162 results about "Liquid viscosity" patented technology

The invention relates to the technical field of filling automation control, in particular to a full-automatic essential balm filling control system based on PLC online monitoring, which comprises a filling parameter real-time acquisition module, a dynamic coupling analysis module, a multi-axis cooperative execution module, a foreign matter real-time detection module, an interlocking control module and a filling quality feedback module. Wherein the filling parameter real-time acquisition module is used for acquiring temperature data of a filling head, a liquid viscosity value and the flow velocity of a filling pipeline in real time; and the dynamic coupling analysis module is used for establishing a correlation model of the temperature gradient and the viscosity change rate and generating a dynamic compensation parameter set. According to the method, the nonlinear correlation model of the temperature and the viscosity change rate is constructed, and the dynamic compensation parameter set is generated, so that self-adaptive precise control in the filling process and automatic response linkage of abnormal working conditions are realized, and the stability and the intelligent level of a filling system are remarkably improved.

The invention discloses a deep learning and automatic control chemical reactor and a resource recovery method, and relates to the technical field of hydrometallurgy, and the deep learning and automatic control chemical reactor comprises a chemical reactor, a motor, a heating device, a monitoring device, a data center and a PLC control system. Based on a PLC control system, a Transform-LSTM time sequence prediction model is integrated, so that real-time monitoring of parameters such as mixed liquid temperature, reaction chamber pressure, mixed liquid viscosity, conductivity and the like in a wet leaching reaction process can be realized; and the heating power of the heating device, the rotating speed of the motor, the raw material adding amount of the feeding port, the mixed material discharging time of the discharging port and the air displacement of the air exhaust port can be automatically and accurately controlled. The problems that stirring efficiency is low, parameter regulation and control are lagged, and manual experience is relied on are solved, through a predictive control strategy, the real-time monitoring and dynamic regulation level is remarkably improved, the wet leaching process is optimized, energy consumption is reduced, the high-grade metal leaching efficiency is improved, and the method is suitable for various wet metallurgy processes.

The invention discloses a liquid viscosity detection device, and particularly relates to the field of viscosity detection.The liquid viscosity detection device comprises a base, a control box and a bathtub are arranged on the base, the bathtub is used for containing constant-temperature bath liquid, a cylinder cover covers the bathtub, an opening is formed in the cylinder cover, and a capillary tube clamp is arranged at the opening; the capillary tube clamp is used for clamping the capillary tube viscometer, the capillary tube viscometer extends into the bathtub, a heating assembly and a stirrer are mounted on the cylinder cover, the heating assembly is used for heating constant-temperature bath liquid, and the stirrer is used for stirring the constant-temperature bath liquid. The capillary viscometer extends into the bathtub, the constant-temperature bath liquid is heated by the heating assembly, and the stirrer is used for stirring to uniformly distribute heat, so that the temperature of the to-be-detected liquid in the capillary viscometer can be kept constant, and the viscosity of the to-be-detected liquid under a certain temperature condition can be detected; and the influence of environment temperature change is avoided.

The invention discloses a preparation method of high-viscosity cationic starch, which belongs to the technical field of modified starch, and comprises the following steps: crosslinking epichlorohydrin, ball-milling and cationizing; the epoxy chloropropane crosslinking comprises the following steps: mixing starch, calcium hydroxide and deionized water, stirring at 40-50 DEG C, adding sodium stearoyl lactylate, stirring at 50-55 DEG C, naturally cooling to room temperature, adding sodium chloride and epoxy chloropropane, stirring, dropwise adding a potassium hydroxide aqueous solution, stirring, adjusting the pH value to 6, filtering, taking filter residues, washing and drying to obtain crosslinked starch; in the step of ball milling, calcium hydroxide, sucrose fatty acid ester SE-11 and deionized water are mixed and then subjected to ball milling, and a ball-milled material is obtained; the prepared high-viscosity cationic starch is high in paste liquid viscosity and cationic substitution degree, good in paste liquid viscosity stability, uniform in substitution degree and paste liquid viscosity, high in reaction efficiency in cationization and low in alkali consumption.

