods through the V-shaped grooves.

[0006] Preferably, the fastening member includes: a first connecting frame fixedly connected to the first arc-shaped plate, with a threaded rod hinged inside it; a second connecting frame fixedly connected to the second arc-shaped plate; and a nut threadedly connected to the threaded rod.

[0007] Preferably, the length of the threaded rod is greater than the sum of the thicknesses of the first connecting frame and the second connecting frame to ensure that after the nut is tightened, the first arc-shaped plate and the second arc-shaped plate are tightly connected.

[0008] Preferably, the support assembly includes: two telescopic rods, the upper ends of the telescopic rods are hinged to the fixed plate, and a tightening bolt is installed on the telescopic rods; a cushion plate arranged in a Z shape, and two slots matching the telescopic rods are opened on the top surface thereof.

[0009] Preferably, a slot matching the nut is opened at one end of the cushion plate.

[0010] Preferably, two first grooves for accommodating the telescopic rods are opened on the bottom surface of the fixed plate, and a second groove for accommodating the cushion plate is opened on the side surface of the fixed plate.

[0011] Preferably, it further includes: two connecting pipes, both installed on the cross pipe, and the two connecting pipes are respectively located on both sides of the orifice plate; a measuring mechanism connected to the two connecting pipes.

[0012] Preferably, the measuring mechanism includes: a flow calculator having two pressure-taking pipes, and the two pressure-taking pipes are respectively connected to the two connecting pipes.

[0013] Preferably, the measuring mechanism further includes: a micro-vibration generator installed on the orifice plate; a vibration frequency sensor installed on the orifice plate; and a controller installed on the two pressure-taking pipes.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are: 1. The quick-installation mechanism in the present invention can complete the quick connection of the cross pipe with the first connecting pipe and the second connecting pipe through the cooperation of the first quick-installation component and the second quick-installation component, the cooperation of the V-shaped groove and the V-shaped protrusion, and the fixation of the fastening member. Compared with the traditional installation process using multiple bolts and multiple fastening nuts, the installation speed is significantly improved, the installation time is saved, the work efficiency is improved, and it is convenient for quick disassembly in the later stage.

[0015] 2. The support assembly in the present invention can support the cross pipe through the cooperation of two telescopic rods and a cushion plate, thereby preventing the cross pipe from shaking or displacing due to external forces, and further improving the stability of the integrated orifice plate flowmeter. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is the three-dimensional view of the self-calibrating quick-install integrated orifice flowmeter in the present invention Figure 1 ; Figure 2 is the three-dimensional view of the support assembly of the self-calibrating quick-install integrated orifice flowmeter in the present invention after expansion; Figure 3 in the present invention Figure 2 exploded view; Figure 4 is the schematic assembly structure diagram of the horizontal pipe, the first flange and the flow calculator in the present invention; Figure 5 is the three-dimensional view of the quick-install mechanism in the present invention; Figure 6 in the present invention Figure 5 partial enlarged view of part A; Figure 7 is the schematic view of the bottom view angle of the fixing plate in the present invention; Figure 8 is the schematic assembly structure diagram of the backing plate and the nut in the present invention; Figure 9 in the present invention Figure 8 partial enlarged view of part B; Reference numerals: 100, horizontal pipe; 101, orifice plate; 102, connecting pipe; 103, first flange; 104, first flange hole; 111, flow calculator; 112, pressure tapping pipe; 113, micro-vibration generator; 114, vibration frequency sensor; 115, controller; 211, semi-circular plate; 212, pull rod; 213, V-shaped groove; 221, fixing plate; 2211, first groove; 2212, second groove; 222, installation groove; 223, first arc-shaped plate; 224, second arc-shaped plate; 225, V-shaped protrusion; 226, first connecting frame; 227, second connecting frame; 228, threaded rod; 229, nut; 231, telescopic rod; 232, tightening bolt; 233, backing plate; 2331, slot; 2332, card slot; 300, first connecting pipe; 301, second connecting pipe; 302, second flange; 303, second flange hole. Detailed implementation manners

[0018] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0019] In the following description, many specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0020] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that mutually excludes other embodiments.

