A self-calibrating quick-install integrated orifice flowmeter

Abstract

The present invention belongs to the technical field of flow meters, and discloses a self-calibrating quick-install integrated orifice flow meter, comprising a transverse tube integrally formed with an orifice plate and a first flange. The self-calibrating quick-install integrated orifice flow meter also includes a quick-install mechanism, which is used to connect the transverse tube to pipes located on both sides of the transverse tube. The quick-install mechanism in the present invention is capable of completing the rapid connection of the transverse tube to the first connecting pipe and the second connecting pipe by providing a first quick-install component and a second quick-install component, through the cooperation of a V-shaped groove and a V-shaped protrusion, and the fixation of a fastening component. Compared with the traditional installation process using multiple bolts and multiple fastening nuts, the installation speed is significantly improved, installation time is saved, work efficiency is improved, and it is convenient for rapid disassembly at a later stage.

Description

Technical Field

[0001] The invention belongs to the technical field of flow meters, and in particular relates to a self-calibrating quick-install integrated orifice flow meter. Background Art

[0002] In the fields of industrial automation and process control, flow measurement, as a key parameter, is crucial for ensuring production process stability and product quality. Orifice flowmeters, a classic differential pressure flowmeter, are widely used in industries such as petroleum, chemical engineering, metallurgy, and power generation due to their simple structure, wide measurement range, and strong adaptability. Traditional orifice flowmeters typically consist of an orifice plate, upstream and downstream pressure-sensing pipes, flanges, and cross pipes. They calculate fluid flow by measuring the differential pressure across the orifice plate.

[0003] However, with the continuous advancement of industrial technology and the increasing process requirements, traditional orifice flowmeters have gradually exposed some limitations in installation. Specifically, the installation process of traditional orifice flowmeters is often cumbersome, requiring multiple bolts and multiple fastening nuts to connect the cross pipe to the upstream and downstream pipelines. This is not only cumbersome but also very time-consuming. In addition, traditional orifice flowmeters lack support, and external forces can easily cause the orifice flowmeter to shake or displace, thereby reducing the stability of the orifice flowmeter. Summary of the Invention

[0004] The purpose of the present invention is to provide a self-calibrating quick-install integrated orifice flowmeter to solve the technical problem that the installation process of traditional orifice flowmeters in the prior art is often cumbersome and requires the use of multiple bolts and fastening nuts to connect the cross pipe with the upstream and downstream pipelines. Not only is the operation cumbersome, but it is also very time-consuming. In addition, the traditional orifice flowmeter lacks support and is easily shaken or displaced by external forces, thereby reducing the stability of the orifice flowmeter.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A self-calibrating quick-install integrated orifice flowmeter includes a cross tube integrally formed with the orifice plate and a first flange, and also includes: a quick-install mechanism for connecting the cross tube with pipes located on both sides of the cross tube, which includes two groups of first quick-install components, a group of second quick-install components and a group of support components: the first quick-install component includes: a semicircular plate, one side of which is equipped with multiple pull rods, and the pull rods are provided with V-shaped grooves; the second quick-install component includes: a fixed plate, on which a first arc plate and a second arc plate are hinged, and the inner walls of the first arc plate and the second arc plate are both equipped with V-shaped protrusions matching the V-shaped grooves; a fastening component is used to keep the circular ring formed by splicing the first arc plate and the second arc plate in a fastened state, so that the V-shaped protrusions clamp and fix the multiple pull rods through the V-shaped grooves.

[0007] Preferably, the fastening component includes: a first connecting frame fixedly connected to the first arc-shaped plate, with a threaded rod hinged inside the first connecting frame; a second connecting frame fixedly connected to the second arc-shaped plate; and a nut threadedly connected to the threaded rod.

[0008] 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, so as to ensure that the first arc-shaped plate and the second arc-shaped plate are tightly connected after the nut is tightened.

[0009] Preferably, the support assembly includes: two telescopic rods, the upper ends of the telescopic rods are hinged to the fixed plate, and the telescopic rods are equipped with tightening bolts; a pad, which is arranged in a Z shape and has two slots on its top surface that match the telescopic rods.

