A multi-range flow measuring device

Abstract

This utility model relates to a multi-range flow measurement device, including a main cavity, a rotating shaft, a damping adjustment module, a sealing assembly, a swing rod assembly, a swing arm assembly, a baffle, a base, and an angle sensor. The rotating shaft is disposed within and extends through the main cavity. One end of the rotating shaft is connected to the damping adjustment module, and the other end is connected to the angle sensor. One end of the swing rod assembly is sleeved on the rotating shaft and securely connected, while the other end of the swing rod assembly is connected to the swing arm assembly, which has a baffle. The main cavity is installed at the flow measurement position via the base. During measurement, the baffle is in direct contact with the fluid. One end of the sealing assembly is connected to the main cavity, and the other end is connected to the swing rod assembly or the swing arm assembly, isolating and sealing the baffle and the fluid outside the main cavity. This utility model enables flexible adjustment and wide-range measurement. The damping adjustment module can adjust the damping force according to actual working conditions, avoiding the measurement inaccuracy caused by the baffle reaching its maximum range at high flow rates.

Description

Technical Field

[0001] This utility model relates to the field of flow measurement, specifically to a multi-level flow measurement device. Background Technology

[0002] Currently, the target flow meter is widely used for flow measurement in drilling fluid outlet pipelines. This flow meter relies on the impact force of mud in the drilling fluid outlet pipeline to change the position of the target, and transmits this change to a sensor through a mechanical structure, thereby measuring and outputting the collected data of the liquid flow rate in the drilling fluid outlet pipeline. Compared to other outlet flow measurement devices based on different principles, the target flow meter has advantages such as low manufacturing cost and convenient on-site installation and maintenance, and therefore has been widely used in drilling operations.

[0003] Currently, most target flow meters used in drilling sites utilize rebound devices to pull the baffle back to its initial state. When the mud flow rate in the outlet pipeline is low, the weight of the counterweight installed on the baffle must be increased to ensure that the baffle can overcome the pulling force of the rebound device and undergo displacement changes under a small fluid impact force. When the mud flow rate in the drilling fluid outlet pipeline is high, the weight of the counterweight on the baffle needs to be reduced; otherwise, under the strong force of the mud fluid, the rebound device will have difficulty pulling the baffle back to its initial state. Frequent disassembly and reassembly of the outlet flow measurement device significantly increases the workload and difficulty of the work, reduces the reliability of the outlet flow measurement device, and makes it impossible to continuously obtain outlet flow monitoring data on site, which may potentially lead to well control safety accidents.

[0004] Furthermore, existing target-type flow meters have a single rebound force and a short service life, making it impossible to flexibly adjust the rebound force according to the actual conditions at the well site. They also have a small measurement range; when the flow rate is high, the baffle can easily be pushed to its maximum operating range, leading to inaccurate measurements. As a load-bearing component of the entire measuring device, the rebound device is generally installed inside the flow measurement unit, requiring the removal of the entire mechanical structure of the flow measurement unit for replacement, causing considerable inconvenience to on-site operations.

[0005] In addition, because the measuring device needs to be immersed in mud for a long time, oil or silt in the mud can easily enter the measuring device, causing the swing arm of the baffle to jam and thus leading to measurement failure. When the measuring device is not used for a long time, the mud on the surface of the baffle will dry and solidify, making it difficult for the measuring device to bounce back to the zero position, which will affect subsequent measurements. Utility Model Content

[0006] The purpose of this invention is to provide a multi-level flow measurement device, which solves the problem of the single force of the traditional rebound device, expands the measurement range, and avoids the problem of inaccurate measurement caused by the baffle reaching the maximum range when the flow rate is high.

[0007] To achieve the above objectives, this utility model provides a multi-level flow measurement device, including a main cavity, a rotating shaft, a damping adjustment module, a sealing assembly, a swing rod assembly, a swing arm assembly, a baffle, a base, and an angle sensor;

[0008] The rotating shaft is set inside the main cavity and passes through the main cavity. One end of the rotating shaft is connected to the damping adjustment module, and the other end of the rotating shaft is connected to the angle sensor.

[0009] One end of the swing arm assembly is sleeved on the rotating shaft and fastened, and the other end of the swing arm assembly is connected to the swing arm assembly. A baffle is provided on the swing arm assembly.

[0010] The main chamber is installed at the flow rate to be measured position via a base; during measurement, the baffle is in direct contact with the fluid.

[0011] One end of the sealing assembly is connected to the main cavity, and the other end of the sealing assembly is connected to the swing rod assembly or the swing arm assembly, thus isolating and sealing the baffle and fluid outside the main cavity.

[0012] Preferably, it also includes an adjusting bolt. The main cavity is provided with an adjusting bolt hole, and the adjusting bolt is installed in the adjusting bolt hole. After installation, the axis of the adjusting bolt is perpendicular to the axis of the rotating shaft. The adjusting bolt can adjust and limit the swing angle of the swing arm assembly.