[0021] The present invention is described in detail in conjunction with the accompanying drawings of the specification. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the accompanying drawings of the specification are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0022] At the same time, in the description of the present invention, it should be noted that the terms "first, second, or third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0023] Unless otherwise clearly defined and limited in the present invention, the terms "mounted, connected, or coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection, an electrical connection, or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Embodiment 1: As Figures 1-3 shown, a self-calibrating quick-install integrated orifice flowmeter includes a horizontal pipe 100 integrally formed with an orifice plate 101 and a first flange 103. A plurality of first flange holes 104 are provided on the first flange 103.

[0025] The self - calibrating quick - installation integrated orifice flowmeter further includes a quick - installation mechanism, which is used to connect the horizontal pipe 100 with the pipes located on both sides of the horizontal pipe 100. The pipes located on both sides of the horizontal pipe 100 are the first connecting pipe 300 and the second connecting pipe 301. Second flange plates 302 are installed on both the first connecting pipe 300 and the second connecting pipe 301, and a plurality of second flange holes 303 are opened on the second flange plates 302.

[0026] The quick - installation mechanism includes two groups of first quick - installation components, one group of second quick - installation components and one group of support components.

[0027] The first quick - installation component includes a semi - circular plate 211. A plurality of pull rods 212 are installed on one side of the semi - circular plate 211. V - shaped grooves 213 are opened on the pull rods 212. The pull rods 212 can pass through the first flange holes 104 and the second flange holes 303. The pull rods 212 on the two semi - circular plates 211 are arranged in one - to - one correspondence with the flange holes on the first flange plate 103.

[0028] The second quick - installation component includes a fixing plate 221 and a fastening component. An installation groove 222 is opened on the top surface of the fixing plate 221. A first arc - shaped plate 223 and a second arc - shaped plate 224 are hinged in the installation groove 222. The first arc - shaped plate 223 and the second arc - shaped plate 224 can be spliced to form a ring. V - shaped protrusions 225 matching the V - shaped grooves 213 are installed on the inner walls of the first arc - shaped plate 223 and the second arc - shaped plate 224.

[0029] The fastening component is used to keep the ring formed by splicing the first arc - shaped plate 223 and the second arc - shaped plate 224 in a fastened state, so that the V - shaped protrusions 225 clamp and fix the plurality of pull rods 212 through the V - shaped grooves 213.

[0030] Specifically, when it is necessary to connect the horizontal pipe 100 with the first connecting pipe 300 and the second connecting pipe 301, the horizontal pipe 100 is placed between the first connecting pipe 300 and the second connecting pipe 301, the first flange plate 103 is aligned with the second flange plate 302, and the plurality of first flange holes 104 and the plurality of second flange holes 303 are communicated.

[0031] Then, insert the insertion rod on the semi-circular plate 211 through the first flange hole 104 and the second flange hole 303. Then, place the fixing plate 221 directly below the connection between the horizontal pipe 100 and the second connecting pipe 301. Then, open the first arc-shaped plate 223 and the second arc-shaped plate 224, and then move the fixing plate 221 upward so that the second connecting pipe 301 is located between the first arc-shaped plate 223 and the second arc-shaped plate 224, align the V-shaped protrusion 225 with the V-shaped groove 213. Then, move the first arc-shaped plate 223 and the second arc-shaped plate 224 so that the first arc-shaped plate 223 and the second arc-shaped plate 224 form a ring, and insert a part of the V-shaped protrusion 225 into the V-shaped groove 213. Then, through the fastening member, keep the ring formed by the splicing of the first arc-shaped plate 223 and the second arc-shaped plate 224 in a tightened state, so that the V-shaped protrusion 225 is completely inserted into the V-shaped groove 213, thereby clamping and fixing the plurality of pull rods 212 by the V-shaped protrusion 225.

[0032] And when the V-shaped protrusion 225 is inserted into the V-shaped groove 213, the V-shaped protrusion 225 will push the pull rod 212 to move away from the semi-circular plate 211; when the pull rod 212 moves, it will also drive the semi-circular plate 211 to move, and then the semi-circular plate 211 will push the second flange 302 to move, so that the distance between the second flange 302 and the first flange 103 is shortened.

[0033] When the V-shaped protrusion 225 is completely located in the V-shaped groove 213, the first flange 103 and the second flange 302 are tightly connected. At this time, the horizontal pipe 100 is tightly connected to the first connecting pipe 300 and the second connecting pipe 301.

