An apparatus for testing the effect of fluid viscosity on the accuracy of a coriolis flowmeter

Abstract

The application discloses a device for testing the influence of fluid viscosity on the precision of a coriolis flowmeter, and relates to the technical field of fluid measurement and testing equipment, comprising two coriolis flowmeters, wherein one end of the coriolis flowmeter is connected with a viscosity adjusting assembly; the viscosity adjusting assembly comprises a mounting shell, a magnetic driving assembly is mounted on the outer wall of the mounting shell, a rotating assembly is rotationally connected in the mounting shell, a shearing assembly is fixedly connected with the rotating assembly, a heating assembly is slidably connected with the shearing assembly, and a magnetic induction assembly is coaxially mounted on the shearing assembly; the non-contact synchronous driving of the internal rotating assembly is realized through the magnetic coupling between the magnetic driving assembly and the magnetic induction assembly, the rotating sleeve is driven to move in a spiral line, the switchable contact between the heating cylinder and the fluid or the shearing assembly is realized, the pure heat heating field and the rotating shearing disturbance field can be respectively constructed through the bidirectional regulation and control of the brushless motor, and the regulation and control precision and the functional diversity of the experimental device are enhanced.

Description

Technical Field

[0001] This invention relates to the field of fluid measurement and testing equipment technology, specifically to a device for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter. Background Technology

[0002] Coriolis flow meters are widely used in industrial fields with extremely high metering accuracy requirements due to their ability to directly measure mass flow rate. However, in actual working conditions, changes in fluid viscosity significantly affect the stability and accuracy of the Coriolis flow meter measurement signal. Especially under high viscosity or low viscosity high-speed flow conditions, the additional damping generated by the fluid on the measuring tube will interfere with its vibration characteristics, causing a shift in phase difference measurement, which in turn causes distortion of the flow meter output value. Existing testing methods often involve comparing and verifying by changing different types of liquids, adjusting process parameters, or changing the flow meter model. This not only results in long testing cycles, non-closed processes, and uncontrollable fluid states, but also makes it difficult to maintain consistent viscosity levels and temperature field distributions under different test conditions. This leads to a lack of comparability of test data, and the inability to effectively separate the sources of measurement error, causing some experimental conclusions to become completely invalid. In addition, some studies have attempted to introduce heating devices to control the temperature of fluids and thus adjust their viscosity. However, most of these studies use external heating or pipeline heating, which has low thermal efficiency, slow response, and cannot simulate dynamic viscosity changes under conditions such as shear disturbances. This greatly limits their application value in scientific research testing and instrument calibration. In the case of high-viscosity fluids (such as syrup, lubricating oil, and resin) or highly shear-sensitive fluids (such as emulsions and polymer liquids), existing devices can hardly provide a continuous, controllable, and accurate viscosity adjustment mechanism, which seriously restricts the depth and reliability of research on the response characteristics of Coriolis flowmeters under extreme viscosity conditions. In summary, existing technologies have significant shortcomings in terms of testing methods, control methods, and controllability of the measurement process. There is a need for a testing device that is compact, has reliable transmission, possesses multi-level viscosity control capabilities, and can perform real-time comparative measurements. This device would be used to systematically analyze the impact of fluid viscosity changes on the measurement accuracy of Coriolis flowmeters, in order to meet the practical needs of instrument development, performance evaluation, and calibration correction. Summary of the Invention

[0003] The purpose of this invention is to provide an apparatus for testing the effect of fluid viscosity on the accuracy of a Coriolis flow meter, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: It includes two Coriolis flow meters, one of which is coaxially fixedly connected to a viscosity adjustment component at its end. The viscosity adjustment component includes a mounting shell, which is coaxially fixedly connected to the Coriolis flow meter. A magnetic drive component is mounted on the outer wall of the mounting shell, and a rotating component is rotatably connected inside the mounting shell. A shearing component is coaxially fixedly connected to the front end of the rotating component, and a heating component is slidably connected inside the shearing component. A magnetic induction component is coaxially fixedly mounted on the front end face of the shearing component. A common infusion tube is connected to the front end face of the mounting shell and the other Coriolis flow meter.

