A flow measuring device and system for a high polymer fluid

Abstract

The utility model discloses a kind of flow measuring device and system of high polymer fluid, device includes: liquid storage module, measuring module and cleaning module;Liquid storage module is communicated with measuring module, measuring module is communicated with cleaning module, cleaning module is communicated with liquid storage module;Measuring module includes volumetric tube and grating ruler;Temperature sensor, pressure sensor and flowmeter are equipped in volumetric tube;Volumetric tube is valveless volumetric tube, the reading head of grating ruler is fixedly connected with piston in volumetric tube.The utility model embodiment can satisfy the accurate measurement demand of high polymer fluid.

Description

Technical Field

[0001] This utility model relates to the field of flow measurement technology for polymeric substances, and in particular to a flow measurement device and system for polymeric substances. Background Technology

[0002] In industrial process control, the flow detection of polymers such as lubricating grease, paint, coatings, and crude oil requires high-precision measurement.

[0003] However, its fluid characteristics (easy to adhere to walls, scale, and temperature sensitivity) pose challenges to traditional flow measurement devices: wall adhesion reduces the effective flow area and affects the flow state; scale can change the internal structure of the measuring device, interfere with fluid flow, and may block the pipe; temperature sensitivity causes the fluid viscosity and density to change with temperature, affecting the accuracy of the measurement.

[0004] Existing valved volumetric pipes suffer from problems such as low measurement accuracy, poor stability, and high uncertainty due to the easy accumulation of deposits and scale on the valves and the lack of consideration for high-viscosity fluids and temperature changes. They are difficult to meet the precise metering requirements of high-polymer fluids. Utility Model Content

[0005] This invention provides a flow measurement device and system for polymeric substances, which can meet the precise measurement requirements of polymeric substances.

[0006] In a first aspect, this utility model provides a flow measurement device for a polymeric substance, comprising: a liquid storage module, a measurement module, and a cleaning module; the liquid storage module is connected to the measurement module, the measurement module is connected to the cleaning module, and the cleaning module is connected to the liquid storage module;

[0007] The measurement module includes a volume tube and a grating ruler; the volume tube is equipped with a temperature sensor, a pressure sensor and a flow meter; the volume tube is a valveless volume tube, and the reading head of the grating ruler is fixedly connected to the piston inside the volume tube.

[0008] Optionally, the liquid storage module includes a first liquid storage tank, a second liquid storage tank, a container, and a commutator; a commutator is provided on the channel connecting the first liquid storage tank, the second liquid storage tank, and the container; the measuring module also includes an electronic scale; the container is placed on the electronic scale and is located upstream of the volume tube.

[0009] Optionally, the commutator adopts a double-edged design with the cutting edge forming an acute angle.

[0010] Optionally, the measurement module may further include a flaw detection sensor;

[0011] The flaw detection sensor is placed in the volume tube at a 90° angle to the grating ruler.

[0012] Optionally, the flaw detection sensor is a quantum flaw detection sensor with NV color centers;

[0013] The flaw detection sensor integrates a quantum sensor probe, a precision scanning and positioning unit, and a control and data processing unit.

[0014] Optionally, the volume tube is made of seamless precision steel tubing of 316L stainless steel, the piston is made of 316L stainless steel, and the sealing ring of the volume tube is made of plastic.

[0015] Optionally, the grating ruler is an absolute grating ruler, and the support of the grating ruler is parallel to the volume tube.

[0016] Optionally, the cleaning module includes: a solvent unit, a delivery unit, and a control unit;

[0017] The solvent unit includes a storage tank, and the delivery unit includes a magnetic gear pump.

[0018] Optional features also include: control cabinets and mobile terminals;

[0019] The control cabinet is electrically connected to the liquid storage module, the measurement module, and the measurement module.

[0020] The mobile terminal is communicatively connected to the control cabinet.

[0021] Secondly, this utility model embodiment also provides a flow measurement system for polymeric substances, including the flow measurement device for polymeric substances described in the first aspect and a test table;

[0022] The test table is positioned in the channel between the downstream of the volume tube and the cleaning module.