[0034] Connect the horizontal pipe 100 to the first connecting pipe 300 and the second connecting pipe 301 in this way. Compared with the traditional connection method using multiple bolts and multiple fastening nuts 229, the installation speed is greatly improved, and it is also convenient to quickly disassemble the integrated orifice flowmeter from the first connecting pipe 300 and the second connecting pipe 301 in the later stage.

[0035] As Figure 5 and Figure 6 shown, the fastening member includes a first connecting frame 226, a second connecting frame 227 and a nut 229. The first connecting frame 226 is fixedly connected to the first arc-shaped plate 223, and a threaded rod 228 is hinged inside the first connecting frame 226; the second connecting frame 227 is fixedly connected to the second arc-shaped plate 224; the nut 229 is threadedly connected to the threaded rod 228. The length of the threaded rod 228 is greater than the sum of the thicknesses of the first connecting frame 226 and the second connecting frame 227 to ensure that after the nut 229 is tightened, the first arc-shaped plate 223 and the second arc-shaped plate 224 are tightly connected.

[0036] Specifically, when it is necessary to tightly connect the first arc-shaped plate 223 and the second arc-shaped plate 224, by rotating the threaded rod 228, the threaded rod 228 penetrates through the second connecting frame 227, and then rotating the nut 229, the nut 229 moves towards the direction close to the second connecting frame 227, thereby making the nut 229 squeeze the second connecting frame 227, further making the second connecting frame 227 tightly connected to the first connecting frame 226, and further making the first arc-shaped plate 223 and the second arc-shaped plate 224 tightly connected.

[0037] As Figure 3 , Figure 6 , Figure 8 and Figure 9 shown, the support assembly includes two telescopic rods 231 and a backing plate 233. The upper end of the telescopic rod 231 is hinged to the fixing plate 221, and a tightening bolt 232 is installed on the telescopic rod 231; the backing plate 233 is arranged in a Z shape, and two slots 2331 matching the telescopic rods 231 are opened on the top surface of the backing plate 233. A slot 2332 matching the nut 229 is opened at one end of the backing plate 233.

[0038] Specifically, when it is necessary to tighten the nut 229, by sleeving the slot 2332 on the backing plate 233 over the nut 229 and then rotating the backing plate 233 to drive the nut 229 to rotate. Since the backing plate 233 increases the lever arm, it is possible to rotate the nut 229 more labor-saving.

[0039] After the horizontal pipe 100 is connected to the first connecting pipe 300 and the second connecting pipe 301, by rotating the two telescopic rods 231, the two telescopic rods 231 are perpendicular to the fixing plate 221, and then placing the backing plate 233 under the two telescopic rods 231 so that the two slots 2331 are directly below the two telescopic rods 231, and then adjusting the overall length of the telescopic rod 231 through the tightening bolt 232 so that the lower end of the telescopic rod 231 is inserted into the slot 2331, thereby supporting the horizontal pipe 100 through the backing plate 233 and the telescopic rod 231 and improving the stability of the horizontal pipe 100.

[0040] As Figure 7 shown, two first grooves 2211 for receiving the telescopic rods 231 are opened on the bottom surface of the fixing plate 221, and a second groove 2212 for receiving the backing plate 233 is opened on the side surface of the fixing plate 221.

[0041] Specifically, by providing the first groove 2211 and the second groove 2212, it is convenient for the storage of the telescopic rod 231 and the backing plate 233, and when not in use, the space occupied by the support assembly is reduced.

[0042] As Figure 4As shown in the figure, a self-calibrating quick-install integrated orifice flowmeter further includes two connecting pipes 102 and a measuring mechanism. The two connecting pipes 102 are integrally formed with the horizontal pipe 100, and the two connecting pipes 102 are respectively located on both sides of the orifice plate 101; the measuring mechanism is connected to the two connecting pipes 102. The measuring mechanism includes a flow calculator 111, and the flow calculator 111 has two pressure-taking pipes 112, and the two pressure-taking pipes 112 are respectively connected to the two connecting pipes 102.

[0043] Working principle: When installing the integrated orifice flowmeter, by placing the horizontal pipe 100 between the first connecting pipe 300 and the second connecting pipe 301, aligning the first flange 103 with the second flange 302, and connecting a plurality of first flange holes 104 and a plurality of second flange holes 303.