The invention discloses a method for predicting fluid liquid phase viscosity based on a free volume theory, and relates to the technical field of fluid thermophysical property theoretical calculation, and the method comprises the following steps: step 1, obtaining material parameters related to a to-be-measured fluid, and establishing a corresponding free volume theoretical viscosity model; 2, improving the free volume theoretical viscosity model to obtain a correction model; and 3, fitting the correction model and the material parameters, and calculating the viscosity of the fluid to be measured. The method can effectively reduce the calculation deviation of the viscosity.

The invention relates to the technical field of control systems, in particular to a regulation and control method and system for a separation device, and the method comprises the steps: obtaining real-time monitoring data; determining a pressure abnormal quantity; determining an abnormal liquid inlet fluid area; determining the performance similarity of the inlet liquid false blocking pressure; determining the state of the filter membrane; when the state of the filter membrane is false blockage, the liquid inlet speed is adjusted, and the pressure abnormal quantity is adjusted; when the filter membrane is actually blocked, an alarm is triggered. According to the method, the pressure data of the liquid inlet end and the liquid outlet end of the filter membrane are collected in real time, and triple judgment logic of similarity of pressure abnormal quantity, abnormal liquid inlet fluid area and liquid inlet false blockage pressure expression is constructed, so that false blockage caused by liquid viscosity or concentration fluctuation and true filter membrane blockage can be accurately distinguished; and the misjudgment rate caused by traditional judgment only based on the pressure difference threshold value is remarkably reduced, unnecessary speed reduction or shutdown alarm is avoided, and continuous production is guaranteed.

Provided is a production method for a dispersion liquid capable of ensuring the film thickness of a low refractive index layer and achieving in-plane film thickness uniformity.　This production method is for a dispersion liquid in which particles are dispersed in a dispersion medium, the method being characterized in that: the particles are particles of a condensate of a material containing an alkoxy silane, that is, a condensate of a material containing a trifunctional organic silicon; a first pulverization step, a condensing step, and a second pulverization step are performed in the stated order; the first pulverization step is for pulverizing the particles in a liquid in which the particles are dispersed in the dispersion medium; the condensing step is for condensing the liquid; the second pulverization step is for further pulverizing the particles, in the liquid, pulverized in the first pulverization step; the viscosity of the liquid after the second pulverization step is greater than the viscosity of the liquid after the first pulverization step, or the concentration of the particles in the liquid after the second pulverization step is greater than the concentration of the particles in the liquid after the first pulverization step; and the density of the particles in the produced dispersion liquid is 3.5 wt% or more.

The invention discloses an electrical wire coating system with a wide glue solution viscosity range and a coating method thereof, and relates to the technical field of microsystems. A glue injection system; a glue injection system and a glue injection control module; and the scribbling motion system comprises a scribbling motion control module, an injection head motion displacement mechanism and a component motion displacement mechanism. According to the invention, the working modes are flexibly switched through the positive and inverted switching mechanism, the device adapts to the range from low viscosity to high viscosity, the positive mode assists conveying and coating of high-viscosity glue liquid by using pressure, and the inverted mode avoids dripping and line broadening of the low-viscosity glue liquid due to gravity; the defect that low-viscosity glue solution is infiltrated and widened due to the influence of gravity in a traditional forward mode is effectively overcome, meanwhile, the forward and reverse dual-system switching scheme can meet the requirements of different application scenes, and the problems that a traditional dual-independent system is long in switching time, single in application environment, repeated in system positioning and the like are solved.

