Multifunctional integrated test module of rotational rheometer

Abstract

The invention discloses a multifunctional integrated test module of a rotational rheometer, which comprises a test module and a fixed plate, the test module is divided into a carrying platform part and a test part, the test part comprises a miniature pore water pressure gauge, a micro seismograph and an acoustic emission instrument, and the carrying platform part comprises a carrying platform part upper part and a carrying platform part lower part. The upper part of the carrying platform part is positioned above the lower part of the carrying platform part, and the micro seismograph is positioned outside the upper part of the carrying platform part and is higher than the upper part of the carrying platform part. According to the multifunctional integrated test module of the rotational rheometer, the platform deck main body and the micro seismograph are connected and fixed through the fixing plate, and the micro pore water pressure gauge and the acoustic emission instrument are fixed through the reserved space and the threads; synchronous measurement of a rheological test and a seismic signal, a pore water pressure signal and an acoustic emission signal is realized through the integrated measurement assembly, and the synchronism, the expansibility and the reliability of the measurement system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rotary rheometer, in particular to a multifunctional integrated test module of rotary rheometer. BACKGROUND

[0002] Rheology is the science of the flow and deformation of matter, mainly focusing on the flow of liquids and the deformation of solids. Its research objects cover a wide range of fluids, such as air, water, blood, crude oil, toothpaste, cement mortar, sludge, polymer solution and paint, etc., and are applied in many fields such as petroleum industry, medical devices, chemical industry and food processing. In addition, rheology is also increasingly valued in the field of earth science, and the research objects include dam-break flood, debris flow, landslide, volcanic debris flow and submarine mass flow, etc., involving the rapid diffusion of natural mixtures of particulate matter and water (dense suspensions in nature) on various complex terrains and strata with various sedimentary substrates, and the unpredictability caused by complex flow behavior is the root of its great harm.

[0003] Rheological properties are very important for fluids, such as the working efficiency of automobile engine lubricating fluid, the transportation of pipeline crude oil, the grouting in construction and the adhesion ability of paint. There are various methods for testing the rheological behavior of different types of fluids, including capillary viscometer for pure viscous fluids, extensional rheometer for high viscosity polymers, efficient and reliable rotary rheometer, slump cone test commonly used for cement mortar, and simple operation of falling ball method and rolling ball method. Among them, the rotary rheometer realizes wide material applicability by replacing the measurement system, and selecting coaxial cylinder system, paddle system, parallel plate system, cone plate system and double gap system, covering low / high viscosity fluids, melts, gels, suspensions and soft solids.

[0004] With the continuous progress of modern testing methods and characterization methods, the collaborative testing capability of rheometer has been significantly expanded, and the development and application of various accessories enable the microstructure evolution of materials under complex stress conditions to be characterized more accurately and diversely. The introduction of optical microscopy, confocal microscopy, small-angle laser scattering, dielectric rheology and Raman spectroscopy modules realizes the observation of structures from micrometer to nanometer scale, and can correlate the crystallization, crosslinking, electrical properties and other physicochemical behaviors under shear field, deepening the understanding of the structure-property relationship of materials.

[0005] However, the existing technical means still mainly focus on the characterization of micro-morphology and chemical structure, and the detection of the physical behavior and dynamic process of fluid in porous media such as rock-soil is obviously insufficient. At present, there is still a lack of integrated modules that can simultaneously monitor key physical parameters such as pore water pressure, micro-fracture events and particle vibration behavior, resulting in limitations in understanding the rheological mechanism of complex systems such as rock fluid. In addition, if external sensors are used in rheological testing, it often causes problems such as asynchronous measurement of multiple devices, difficulty in aligning data in space and time, and the external probe easily interferes with the flow field, damages the integrity of the sample, and affects the reliability of the experimental results.

[0006] Therefore, we developed a multifunctional integrated test module to expand the characterization dimension of the rotary rheometer. The scheme aims to realize the synchronous and in-situ measurement of macro-rheological parameters and micro-physical behavior, and avoid the dependence on external sensors through built-in and integrated design, so as to capture the multi-physical field parameters such as pore pressure and micro-fracture signals with high spatio-temporal resolution on the basis of maintaining the integrity of the sample and the stability of the flow field, and provide key technical support for in-depth revealing the rheological mechanism of complex systems such as rock-soil fluid. SUMMARY

[0007] The purpose of the present application is to provide a multifunctional integrated test module for a rotary rheometer, which integrates micro-pore water pressure gauges, micro-seismographs, acoustic emission instruments and other sensors in the test module, realizes synchronous measurement of multiple test methods, and is suitable for various rotary rheometers and various stages, including parallel plate stages, coaxial cylinder stages, double gap stages, etc.