[0005] As a further embodiment of the present invention, the magnetic drive assembly includes a rotating cylinder, which is rotatably connected to the outer wall of the mounting shell, and a plurality of external magnetic sheets are fixedly installed at equal intervals around the inner wall of the rotating cylinder.

[0006] As a further embodiment of the present invention, a gear ring is coaxially fixedly installed on the outer wall of the rotating cylinder, a drive gear is rotatably connected to the outer wall of the mounting shell, a brushless motor is coaxially fixedly installed on the shaft of the drive gear, and a transmission belt is sleeved on both the drive gear and the outer wall of the gear ring.

[0007] As a further embodiment of the present invention, the rotating assembly includes a rotating disk, and a rotating rod is fixedly installed at the center of the rear end face of the rotating disk, the rotating rod being rotatably connected inside the mounting shell.

[0008] As a further embodiment of the present invention, a connecting cylinder is fixedly installed at the center of the front end face of the rotating disk, and a raffle tube is coaxially fixedly installed on the outer wall of the connecting cylinder.

[0009] As a further embodiment of the present invention, the shearing assembly includes a mounting cylinder, with mounting rings coaxially welded and fixed on both the front and rear ends of the mounting cylinder, and several support frames equidistantly mounted on the outer circumference of the two mounting rings.

[0010] As a further embodiment of the present invention, an elastic membrane is fixedly installed on the outer wall of the mounting cylinder, and the outer walls of several supporting frames are fixedly connected to the inner wall of the elastic membrane.

[0011] As a further embodiment of the present invention, the heating assembly includes a rifle sleeve, which is slidably sleeved on the outer wall of the rifle tube.

[0012] As a further embodiment of the present invention, a heating cylinder is coaxially fixedly installed on the outer wall of the rifle sleeve, the outer wall size of the heating cylinder is adapted to the inner wall size of the mounting cylinder, an electric heating wire is fixedly installed inside the heating cylinder, and a turbine is coaxially fixedly installed on the front end face of the rifle sleeve.

[0013] As a further embodiment of the present invention, the magnetic induction assembly includes an induction cylinder, the rear end face of the induction cylinder and the front end face of the mounting cylinder are coaxially and fixedly connected, and a plurality of inner magnetic sheets are equidistantly installed on the outer circumference of the induction cylinder, and a ceramic ring is sleeved on the outer wall of the plurality of inner magnetic sheets.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In the process of use, the present invention sets up two Coriolis flow meters for comparative measurement, one of which serves as a reference channel and the other is connected to the viscosity adjustment component. The measurement data before and after the controlled viscosity change can be obtained in real time under the same fluid conditions, avoiding interference caused by differences in fluid source or changes in the external environment. The experimental results have higher consistency and comparability, which facilitates the accurate evaluation of the impact of fluid viscosity on the measurement accuracy of the Coriolis flow meter. 2. During use, this invention achieves non-contact synchronous driving of the mounting cylinder and its internal rotating components through magnetic coupling between the magnetic drive component and the magnetic induction component. This, in turn, drives the rifling sleeve in the heating component to move linearly in a spiral motion, enabling switchable contact between the heating cylinder and the fluid or shearing component. This structure not only has good transmission stability and electromagnetic isolation, but also allows for the construction of two physical environments—a pure heat heating field and a rotating shear disturbance field—through bidirectional control of the brushless motor. This enables targeted adjustment of the fluid viscosity change path, enhancing the control precision and functional versatility of the experimental device. 3. During use, this invention, by setting an elastic membrane inside the shearing component to work in conjunction with the expanding oil to form a deformable shearing structure, forms a stable shear disturbance field during rotation, further reducing the fluid viscosity. Combined with the effect of the heat field, it achieves a thermo-mechanical coupling viscosity reduction effect. The overall device has advantages such as strong structural linkage, controllable adjustment process, and reliable experimental results in the testing of thermosensitive viscous fluids, and can provide a high-precision and highly repeatable experimental basis for scientific research testing, instrument calibration and other fields. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the overall structure of the present invention; Figure 3 This is an exploded view of the impact protection device structure of the present invention; Figure 4 This is a schematic diagram of the viscosity adjustment component structure of the present invention; Figure 5 This is an exploded view of the viscosity adjustment component structure of the present invention; Figure 6 This is a part drawing of the mounting shell structure of the present invention; Figure 7 This is an exploded view of the magnetic drive component structure of the present invention; Figure 8 This is an exploded view of the rotating component structure of the present invention; Figure 9 This is an exploded view of the shearing component structure of the present invention; Figure 10This is an exploded view of the heating component structure of the present invention; Figure 11 This is an exploded view of the magnetic induction component structure of the present invention; Figure 12 This is a cross-sectional view of the overall structure of the present invention.