A liquid ejection apparatus includes a nozzle, a pressure chamber, a piezoelectric element, a count processing portion, and a detection processing portion. The nozzle ejects a liquid. The pressure chamber communicates with the nozzle and contains the liquid. The piezoelectric element changes a pressure in the pressure chamber in response to an input of a drive signal. The count processing portion counts a number of times that an electric signal output from the piezoelectric element and corresponding to vibration generated in the pressure chamber in response to the input of the drive signal to the piezoelectric element exceeds a predetermined threshold value. The detection processing portion detects a viscosity of the liquid contained in the pressure chamber, based on a count result of the count processing portion.

The utility model relates to the technical field of oil path structures, and discloses an oil path structure of an open-close type oil viscosity analyzer, which comprises a shell and two runner plates rotationally connected through an open-close shaft, the outer sides of the two runner plates are respectively provided with an operation end cover, an electric heating sheet is arranged between the operation end cover and the corresponding runner plate, and the electric heating sheet is connected with the shell. An opening is formed in the top of the shell, and the two ends of the opening and closing shaft are detachably installed at the bottom of an inner cavity of the shell. According to the utility model, through the arranged opening and closing structure, oil can be quickly injected on the runner plate during use, meanwhile, the runner plate is limited and fixed through the shell, temperature control is realized by matching with the electric heating sheet, and compared with the prior art, the oil detection surface is always kept within a certain size through the mechanical clamping structure, so that the oil detection efficiency is improved. The oil detection precision and the consistency among different devices are improved, and the whole mechanism is easy to maintain and quick and convenient to operate.

The utility model relates to liquid viscosity detection technical field especially relates to a kinematic viscosity testing device, including sample cell subassembly and detection subassembly. Sample cell subassembly includes two detection inner boards, two detection inner boards articulate to have open state and closed state, under the closed state, two detection inner boards surround and form the capillary space along the vertical direction extension, and the liquid is in the capillary space and is in accord with capillary phenomenon when going down. Detection subassembly has the accommodation groove, and sample cell subassembly can insert or separate from the accommodation groove, and detection subassembly can detect the time difference of the liquid in the capillary space of sample cell subassembly in the accommodation groove when passing through different positions, and because the liquid is in accord with capillary phenomenon when going down, the distance between different positions and the time difference of the liquid passing through different positions can be measured to calculate the kinematic viscosity of the liquid. The kinematic viscosity testing device is simple to operate and can be carried. It is easy to clean after detection, and multiple detections can also ensure high operation efficiency.

The utility model discloses a homogenizing dispersion machine. The homogenizing dispersion machine comprises a base, a vertical bracket is arranged on one side of the base, a chuck is arranged at the upper end of the bracket, a support arm is arranged in the chuck, and one end of the support arm is connected with a dispersion host; the lower end of the dispersing main machine extends downwards to form a dispersing tool bit, and the dispersing tool bit extends into a container below the dispersing tool bit; a sealing cover is arranged at the upper end of the container, a vacuumizing pipe is connected to the sealing cover, and the other end of the vacuumizing pipe is connected with a vacuumizer. The container can be vacuumized by starting the vacuumizer to form a negative pressure or low pressure environment, so that the gas solubility of liquid is reduced, the viscosity of the liquid is reduced, and the stirring and homogenization of the liquid are facilitated.

The invention discloses an intelligent pressurization and decompression oil return control method and system for an air conditioner system, and relates to the technical field of air conditioner lubricating oil control. The method comprises the steps that grids are divided through oil pipe layout data, single-grid oil resistance is calculated, a resistance thermodynamic diagram is generated, and pressure partitions are dynamically adjusted; a valve distribution strategy is set according to the pressure partitions, valve circulation scores are obtained, and three valves with the highest valve circulation scores are selected as main oil return paths; setting an oil pressure dynamic adjusting algorithm, compensating oil pressure deviation by combining plateau pressure, and adjusting the rotating speed of a variable-frequency oil pump and the opening of an electric adjusting valve; and dynamically adjusting the subarea heating power of the trunk road according to the real-time irradiance and the pressure subarea. The method solves the problem that in the plateau or extreme low-temperature environment, the temperature fluctuates violently, and the oil viscosity rises, so that the decision of the oil return route of the air conditioner is wrong.