[0044] Then, insert the insertion rod on the semi-circular plate 211 through the first flange hole 104 and the second flange hole 303. Then, place the fixing plate 221 directly below the connection between the horizontal pipe 100 and the second connecting pipe 301. Then, open the first arc plate 223 and the second arc plate 224, and then move the fixing plate 221 upward so that the second connecting pipe 301 is located between the first arc plate 223 and the second arc plate 224, align the V-shaped protrusion 225 with the V-shaped groove 213, and then move the first arc plate 223 and the second arc plate 224 so that the first arc plate 223 and the second arc plate 224 form a ring, and insert a part of the V-shaped protrusion 225 into the V-shaped groove 213. Then, through the fastening member, keep the ring formed by splicing the first arc plate 223 and the second arc plate 224 in a fastened state, so that the V-shaped protrusion 225 is completely inserted into the V-shaped groove 213, thereby clamping and fixing a plurality of pull rods 212 by the V-shaped protrusion 225.

[0045] And when the V-shaped protrusion 225 is inserted into the V-shaped groove 213, the V-shaped protrusion 225 will push the pull rod 212 to move away from the semi-circular plate 211; when the pull rod 212 moves, it will also drive the semi-circular plate 211 to move, thereby causing the semi-circular plate 211 to push the second flange 302 to move, shortening the distance between the second flange 302 and the first flange 103. When the V-shaped protrusion 225 is completely located in the V-shaped groove 213, the first flange 103 and the second flange 302 are tightly connected, and at this time, the horizontal pipe 100 is tightly connected to the first connecting pipe 300 and the second connecting pipe 301.

[0046] Then, by rotating the two telescopic rods 231, the two telescopic rods 231 are perpendicular to the fixed plate 221. Then, place the cushion plate 233 below the two telescopic rods 231 so that the two slots 2331 are directly below the two telescopic rods 231. Then, adjust the overall length of the telescopic rod 231 through the tightening bolt 232 so that the lower end of the telescopic rod 231 is inserted into the slot 2331. Thus, the horizontal pipe 100 is supported by the cushion plate 233 and the telescopic rod 231, improving the stability of the horizontal pipe 100.

[0047] Embodiment 2: As Figure 4 shown, in the case where other parts are the same as those in Embodiment 1, the difference between this embodiment and Embodiment 1 is that: The measuring mechanism further includes a micro-vibration generator 113, a vibration frequency sensor 114, a temperature sensor (not shown), a pressure sensor (not shown), a storage battery (not shown), and a controller 115. The pressure sensor is installed on the inner wall of the horizontal pipe 100, the temperature sensor is installed on the horizontal pipe 100, and the micro-vibration generator 113 is installed on the orifice plate 101; the storage battery is installed on the orifice plate 101, and the storage battery supplies power to the temperature sensor, the pressure sensor, the vibration generator, and the vibration frequency sensor 114.

[0048] The micro-vibration generator 113 adopts a multi-layer stacked piezoelectric ceramic structure. The diameter of the micro-vibration generator 113 is 10 mm, and the thickness is 4 mm. The micro-vibration generator 113 can efficiently convert electrical energy into mechanical energy.

[0049] The vibration frequency sensor 114 is installed on the orifice plate 101; the vibration frequency sensor 114 selects a MEMS vibration frequency sensor 114, and this sensor can collect the vibration frequency of the orifice plate 101 in real time at a sampling frequency not lower than 10 kHz. The vibration frequency sensor 114 is connected to the controller 115 through a low-noise shielded cable (not shown). There are holes (not shown) in the horizontal pipe 100, which can enable the low-noise shielded cable to pass through the horizontal pipe 100 and be connected to the controller 115. A seal is provided at the hole to ensure the sealing performance of the horizontal pipe 100.

[0050] The controller 115 is installed on the two pressure-taking pipes 112. The controller 115 is provided with a control system and an alarm. The control system includes a data processing and control unit and a threshold setting unit. The data processing and control unit has a built-in standard vibration frequency model library, and the standard vibration frequency model library contains standard vibration frequency data when the orifice plate 101 flowmeter operates normally under different working conditions (such as different fluid types, temperature, and pressure conditions). The threshold setting unit is used to receive the frequency deviation threshold range set by the user.