[0016] In the picture: 1. Coriolis flow meter; 2. Viscosity adjustment assembly; 21. Mounting housing; 211. Rotating groove; 212. Mounting arm; 213. Rotating frame; 3. Magnetic drive assembly; 31. Rotating cylinder; 32. Outer magnetic sheet; 33. First bearing; 34. Second bearing; 35. Gear ring; 36. Drive gear; 37. Brushless motor; 38. Drive belt; 4. Rotating assembly; 41. Rotating disk; 411. Rotating rod; 412. Connecting cylinder; 413. Sliding groove; 42. Third bearing; 43. Rifle tube; 5. Shearing assembly; 51. Mounting cylinder; 511. Mounting ring; 52. Support frame; 53. Elastic membrane; 6. Heating assembly; 61. Rifle sleeve; 611. Limiting rod; 62. Heating cylinder; 63. Heating wire; 64. Connecting bracket; 65. Turbine; 7. Magnetic induction assembly; 71. Induction cylinder; 72. Inner magnetic sheet; 73. Ceramic ring; 8. Infusion tubing; 9. Impact protection device; 91. Fixed ring; 92. Movable plate; 93. Torsion spring. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figures 1-6 , Figure 12A device for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter includes two Coriolis flowmeters 1. One of the Coriolis flowmeters 1 has a viscosity adjustment assembly 2 coaxially fixedly connected to its end. The viscosity adjustment assembly 2 includes a mounting housing 21, which is coaxially fixedly connected to the Coriolis flowmeter 1. Specifically, one Coriolis flowmeter 1 serves as a reference value for the measurement data, while the other Coriolis flowmeter 1 is connected to the viscosity adjustment assembly 2 to detect the effect of fluid viscosity on the value of the Coriolis flowmeter 1. The rear end face of the mounting housing 21 is bolted to the Coriolis flowmeter 1. The front end of the flow meter 1 is fixedly connected to a magnetic drive assembly 3 installed on the outer wall of the mounting housing 21. A rotating assembly 4 is rotatably connected inside the mounting housing 21. A shearing assembly 5 is coaxially fixedly connected to the front end of the rotating assembly 4. A heating assembly 6 is slidably connected inside the shearing assembly 5. A magnetic induction assembly 7 is coaxially fixedly installed on the front end of the shearing assembly 5. Specifically, the magnetic induction assembly 7 can form a magnetic coupling with the magnetic drive assembly 3. The magnetic drive assembly 3 drives the magnetic induction assembly 7 to rotate synchronously through the magnetic coupling. The front end of the mounting housing 21 and the front end of another Coriolis flow meter 1 are connected to a common infusion tube 8.