[0010] Preferably, a slot matching the nut is provided on one end of the pad.

[0011] Preferably, the bottom surface of the fixing plate is provided with two first grooves for accommodating the telescopic rods, and the side surface of the fixing plate is provided with a second groove for accommodating the pad.

[0012] Preferably, it further comprises: two connecting pipes, both installed on the transverse pipe, and the two connecting pipes are respectively located on both sides of the orifice plate; and a measuring mechanism connected to the two connecting pipes.

[0013] Preferably, the measuring mechanism includes: a flow rate calculator having two pressure-taking tubes, and the two pressure-taking tubes are respectively connected to two connecting tubes.

[0014] Preferably, the measuring mechanism further comprises: 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 tubes.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. The quick-install mechanism of the present invention is capable of quickly connecting the cross pipe to the first connecting pipe and the second connecting pipe by providing a first quick-install component and a second quick-install component, through the cooperation of the V-shaped groove and the V-shaped protrusion, and the fixation of the fastening component. 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 at a later time.

[0017] 2. The support assembly of the present invention is equipped with two telescopic rods and a pad. Through the cooperation of the telescopic rods and the pad, the cross pipe can be supported, thereby preventing the cross pipe from shaking or displacing due to external forces, thereby improving the stability of the integrated orifice flowmeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The self-calibration quick-install integrated orifice flowmeter of the present invention is a three-dimensional Figure 1 ;

[0020] Figure 2 This is a three-dimensional diagram of the unfolded support assembly of the self-calibrating quick-install integrated orifice flowmeter of the present invention;

[0021] Figure 3 For the present invention Figure 2 Exploded diagram;

[0022] Figure 4 Schematic diagram of the assembly structure of the cross pipe, the first flange and the flow calculator in the present invention;

[0023] Figure 5 A three-dimensional diagram of the quick-install mechanism of the present invention;

[0024] Figure 6 For the present invention Figure 5 A magnified schematic diagram of part A;

[0025] Figure 7 Schematic diagram of the fixing plate in the present invention when viewed from above;

[0026] Figure 8 Schematic diagram of the assembly structure of the backing plate and the nut in the present invention;

[0027] Figure 9 For the present invention Figure 8 An enlarged schematic diagram of part B;

[0028] Reference numerals: 100, transverse pipe; 101, orifice plate; 102, connecting pipe; 103, first flange; 104, first flange hole; 111, flow rate calculator; 112, pressure-taking pipe; 113, micro-vibration generator; 114, vibration frequency sensor; 115, controller; 211, semicircular plate; 212, pull rod; 213, V-shaped groove; 221, fixing plate; 2211, first groove; 2212, second groove; 222 , mounting groove; 223, first curved plate; 224, second curved 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, pad; 2331, slot; 2332, slot; 300, first connecting pipe; 301, second connecting pipe; 302, second flange; 303, second flange hole. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without creative work should fall within the scope of protection of the present invention.

[0030] 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.

[0031] 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 of other embodiments.

[0032] The present invention is described in detail with reference to the accompanying drawings. When describing embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale for ease of illustration. Furthermore, the accompanying drawings are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0033] 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 cannot be understood as indicating or implying relative importance.

[0034] In this disclosure, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they may refer to fixed, removable, or integral connections. They may also refer to mechanical, electrical, or direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure.

[0035] Example 1: Figure 1-Figure 3 As 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 , and a plurality of first flange holes 104 are opened on the first flange 103 .

[0036] The self-calibrating quick-install integrated orifice flowmeter also includes a quick-install mechanism, which is used to connect the cross pipe 100 with the pipes located on both sides of the cross pipe 100. The pipes located on both sides of the cross pipe 100 are the first connecting pipe 300 and the second connecting pipe 301. The first connecting pipe 300 and the second connecting pipe 301 are both installed with a second flange 302, and the second flange 302 is provided with multiple second flange holes 303.

[0037] The quick-install mechanism includes two groups of first quick-install components, one group of second quick-install components and one group of supporting components.

