17 results about "Medium viscosity" patented technology

The invention relates to the technical field of mechanical equipment fault diagnosis, and discloses a fault diagnosis method and system for an automatic tensioning control valve of a scraper conveyor. The method comprises the following steps: acquiring pressure and flow data of a main flow channel and an auxiliary flow channel through a sensor array, and extracting frequency domain characteristics to obtain a standardized frequency spectrum; detecting parameter coupling abnormity based on the spectrum cross correlation coefficient and generating an abnormal index; environment interference and medium viscosity data are fused, and non-linear feature distribution and correction deviation representing the mechanical state are obtained through classification and filtering analysis; matching the correction deviation with a preset fault mode, determining a fault type, and generating a fault positioning coordinate in a three-dimensional space by using an optimization algorithm; and finally, performing fluid dynamic simulation through the high-fidelity virtual model to verify the coordinate stability, and outputting accurate early warning when conditions are met. Through cooperation of multi-source information fusion and an intelligent algorithm, the accuracy of early-stage internal fault diagnosis of the complex double-flow-channel valve is improved.

The invention relates to the technical field of data models and modeling, in particular to an intelligent well data model which comprises a data acquisition module and a data analysis module. The data acquisition module is used for acquiring formation pressure, saturation pressure, oil reservoir porosity, oil reservoir permeability, bottom hole flowing pressure, formation pressure, temperature, flow, concentration, odor, vibration, oil drainage area, cleaning frequency of a pipeline and medium viscosity in the pipeline of the low-pressure local production well; according to the method, for a low-pressure and low-yield well, the gas reservoir energy supplement capacity, the well bottom natural gas release period change rule and the system return pressure reduction condition are analyzed through a data model, and according to different pressures, yields and pipeline distances of the gas well, the most economical equipment configuration and the optimal production system of the supercharging device are determined; therefore, the pressurized natural gas can enter a gathering and transportation pipe network.

The invention discloses a viscosity real-time regulation and control system and method of an energy-saving working medium for a water ring vacuum pump, and belongs to the technical field of energy conservation of water ring vacuum pumps. The system comprises a solution tank, a clean water tank, a solution pump, a clean water pump, an electric valve I, an electric valve III, an electromagnetic flowmeter I, an electromagnetic flowmeter II, an electromagnetic flowmeter III, a screw conveyor and the water ring vacuum pump; the solution tank is connected with a liquid inlet of the water ring vacuum pump through the solution pump, the electromagnetic flowmeter I, the electric valve I and the electromagnetic flowmeter II in sequence; the clean water tank is connected with a liquid inlet of the water ring vacuum pump sequentially through a clean water pump, an electric valve III, an electromagnetic flowmeter III and a spiral conveyor, according to the system and the method provided by the invention, the viscosity and the liquid level are correspondingly adjusted by quantitatively comparing the viscosity and the liquid level, so that the system is maintained at the optimal viscosity, and the operation efficiency of the system is improved.

The application discloses a kerosene product processing equipment fault prediction and intelligent operation and maintenance system and method, relates to the technical field of petroleum chemical process monitoring and fault prediction, and comprises a multi-modal causal perception layer which is configured to collect physical parameters of multiple key nodes in a poor-quality residual oil heat exchange process in real time, wherein the physical parameters at least include inlet temperature, outlet temperature, wall surface temperature, pipe pressure drop, flow distribution ratio of each parallel branch, medium density, medium viscosity, ultrasonic echo attenuation spectrum and near-infrared spectrum characteristics. The application can accurately distinguish whether the cooling operation is caused by flow state conversion to accelerate coking and output a forced turbulent flow maintenance instruction, retain the cooling benefit while avoiding the mass transfer enhancement side effect; can identify a branch imbalance type coking and output a branch equalization cleaning instruction to reverse the vicious cycle of the more blocked, the more flow; and can capture asphaltene thermal shock nucleation signals under vapor-liquid two-phase flow and output a two-phase flow suppression instruction to eliminate the thermal shock side effect.

The application relates to the technical field of mechanical equipment fault diagnosis, and discloses a fault diagnosis method and system of an automatic tension control valve of a scraper conveyor; the method comprises the following steps: collecting pressure and flow data of a main flow channel and an auxiliary flow channel through a sensor array, extracting frequency domain features to obtain a standardized frequency spectrum; detecting parameter coupling abnormalities and generating abnormal indexes based on a frequency spectrum cross-correlation coefficient; fusing environmental interference and medium viscosity data, obtaining nonlinear feature distribution and correction deviation representing mechanical states through classification and filtering analysis; matching the correction deviation with a preset fault mode, determining a fault type, and generating fault positioning coordinates in a three-dimensional space by using an optimization algorithm; finally, verifying the stability of the coordinates through fluid dynamics simulation of a high-fidelity virtual model, and outputting a precise early warning when the conditions are met; the application improves the accuracy of early internal fault diagnosis of a complex double-flow valve through multi-source information fusion and intelligent algorithm cooperation.