[0013] Preferably, the rocker arm assembly includes a rotating shaft sleeve and a rocker arm; the rotating shaft sleeve is provided with a second fastening hole;

[0014] The rotating shaft sleeve is fitted onto the rotating shaft and is fastened to the rotating shaft through the second fastening hole. The rotating shaft sleeve and the rotating shaft are relatively stationary.

[0015] The swing arm is bent at a preset angle, with the short end connected to the rotating shaft sleeve and the long end connected to the swing arm assembly.

[0016] Preferably, the swing arm assembly includes a connecting sleeve and a swing arm;

[0017] The swing arm bends at a preset angle, with one end connected to the baffle after bending, and the other end connected to the connecting sleeve at a preset angle.

[0018] The connecting sleeve is fitted onto the rocker arm assembly;

[0019] The end of the swing arm that connects to the baffle is provided with multiple baffle installation positions.

[0020] Preferably, a set of opposite surfaces of the main cavity are provided with shaft mounting holes, and the shaft is disposed in the shaft mounting holes;

[0021] An installation plate is provided on one side of the main cavity. The installation plate is provided with a first damping installation space and a damping position groove. The installation plate is connected to the damping adjustment module through the first damping installation space and the damping position groove.

[0022] The main cavity and the base are integrally formed or separately formed.

[0023] Preferably, two sets of damping slots are symmetrically arranged on both sides of the first damping installation space, and each set has multiple damping slots.

[0024] The damping stop groove has a fixing hole perpendicular to its length direction.

[0025] Preferably, the damping adjustment module includes a damping element and a damping end cap;

[0026] The damping end cap is provided with a damping positioning groove and a second damping installation space. A part of the damping element is installed in the damping positioning groove and the second damping installation space, and the other part of the damping element is installed in the first damping installation space and the damping position groove on the main cavity.

[0027] Two sets of damping positioning grooves are symmetrically arranged on both sides of the second damping installation space.

[0028] The damping end cap is also provided with a positioning pin hole and a second positioning screw hole. The positioning pin hole is used to position with the rotating shaft, and the second positioning screw hole is used to fasten the rotating shaft.

[0029] The damping end cap is provided with a torque hole, which is used to assist the damping end cap in applying damping.

[0030] Preferably, a positioning pin and a first positioning screw hole are provided on the end face of the end where the rotating shaft is connected to the damping adjustment module. The positioning pin is used for positioning with the damping adjustment module; the first positioning screw hole is used for fastening the connection with the damping adjustment module.

[0031] The rotating shaft has a first fastening hole perpendicular to its axial direction, which is used to fasten the rotating shaft sleeve of the rocker arm assembly.

[0032] Preferably, the baffle is bent at a preset angle on both sides along the direction of fluid movement to form a C-shaped structure with three sides;

[0033] The baffle has multiple installation positions.

[0034] Preferably, the sealing assembly includes a first fixed end, a second fixed end, and a sealing sleeve;

[0035] The sealing sleeve is connected to the main cavity and / or the base through the first fixed end, and to the swing rod assembly or the swing arm assembly through the second fixed end;

[0036] The sealing sleeve adopts an asymmetrical corrugated design in the direction of movement of the swing arm assembly or the swing rod assembly, with the corrugated folds with larger relative deformation located on the side with larger movement angle of the swing arm assembly or the swing rod assembly.

[0037] The sealing sleeve adopts a symmetrical corrugated design in the direction of movement perpendicular to the rocker arm assembly or the rocker arm assembly.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. This utility model can achieve flexible adjustment and wide range measurement. The damping adjustment module can adjust the damping force according to the actual working conditions, which solves the defect of the single force of the traditional rebound device, expands the measurement range, and avoids the problem of inaccurate measurement caused by the baffle rushing to the maximum range when the flow rate is large.

[0040] 2. This utility model can reduce on-site workload and operational difficulty, eliminating the need for frequent disassembly and reassembly of the device to adjust the counterweight. Through the damping adjustment module, it can flexibly adapt to different flow scenarios, avoiding the need for repeated addition and subtraction of counterweights due to flow changes in traditional target flow meters. This reduces the difficulty of operation and improves the ease of use of the device. It also reduces component wear and failure risks caused by repeated disassembly of the mechanical structure, extends the service life of the device, and avoids the problem of monitoring data interruption during disassembly and reassembly, which helps to ensure well control safety.

[0041] 3. This invention can avoid the impact of zero-point deviation on subsequent measurements. The damping adjustment module enables the baffle to have initial damping, so that it can return to the initial zero-point state even after a strong impact from the fluid. Moreover, the baffle is C-shaped, combining planar and streamlined designs. After the fluid impacts the middle of the baffle, it flows downstream along both sides of the baffle, reducing the amount of mud adhering to the baffle surface and preventing fluid blockage in the pipeline due to excessive baffle resistance. At the same time, it can also prevent the mud adhering to the baffle from drying and solidifying, reducing the probability that the device will not be able to return to the zero point after a long period of inactivity, thus ensuring the accuracy of subsequent measurements.

[0042] 4. This utility model can enhance sealing performance and reduce the risk of measurement failure. The sealing component isolates the baffle and fluid from the inside of the main cavity, effectively preventing oil and mud in the fluid slurry from entering the device, avoiding the pendulum movement from jamming, and ensuring measurement stability. The sealing component adopts an asymmetrical pleated corrugated design in the direction of pendulum movement, which not only allows for the free movement of the pendulum, but also improves its service life.