[0038] The first quick-release assembly includes a semicircular plate 211, and multiple pull rods 212 are installed on one side of the semicircular plate 211. A V-shaped groove 213 is opened on the pull rod 212. The pull rod 212 can pass through the first flange hole 104 and the second flange hole 303. The pull rods 212 on the two semicircular plates 211 are arranged in a one-to-one correspondence with the flange holes on the first flange plate 103.

[0039] The second quick-release assembly includes a fixing plate 221 and a fastening component. A mounting groove 222 is provided on the top surface of the fixing plate 221. A first curved plate 223 and a second curved plate 224 are hinged in the mounting groove 222. The first curved plate 223 and the second curved plate 224 can be spliced ​​together to form a circular ring. V-shaped protrusions 225 that match the V-shaped groove 213 are installed on the inner walls of the first curved plate 223 and the second curved plate 224.

[0040] 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, thereby enabling the V-shaped protrusion 225 to clamp and fix the plurality of pull rods 212 through the V-shaped groove 213 .

[0041] Specifically, when the cross pipe 100 needs to be connected to the first connecting pipe 300 and the second connecting pipe 301, the cross pipe 100 is placed between the first connecting pipe 300 and the second connecting pipe 301, the first flange 103 is aligned with the second flange 302, and the multiple first flange holes 104 and the multiple second flange holes 303 are connected.

[0042] Then, the insertion rod on the semicircular plate 211 is passed through the first flange hole 104 and the second flange hole 303, and then the fixing plate 221 is placed directly below the connection between the cross pipe 100 and the second connecting pipe 301, and then the first curved plate 223 and the second curved plate 224 are opened, and then the fixing plate 221 is moved upward so that the second connecting pipe 301 is located between the first curved plate 223 and the second curved plate 224, so that the V-shaped protrusion 225 is aligned with the V-shaped groove 213, and then the first curved plate 223 and the second curved plate 224 are moved so that the first curved plate 223 and the second curved plate 224 form a circular ring, and part of the V-shaped protrusion 225 is inserted into the V-shaped groove 213, and then the circular ring formed by the splicing of the first curved plate 223 and the second curved plate 224 is kept in a tightened state through the fastening components, so that the V-shaped protrusion 225 is completely inserted into the V-shaped groove 213, so that the V-shaped protrusion 225 clamps and fixes the multiple pull rods 212.

[0043] 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 semicircular plate 211; when the pull rod 212 moves, it will also drive the semicircular plate 211 to move, and then the semicircular plate 211 will push the second flange 302 to move, thereby shortening the distance between the second flange 302 and the first flange 103.

[0044] 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 cross pipe 100 is tightly connected to the first connecting pipe 300 and the second connecting pipe 301 .

[0045] By connecting the cross pipe 100 to the first connecting pipe 300 and the second connecting pipe 301 in this way, the installation speed is greatly improved compared to the traditional connection method using multiple bolts and multiple fastening nuts 229, and it is also convenient to quickly remove the integrated orifice flowmeter from the first connecting pipe 300 and the second connecting pipe 301 later.

[0046] like Figure 5 and Figure 6As shown, the fastening components include a first connecting bracket 226, a second connecting bracket 227, and a nut 229. The first connecting bracket 226 is fixedly connected to the first curved plate 223, and a threaded rod 228 is hingedly connected to the first connecting bracket 226. The second connecting bracket 227 is fixedly connected to the second curved plate 224. The nut 229 is threadedly connected to the threaded rod 228. The length of the threaded rod 228 is greater than the combined thickness of the first connecting bracket 226 and the second connecting bracket 227, ensuring that the first curved plate 223 and the second curved plate 224 are tightly connected after the nut 229 is tightened.

[0047] Specifically, when it is necessary to tightly connect the first curved plate 223 and the second curved plate 224, the threaded rod 228 is rotated so that the threaded rod 228 passes through the second connecting frame 227, and then the nut 229 is rotated so that the nut 229 moves toward the direction close to the second connecting frame 227, thereby causing the nut 229 to squeeze the second connecting frame 227, thereby tightly connecting the second connecting frame 227 and the first connecting frame 226, thereby tightly connecting the first curved plate 223 and the second curved plate 224.