[0023] This utility model discloses a flow measurement device and system for polymeric substances. The device includes a liquid storage module, a measurement module, and a cleaning module. The liquid storage module is connected to the measurement module, the measurement module is connected to the cleaning module, and the cleaning module is connected to the liquid storage module. The measurement module includes a volume tube and a grating ruler. The volume tube contains a temperature sensor, a pressure sensor, and a flow meter. The volume tube is a valveless volume tube, and the reading head of the grating ruler is fixedly connected to a piston inside the volume tube. Using a valveless volume tube to measure the flow rate of polymeric substances ensures the stability and uncertainty of the device, providing accurate measurements. The volume tube contains a temperature sensor, a pressure sensor, and a flow meter. By measuring the position of the grating ruler during the piston's movement from the initial position to the final position, the cumulative pulses of the flow meter, and the temperature and pressure of the polymeric substance, the compensated standard volume of the volume tube can be determined, improving measurement accuracy while providing precise measurements. This utility model can meet the precise metering requirements of polymeric substances.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a flow measurement device for polymeric substances provided in an embodiment of this utility model;

[0027] Figure 2 This is a schematic diagram of another flow measurement device for polymeric substances provided in this embodiment of the present invention. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Figure 1 This is a schematic diagram of the structure of a flow measurement device for polymeric substances provided in an embodiment of this utility model. (Refer to...) Figure 1The device includes: a liquid storage module 110, a measurement module 120, and a cleaning module 130; the liquid storage module 110 is connected to the measurement module 120, the measurement module 120 is connected to the cleaning module 130, and the cleaning module 130 is connected to the liquid storage module 110; the measurement module 120 includes a volume tube 121 and a grating ruler 122; the volume tube 121 is equipped with a temperature sensor, a pressure sensor, and a flow meter; the volume tube 121 is a valveless volume tube, and the reading head of the grating ruler 122 is fixedly connected to the piston inside the volume tube 121.

[0031] It should be noted that the volumetric tube 121 is mainly used for accurately measuring the volumetric flow rate of fluids, and is commonly used in experiments such as flow calibration and viscosity measurement of polymer melts or solutions. A piston moves precisely within the tube, pushing fluid through a cavity of known volume. The piston's movement is typically controlled by a high-precision drive device, and its position is monitored by a sensor. The piston's movement, combined with time, can be used to calculate the fluid flow rate. The valveless volumetric tube eliminates the complex and fault-prone four-way switching valve. The four-way valve requires frequent operation, and its internal seals are prone to wear and jamming, making it the primary failure point of traditional volumetric tubes. The valveless volumetric tube simplifies the equipment structure, reduces moving parts, and significantly lowers maintenance requirements and downtime, making it particularly suitable for online calibration applications requiring long-term stable operation. It achieves comprehensive improvements in reliability, accuracy, automation level, and operating and maintenance costs. The application of the grating ruler 122 in the volumetric tube 121 primarily utilizes its high-precision displacement measurement capability to accurately monitor the piston's position change within the volumetric tube 121, thereby achieving precise measurement and control of the fluid's volumetric flow rate. The pulse count of a flow meter is a digital signal output when measuring fluid flow. Essentially, it represents the cumulative count triggered by the fluid passing through the flow meter and is directly related to the fluid's volume or mass. Polymers are highly sensitive to temperature and pressure; therefore, temperature and pressure sensors are installed on the volume tube to monitor the fluid state in real time and correct the measurement results.

[0032] This embodiment of the invention utilizes a valveless volumetric tube to measure the flow rate of polymeric substances, ensuring the stability and uncertainty of the device and providing accurate measurements. The volumetric tube 121 is equipped with a temperature sensor, a pressure sensor, and a flow meter. By measuring the position of the grating ruler 122 during the piston's movement from the initial to the final position, the accumulated pulses of the flow meter, and the temperature and pressure of the polymeric substance, the compensated standard volume of the volumetric tube 121 can be determined, improving measurement accuracy while providing precise measurements. This embodiment of the invention can meet the precise metering requirements of polymeric substances.

[0033] Figure 2This is a schematic diagram of another flow measurement device for polymeric substances provided in this embodiment of the present invention. Optionally, based on the above embodiment, the liquid storage module 110 includes a first liquid storage tank 111, a second liquid storage tank 112, a container 113, and a commutator 114; the commutator 114 is provided on the channel connecting the first liquid storage tank 111, the second liquid storage tank 112, and the container 113; the measurement module 120 also includes an electronic scale 123; the container 113 is placed on the electronic scale 123, and the container 113 is located upstream of the volume tube 121.