[0043] 5. This utility model has a wide measurement range and strong adaptability. The multi-angle bending design of the swing rod assembly and the swing arm assembly expands the movement stroke. The damping adjustment module is further superimposed to amplify the flow measurement range, which can adapt to different measurement scenarios. At the same time, by setting multiple installation positions on the swing arm assembly and the baffle, the length of the baffle extending relative to the main cavity can be adjusted, thereby adapting to pipe diameters with different flow rates to be measured. Attached Figure Description

[0044] Figure 1 This is a cross-sectional structural diagram of the present invention in use;

[0045] Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention;

[0046] Figure 3 This is a utility model Figure 2 A magnified structural diagram of part A in the middle;

[0047] Figure 4 This is a schematic diagram of some components of this utility model, mainly showing the range of motion angles of the swing rod assembly and the swing arm assembly;

[0048] Figure 5 This is a structural schematic diagram of some components of this utility model, mainly showing the angle adjustment of the rocker arm assembly by the adjusting bolt;

[0049] Figure 6 This is a partial cross-sectional front view of the swing arm assembly and the swing rod assembly of this utility model;

[0050] Figure 7 This is a top view of the swing arm assembly and the swing rod assembly of this utility model.

[0051] Figure 8 This is a side view of the rocker arm assembly and rocker rod assembly of this utility model.

[0052] Figure 9 This is a three-dimensional structural diagram of some components of this utility model, mainly showing the main cavity, damping adjustment module and swing arm assembly;

[0053] Figure 10 This is a three-dimensional structural diagram of the main cavity of this utility model;

[0054] Figure 11 This is a partial cross-sectional view of the structure of the main cavity mounting plate of this utility model;

[0055] Figure 12 This is a top view of the main cavity of this utility model.

[0056] Figure 13 This is a three-dimensional structural schematic diagram of the damping end cap of this utility model;

[0057] Figure 14 This is a partial cross-sectional structural schematic diagram of the damping end cap of this utility model;

[0058] Figure 15 This is a front view structural diagram of the rotating shaft of this utility model;

[0059] Figure 16 This is a side view of the rotating shaft of this utility model.

[0060] Figure 17 These are front and side view structural diagrams of the baffle of this utility model;

[0061] Figure 18 This is a structural schematic diagram of the baffle and part of the swing arm assembly of this utility model;

[0062] Figure 19 This is a cross-sectional structural schematic diagram of the sealing assembly of this utility model from one perspective;

[0063] Figure 20 This is a cross-sectional structural schematic diagram of the sealing assembly of this utility model from another perspective;

[0064] Figure 21 This is a top view of the sealing assembly of this utility model.

[0065] In the picture:

[0066] 1-Main cavity; 11-Mounting plate; 12-First damping mounting space; 13-Damping stop groove; 14-Fixing hole; 15-Shaft mounting hole; 16-Adjusting bolt hole;

[0067] 2-Shaft; 21-Positioning pin; 22-First fastening hole; 23-First positioning screw hole;

[0068] 3-Damping adjustment module; 31-Damping positioning groove; 32-Torque hole; 33-Positioning pin hole; 34-Second positioning screw hole; 35-Second damping installation space; 36-Damping element; 37-Damping end cap;

[0069] 4-Sealing assembly; 41-First fixed end; 42-Second fixed end; 43-Sealing sleeve; 44-Center line of the second fixed end; 45-Line connecting the center of the second fixed end and the center of the first fixed end;

[0070] 5-Swing arm assembly; 51-Shaft sleeve; 52-Swing arm; 53-Second fastening hole;

[0071] 6-Swing arm assembly; 61-Connecting sleeve; 62-Swing arm;

[0072] 7-Baffle; 8-Base; 9-Drilling fluid outlet pipeline; 10-Adjusting bolt; 20-Angle sensor. Detailed Implementation

[0073] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0074] Example 1:

[0075] A multi-stage flow measurement device, suitable for flow measurement, especially for drilling fluid outlet pipeline flow measurement, such as... Figure 1-21 As shown, the system includes a main cavity 1, a rotating shaft 2, a damping adjustment module 3, a sealing assembly 4, a swing rod assembly 5, a swing arm assembly 6, a baffle 7, a base 8, and an angle sensor 20. The rotating shaft 2 is located inside and passes through the main cavity 1. One end of the rotating shaft 2 is connected to the damping adjustment module 3, and the other end is connected to the angle sensor 20. One end of the swing rod assembly 5 is sleeved on the rotating shaft 2 and fastened, and the other end of the swing rod assembly 5 is connected to the swing arm assembly 6. The baffle 7 is installed on the swing arm assembly 6. The main cavity 1 is installed at the flow measurement position via the base 8. During measurement, the baffle 7 is in direct contact with the fluid. One end of the sealing assembly 4 is connected to the main cavity 1, and the other end of the sealing assembly 4 is connected to the swing rod assembly 5 or the swing arm assembly 6, thus isolating and sealing the baffle 7 and the fluid outside the main cavity 1.