[0048] like Figure 3 、 Figure 6 、 Figure 8 and Figure 9 As shown, the support assembly includes two telescopic rods 231 and a backing plate 233. The upper ends of the telescopic rods 231 are hinged to the fixed plate 221, and a tightening bolt 232 is installed on the telescopic rods 231. The backing plate 233 is arranged in a Z-shape, and two slots 2331 are defined on the top surface of the backing plate 233 for matching with the telescopic rods 231. One end of the backing plate 233 has a slot 2332 that matches the nut 229.

[0049] Specifically, when the nut 229 needs to be tightened, the slot 2332 on the pad 233 is put on the nut 229, and the pad 233 is rotated to drive the nut 229 to rotate. Since the pad 233 increases the lever arm, the nut 229 can be rotated more effortlessly.

[0050] After the cross pipe 100 is connected to the first connecting pipe 300 and the second connecting pipe 301, the two telescopic rods 231 are rotated so that the two telescopic rods 231 are perpendicular to the fixing plate 221, and then the pad 233 is placed under the two telescopic rods 231 so that the two slots 2331 are located directly under the two telescopic rods 231. Then, the overall length of the telescopic rod 231 is adjusted by tightening the bolt 232 so that the lower end of the telescopic rod 231 is plugged into the slot 2331, thereby supporting the cross pipe 100 through the pad 233 and the telescopic rod 231, thereby improving the stability of the cross pipe 100.

[0051] like Figure 7As shown, the bottom surface of the fixing plate 221 is provided with two first grooves 2211 for receiving the telescopic rods 231 , and the side surface of the fixing plate 221 is provided with a second groove 2212 for receiving the pad 233 .

[0052] Specifically, by providing the first groove 2211 and the second groove 2212 , the telescopic rod 231 and the pad 233 can be easily stored, thereby reducing the space occupied by the support assembly when not in use.

[0053] like Figure 4 As shown, a self-calibrating, quick-install integrated orifice flowmeter also includes two connecting tubes 102 and a measuring mechanism. Both connecting tubes 102 are integrally formed with the cross tube 100 and are located on either side of the orifice plate 101. The measuring mechanism is connected to the two connecting tubes 102. The measuring mechanism includes a flow calculator 111 having two pressure-taking tubes 112, each connected to the two connecting tubes 102.

[0054] Working principle: When installing the integrated orifice flowmeter, by placing the cross pipe 100 between the first connecting pipe 300 and the second connecting pipe 301, the first flange 103 is aligned with the second flange 302, so that the multiple first flange holes 104 and the multiple second flange holes 303 are connected.

[0055] Then, the insertion rod on the semicircular plate 211 is passed through the first flange hole 104 and the second flange hole 303, and then the fixing plate 221 is placed directly below the connection between the cross pipe 100 and the second connecting pipe 301, and then the first curved plate 223 and the second curved plate 224 are opened, and then the fixing plate 221 is moved upward so that the second connecting pipe 301 is located between the first curved plate 223 and the second curved plate 224, so that the V-shaped protrusion 225 is aligned with the V-shaped groove 213, and then the first curved plate 223 and the second curved plate 224 are moved so that the first curved plate 223 and the second curved plate 224 form a circular ring, and part of the V-shaped protrusion 225 is inserted into the V-shaped groove 213, and then the circular ring formed by the splicing of the first curved plate 223 and the second curved plate 224 is kept in a tightened state through the fastening components, so that the V-shaped protrusion 225 is completely inserted into the V-shaped groove 213, so that the V-shaped protrusion 225 clamps and fixes the multiple pull rods 212.

[0056] 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 semicircular plate 211; when the pull rod 212 moves, it will also drive the semicircular plate 211 to move, and then the semicircular 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. 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 cross pipe 100 is tightly connected to the first connecting pipe 300 and the second connecting pipe 301.

[0057] Then, by rotating the two telescopic rods 231, the two telescopic rods 231 are perpendicular to the fixed plate 221, and then the pad 233 is placed under the two telescopic rods 231, so that the two slots 2331 are located directly below the two telescopic rods 231, and then the overall length of the telescopic rod 231 is adjusted by tightening the bolts 232, so that the lower end of the telescopic rod 231 is plugged into the slot 2331, thereby supporting the cross tube 100 through the pad 233 and the telescopic rod 231, thereby improving the stability of the cross tube 100.