[0034] It should be noted that the electronic scale 123 can measure the mass of the polymer fluid, thereby determining the mass flow rate of the polymer fluid based on its mass. The compensated volumetric flow rate of the polymer fluid can be calibrated based on its mass flow rate, and the grating ruler 122 can periodically calibrate the flow measurement results of the polymer fluid, further improving the accuracy of the measurement results.

[0035] Optionally, based on the above embodiments, the commutator 114 adopts a double-edged design with the cutting edge forming an acute angle.

[0036] Specifically, in this embodiment of the invention, a drive unit can be used to start the commutator 114 at high speed using a servo, and a high-flow valve and a fast exhaust valve can be used to ensure that the commutator's action time is less than 50ms, enabling ultra-high-speed commutation. The commutator 114 can be made of high-strength, lightweight carbon fiber composite material; the commutator 114 adopts a double-edged design, and the cutting edge is precision ground and polished to form a sharp angle, ensuring that the commutator 114 is cleaned and cut without stringing or dripping. A high-frequency PID controller and a high-precision position sensor can be used to control the motion and manage the precise trajectory of the commutator 114, giving the commutator 114 a high repeatability of ±1ms.

[0037] Optionally, based on the above embodiments, the measurement module 120 further includes a flaw detection sensor 124; the flaw detection sensor 124 is placed in the volume tube 121 and is at a 90° angle to the grating ruler 122.

[0038] Optionally, based on the above embodiments, the flaw detection sensor 124 is an NV color center quantum flaw detection sensor; the flaw detection sensor 124 integrates a quantum sensor probe, a precision scanning and positioning unit, and a control and data processing unit.

[0039] Understandably, the flaw detection sensor 124 can monitor the wear condition of the inner wall of the volume tube 121. Specifically, a precision scanning and positioning unit can be used to control the quantum sensor probe to scan inside the volume tube, and the signals collected during the scanning process can be transmitted to the control and data processing unit. The control and data processing unit performs data processing and image reconstruction to generate a 3D inner wall morphology image.

[0040] Optionally, based on the above embodiments, the volume tube 121 is made of seamless precision steel tube of 316L stainless steel, the piston is made of 316L stainless steel, and the sealing ring of the volume tube 121 is made of plastic.

[0041] Specifically, the volume tube 121 is the standard source of the polymer flow measurement device. The inner wall of the volume tube 121 can be made of mirror polished, oiled high-hardness wear-resistant material. The volume tube can be made of seamless precision steel tube of 316L stainless steel. The piston can be made of 316L stainless steel. The sealing ring can be made of wear-resistant and chemically inert high-performance engineering plastic.

[0042] Optionally, based on the above embodiments, the grating ruler 122 is an absolute grating ruler 122, and the support of the grating ruler 122 is parallel to the volume tube 121.

[0043] Optionally, based on the above embodiments, the cleaning module 130 includes: a solvent unit, a conveying unit, and a control unit; the solvent unit includes a storage tank, and the conveying unit includes a magnetic gear pump.

[0044] It should be noted that tees or quick-connect interfaces are specially designed on the upstream and downstream pipes of volume tube 121 for connecting the cleaning module 130. After cleaning, the cleaning waste is discharged and purged: first, high-purity nitrogen is used to press the residual polymer in the main process pipeline back to the production line or discharge it into the waste tank.

[0045] Specifically, the solvent unit can be a 316L stainless steel electropolished storage tank, heated by a jacket and equipped with stirring. The delivery unit can be a magnetic gear pump, driven by a frequency converter.

[0046] Optionally, based on the above embodiments, the flow measurement device for polymeric substances further includes: a control cabinet and a mobile terminal (not shown in the figures); the control cabinet is electrically connected to the liquid storage module 110, the measurement module 120, and the measurement module 120; the mobile terminal is communicatively connected to the control cabinet.

[0047] Optional, continue to refer to Figure 2 The liquid storage module 110 also includes a third liquid storage tank 115, which is located downstream of the cleaning module 130 and in the channel connecting the first liquid storage tank 111.