[0076] like Figure 1-9 As shown, the rocker arm assembly 5 includes a pivot sleeve 51 and a rocker arm 52. The pivot sleeve 51 has a second fastening hole 53. The pivot sleeve 51 is fitted onto the pivot shaft 2 and fastened to the pivot shaft 2 through the second fastening hole 53. The pivot sleeve 51 and the pivot shaft 2 are relatively stationary. The rocker arm 52 is bent at a preset angle, with the short end connected to the pivot sleeve 51 and the long end connected to the rocker arm assembly 6. For example, the rocker arm 52 is bent at 90 degrees. The stroke of the rocker arm 52 is from -20 degrees to 70 degrees.

[0077] like Figure 1-8As shown, the swing arm assembly 6 includes a connecting sleeve 61 and a swing arm 62. The swing arm 62 is bent at a preset angle, with one end connected to a baffle 7 and the other end connected to the connecting sleeve 61 at a preset angle. The connecting sleeve 61 is fitted onto the swing rod assembly 5. Multiple baffle mounting positions are provided at the end of the swing arm 62 connected to the baffle 7. For example, the swing arm 62 is bent at 120 degrees, and there is a 120-degree angle between the swing arm 62 and the connecting sleeve. Multiple mounting positions are provided on the swing arm 62, which are screw holes. The baffle 7 is fastened to different screw holes, thereby changing the distance of the baffle 7 extending into the main cavity, thus adapting to different pipe diameters for different flow rates.

[0078] When using, such as Figure 1 As shown, the entire device is fixed to the pipeline whose flow rate is to be measured via the base 8, for example, on the drilling fluid outlet pipeline 9. The main chamber 1, rotating shaft 2, damping adjustment module 3, base 8, and angle sensor 20 are located outside the pipeline. The part of the swing arm assembly 5 connected to the rotating shaft is also located outside the pipeline. The baffle 7 of the swing arm assembly 6 is located inside the pipeline. The sealing assembly 4 isolates the baffle 7, swing arm assembly 6, and the fluid in the pipeline from the main chamber 1, preventing the fluid in the pipeline from entering the main chamber 1 and avoiding damage to the swing arm assembly 5 and rotating shaft 2. For example, it effectively prevents oil and silt in the fluid mud from entering the device and affecting the movement of the swing arm assembly 5, ensuring the stability of the measurement. Depending on the fluid being measured, an appropriate range is selected, and initial damping is applied to the rotating shaft 2 via the damping adjustment module 3 to adjust the measurement range. During measurement, the fluid impacts the baffle 7, causing the baffle 7 to move, which in turn drives the swing arm assembly 6 and the swing arm assembly 5 to move. The swing arm assembly 5 further drives the rotating shaft 2 to rotate, and the angle measuring device 20 measures the angle of rotation of the rotating shaft 2, converting it into fluid flow rate data. The angle sensor 20 can also transmit measurement data to the integrated logging instrument.

[0079] To ensure sufficient measurement range during the movement of the swing arm assembly 5, the spatial design within the main cavity 1 must accommodate the maximum stroke of the swing arm assembly 5. This invention addresses this by employing a bending design for the swing arm assembly 5 and the swing arm assembly 6, enabling a larger stroke for the swing arm assembly 5 within a smaller main cavity 1, and further amplifying the stroke of the swing arm assembly 6 and the baffle 7 within the pipe. Furthermore, by applying different initial damping to the rotating shaft 2 through the damping adjustment module 3, the flow measurement range can be further amplified using different initial damping, allowing for the application of different measurement scenarios.

[0080] Regarding the materials and processes used in its fabrication, the main cavity 1 is machined from 304 stainless steel and has a symmetrical rectangular structure. When the drilling fluid (fluid) impacts the baffle, causing the rocker arm assembly 5 to move, as... Figure 4As shown, the rotation angle of the lever 52 can vary from -20° to 70°. Compared with existing target-type flow meters, this rotation angle increases the stroke of the lever 52 by approximately 30% to 50%. Rotary shaft mounting holes 15 are provided on both the left and right sides of the main cavity 1, and are connected to the rotating shaft 2 via bushings. The bushings and the rotating shaft mounting holes 15 are interference-fitted. To ensure that the rotating shaft 2 operates without jamming, the concentricity of the two rotating shaft mounting holes 15 must be less than 0.1 mm.

[0081] The rocker arm assembly 5 is welded from seamless 304 stainless steel round tubes of Φ18mm and Φ30mm. To prevent mud or water vapor in the drilling fluid outlet pipeline from entering the main cavity 1 through the gaps in the rocker arm assembly 5, thereby damaging the key components inside the main cavity 1, the weld seam needs to be fully welded and ensured to be watertight. The Φ30mm 304 stainless steel tube serves as the shaft sleeve 51 and connects to the shaft 2, while the Φ18mm 304 stainless steel tube serves as the rocker arm 52 and connects to the rocker arm assembly 6. Both the end of the rocker arm 52 and the connecting sleeve 61 of the rocker arm assembly 6 are machined with Φ6mm through holes, and then the two are connected by fasteners passing through the through holes.