[0008] The present application provides a multifunctional integrated test module for a rotary rheometer, which includes a test module and a fixed plate. The test module is divided into a stage part and a test part. The test part includes micro-pore water pressure gauges, micro-seismographs and acoustic emission instruments. The stage part includes an upper stage part and a lower stage part. The upper stage part is located above the lower stage part 12. The micro-seismograph is located outside the upper stage part. The micro-seismograph 3 is higher than the upper stage part.

[0009] Preferably, the lower stage part is provided with a through hole, and the lower stage part is connected and fixed with the upper stage part through two connecting bolts.

[0010] Preferably, the upper stage part is connected and fixed with the micro-seismograph through the fixed plate.

[0011] Preferably, the upper stage part includes micro-pore water pressure gauges, acoustic emission instruments and rough surfaces. The upper surface of the upper stage part is a rough surface.

[0012] Preferably, the roughness of the rough surface can be adjusted according to the number of surface protrusions, from very rough to smooth.

[0013] Preferably, one side of the fixed plate is arc-shaped, the other side of the fixed plate is flat, the arc-shaped side of the fixed plate is connected to the upper part of the carrier part, and the flat side of the fixed plate is connected to the microseismograph.

[0014] Preferably, a through hole is arranged at the center of the upper part of the carrier part, and a thread is arranged in the through hole, the micro-pore water pressure gauge is externally threaded, and the micro-pore water pressure gauge and the rough surface are flush.

[0015] Preferably, the acoustic emission instrument is arranged in the upper part of the carrier part, and a spring is arranged below the acoustic emission instrument.

[0016] Therefore, the multifunctional integrated test module of the rotary rheometer is used to integrate the micro-pore water pressure gauge, the acoustic emission instrument and the microseismograph in the carrier part to form a test module, and synchronous measurement of rheological parameters, pore water pressure, micro-fracture events and particle vibration behavior is realized.

[0017] The technical solutions of the present application will be further described in detail below through examples. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 FIG. 1 is a schematic diagram of the embodiment of the multifunctional integrated test module of the rotary rheometer of the present application; Fig. 2 FIG. 2 is a schematic diagram of the internal structure of the upper part of the carrier part of the embodiment of the multifunctional integrated test module of the rotary rheometer of the present application; Fig. 3 FIG. 3 is a schematic diagram of the internal structure of the lower part of the carrier part of the embodiment of the multifunctional integrated test module of the rotary rheometer of the present application.

[0019] REFERENCE NUMERALS 1, carrier part; 2, fixed plate; 3, microseismograph; 4, connecting bolt; 11, upper part of carrier part; 12, lower part of carrier part; 101, micro-pore water pressure gauge; 102, acoustic emission instrument; 103, rough surface of carrier part. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be further described in detail below through examples.

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present application shall have the usual meanings understood by those skilled in the art to which the present application belongs.

[0022] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Example 1 like Figs. 1-3 As shown, this invention discloses a multifunctional integrated testing module for a rotating rheometer, comprising a testing module, a mounting plate 2, and a microseismometer 3. The testing module is divided into a stage portion 1 and a testing section. The testing section includes a micro pore water pressure gauge 101, a microseismometer, and an acoustic emission instrument 102. The stage portion 1 includes an upper stage portion 11 and a lower stage portion 12, with the upper stage portion 11 positioned above the lower stage portion 12. The stage portion 1 has a thickness of 6 cm, ensuring both the stability of the testing module and its portability. The mounting plate 2, the upper stage portion 11, and the lower stage portion 12 are all made of stainless steel.

[0024] When conducting sample testing, the sample is located directly above the upper part 11 of the stage section 1, in the center. A commonly used sample size is 2mm × [missing information]. The sample height is adjustable, with a 20mm diameter. The lower part 12 of the stage provides stable support for the upper part 11, ensuring the stability of the entire device. The lower part 12 of the stage connects to a temperature control component for rapid temperature adjustment.

[0025] The lower part 12 of the platform section has through holes. To ensure a secure connection with the upper part 11 of the platform section, the lower part 12 is connected and fixed to the upper part 11 by two connecting bolts 4. The lower part 12 and the upper part 11 of the platform section can achieve a tight and detachable connection. The connecting bolts 4 are fasteners, with their heads and screws passing through the corresponding through holes of the lower part 12 and the upper part 11 of the platform section, respectively, and are tightened by screwing on nuts to achieve a secure connection.

[0026] The microseism instrument 3 is located outside the upper part 11 of the carrier part, and the microseism instrument 3 is higher than the upper part 11 of the carrier part, so that the vibration signal can be more effectively received and recorded. The upper part 11 of the carrier part is connected and fixed by the fixed plate 2, which not only ensures the stability of the microseism instrument 3, but also facilitates maintenance and replacement of the microseism instrument 3. The microseism instrument 3 receives the vibration signal. The fixed plate 2 not only plays a connecting role, but also ensures that the microseism instrument 3 will not move or shake due to external interference when receiving the vibration signal, thereby improving the accuracy of monitoring.