[0019] Specifically, the infusion tube 8 is a three-way tube. The two branch tubes of the infusion tube 8 are respectively fixedly connected to the mounting housing 21 and another Coriolis flow meter 1 used for measuring data via bolts. An anti-shock device 9 is installed inside the main tube of the infusion tube 8. The anti-shock device 9 is used to prevent damage to the Coriolis flow meter 1 from sudden water flow and high-pressure fluid. The anti-shock device 9 includes a retaining ring 91, which is coaxially fixedly installed on the inner wall of the infusion tube 8. A movable plate 92 is hinged to the rear end face of the retaining ring 91. The dimensions of the movable plate 92 are the same as those of the retaining ring 91. The inner wall dimensions are compatible. A torsion spring 93 is installed between the pivot of the movable plate 92 and the hinge of the fixed ring 91. The torsion spring 93 exerts a flipping force on the movable plate 92. When there is no water inside the infusion tube 8, the movable plate 92 is engaged with the center hole of the fixed ring 91 under the action of the torsion spring 93. When water is inside the infusion tube 8, the high-pressure fluid will first impact the movable plate 92. The movable plate 92 flips under the action of water pressure, the torsion spring 93 is compressed, the impact force of the fluid is reduced, and the fluid enters the Coriolis flow meter 1 and the viscosity adjustment component 2 through the two branch pipes of the infusion tube 8 respectively.

[0020] Example 2: Please refer to Figures 5-9 , Figure 12This invention relates to a device for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter. The difference from Embodiment 1 is that the magnetic drive assembly 3 includes a rotating cylinder 31, which is rotatably connected to the outer wall of a mounting housing 21. Several external magnetic plates 32 are equidistantly fixedly installed on the inner wall of the rotating cylinder 31. Specifically, the magnetic poles of several adjacent external magnetic plates 32 face opposite directions. The mounting housing 21 is made of stainless steel, and a rotating groove 211 is formed on its outer wall. The external magnetic plates 32 are all located inside the rotating groove 211. A first bearing 33 and a second bearing 34 are respectively sandwiched between the front and rear ends of the rotating cylinder 31 and the outer wall of the mounting housing 21. The first bearing 33 and the second bearing 34 can reduce the friction between the rotating cylinder 31 and the mounting housing 21, reduce wear, and extend the service life of the device. Two retaining rings are welded and fixed to the outer wall of the mounting housing 21. Two blocking rings limit the rotation of the rotating cylinder 31. A gear ring 35 is coaxially fixed to the outer wall of the rotating cylinder 31. A drive gear 36 is rotatably connected to the outer wall of the mounting shell 21. A brushless motor 37 is coaxially fixed to the shaft of the drive gear 36. A transmission belt 38 is connected to the outer wall of the drive gear 36 and the gear ring 35. Specifically, the model of the brushless motor 37 is DT42BL50-230. A set of mounting arms 212 is welded to the outer wall of the mounting shell 21. The drive gear 36 is rotatably mounted at the end of the mounting arm 212. The brushless motor 37 is fixed to the outer wall of the mounting arm 212 by bolts. The brushless motor 37 drives the drive gear 36 to rotate. The drive gear 36 drives the gear ring 35 to rotate synchronously with the rotating cylinder 31 through the transmission belt 38. The rotating cylinder 31 drives several external magnetic plates 32 to rotate synchronously.

[0021] Please see Figure 5 , Figure 8 , Figure 9 , Figure 12 The rotating assembly 4 includes a rotating disk 41. A rotating rod 411 is fixedly installed at the center of the rear end face of the rotating disk 41. The rotating rod 411 is rotatably connected inside the mounting shell 21. Specifically, a rotating frame 213 is welded and fixed to the inner wall of the mounting shell 21 near the rear end. A third bearing 42 is sandwiched between the outer wall of the end of the rotating rod 411 away from the rotating disk 41 and the inner wall of the rotating frame 213. The third bearing 42 can reduce the friction between the rotating rod 411 and the rotating frame 213, reduce wear, and extend the service life of the device. The front end of the rotating disk 41... A connecting cylinder 412 is fixedly installed at the center of the surface. A rifle tube 43 is coaxially fixedly installed on the outer wall of the connecting cylinder 412. Specifically, a number of protrusions are provided at equal intervals around the outer circumference of the connecting cylinder 412. A number of sliding grooves are provided on the inner wall of the rifle tube 43. The inner wall size of the sliding groove is adapted to the outer wall size of the protrusions. The protrusions have a limiting and guiding effect on the sliding groove, so that the rifle tube 43 can rotate synchronously with the connecting cylinder 412. A blocking ring is installed at the front end of the connecting cylinder 412. The blocking ring has a limiting effect on the rifle tube 43 and prevents the rifle tube 43 from slipping off the outer wall of the connecting cylinder 412.