[0051] Working principle: Before use, first set the type of fluid to be transported, and then the threshold setting unit receives the frequency deviation threshold range set by the user. For example, the set frequency deviation thresholds are ±5% and ±15%. When the deviation between the real-time vibration frequency and the standard vibration frequency (i.e., the frequency deviation) is within ±5%, it is determined that the orifice plate 101 is in normal operation; when the deviation between the real-time vibration frequency and the standard vibration frequency exceeds 5% and is lower than 15%, it is determined that the orifice plate 101 has a minor fault (such as slight scaling); when the deviation between the real-time vibration frequency and the standard vibration frequency exceeds 15%, it is determined that the orifice plate 101 has a serious fault.

[0052] During specific use, start the micro-vibration generator 113, and the micro-vibration generator 113 will drive the orifice plate 101 to generate tiny vibrations with an amplitude in the range of 5 - 20 μm. This vibration frequency can effectively stimulate the vibration response of the orifice plate 101 without significantly affecting the fluid flow state.

[0053] Then, the vibration frequency sensor 114 detects the vibration frequency data of the orifice plate 101, the pressure sensor detects the pressure data, and the temperature sensor detects the temperature data. Then, the vibration frequency data, pressure data, and temperature data are transmitted to the data processing and control unit through a low-noise shielded cable. After receiving the real-time vibration frequency data, pressure data, and temperature data, the data processing and control unit compares and analyzes the real-time vibration frequency data with the standard vibration frequency under the corresponding working conditions.

[0054] When it is determined to be a minor fault (frequency deviation exceeds 5% and is lower than 15%), the data processing and control unit will use a linear correction algorithm to calibrate the flow coefficient. Specifically: The data processing and control unit retrieves the historical calibration data under the same or similar working conditions from the historical calibration database, analyzes the relationship between the vibration frequency deviation and the flow coefficient correction value, and establishes a linear correction model: C 修正 =C 初始 +k×Δf; Among them, C 修正 is the corrected flow coefficient, C 初始 is the initial flow coefficient, k is the correction coefficient obtained by fitting historical data, Δf is the vibration frequency deviation value, Δf = f_real - f_standard; Calculate the corrected flow coefficient through this model and apply it to the differential pressure - flow conversion formula, in which, Q represents the flow rate, C represents the flow coefficient, which is used to correct the theoretical flow rate calculation value; A represents the flow area of the orifice plate 101; ΔP represents the pressure difference before and after the orifice plate 101; ρ represents the density of the fluid.

[0055] When a serious fault is determined (frequency deviation exceeds 15%), the data processing and control unit will control the activation of the alarm to remind the staff to repair the flow meter in time.

[0056] The method for obtaining the correction coefficient k includes the following steps: Step 1: During the long-term operation of the orifice plate 101 flowmeter, the vibration frequency deviation value Δf before and after each self-calibration and the corresponding flow coefficient correction value are continuously recorded through the data processing and control unit. At the same time, the working condition information during each measurement is recorded, and the working condition information includes fluid type, temperature and pressure to ensure that the collected data covers a variety of different working conditions; Step 2: Filter out data under the same or similar working conditions from the historical calibration database for analysis, and pre-process the filtered data. The pre-processing includes checking the integrity of the data, eliminating abnormal data (such as obvious erroneous data caused by sensor failure), and performing reasonable interpolation processing on missing data to ensure the quality of the data used for fitting is reliable; Step 3: Based on the linear correction model, C 修正 =C 初始 + k × Δf, the collected flow coefficient correction value is taken as the dependent variable y, the vibration frequency deviation value is taken as the independent variable x, and a linear regression model y = a + kx (where a = C 初始 , is a constant term), and the coefficient k is determined by fitting so that the model can best describe the relationship between the two; Step 4: Use the least squares method to fit parameters and find a set of parameters (i.e., k and a) that minimizes the sum of square errors from the observed data points to the fitted line. Step 5. Use a part of the data that is not involved in the fitting (i.e., the reserved validation set) to verify the obtained linear model, substitute the vibration frequency deviation value in the validation set into the model, calculate the predicted flow coefficient correction value, and compare it with the actual flow coefficient correction value, calculate the error index (such as mean square error, mean absolute error, etc.). If the error is large, it means that the model fitting effect is not good, and it is necessary to recheck the data quality, or use a polynomial regression model to optimize the model until an error is within an acceptable range and can accurately describe the relationship between the vibration frequency deviation and the flow coefficient correction value. Model, thereby determining the final correction coefficient k; during the use of the model, as new calibration data continues to accumulate, regular refitting is performed to update the k value to adapt to changes in the performance of the orifice plate 101 flowmeter.