[0027] The upper part 11 of the carrier part includes a micro-pore water pressure gauge 101, an acoustic emission instrument 102 and a rough surface 103. The upper surface of the upper part 11 of the carrier part is the rough surface 103, and the roughness of the rough surface 103 can be adjusted according to the number of surface protrusions, from very rough to smooth.

[0028] One side of the fixed plate 2 is arc-shaped, and the other side of the fixed plate 2 is planar, so that the fixed plate 2 can be adapted and stably connected to components of different shapes. The arc-shaped side of the fixed plate 2 is connected to the upper part 11 of the carrier part, which helps to better fit the shape of the upper part 11 of the carrier part, ensuring the tightness and stability of the connection. The planar side of the fixed plate 2 is connected to the microseism instrument 3, and the planar design facilitates contact with the flat surface of the microseism instrument 3.

[0029] The micro-pore water pressure gauge 101 requires contact with the measured sample during measurement. A through hole is provided in the center of the upper part 11 of the carrier part and is internally threaded. The size of the through hole is 5mm, and the size of the through hole is adapted to the size of the micro-pore water pressure gauge 101. The micro-pore water pressure gauge 101 is externally threaded at the end, and the micro-pore water pressure gauge 101 is fixed after being screwed into the through hole, ensuring its stability. The micro-pore water pressure gauge 101 and the rough surface 103 are flush. This ensures that the measurement end surface of the micro-pore water pressure gauge 101 can be in close contact with the measured sample, thereby meeting the measurement requirements. After the micro-pore water pressure gauge 101 is installed, it is consistent with the test plane, meeting the contact requirements with the sample.

[0030] One side of the through hole is provided with a cylindrical cavity to reserve space for the acoustic emission instrument 102. The size of the cylindrical cavity is 2cm x 3cm, to ensure that the acoustic emission instrument 102 can be stably placed in the cylindrical cavity, the cylindrical cavity is provided with the acoustic emission instrument 102, and the acoustic emission instrument 102 is located in the inside of the upper part 11 of the carrier part, which not only protects the acoustic emission instrument 102, but also facilitates accurate measurement of the acoustic emission instrument 102. The acoustic emission instrument 102 receives the transient elastic wave generated by the rapid release of energy during the friction process of the sample, and the signal is transmitted through the elastic wave, without the need for direct contact with the sample. The non-contact measurement method not only simplifies the experimental steps, but also improves the accuracy and reliability of the measurement. The acoustic emission instrument 102 is provided with a spring below, to ensure close contact and avoid wave refraction caused by gaps.

[0031] Therefore, the multifunctional integrated test module of the rotary rheometer is used to integrate the miniature pore water pressure gauge, the acoustic emission instrument and the microseismic instrument to form a test module in the carrier part, to realize synchronous measurement of rheological parameters, pore water pressure, micro-fracture events and particle vibration behavior, to be compatible with various rotary rheometer platforms, and to be expanded to coaxial cylinder, paddle, cone plate, double gap and other measurement systems by adjusting the arrangement and connection mode of components.

[0032] The above embodiments are only used to illustrate the technical solutions of the present application but not to limit it, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A multifunctional integrated testing module for a rotational rheometer, characterized in that, It includes a test module and a mounting plate. The test module is divided into a platform part and a test part. The test part includes a micro pore water pressure gauge, a micro seismometer and an acoustic emission instrument. The platform part includes an upper platform part and a lower platform part. The upper platform part is located above the lower platform part 12. The micro seismometer is located outside the upper platform part. The micro seismometer 3 is higher than the upper platform part.

2. The multifunctional integrated testing module for a rotating rheometer according to claim 1, characterized in that, The lower part of the platform has a through hole, and the lower part of the platform is connected and fixed to the upper part of the platform by two connecting bolts.

3. The multifunctional integrated testing module for a rotating rheometer according to claim 1, characterized in that, The microseismograph is connected and fixed to the upper part of the platform by a fixing plate.

4. The multifunctional integrated testing module for a rotating rheometer according to claim 1, characterized in that, The upper part of the stage includes a micro pore water pressure gauge, an acoustic emission instrument, and a rough surface. The upper surface of the upper part of the stage is a rough surface, and the roughness of the rough surface can be adjusted according to the number of surface protrusions, from very rough to smooth.

5. The multifunctional integrated testing module for a rotating rheometer according to claim 1, characterized in that, One side of the fixing plate is curved, and the other side is flat. The curved side of the fixing plate is connected to the upper part of the platform, and the flat side of the fixing plate is connected to the microseismometer.

6. The multifunctional integrated testing module for a rotating rheometer according to claim 1, characterized in that, A through hole with an internal thread is opened in the center of the upper part of the platform, and the end of the micro pore water pressure gauge is externally threaded. The micro pore water pressure gauge is flush with the rough surface.

7. The multifunctional integrated testing module for a rotating rheometer according to claim 1, characterized in that, The acoustic emission device is located inside the upper part of the stage, and a spring is installed below the acoustic emission device.

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