[0022] Please see Figure 5 , Figure 9 The shearing assembly 5 includes a mounting cylinder 51. Mounting rings 511 are coaxially welded and fixed to the front and rear ends of the mounting cylinder 51. Several support frames 52 are equidistantly mounted on the outer walls of the two mounting rings 511. Specifically, the support frames 52 are made of stainless steel. Several insertion slots are equidistantly formed on the outer walls of the two mounting rings 511. Two insertion rods of the support frames 52 are slidably inserted into the two insertion slots. An elastic membrane 53 is fixedly mounted on the outer wall of the mounting cylinder 51. The outer walls of the support frames 52 are fixedly connected to the inner wall of the elastic membrane 53. The mounting cylinder 51 is made of aluminum alloy. The elastic membrane 53 and the outer wall of the mounting cylinder 51 form a sealed cavity. The sealed cavity is filled with expanding oil. The expanding oil is mineral-based expanding oil with an expansion coefficient of 0.0007 to 0.0011 / ℃. The working range is from room temperature to 150℃. The elastic membrane 53 is made of silicone rubber film with a thickness of about 0.5 to 1.0 mm. The silicone rubber film has good elasticity, corrosion resistance, and pressure resistance, and can be used for a long time at temperatures below 200℃. The outer walls of several support frames 52 are all bonded to the inner walls of the elastic membrane 53 with adhesive.

[0023] Example 3: Please refer to Figures 5-12 This is a device for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter. The difference from Embodiment 1 is that the heating assembly 6 includes a rifle sleeve 61, which is slidably fitted onto the outer wall of the rifle tube 43. For details, please refer to [link to specific examples]. Figure 8 , Figure 10The bolt lines on the outer wall of the bolt tube 43 slide and engage with the bolt grooves on the inner wall of the bolt sleeve 61. The bolt sleeve 61 can make a spiral linear movement on the outer wall of the bolt tube 43. Several limiting rods 611 are welded and fixed at equal intervals on the circumference of the rear end face of the bolt sleeve 61. Several sliding grooves 413 are opened at equal intervals on the circumference of the front end face of the rotating disk 41. Several limiting rods 611 are slidably inserted into several sliding grooves 413 respectively. The ends of several limiting rods 611 away from the bolt sleeve 61 are welded and fixed with blocking blocks. When the bolt sleeve 61 makes a spiral linear movement on the outer wall of the bolt tube 43, several limiting rods 611 slide in several sliding grooves 413 respectively until several blocking blocks abut against the rear end face of the rotating disk 41. The blocking blocks exert a force on the bolt sleeve 61. The limiting function prevents the rifle sleeve 61 from slipping off the outer wall of the rifle tube 43. A heating cylinder 62 is coaxially fixedly installed on the outer wall of the rifle sleeve 61. The outer wall size of the heating cylinder 62 is adapted to the inner wall size of the mounting cylinder 51. The mounting cylinder 51 is slidably sleeved on the outer wall of the heating cylinder 62. An electric heating wire 63 is fixedly installed inside the heating cylinder 62. Specifically, the heating cylinder 62 is made of copper, which has good thermal conductivity. The electric heating wire 63 heats the heating cylinder 62, and the heating cylinder 62 conducts the heat to the outside. A turbine 65 is coaxially fixedly installed on the front end face of the rifle sleeve 61. Specifically, a connecting bracket 64 is coaxially welded and fixed on the front end face of the rifle sleeve 61. The end of the connecting bracket 64 away from the rifle sleeve 61 is coaxially fixedly connected to the turbine 65 by bolts.