The invention relates to a specimen liquid extractor with a quantification function, and belongs to the technical field of medical instruments, the specimen liquid extractor comprises a main control module, a suction device, an anti-reflux protection device, a human-computer interaction interface and an extractor shell, the main control module comprises an MCU core controller, a lithium polymer battery and a miniature camera, and the lithium polymer battery supplies power to the MCU core controller and the micro camera. According to the sample liquid extractor, the problem that a traditional sample liquid extractor possibly loses efficacy due to the fact that liquid viscosity is too high or contains impurities when quantitative operation is conducted through a flow sensor is solved, image recognition is not affected by liquid physical characteristics by directly observing the liquid level height, and a better quantitative function is achieved; through image recognition, a probe or other quantitative sensors do not need to be inserted into liquid, the risk of cross contamination can be effectively avoided while automatic quantification is achieved, rapid quantitative and accurate extraction of the sample liquid can be effectively achieved, the risk of contamination in an operation is reduced, and the sterile requirement of an operating room is met.

The invention relates to a photoacoustic liquid viscosity detection device and method based on spectrum resolution, and belongs to the field of photoacoustic detection and liquid physical property analysis. The device comprises a solid-state laser, a collimating lens, a plane mirror, a plate-type semitransparent mirror, a microscope objective lens, a photodiode, a photoacoustic coupling cavity, a rectangular prism group, an ultrasonic transducer, a pre-signal amplifier, a digital oscilloscope and a computer. Pulse laser is focused to a liquid sample after being processed by an optical path to excite a photoacoustic effect, an ultrasonic transducer receives a signal and converts the signal into an electric signal, after a digital oscilloscope synchronously samples, a computer extracts a frequency spectrum full width at half maximum (FWHM) through fast Fourier transform, and non-contact detection is realized based on a negative correlation between the frequency spectrum full width at half maximum and viscosity. The method can overcome the defects of large sample size, mechanical contact and the like of a traditional method, and is suitable for high-precision viscosity detection of biological tissues and industrial samples in the field of biomedicine.

The application relates to a method for fracturing a fractured shale zone by using a pre-bridging body, and relates to the field of shale gas fracturing. The method comprises the following steps: establishing a shale fracture development degree judgment model, judging the natural fracture development degree of a target layer according to the shale fracture development degree judgment model; calculating different discharge wellhead pressure values according to well logging data interpretation and small pressure test data, and establishing a fractured shale zone body reconstruction construction pressure judgment standard; adopting a pre-bridging technology for construction in the early stage of fracturing implementation; and adjusting the discharge, liquid viscosity and in-joint bridging process parameters to realize reservoir reconstruction. The method for fracturing a fractured shale zone by using a pre-bridging body can help field engineers to judge the fracture development degree of a formation and evaluate whether fracturing reconstruction is effective, and on this basis, systematic pre-bridging technology and field construction control means are provided, so that the reconstruction effect of the fractured shale zone is effectively improved.

The invention discloses a semiconductor wafer CMP (chemical mechanical polishing) polishing machine capable of accurately spraying grinding liquid. The semiconductor wafer CMP polishing machine comprises a polishing machine shell horizontally placed on a working table. Through cooperation of the polishing assembly and the tool assembly, the semiconductor wafer can be conveniently, stably and efficiently polished, and the capability of polishing the semiconductor wafer is achieved; through the cooperation of a flow meter and a gear pump of the liquid conveying assembly, the output flow can be conveniently monitored, adjusted and controlled in real time, and the accurate manufacturability of the device is achieved; through a fluid mechanics and system efficiency model established by the grinding fluid regulation and control module, multiple factors such as gear pump volume efficiency, pipeline resistance, grinding fluid viscosity and temperature dependence are comprehensively considered, and accurate calculation and dynamic regulation of actual output quantity are achieved; the module not only can judge whether the supply is sufficient or not, but also can reversely deduce and adjust the ideal output quantity when the supply is insufficient, so that the supply accuracy of the grinding fluid and the process stability are remarkably improved, and the cost waste caused by excessive supply is reduced.