[0058] Example 2: Figure 4 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is:

[0059] The measuring mechanism also includes a micro-vibration generator 113, a vibration frequency sensor 114, a temperature sensor (not shown), a pressure sensor (not shown), a battery (not shown) and a controller 115. The pressure sensor is mounted on the inner wall of the cross tube 100, the temperature sensor is mounted on the cross tube 100, and the micro-vibration generator 113 is mounted on the orifice plate 101; the battery is mounted on the orifice plate 101, and the battery supplies power to the temperature sensor, pressure sensor, vibration generator and vibration frequency sensor 114.

[0060] 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.

[0061] A vibration frequency sensor 114 is mounted on the orifice plate 101. A MEMS vibration frequency sensor 114 is capable of real-time sampling of the vibration frequency of the orifice plate 101 at a sampling frequency of no less than 10 kHz. The vibration frequency sensor 114 is connected to the controller 115 via a low-noise shielded cable (not shown). A hole (not shown) is provided in the cross tube 100 to allow the low-noise shielded cable to pass through and connect to the controller 115. A seal is provided in the hole to ensure the seal of the cross tube 100.

[0062] Controller 115 is mounted on the two pressure-tapping pipes 112 and includes a control system and alarm. The control system includes a data processing and control unit and a threshold setting unit. The data processing and control unit includes a built-in standard vibration frequency model library, which contains standard vibration frequency data for the normal operation of the orifice plate 101 flowmeter under different operating conditions (e.g., different fluid types, temperatures, and pressures). The threshold setting unit is used to receive a user-set frequency deviation threshold range.

[0063] Working principle: Before use, first set the type of fluid to be transported, and then receive the frequency deviation threshold range set by the user through the threshold setting unit. For example, the frequency deviation threshold is set to ±5% and ±15%. When the deviation between the real-time vibration frequency and the standard vibration frequency (that is, the frequency deviation) is within ±5%, the orifice plate 101 is judged to be in normal operation; when the deviation between the real-time vibration frequency and the standard vibration frequency exceeds 5% and is less than 15%, the orifice plate 101 is judged to have a slight fault (such as slight scaling); when the deviation between the real-time vibration frequency and the standard vibration frequency exceeds 15%, the orifice plate 101 is judged to have a serious fault.

[0064] During specific use, the micro-vibration generator 113 is started, and the micro-vibration generator 113 will drive the orifice plate 101 to generate tiny vibrations with an amplitude 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.

[0065] Then, the vibration frequency data of the orifice plate 101 is detected by the vibration frequency sensor 114, the pressure data is detected by the pressure sensor, and the temperature data is detected by the temperature sensor. 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 the data processing and control unit receives the real-time vibration frequency data, pressure data and temperature data, it compares and analyzes the real-time vibration frequency data with the standard vibration frequency under the corresponding working conditions.

[0066] When a minor fault is determined (the frequency deviation exceeds 5% and is less than 15%), the data processing and control unit will use a linear correction algorithm to calibrate the flow coefficient, specifically:

[0067] The data processing and control unit retrieves 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;

[0068] 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=freal-time-fstandard;

[0069] The corrected flow coefficient is calculated by this model and applied to the differential pressure-flow conversion formula. In the above formula, the flow measurement result is corrected. In the above formula, Q represents the flow rate, C represents the flow coefficient, which is used to correct the theoretical flow calculation value; A represents the flow area of ​​the orifice plate 101; ΔP represents the pressure difference before and after the orifice plate 101; and ρ represents the density of the fluid.

[0070] 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 inspect the flow meter in time.

[0071] The method for obtaining the correction coefficient k includes the following steps:

[0072] 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 by the data processing and control unit. At the same time, the operating condition information during each measurement is recorded, including the fluid type, temperature and pressure, to ensure that the collected data covers a variety of different operating conditions;

[0073] Step 2: Filter out data under the same or similar working conditions from the historical calibration database for analysis and preprocess the filtered data. Preprocessing includes checking the integrity of the data, removing 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.