[0024] Please see Figures 5-12 The magnetic induction assembly 7 includes an induction cylinder 71. The rear end face of the induction cylinder 71 is coaxially and fixedly connected to the front end face of the mounting cylinder 51. Several inner magnetic sheets 72 are equidistantly installed on the outer circumference of the outer wall of the induction cylinder 71. A ceramic ring 73 is sleeved on the outer wall of the several inner magnetic sheets 72. Specifically, the magnetic poles of several adjacent inner magnetic sheets 72 are opposite. The number of inner magnetic sheets 72 is equal to the number of outer magnetic sheets 32. The ceramic ring 73 is used to prevent the several ceramic rings 73 from causing turbulence to the fluid inside the mounting shell 21. The width of the induction cylinder 71 is equal to the width of the rotating cylinder 31. The position of the induction cylinder 71 inside the mounting shell 21 corresponds to the position of the rotating cylinder 31. The induction cylinder 71 and the rotating cylinder 31 are separated by a layer of the cylinder wall of the mounting shell 21. When the rotating cylinder 31 drives the several outer magnetic sheets 32 to rotate synchronously, the several outer magnetic sheets 32 and the several inner magnetic sheets 72 on the outer wall of the induction cylinder 71 form magnetic coupling. The rotating cylinder 31 drives the induction cylinder 71 to rotate synchronously through magnetic coupling. The induction cylinder 71 can drive the mounting cylinder 51 to rotate synchronously. When the Coriolis flow meter 1 needs to detect the effect of fluid viscosity on measurement accuracy, the brushless motor 37 is started to rotate forward, driving the induction cylinder 71, mounting cylinder 51, rotating disk 41, and rifle tube 43 to rotate synchronously in sequence. The turbine 65 is connected to the rifle sleeve 61 through the connecting bracket 64. When the brushless motor 37 suddenly starts rotating forward, the torsional force of the brushless motor 37 is transmitted to the rifle sleeve 61 through the rifle tube 43. However, the fluid resistance encountered by the turbine 65 causes the rifle sleeve 61 to fail to rotate synchronously with the rifle tube 43. The torque on the rifle sleeve 61 is converted into forward linear motion. The rifle sleeve 61 drives the heating cylinder 62 to make forward linear motion on the outer wall of the rifle tube 43. The limiting rod 611 slides in the sliding groove 413 until the blocking block abuts against the rear end face of the rotating disk 41. The outer wall of the heating cylinder 62 slides out of contact with the inner wall of the mounting cylinder 51 and moves to the front of the mounting cylinder 51. At this time, the motor 37 is stopped and the heating wire 63 is started. The heating cylinder 62 heats the fluid, reducing the viscosity. The experimental results are obtained by comparing the data of the two Coriolis flow meters 1. When further reduction of fluid viscosity is required, the brushless motor 37 is started in reverse, driving the raffle tube 43 to rotate in the opposite direction. The raffle sleeve 61 moves backward under the action of fluid resistance until it abuts against the front end face of the rotating disk 41. The heating cylinder 62 is in contact with the inner wall of the mounting cylinder 51. The motor 37 continues to rotate and the heating wire 63 is started. The heating cylinder 62 transfers heat to the mounting cylinder 51. The internal expansion oil expands due to heat, pushing the elastic membrane 53 outward. Under the guidance of the support frame 52, it maintains a ring structure and rotates with the mounting cylinder 51, forming a shear disturbance field to achieve further viscosity reduction. The effect of viscosity change on measurement accuracy is obtained by comparing with the flow meter 1.