[0057] The measuring mechanism excites the vibration of the orifice plate 101 through a vibration generator, then collects the vibration frequency data in real time through the vibration frequency sensor 114, and then judges the working state of the orifice plate 101 according to the vibration frequency deviation by comparing and analyzing the real-time vibration frequency data with the built-in standard vibration frequency model library. When the vibration frequency deviation exceeds the threshold range set by the user, the alarm is activated to remind the staff to perform maintenance in time, avoiding production interruption caused by failures; when the vibration frequency deviation is within the threshold range set by the user, the flowmeter is automatically calibrated. This self-calibration function reduces the need for manual intervention and improves work efficiency.

[0058] As described above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

[0059] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments only. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A self-calibrating quick-installation integrated orifice flowmeter, comprising a horizontal pipe (100) integrally formed with an orifice plate (101) and a first flange (103), characterized in that, It also includes: A quick installation mechanism for connecting the horizontal pipe (100) to the pipes on both sides of the horizontal pipe (100), which includes two sets of first quick installation components, one set of second quick installation components and one set of support components: The first quick installation component includes: A semi-circular plate (211) with a plurality of pull rods (212) installed on one side thereof, and V-shaped grooves (213) are provided on the pull rods (212); The second quick installation component includes: A fixing plate (221) with a first arc-shaped plate (223) and a second arc-shaped plate (224) hinged thereon, and V-shaped protrusions (225) matching the V-shaped grooves (213) are installed on the inner walls of the first arc-shaped plate (223) and the second arc-shaped plate (224); A fastening member for keeping the ring formed by splicing the first arc-shaped plate (223) and the second arc-shaped plate (224) in a fastened state, so that the V-shaped protrusions (225) clamp and fix the plurality of pull rods (212) through the V-shaped grooves (213); The fastening member includes: A first connecting frame (226) fixedly connected to the first arc-shaped plate (223), and a threaded rod (228) is hinged inside it; A second connecting frame (227) fixedly connected to the second arc-shaped plate (224); A nut (229) threadedly connected to the threaded rod (228).

2. The self-calibrating quick-installation integrated orifice flowmeter according to claim 1, characterized in that, The length of the threaded rod (228) is greater than the sum of the thicknesses of the first connecting frame (226) and the second connecting frame (227) to ensure that after the nut (229) is tightened, the first arc-shaped plate (223) and the second arc-shaped plate (224) are tightly connected.

3. The self-calibrating quick-installation integrated orifice flowmeter according to claim 2, wherein The support component includes: Two telescopic rods (231), the upper ends of the telescopic rods (231) are hinged to the fixing plate (221), and a tightening bolt (232) is installed on the telescopic rods (231); A backing plate (233) arranged in a Z shape, and two slots (2331) matching the telescopic rods (231) are provided on its top surface.

4. The self-calibrating quick-installation integrated orifice flowmeter according to claim 3, wherein A card slot (2332) matching the nut (229) is provided at one end of the backing plate (233).

5. The self-calibrating quick-connect integrated orifice flowmeter according to claim 3, wherein, Two first grooves (2211) for accommodating the telescopic rods (231) are provided on the bottom surface of the fixing plate (221), and a second groove (2212) for accommodating the backing plate (233) is provided on the side surface of the fixing plate (221).

6. The self-calibrating quick-installation integrated orifice flowmeter according to claim 1, characterized in that, It also includes: Two connecting pipes (102), both installed on the horizontal pipe (100), and the two connecting pipes (102) are respectively located on both sides of the orifice plate (101); A measuring mechanism connected to the two connecting pipes (102).

7. The self-calibrating quick-installation integrated orifice flowmeter according to claim 6, wherein The measuring mechanism includes: A flow calculator (111) having two pressure tapping pipes (112), and the two pressure tapping pipes (112) are respectively connected to the two connecting pipes (102).

8. The self-calibrating quick-install integrated orifice flowmeter according to claim 7, wherein The measuring mechanism also includes: A micro-vibration generator (113) installed on the orifice plate (101); A vibration frequency sensor (114) installed on the orifice plate (101); A controller (115) installed on the two pressure tapping pipes (112).

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