[0082] The swing arm assembly 6 is welded from 304 stainless steel pipes and strips with an outer diameter of Φ22mm. The Φ22mm 304 stainless steel pipe serves as a connecting sleeve 61, which is assembled with the swing arm 52 of the swing arm assembly 5. To ensure the reliability and stability of the device during operation, the assembly gap at the connection between the swing arm 52 and the connecting sleeve 61 is no greater than 0.5mm. The strip serves as the swing arm 62, and multiple Φ6mm mounting holes are machined at its connection end with the baffle 7. When the baffle 7 is installed on the swing arm 62, different mounting hole positions can be selected vertically, allowing the baffle 7 to be installed at different positions on the swing arm 62 to achieve height adjustment to accommodate different pipe diameters.

[0083] Example 2:

[0084] This embodiment is an improvement based on Embodiment 1, specifically the following improvements: Figure 9-16As shown, a set of opposite surfaces of the main cavity 1 are provided with shaft mounting holes 15, and the shaft 2 is disposed in the shaft mounting holes 15; a mounting plate 11 is provided on one side surface of the main cavity 1, and the mounting plate 11 is provided with a first damping mounting space 12 and a damping position groove 13. The mounting plate 11 is connected to the damping adjustment module 3 through the first damping mounting space 12 and the damping position groove 13. The damping position groove 13 is provided with a fixing hole 14 perpendicular to its length direction; the damping adjustment module 3 includes a damping element 36 and a damping end cap 37; the damping end cap 37 is provided with a damping positioning groove 31 and a second damping mounting space 35. Part of the damping element 36 is installed in the damping positioning groove 31 and the second damping mounting space 35, and the other part of the damping element 36 is installed in the main cavity. The first damping mounting space 12 and damping position groove 13 on the 1; the damping end cap 37 is also provided with a positioning pin hole 33 and a second positioning screw hole 34, the positioning pin hole 33 is used to position with the rotating shaft 2, and the second positioning screw hole 34 is used to fasten the rotating shaft 2; the damping end cap 37 is provided with a torque hole 32, the torque hole 32 is used to assist the damping end cap 37 in applying damping; the end face of the rotating shaft 2 connected to the damping adjustment module 3 is provided with a positioning pin 21 and a first positioning screw hole 23, the positioning pin 21 is used to position with the damping adjustment module 3; the first positioning screw hole 23 is used to fasten the damping adjustment module 3; the rotating shaft 2 is provided with a first fastening hole 22 perpendicular to its axial direction, the first fastening hole 22 is used to fasten the rotating shaft sleeve 51 of the rocker arm assembly 5.

[0085] During damping adjustment, first install one end of the damping element 36 in the first damping mounting space 12 and damping position groove 13 on the mounting plate 11, and then install the other end of the damping element 36 in the second damping mounting space 35 and damping positioning groove 31 on the damping end cover. By rotating the damping end cover 37, the positioning pin hole 33 on the damping end cover 37 is aligned with the positioning pin 21 on the rotating shaft 2. For example, there are two positioning pins 21 and two positioning pin holes 33, or there can be multiple positioning pins. Insert the positioning pin 21 into the positioning pin hole 33. At this time, the first positioning screw hole 23 on the rotating shaft 2 is aligned with the second positioning screw hole 34 on the damping end cover 37. By screwing the fastening element into the first positioning screw hole 23 and the second positioning screw hole 34, the damping end cover 37 is fastened to the rotating shaft 2, and damping is applied to the rotating shaft 2 at the same time. Since the damping element 36 has damping, it is quite difficult to directly rotate the damping end cap 37. A screw can be screwed into the torque hole 32 to assist in rotating the damping end cap 37 to the alignment position.

[0086] For ease of use, both left-handed and right-handed damping elements 36 are compatible, such as torsion springs. Two sets of damping position slots 13 are symmetrically arranged on both sides of the first damping mounting space 12, one set for left-handed damping elements 36 and the other for right-handed damping elements 36. Two sets of damping positioning slots 31 are symmetrically arranged on both sides of the second damping mounting space 35, one set for left-handed damping elements 36 and the other for right-handed damping elements 36. In use, the damping element 36 can be installed according to its specific type. The two sets of damping position slots 13 symmetrically arranged on the mounting plate 11 each have multiple damping position slots 13. This allows for different damping applications when the same damping element 36 is installed in different damping position slots 13. For example,... Figure 10 , Figure 11 As shown, each group has three damping level slots 13: L (low), M (medium), and H (high). Furthermore, to ensure a secure and stable installation of the damping element 36, each damping level slot 13 has a fixing hole 14 perpendicular to its length. Fasteners are screwed into the fixing holes 14 to fix one end of the damping element 36 to the mounting plate 11 of the main cavity 1. When selecting different damping levels based on the flow rate to be measured, only the damping element 36 needs to be replaced or placed in a different damping level slot 13; the entire device does not need to be disassembled.