[0025] The working principle of this invention is as follows: During use, this device achieves comparative measurement by setting two Coriolis flow meters 1. One Coriolis flow meter 1 serves as a reference channel, while the other Coriolis flow meter 1 is connected to the viscosity adjustment component 2 to simulate the flow state of the fluid under different viscosity conditions in order to evaluate the impact of viscosity changes on measurement accuracy. Specifically, the fluid is first introduced into the device through the infusion pipe 8. The infusion pipe 8 is equipped with an anti-impact device 9, whose movable plate 92 can resist high-pressure instantaneous impact under the action of torsion spring 93, preventing damage to the Coriolis flow meter 1. In the viscosity adjustment component 2, the magnetic drive component 3 drives the active gear 36 to rotate through the brushless motor 37, and then drives the external gear ring 35 to rotate synchronously with the rotating cylinder 31 through the transmission belt 38. Several external magnetic plates 32 on the rotating cylinder 31 are magnetically coupled with the internal magnetic plates 72 in the magnetic induction component 7 inside the mounting shell 21 to form a non-contact synchronous drive mechanism, thereby driving the induction cylinder 71 and its coaxially connected mounting cylinder 51 to rotate. The mounting cylinder 51 drives the internal rotating component 4 to rotate synchronously. The front end of the rotating component 4 drives the rifling tube 43 to rotate through the connecting cylinder 412. When the Coriolis flowmeter 1 needs to detect the effect of fluid viscosity on measurement accuracy, the brushless motor 37 is started to rotate forward. The sensing cylinder 71 drives the mounting cylinder 51 to rotate synchronously. The mounting cylinder 51 drives the rotating disk 41 to rotate synchronously. The rotating disk 41 drives the rifle tube 43 to rotate synchronously. At this time, the rifle sleeve 61 wants to rotate synchronously with the rifle tube 43, but the turbine 65 is resisted by the fluid. This allows the rifle sleeve 61 to move linearly forward on the outer wall of the rifle tube 43. Several limit rods 611 slide in several sliding grooves 413 until several blocking blocks. The blocking block abuts against the rear end face of the rotating disk 41, and limits the movement of the rifle sleeve 61 to prevent it from slipping off the outer wall of the rifle tube 43. The outer wall of the heating cylinder 62 completely separates from the inner wall of the mounting cylinder 51 and comes to the front of the mounting cylinder 51. At this time, the brushless motor 37 stops working and the heating wire 63 is started. The heating wire 63 heats the heating cylinder 62, and the heating cylinder 62 transfers heat to the fluid. The fluid viscosity decreases due to heating. By comparing the data of the two Coriolis flow meters 1, experimental data on the effect of temperature on fluid viscosity are obtained. When the Coriolis flow meter 1 needs to further reduce the fluid viscosity, the brushless motor 37 is started in reverse. The sensing cylinder 71 drives the mounting cylinder 51 to rotate synchronously, which in turn drives the rotating disk 41 to rotate synchronously. The rotating disk 41 drives the rifle tube 43 to rotate synchronously. At this time, the rifle sleeve 61 wants to rotate synchronously with the rifle tube 43, but the turbine 65 is resisted by the fluid. This allows the rifle sleeve 61 to move linearly backward on the outer wall of the rifle tube 43. Several limit rods 611 slide in several sliding grooves 413 until the rear end face of the rifle sleeve 61 abuts against the front end face of the rotating disk 41, and the outer wall of the heating cylinder 62 is in complete contact with the inner wall of the mounting cylinder 51. At this time, the brushless motor... Machine 37 continues to work, starting the heating wire 63, which heats the heating cylinder 62. The heating cylinder 62 transfers heat to the mounting cylinder 51. The expansion oil inside the mounting cylinder 51 absorbs heat and expands, pushing the elastic membrane 53 to extend. During this process, several support frames 52 support the elastic membrane 53. The support frames 52 slide inside the insertion slot to ensure that the outer wall of the elastic membrane 53 is annular. The mounting cylinder 51 continues to drive the elastic membrane 53 to rotate, forming a shear disturbance field. The fluid is disturbed by the shear disturbance field, resulting in a decrease in viscosity. By comparing the data of the two Coriolis flow meters 1, experimental data on the effect of the shear disturbance field on the fluid viscosity are obtained. Under the aforementioned adjustment, the fluid passes through the Coriolis flowmeter 1 with a change in viscosity, and the data measured by the Coriolis flowmeter 1 with the untreated fluid is compared and analyzed to quantify the influence of fluid viscosity on the flowmeter measurement accuracy. This method has good experimental controllability and data repeatability. Thus, the operation of this device is completed.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An apparatus for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter, comprising two Coriolis flowmeters (1), characterized in that: One of the Coriolis flow meters (1) is coaxially fixedly connected to a viscosity adjustment component (2). The viscosity adjustment component (2) includes a mounting shell (21). The mounting shell (21) is coaxially fixedly connected to the Coriolis flow meter (1). A magnetic drive component (3) is installed on the outer wall of the mounting shell (21). A rotating component (4) is rotatably connected inside the mounting shell (21). A shearing component (5) is coaxially fixedly connected to the front end of the rotating component (4). A heating component (6) is slidably connected inside the shearing component (5). A magnetic induction component (7) is coaxially fixedly installed on the front end face of the shearing component (5). A delivery tube (8) is connected to the front end face of the mounting shell (21) and the front end face of the other Coriolis flow meter (1). The magnetic drive assembly (3) includes a rotating cylinder (31), and a plurality of outer magnetic plates (32) are fixedly installed equidistantly on the inner wall of the rotating cylinder (31). The rotating assembly (4) includes a rotating disk (41), and a connecting cylinder (412) is fixedly installed at the center of the front end face of the rotating disk (41). A rifle tube (43) is coaxially fixedly installed on the outer wall of the connecting cylinder (412). The heating assembly (6) includes a rifle sleeve (61), and the rifle sleeve (61) is slidably sleeved on the outer wall of the rifle tube (43). The shearing assembly (5) includes an mounting cylinder (51). A heating cylinder (62) is coaxially fixedly installed on the outer wall of the rifle sleeve (61). The outer wall size of the heating cylinder (62) is adapted to the inner wall size of the mounting cylinder (51). An electric heating wire (63) is fixedly installed inside the heating cylinder (62). A turbine (65) is coaxially fixedly installed on the front end face of the rifle sleeve (61). The magnetic induction assembly (7) includes an induction cylinder (71), the rear end face of the induction cylinder (71) and the front end face of the mounting cylinder (51) are coaxially and fixedly connected. The magnetic poles of several adjacent outer magnetic sheets (32) are oriented in opposite directions. The outer wall of the mounting shell (21) is provided with a rotating groove (211), and several outer magnetic sheets (32) are located inside the rotating groove (211). The outer wall of the connecting cylinder (412) is provided with several convex strips at equal intervals, and the inner wall of the raffle tube (43) is provided with several sliding grooves. The inner wall size of the sliding groove is adapted to the outer wall size of the convex strips. A blocking ring is installed at the front end of the connecting cylinder (412). The blocking ring has a limiting effect on the raffle tube (43) to prevent the raffle tube (43) from slipping off the outer wall of the connecting cylinder (412).