The invention discloses a liquid viscosity measuring method based on a phase-locked loop algorithm. Liquid flows in the guided wave resonance element, the excitation and receiving coil is arranged on the surface of the guided wave resonance element in an attached mode, a permanent magnet is arranged beside the excitation and receiving coil, the temperature control module is connected with the guided wave resonance element, and the current sampling resistor is connected with the excitation and receiving coil in series. Ultrasonic guided-wave vibration is generated in a guided-wave resonant element through an exciting coil, voltage and current response signals of the resonant element are synchronously acquired by using a dual-channel synchronous sampling module, an impedance real part of the resonant element is accurately extracted according to the response signals, and accurate measurement of the liquid viscosity is realized by combining an established impedance-viscosity relation model. According to the invention, not only are the limitations of complex equipment, high cost and high requirement on sample volume of the traditional viscosity measurement method overcome, but also the problems of poor measurement stability, complex device manufacturing and difficulty in realizing online real-time monitoring under the working condition of strong noise or high damping in the existing method are solved.

The invention discloses coating equipment and a coating method for an insulating coating of a ceramic aluminum foil tape, and the coating equipment comprises a first box body which is used for accommodating insulating paint liquid; the second box body is arranged above the first box body, a circulating pump is arranged in the first box body, and the circulating pump is used for pumping insulating paint liquid in the first box body into the second box body. Separable covering structures are introduced to the two sides of the ceramic aluminum foil tape, flow distribution of high-viscosity insulating paint in an edge area is effectively regulated and controlled on the premise that an original dip-coating process is not changed, the accumulation thickness of an edge coating is remarkably reduced, the overall coating uniformity is improved, and the service life of the ceramic aluminum foil tape is prolonged. According to the mode, the dependence of a traditional adjusting method on the viscosity or the production speed of the paint liquid is avoided, the adhesive force and the insulating property of the insulating paint are ensured, and relatively high production efficiency is maintained.

The invention relates to the technical field of college physics experiment devices, and discloses a liquid viscosity coefficient and surface tension coefficient measurement comprehensive experiment instrument, which comprises a test bed, a first square column container, a second square column container, a timing automatic release device, a force sensor, a metal circular ring, an industrial camera matched with a telecentric lens, a lifting platform and a host. According to the invention, two original experimental devices are combined into one, so that the cost is saved, and the laboratory space is also saved; by designing the timed automatic release device, manpower is saved, and errors caused by manual operation of an original experimental instrument can be reduced; and the instantaneous speed of the small ball on the falling path is measured by using a machine vision technology, so that the selection basis for selecting the constant-speed motion interval of the small ball can be explored.

The application belongs to the technical field of polymer synthesis, and particularly relates to a preparation method of a methacrylic acid polymer, which comprises the following steps: feeding polymerization monomers, a chain transfer agent and an initiator into a polymerization reactor, and performing a polymerization reaction in the polymerization reactor; the polymerization reaction temperature is 200-260 DEG C; the polymerization reactor is a loop reactor; there is no gas phase in the polymerization reactor; the flow rate of the reaction liquid in the polymerization reactor is 0.2-0.8 m / s; and the polymer concentration at the outlet of the polymerization reactor is 70-85 wt%. The loop reactor is used, a series of operation conditions are set, and a product with high polymerization conversion rate is obtained. By controlling the polymerization reaction temperature, the reaction liquid viscosity is effectively reduced, the occurrence probability of gel effect is reduced, the polymerization conversion rate is improved, and the polymer concentration at the outlet of the polymerization reactor is 70 wt%-85 wt%.