[0087] The main cavity 1 and the base 8 are integrally formed or separately formed. The purpose of the base 8 is to fix the device on the pipe to be measured. It can be designed as an integral part of the main cavity 1 or separately from the main cavity 1.

[0088] For example, such as Figure 10 , Figure 11 As shown, the damping groove 13 is machined on the side of the main cavity 1. The damping groove 13 is designed with a symmetrical structure, which can use both left-handed and right-handed torsion spring damping. According to the damping magnitude provided by the position of the damping groove 13, it can be divided into high (H), medium (M) and low (L). The angle between the highest level H and the center line of the opening on the main cavity 1 where the rotating shaft 2 is installed is 150°. The angle between the center line of the groove of the medium level M and the center line of the groove of the H level is 22°. The angle between the center line of the groove of the lowest level L and the center line of the groove of the M level is 23°. The damping position groove 13 is designed to be 4mm wide and 12mm deep. Each damping position groove 13 has an M8 threaded hole in the middle as a fixing hole 14. When the damping element 36 is a torsion spring, when the straight leg of the torsion spring damper is located in the damping position groove 13, the torsion spring damper is pressed into the damping position groove 13 with an M8 set screw.

[0089] Based on the width and depth of the damping slot 13, the damping element 36 can be selected from torsion springs with a wire diameter of 2.5mm to 3.5mm and 5 or 6 turns. The damping direction can be either left-handed or right-handed, and the included angle of the straight leg of the torsion spring is 150°. With the same damping element 36, from the low L level to the high H level, each increase in level increases the torque by approximately 50%. This design allows users to easily select different damping slots 13 according to actual site conditions.

[0090] The damping element 36 is fitted onto the end of the rotating shaft 2 outside the main cavity 1. One straight leg is installed in the damping position groove 13, and the other straight leg is fixed in the damping positioning groove 31 of the damping end cap 37. The damping end cap 37 is a circular 304 stainless steel machined part. A damping positioning groove 31 with a width of 4mm is machined at a position 15mm away from the center line of the two positioning pin holes 33. After the damping positioning groove 31 is engaged with the damping position groove 13 of the main cavity 1, the two positioning pin holes 33 are fixed on the positioning pins 21 at the end of the rotating shaft 2 by rotating the damping end cap 37. Fasteners are used in the first positioning screw hole 23 and the second positioning screw hole 34 to firmly connect the torsion spring damping, the damping end cap 37 and the rotating shaft 2, which together ensure the reliability and stability of the multi-level damping quick adjustment module. In addition, the damping end cap 37 has an M8 threaded blind hole machined in the thickness direction. When a higher strength damping torsion spring is selected or when it is installed in the H position, an M8 stud can be screwed in as a point of force to facilitate tightening the device.

[0091] The rotating shaft 2 is a transmission component that connects the rocker arm assembly 5 and the main cavity 1. The rotating shaft 2 is connected to the rotating shaft sleeve 51 on the rocker arm assembly 5 by fasteners. When the fluid mud in the drilling fluid outlet pipeline impacts the baffle 7 and causes the rocker arm 52 to undergo angular displacement, the rotating shaft 2 transmits the displacement to the angle sensor 20.

[0092] Example 3:

[0093] This embodiment is an improvement based on Embodiment 1 or Embodiment 2, specifically the following improvements: Figure 17 , Figure 18 As shown, the baffle 7 is bent at a preset angle on both sides along the direction of fluid movement to form a C-shaped structure with three sides; the baffle 7 is provided with multiple installation positions.

[0094] For example, such as Figure 17As shown, the baffle 7 is bent at 30 degrees on both sides along the direction of fluid movement. The design of the baffle 7 should reduce fluid adhesion, while the baffle 7 needs to withstand a certain amount of fluid resistance to drive the swing arm 52 to rotate. Therefore, the baffle 7 should adopt a combination of planar and streamlined design. When the fluid mud in the drilling fluid outlet pipeline impacts the baffle 7, the fluid mud is diverted along both sides of the baffle 7 and continues to flow downstream of the mud pipeline. This shape design reduces the amount of fluid adhering to the baffle and avoids fluid blockage in the pipeline due to excessive baffle resistance. The baffle 7 is designed with multiple installation positions, such as multiple mounting holes. When the baffle 7 is installed on the swing arm 62, different mounting hole positions can be selected on the baffle 7, and the different installation positions on the swing arm 62 can be superimposed to make the device adaptable to a wider range of pipeline diameters.

[0095] Example 4:

[0096] This embodiment is an improvement based on Embodiment 1, Embodiment 2, or Embodiment 3, specifically the following improvements: Figure 19-21 As shown, the sealing assembly 4 includes a first fixed end 41, a second fixed end 42, and a sealing sleeve 43; the sealing sleeve 43 is connected to the main cavity 1 and / or the base 8 through the first fixed end 41, and to the swing rod assembly 5 or the swing arm assembly 6 through the second fixed end 42; the sealing sleeve 43 adopts an asymmetrical corrugated design in the direction of movement of the swing rod assembly 5 or the swing arm assembly 6, with the corrugated pleats of relatively large deformation located on the side of the swing rod assembly 5 or the swing arm assembly 6 with a large angle of movement; the sealing sleeve 43 adopts a symmetrical corrugated design in the direction perpendicular to the direction of movement of the swing rod assembly 5 or the swing arm assembly 6.