The application discloses a kind of based on water-based two-phase flow and abrasive flow composite polishing method, comprising: using water-based two-phase flow to the micro inner channel structure is polished, obtain from original roughness polishing to 1.6 μm~5.6 μm range in specific roughness critical value and corresponding critical polishing time, and according to critical polishing time determines water-based two-phase flow actual polishing time;According to the aspect ratio, the abrasive grain size of abrasive flow required in the abrasive flow polishing process, the abrasive flow medium viscosity and the abrasive flow medium pressure are determined;Using abrasive flow medium to the micro inner channel structure after polishing by water-based two-phase flow is polished, according to the relationship between the discharge weight of abrasive flow medium used and the roughness of micro inner channel structure, the required abrasive flow polishing time is obtained;Using other micro inner channel structures in the same batch to carry out batch polishing.The composite polishing method of the application can well control the small turning channel deformation in micro inner channel structure.

The utility model discloses a high-precision servo liquid level meter which comprises a shell, a servo motor, a measuring wheel, a measuring cable and a floater and further comprises a main encoder and an auxiliary encoder which are coaxially arranged, the main encoder is in rigid connection with an output shaft of the servo motor, and the auxiliary encoder is in transmission connection with the measuring wheel through a magnetic coupling. The signal output ends of the main encoder and the auxiliary encoder are connected with a difference compensation controller. According to the utility model, the main encoder, the auxiliary encoder and the laser-assisted positioning module are arranged, so that the measurement precision is improved; the electromagnetic compatibility is improved by arranging a three-layer composite shielding structure, and conducted interference is blocked through transmission of the magnetic coupling coupler; the spiral layer realizes temperature self-compensation; due to the combined design of the floater, the flow guide fins and the micro-grooves, the applicable medium viscosity is expanded; the transmission of the magnetic coupling coupler reduces mechanical wear, and the elastic tension adjusting mechanism automatically maintains the tension of the cable without manual maintenance; and a self-diagnosis algorithm is built in the difference compensation controller, so that the fault early warning accuracy is improved.

The invention discloses a high-crack-resistance and high-fatigue-resistance waterproof structure, belongs to the technical field of building waterproofing, and overcomes the defects that an existing single waterproof coating is poor in crack resistance and fatigue resistance when a stress failure effect is generated due to dynamic change of base layer cracks. A permeable emulsion layer, polyester cloth, an emulsion coating layer and a waterproof coating layer are sequentially arranged on the outer surface of a cement base layer. And the emulsion coating layer is formed by brushing pure acrylic emulsion with small particle size, medium viscosity and high water resistance. And the waterproof coating layer is formed by brushing polymer cement waterproof coating. The waterproof structure is provided with a plurality of waterproof layers, has high crack resistance and high fatigue resistance when stress damage is generated due to dynamic change of cracks of a cement base layer, and is mainly used for building waterproofing.

This invention discloses an intelligent monitoring method for the operating status of a safety valve based on wireless communication, belonging to the field of mechanical condition detection. This method includes the following steps: capturing friction signals generated by residual process media in the safety valve core in real time using an acoustic emission sensor, while simultaneously collecting millimeter-level displacement changes of the safety valve stem and dynamic valve inlet pressure; generating data every N seconds. Compared with existing technologies, the advantages of this invention are: by collecting the operating data of the safety valve, this invention specifically analyzes the friction signals generated by residual process media (such as syrup / fermentation broth). The data packet transmission strategy is primarily event-triggered, supplemented by timed reporting, ensuring that when the safety valve operates abnormally, the risk can be assessed promptly using a medium viscosity-sticking risk model, and analysis results can be obtained, without the need for periodic safety valve inspections that affect production efficiency, as required by existing technologies.

The invention relates to the technical field of biology, in particular to a novel phenylboronic acid modified chitosan microcarrier, a preparation method and application, and the phenylboronic acid modified chitosan microcarrier is obtained by mixing 4-formyl phenylboronic acid and medium-viscosity chitosan with gelatin and crosslinking. The particle size of the microcarrier is about 100 [mu] m, and scanning electron microscope analysis shows that the microcarrier shows a clear spherical porous form, has uniform pore shape and uniform pore size, and can provide a three-dimensional environment for cell growth. The prepared porous material has moderate hardness, elasticity and pore wall, is more beneficial to growth of more cells and transmission of nutrient substances, has higher stability, is more suitable for cell culture, shows excellent biological safety and biocompatibility, and is more suitable for a 3D cell culture system.

The invention belongs to the technical field of geophysical exploration seismic forward modeling, and discloses a method and a device for constructing and solving a viscous wave equation of an anisotropic medium, and the method comprises the steps: 1, constructing a pure acoustic wave equation in the anisotropic medium, and solving the pure acoustic wave equation of the anisotropic medium; step 2, based on a Kelvin-Voigt model, constructing a viscous acoustic wave equation in an isotropic medium; and combining the viscous acoustic wave equation in the isotropic medium with the pure acoustic wave equation in the anisotropic medium to obtain a viscous pure acoustic wave equation in the anisotropic medium. A numerical example shows that the obtained viscous pure acoustic wave equation in the anisotropic medium can effectively eliminate interference and generate high-precision P-wave response; meanwhile, the influence of the anisotropic attenuation medium on seismic wave kinematics and dynamics can be fully displayed, and an efficient and accurate wave field extrapolation tool is provided for subsequent anisotropic attenuation medium migration imaging and waveform inversion.