The application discloses an on-line glass liquid viscosity detection device for a bottle making machine. The bottle making machine comprises a mold and a gas snubbing head connected to the end of the mold. The viscosity detection device comprises a first detection member arranged at the bottom surface of the gas snubbing head. The gas snubbing head is adapted to fill a certain amount of gas into the inner cavity of the mold to form a positive pressure in the inner cavity of the mold. The first detection member is adapted to detect the pressure value in the inner cavity of the mold and determine the viscosity of the glass liquid according to the pressure value in the inner cavity of the mold after a threshold time. While the gas snubbing head snubs gas into the mold, the first detection member can detect the pressure value in the inner cavity of the mold. By judging the size of the detected pressure value after the threshold time, the viscosity of the glass liquid can be obtained. Compared with the prior art, the application combines the manufacturing process of glass bottles, realizes on-line viscosity detection of the glass liquid, and thus improves the production rate and quality of the bottle body.

The invention relates to the technical field of conveying and squeezing, in particular to a strip steel after-quenching squeezing control algorithm and conveying and squeezing equipment applying the algorithm, the algorithm comprises data acquisition and data processing, the data acquisition comprises five factors of strip steel running speed, environment humidity, environment temperature, squeezing roller use duration and water quenching liquid viscosity; performing data processing on the data acquired by the data acquisition, and during data processing, firstly performing filtering processing to remove noise and then performing multi-factor association normalization processing; according to the wringing control algorithm, under the condition that external influence factors change, unnecessary overlarge extrusion force is avoided, abrasion of the wringing roller and equipment is delayed, and the wringing conveying quality of the strip steel is improved under the condition that sufficient wringing is guaranteed through dynamic adjustment.

The utility model discloses reinforced closed type stainless steel stirring equipment, and particularly relates to the technical field of stirring equipment, the reinforced closed type stainless steel stirring equipment comprises a tank body, a driving assembly, a stirring assembly, a sealing assembly and an air exhaust assembly, the driving assembly is mounted on the upper end face of the tank body, and the air exhaust assembly is mounted at the edge of the upper end face of the tank body in a penetrating manner; a stirring assembly is arranged in an inner cavity of the tank body, a sealing assembly is arranged on the inner side of the tank body, the equipment can enable a stirring shaft and a rotating frame to rotate and stir in opposite directions through cooperation of a driving gear, a driven gear and a driven wheel ring, the integrity of a circulation loop when liquid rotates can be destroyed, and the stirring efficiency is improved. The liquid can not form a swirling phenomenon, the material fusion time is shortened, the space in the tank body can be pumped through the vacuum pump, the interior of the tank body tends to be in a vacuum state, and due to the fact that gas is reduced, the liquid viscosity is reduced, the material fluidity is enhanced, and the mixing efficiency can be remarkably improved.

The invention belongs to the technical field of cellulose resource utilization, and discloses pectic polysaccharide CSP-A2 with a remarkable enzyme protection function and application of the pectic polysaccharide CSP-A2 in increasing the yield of cellulase reducing sugar. Aiming at the problems of high production cost, reaction liquid viscosity increase, enzyme active site shielding and environmental risk caused by a chemical surfactant in a cellulose enzymolysis process, the pectic polysaccharide CSP-A2 with a remarkable enzyme protection function is prepared, and the enzyme activity of the pectic polysaccharide CSP-A2 is improved by enhancing the dispersity of enzyme molecules and promoting enzyme-substrate adsorption. The reducing sugar yield of the low-concentration cellulase under shear force and gas-liquid interface conditions is remarkably improved, and the enzymolysis efficiency is remarkably improved through the synergistic effect of the low-concentration cellulase and Tween20.