[0097] For example, the center line 44 of the second fixed end passes through one-third of the position of the first fixed end 41 in the direction of movement of the swing arm 52, and the distance from the corrugated folds at both ends to the line 45 connecting the center of the second fixed end and the center of the first fixed end is equal.

[0098] To prevent fluids such as mud or water vapor from entering the main cavity 1 and damaging its internal components, a sealing assembly 4 is designed to fit the main cavity 1. The sealing sleeve of the sealing assembly 4 is a retractable rubber protective sleeve, and the first fixed end 41 and the second fixed end 42 are composed of pressure plate flanges, clamping components, etc. Because the movement angle of the swing arm 52 in the swing arm assembly 5 is not symmetrical, the retractable rubber protective sleeve is designed with an asymmetrical structure, such as... Figure 19As shown, after compression, the center of the Φ18mm cylindrical small end of the second fixed end 42 is located at 1 / 3 of the distance from the longitudinal line of the flange of the first fixed end 41. The retractable rubber protective sleeve has 5 layers of compression pleats. The distance from the concave corrugated corner of each compression pleat to the line 45 connecting the center of the second fixed end and the center of the first fixed end is equal, and the convex corrugated corner of each compression pleat is located on the line connecting the edges of the first fixed end 41 and the second fixed end 42. Compared with the symmetrical corrugated pleat design, this design concept allows the corrugated pleats with larger deformation to be located on the side with a larger movement angle of the swing arm 52, so that its expansion and contraction deformation meets the needs of the swing arm 52's movement stroke. The corrugated pleats on the side with a smaller movement angle of the swing arm 52 have smaller deformation. When the swing arm 52 moves at a small angle, the corrugated pleats can meet the stroke without excessive excess. In the direction perpendicular to the movement direction of the swing arm 52 (along the flange width direction), the retractable rubber protective sleeve does not have a large deformation requirement, so the corrugated pleats adopt a symmetrical design. The retractable rubber protective sleeve is made of oil-resistant and high-temperature-resistant hydrogenated nitrile rubber. The second fixed end 42 is designed as a flange face, which mates with the machined sealing surface of the main cavity 1. After the pressure plate flange presses the flange face of the retractable rubber protective sleeve against the machined sealing surface of the main cavity 1, it is firmly connected with fasteners. The first fixed end 41 of the retractable rubber protective sleeve is a cylindrical interface with a height of 20mm and an inner diameter of Φ18mm, which is fitted onto the Φ18mm stainless steel tube section of the swing rod 52 and pressed tightly with clamping parts.

[0099] Example 5:

[0100] This embodiment is an improvement based on Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4. The specific improvements are as follows: Figure 5 As shown, it also includes an adjusting bolt 10. The main cavity 1 is provided with an adjusting bolt hole 16. The adjusting bolt 10 is installed in the adjusting bolt hole 16. After installation, the axis of the adjusting bolt 10 is perpendicular to the axis of the rotating shaft 2. The adjusting bolt 10 can adjust and limit the swing angle of the swing arm assembly 5 to adapt to the needs of different flow measurement scenarios and prevent the swing arm 52 from being damaged due to excessive movement angle.

[0101] An M10 threaded hole is machined at each of the front and rear ends of the main cavity 1 along the direction of movement of the swing arm 52. In actual field applications, the rotation angle of the swing arm can be limited by adjusting the bolt 10, and the initial angle of the swing arm 52 can also be adjusted.

[0102] In this utility model, the use of directional terms such as "upper," "lower," "left," "right," "bottom," and "top" is defined relative to the directions shown in the accompanying drawings and is used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. These or other directional terms should not be construed as restrictive terms.

[0103] In this utility model, the use of words such as "a," "an," "a kind," and "the" does not indicate a quantity limitation and can represent singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," and "third" used in this utility model are merely to distinguish similar objects and do not represent a specific ordering of objects.

[0104] In this invention, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not exist between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may not be directly connected to the other devices but may have an intermediary device.

[0105] Furthermore, this utility model does not discuss in detail the technologies and equipment known to those skilled in the art, but where appropriate, such technologies and equipment should be considered part of the specification.

[0106] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A multi-level flow measurement device, characterized in that, It includes a main cavity (1), a rotating shaft (2), a damping adjustment module (3), a sealing assembly (4), a swing rod assembly (5), a swing arm assembly (6), a baffle (7), a base (8), and an angle sensor (20); The rotating shaft (2) is set inside the main cavity (1) and passes through the main cavity (1). One end of the rotating shaft (2) is connected to the damping adjustment module (3), and the other end of the rotating shaft (2) is connected to the angle sensor (20). One end of the swing arm assembly (5) is sleeved on the rotating shaft (2) and fastened, and the other end of the swing arm assembly (5) is connected to the swing arm assembly (6). A baffle (7) is provided on the swing arm assembly (6). The main cavity (1) is installed at the position where the flow rate is to be measured via the base (8); during measurement, the baffle (7) is in direct contact with the fluid. One end of the sealing assembly (4) is connected to the main cavity (1), and the other end of the sealing assembly (4) is connected to the swing rod assembly (5) or the swing arm assembly (6), and the baffle (7) and fluid isolation seal are sealed outside the main cavity (1).