[0074] Step 3: Based on the linear correction model, C 修正 =C 初始 +k×Δf, the collected flow coefficient correction value is used as the dependent variable y, the vibration frequency deviation value is used 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;

[0075] Step 4: Use the least squares method to perform parameter fitting and find a set of parameters (i.e., k and a) that minimizes the sum of squared errors from the observed data points to the fitted line.

[0076] 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 indicators (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 a model that can accurately describe the relationship between the vibration frequency deviation and the flow coefficient correction value is obtained, 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.

[0077] The measuring mechanism excites the vibration of the orifice plate 101 through a vibration generator, and then collects vibration frequency data in real time through the vibration frequency sensor 114. Then, by comparing and analyzing the real-time vibration frequency data with the built-in standard vibration frequency model library, the working status of the orifice plate 101 is judged according to the vibration frequency deviation. When the vibration frequency deviation exceeds the threshold range set by the user, the alarm is activated to remind the staff to repair it in time, avoiding production interruption caused by faults; when the vibration frequency deviation is within the threshold range set by the user, the flow meter is automatically calibrated. This self-calibration function reduces the need for manual intervention and improves work efficiency.

[0078] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0079] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-calibrating quick-install integrated orifice flowmeter, comprising a transverse tube (100) integrally formed with an orifice plate (101) and a first flange (103), characterized in that: Also includes: The quick-install mechanism is used to connect the transverse pipe (100) with the pipes located on both sides of the transverse pipe (100), and comprises two sets of first quick-install components, one set of second quick-install components and one set of support components: The first quick-install component includes: A semicircular plate (211) is provided with a plurality of pull rods (212) on one side thereof, wherein the pull rods (212) are provided with V-shaped grooves (213); The second quick-install component includes: A fixing plate (221) has a mounting groove (222) on its top surface, a first arc-shaped plate (223) and a second arc-shaped plate (224) are hingedly connected in the mounting groove (222), and V-shaped protrusions (225) matching the V-shaped groove (213) are installed on the inner walls of the first arc-shaped plate (223) and the second arc-shaped plate (224); A fastening component, used to keep the circular 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 protrusion (225) clamps and fixes the multiple pull rods (212) through the V-shaped groove (213); The fastening component comprises: A first connecting frame (226) is fixedly connected to the first arc-shaped plate (223), and a threaded rod (228) is hingedly connected thereto; A second connecting frame (227) is fixedly connected to the second arc-shaped plate (224); a nut (229) threadedly connected to the threaded rod (228); The support assembly comprises: Two telescopic rods (231), the upper ends of the telescopic rods (231) are hinged to the fixed plate (221), and tightening bolts (232) are installed on the telescopic rods (231); The backing plate (233) is arranged in a Z-shape, and has two slots (2331) on its top surface that match the telescopic rod (231).

2. The self-calibrating quick-install 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), so as to ensure that the first arc-shaped plate (223) and the second arc-shaped plate (224) are tightly connected after the nut (229) is tightened.

3. The self-calibrating quick-install integrated orifice flowmeter according to claim 2, characterized in that: A slot (2332) matching the nut (229) is provided on one end of the backing plate (233).

4. The self-calibrating quick-install integrated orifice flowmeter according to claim 3, characterized in that: The bottom surface of the fixing plate (221) is provided with two first grooves (2211) for accommodating the telescopic rod (231), and the side surface of the fixing plate (221) is provided with a second groove (2212) for accommodating the pad (233).

5. The self-calibrating quick-install integrated orifice flowmeter according to claim 1, characterized in that: Also includes: Two connecting pipes (102) are both installed on the transverse 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).

6. The self-calibrating quick-install integrated orifice flowmeter according to claim 5, characterized in that: The measuring mechanism comprises: The flow rate calculator (111) has two pressure-taking pipes (112), and the two pressure-taking pipes (112) are respectively connected to the two connecting pipes (102).

7. The self-calibrating quick-install integrated orifice flowmeter according to claim 6, characterized in that: The measuring mechanism further comprises: A micro-vibration generator (113) is mounted on the orifice plate (101); A vibration frequency sensor (114) is mounted on the orifice plate (101); The controller (115) is installed on the two pressure-taking pipes (112).

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