2. The apparatus for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter according to claim 1, characterized in that: The rotating cylinder (31) is rotatably connected to the outer wall of the mounting shell (21).

3. The apparatus for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter according to claim 2, characterized in that: A gear ring (35) is coaxially fixedly installed on the outer wall of the rotating cylinder (31), and a drive gear (36) is rotatably connected to the outer wall of the mounting shell (21). A brushless motor (37) is coaxially fixedly installed on the shaft of the drive gear (36), and a transmission belt (38) is sleeved on the outer wall of the drive gear (36) and the gear ring (35).

4. The apparatus for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter according to claim 1, characterized in that: A rotating rod (411) is fixedly installed at the center of the rear end face of the rotating disk (41), and the rotating rod (411) is rotatably connected inside the mounting shell (21).

5. The apparatus for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter according to claim 1, characterized in that: The front and rear ends of the mounting cylinder (51) are coaxially welded and fixed with mounting rings (511), and several support frames (52) are installed equidistantly on the outer circumference of the two mounting rings (511).

6. The apparatus for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter according to claim 5, characterized in that: An elastic membrane (53) is fixedly installed on the outer wall of the mounting cylinder (51), and the outer walls of several supporting frames (52) are fixedly connected to the inner wall of the elastic membrane (53).

7. The apparatus for testing the effect of fluid viscosity on the accuracy of a Coriolis flowmeter according to claim 1, characterized in that: The outer wall of the induction cylinder (71) is equidistantly fitted with several inner magnetic sheets (72), and the outer walls of the several inner magnetic sheets (72) are all fitted with a ceramic ring (73).

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