2. The multi-level flow measurement device according to claim 1, characterized in that, It also includes an adjusting bolt (10). The main cavity (1) is provided with an adjusting bolt hole (16). The adjusting bolt (10) is installed in the adjusting bolt hole (16). After installation, the axis of the adjusting bolt (10) is perpendicular to the axis of the rotating shaft (2). The adjusting bolt (10) can adjust and limit the swing angle of the swing arm assembly (5).

3. The multi-level flow measurement device according to claim 1, characterized in that, The rocker arm assembly (5) includes a rotating shaft sleeve (51) and a rocker arm (52); the rotating shaft sleeve (51) is provided with a second fastening hole (53); The rotating shaft sleeve (51) is sleeved on the rotating shaft (2) and is fastened to the rotating shaft (2) through the second fastening hole (53). The rotating shaft sleeve (51) and the rotating shaft (2) are relatively stationary. The swing arm (52) is bent at a preset angle, and the short end after bending is connected to the rotating shaft sleeve (51), and the long end after bending is connected to the swing arm assembly (6).

4. The multi-level flow measurement device according to claim 1, characterized in that, The swing arm assembly (6) includes a connecting sleeve (61) and a swing arm (62); The swing arm (62) bends at a preset angle, one end of which is connected to the baffle (7) after bending, and the other end of which is connected to the connecting sleeve (61) and has a preset angle with the connecting sleeve (61). The connecting sleeve (61) is fitted onto the rocker arm assembly (5); Multiple baffle installation positions are provided at one end of the swing arm (62) that is connected to the baffle (7).

5. The multi-level flow measurement device according to claim 1, characterized in that, A set of opposite surfaces of the main cavity (1) are provided with a rotating shaft mounting hole (15), and the rotating shaft (2) is disposed in the rotating shaft mounting hole (15); A mounting plate (11) is provided on one side of the main cavity (1). The mounting plate (11) is provided with a first damping mounting space (12) and a damping position groove (13). The mounting plate (11) is connected to the damping adjustment module (3) through the first damping mounting space (12) and the damping position groove (13). The main cavity (1) and the base (8) are integrally formed or separately formed.

6. The multi-stage flow measurement device according to claim 5, characterized in that, The damping slots (13) are arranged symmetrically on both sides of the first damping installation space (12), and each group has multiple damping slots (13). The damping stop groove (13) has a fixing hole (14) perpendicular to its length direction.

7. The multi-stage flow measurement device according to claim 1, characterized in that, The damping adjustment module (3) includes a damping element (36) and a damping end cap (37); The damping end cap (37) is provided with a damping positioning groove (31) and a second damping installation space (35). A part of the damping element (36) is installed in the damping positioning groove (31) and the second damping installation space (35), and the other part of the damping element (36) is installed in the first damping installation space (12) and the damping position groove (13) on the main cavity (1). Two sets of damping positioning grooves (31) are symmetrically arranged on both sides of the second damping installation space (35); The damping end cap (37) is also provided with a positioning pin hole (33) and a second positioning screw hole (34). The positioning pin hole (33) is used to position with the rotating shaft (2), and the second positioning screw hole (34) is used to fasten to the rotating shaft (2). The damping end cap (37) is provided with a torque hole (32), which is used to assist the damping end cap (37) in applying damping.

8. The multi-stage flow measurement device according to claim 1, characterized in that, The end face of the rotating shaft (2) connected to the damping adjustment module (3) is provided with a positioning pin (21) and a first positioning screw hole (23). The positioning pin (21) is used to position with the damping adjustment module (3); the first positioning screw hole (23) is used to fasten the connection with the damping adjustment module (3). The rotating shaft (2) is provided with a first fastening hole (22) perpendicular to its axial direction. The first fastening hole (22) is used to fasten to the rotating shaft sleeve (51) of the rocker arm assembly (5).

9. The multi-level flow measurement device according to claim 1, characterized in that, The baffle (7) is bent at a preset angle on both sides along the direction of fluid movement to form a C-shaped structure with three sides; The baffle (7) has multiple installation positions.

10. The multi-stage flow measurement device according to claim 1, characterized in that, The sealing assembly (4) includes a first fixed end (41), a second fixed end (42), and a sealing sleeve (43); The sealing sleeve (43) is connected to the main cavity (1) and / or the base (8) through the first fixed end (41), and to the swing rod assembly (5) or the swing arm assembly (6) through the second fixed end (42); The sealing sleeve (43) adopts an asymmetrical corrugated design in the direction of movement of the swing arm assembly (5) or the swing arm assembly (6), with the corrugated folds with larger relative deformation located on the side with larger movement angle of the swing arm assembly (5) or the swing arm assembly (6). The sealing sleeve (43) adopts a symmetrical corrugated design in the direction of movement perpendicular to the rocker arm assembly (5) or the rocker arm assembly (6).

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