[0048] In summary, this embodiment of the invention utilizes a valveless volumetric tube to measure the flow rate of polymeric substances, ensuring the stability and uncertainty of the device and providing accurate measurements. The volumetric tube 121 is equipped with a temperature sensor, a pressure sensor, and a flow meter. By measuring the position of the grating ruler 122 during the movement of the piston from its initial to its final position, the cumulative pulses of the flow meter, and the temperature and pressure of the polymeric substance, the compensated standard volume of the volumetric tube 121 can be determined, improving measurement accuracy while providing precise measurements. This embodiment of the invention can meet the precise metering requirements of polymeric substances. Furthermore, the electronic scale 123 can measure the mass of the polymeric substance, thereby determining the mass flow rate of the polymeric substance based on its mass. The compensated volumetric flow rate of the polymeric substance can be calibrated based on its mass flow rate, allowing for periodic calibration of the flow measurement results of the grating ruler 122, further improving the accuracy of the measurement results. A drive unit is used to start the commutator 114 at high speed using a servo motor. A high-flow valve and a fast exhaust valve are utilized to ensure the commutator 121's action time is less than 50ms, enabling ultra-high-speed commutation. The commutator 114 can be made of high-strength, lightweight carbon fiber composite material. The commutator 114 employs a double-edged design, with the cutting edges precision ground and polished to form sharp angles, ensuring a clean, tear-free, and drip-free cutting process. A high-frequency PID controller and a high-precision position sensor are used for motion control and precise trajectory management of the commutator 114, resulting in a high repeatability of ±1ms.

[0049] This utility model embodiment also provides a flow measurement system for polymeric substances, which can be further referenced. Figure 2 The system includes the flow measurement device for the polymer stream provided in the above embodiment and the test gauge 140. The test gauge 140 is disposed in the channel between the downstream of the volume tube 121 and the cleaning module 130.

[0050] The flow measurement system for polymeric substances provided in this embodiment includes the flow measurement device for polymeric substances provided in the above embodiment, and therefore has the same beneficial effects. For content not described in detail in this embodiment, please refer to the flow measurement device for polymeric substances provided in the above embodiment.

[0051] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A flow measurement device for a polymeric substance, characterized in that, include: The system includes a liquid storage module, a measurement module, and a cleaning module; the liquid storage module is connected to the measurement module, the measurement module is connected to the cleaning module, and the cleaning module is connected to the liquid storage module. The measurement module includes a volume tube and a grating ruler; the volume tube is equipped with a temperature sensor, a pressure sensor and a flow meter; the volume tube is a valveless volume tube, and the reading head of the grating ruler is fixedly connected to the piston inside the volume tube.

2. The flow measurement device for polymeric substances according to claim 1, characterized in that, The liquid storage module includes a first liquid storage tank, a second liquid storage tank, a container, and a commutator; a commutator is provided on the channel connecting the first liquid storage tank, the second liquid storage tank, and the container; the measuring module also includes an electronic scale; the container is placed on the electronic scale and is located upstream of the volume tube.

3. The flow measurement device for polymeric substances according to claim 2, characterized in that, The commutator adopts a double-edged design with the cutting edge forming an acute angle.

4. The flow measurement device for polymeric substances according to claim 1, characterized in that, The measurement module also includes a flaw detection sensor; The flaw detection sensor is placed in the volume tube at a 90° angle to the grating ruler.

5. The flow measurement device for polymeric substances according to claim 4, characterized in that, The flaw detection sensor is an NV color center quantum flaw detection sensor; The flaw detection sensor integrates a quantum sensor probe, a precision scanning and positioning unit, and a control and data processing unit.

6. The flow measurement device for polymeric substances according to claim 1, characterized in that, The volume tube is made of seamless precision steel tubing of 316L stainless steel, the piston is made of 316L stainless steel, and the sealing ring of the volume tube is made of plastic.

7. The flow measurement device for polymeric substances according to claim 1, characterized in that, The grating ruler is an absolute grating ruler, and the support of the grating ruler is parallel to the volume tube.

8. The flow measurement device for polymeric substances according to claim 1, characterized in that, The cleaning module includes: a solvent unit, a delivery unit, and a control unit; The solvent unit includes a storage tank, and the delivery unit includes a magnetic gear pump.

9. The flow measurement device for polymeric substances according to claim 1, characterized in that, Also includes: Control cabinets and mobile terminals; The control cabinet is electrically connected to the liquid storage module, the measurement module, and the measurement module. The mobile terminal is communicatively connected to the control cabinet.

10. A flow measurement system for a polymeric substance, characterized in that, Includes the flow measurement device for polymeric substances as described in any one of claims 1-9 and the meter under test; The test table is positioned in the channel between the downstream of the volume tube and the cleaning module.

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