This invention discloses a method for the synergistic control and removal of organic matter in the hydrometallurgical process of zinc smelting, belonging to the field of hydrometallurgical technology. It includes the following steps: incorporating the TOC content of manganese ore powder and iron removal agent into quality monitoring and limiting content thresholds; controlling the addition amounts of flocculant, bone glue, and organic cobalt removal agent; and simultaneously adjusting the concentrations of zinc ions and soluble silicon in the supernatant to reduce liquid viscosity, thereby reducing the introduction of impurities at the source; adding activated carbon to the purification process to adsorb organic matter; and adding a waste liquid circulation filtration system to the electrolysis process, while selectively adding modified activated carbon to remove suspended solids, organic matter, colloids, and harmful impurity ions from the electrolytic waste liquid. This invention achieves three main benefits: first, it establishes a synergistic removal system for fine suspended solids, colloids, organic matter, and impurity ions; second, it increases the electrolysis current efficiency to over 90% and reduces cell voltage; and third, it improves the utilization efficiency of fresh liquid and reduces overall production costs.

The utility model relates to the technical field of liquid viscosity detection, in particular to an in-tank viscosity self-detection device which comprises a storage tank and the like, a second motor is installed at the upper end of the sealing cover, an opening and closing cover is installed at the position, close to the second motor, of the upper end of the sealing cover, a limiting strip is fixedly connected to the position, close to the second motor, of the lower end of the sealing cover, and the other end of the limiting strip is fixedly connected with the bottom end of the storage tank. A tension sensor is installed at the bottom end of the rack, and a lantern ring is installed on the tension sensor. The viscosity cup is driven by the rack to directly complete sampling in the tank, the whole process is isolated from the outside, air dust, hand contact of an operator, cleaning residues of a sampling device and other impurities are prevented from polluting a sample during manual operation, and it is ensured that a detection result truly reflects the actual viscosity characteristic of liquid in the tank.

The utility model discloses a continuous rotating electrostatic spinning device which comprises a base, a liquid storage tank arranged on the base, a spinning head arranged in the liquid storage tank and a high-voltage power source. The spinning head comprises a center shaft rotating in the liquid tank, an insulation sleeve arranged on the center shaft and a conductive wire spirally wound on the insulation sleeve, and openings are formed in the position, corresponding to the upper half portion of the conductive wire, of the upper end of the liquid storage tank at intervals. By arranging the quasi-closed feeding loop, volatilization of a solvent in the liquid storage tank in the spinning process is effectively restrained, the viscosity change of the feed liquid is avoided, and the stability of the spinning state is guaranteed.

The invention provides a continental facies shale interlayer bedding seam activation capability evaluation method and device and a medium, and belongs to the technical field of oil and gas reservoir development. The method comprises the following steps: establishing a continental facies shale three-dimensional cohesion unit method multi-cluster fracturing model, performing multi-factor simulation analysis by using the model to obtain fracturing crack propagation forms under different factors and activation conditions of a shale interlayer bedding interface, and drawing an interlayer bedding interface activation chart. According to the method, the three-dimensional cohesion unit method multi-cluster fracturing model is adopted to describe the three-dimensional multi-cluster fracturing fracture form of the continental facies shale, the fracture expansion form and the bedding interface opening condition can be accurately evaluated, and the model can consider the mutual disturbance effect among the multi-cluster fractures and the stress interference effect of the adjacent bedding interfaces; the activation condition of each bedding interface under the conditions of different clusters, crack initiation positions, displacements and liquid viscosities is obtained through variable analysis, and help is provided for the fracturing construction process, segment cluster division optimization and construction parameter optimization.

To provide a liquid dispensing device and a determination method capable of detecting a defective nozzle condition caused by increased viscosity of the liquid inside the nozzle. [Solution] The image forming apparatus includes a wiper 72 that wipes off ink IN1 adhering to the nozzle surface 33A of the recording head, an imaging unit 74 that images the nozzle surface 33A after the ink IN1 has been wiped off by the wiper 72, an acquisition processing unit that acquires the amount of ink IN1 drawn out from inside the nozzle 34 to the nozzle surface 33A by the wiper 72 based on the imaging results from the imaging unit 74, and a determination processing unit that determines that the nozzle 34 is in a defective state if the amount of ink IN1 acquired by the acquisition processing unit is less than a first threshold.