This utility model discloses a vibration protection device for a truck starting battery, relating to the field of automotive battery technology. It includes a battery box, with a mounting base fixedly installed at the bottom of the battery box. A connecting frame is fixedly connected to the bottom of the mounting base. A reset component for providing reverse reset force is provided at the bottom of the connecting frame. Multiple connecting boxes are fixedly installed at the bottom of the connecting frame, and friction components for consuming vibration energy and reducing amplitude are provided at the bottom of each connecting box. This utility model, through the adoption of a detachable wear-prone component design and a non-medium-dependent structure, allows for quick replacement of the metal plate and extrusion block in the friction component after wear, avoiding the high cost of overall replacement. The reset component is independent of the internal medium, avoiding performance degradation caused by changes in medium viscosity. Simultaneously, the distributed energy consumption of multiple components reduces the load on individual components, significantly reducing replacement frequency and vehicle maintenance costs, thus providing long-term protection for battery safety and normal vehicle operation.

The invention relates to the technical field of packaging materials, in particular to paper emulsion for replacing a PE (polyethylene) spraying film as well as a preparation method and application of the paper emulsion. According to the paper emulsion for replacing the PE spraying film, the modified natural bio-based material, the soft monomer, the hard monomer and the functional monomer are selected to be matched, the emulsifier and the functional polymerization cross-linking agent are applied, and the prepared paper emulsion has the advantages of no formaldehyde, extremely low VOC, high solid content, medium viscosity and degradability, has low film forming temperature after being coated, and can be used for preparing the paper emulsion for replacing the PE spraying film. After being cured into a film, the adhesive has the characteristics of better water whitening resistance, good temperature resistance, environmental protection, no toxicity, no pollution, strong initial adhesion, high bonding strength, stable performance after bonding, hydrophobicity, transparency, excellent adherence contact with polar materials and non-polar materials, high coating speed and the like, and can be widely applied to the fields of packaging, encapsulation and fast food packaging of daily necessities.

The invention discloses an intelligent electromagnetic three-way valve control method for a wind power generation double-circulation cooling system, relates to the technical field of wind power generation equipment regulation and control, and can solve the problems that the control precision of an intelligent electromagnetic three-way valve is reduced and an actuator oscillates due to the physical property change of a circulation working medium in a wide-temperature-range extreme environment. Comprising the following steps: acquiring outboard environment temperature data, cycle working medium temperature data and cycle working medium viscosity data of the fan generator set; according to the outboard environment temperature data and the cycle working medium viscosity data, the change intensity index of the viscosity along with the temperature is determined, and a plurality of different operation conditions are divided according to the change intensity index; determining the optimal target temperature and the viscosity change smoothness coefficient of the cycle fluid under each operation condition; and according to the optimal target temperature and the viscosity change smooth coefficient of the cycle working medium, dynamically correcting the target temperature set value of the cycle working medium, and performing closed-loop control on the intelligent electromagnetic three-way valve according to the temperature data of the cycle working medium.

The invention discloses a shear-resistant, high-drag-reducing, medium-viscosity slickwater drag reducing agent and a preparation method therefor. The drag reducing agent is polymerized from acrylamide, a sulfonate ion-containing hydrophobic monomer, a hydrophobic unit microblock regulator, a molecular weight modifier, and a composite initiator. Through the special sulfonate ion-containing hydrophobic monomer, the hydrophobic unit microblock regulator matched with a hydrophobic monomer and the control of a polymer molecular weight, the solubility and viscosity-increasing performances of the polymer can be significantly improved, the shear-resistant and degradation-resistant performance of the drag reducing agent is improved, with excellent sand carrying performance and drag reducing performance, and the shortcomings of existing drag reducing agents such as weak shear resistance, rapid decline in drag reduction rate and poor sand carrying performance are overcome, thereby meeting the special requirements of deep / ultra-deep oil and gas reservoir fracturing on fracturing fluid rheology and “high drag reduction of wellbore.

The application discloses a reactor combined early warning system and early warning method, comprising a temperature acquisition unit, a pressure acquisition unit, a data processing unit, an early warning unit, a pressure relief execution unit and a working condition monitoring auxiliary unit; the application has the beneficial effects that: the temperature acquisition unit adopts three high-temperature-resistant sensors distributed in the upper, middle and lower regions of the reactor, combined with a 1-10 Hz acquisition frequency and a ±0.1 DEG C acquisition accuracy, to realize comprehensive coverage and accurate capture of the internal temperature field of the reactor; the pressure acquisition unit adopts two symmetrically arranged high-precision pressure transmitters to synchronously acquire static pressure Pstatic and dynamic pressure Pdynamic; the working condition monitoring auxiliary unit supplements the acquisition of auxiliary parameters such as feed flow Q, reaction medium viscosity mu and stirring speed n, to provide multi-dimensional data support for subsequent parameter calibration and working condition adaptation, and solve the one-sidedness of early warning judgment caused by the insufficient data dimension of the prior art which only relies on a single temperature and pressure parameter.