31 results about "Viscous medium" patented technology

The invention discloses a viscoelastic wave reverse time migration imaging method based on finite difference algorithm solution, and the method comprises the steps: S1, combining with the complex modulus of a constant Q model, and deriving a viscoelastic wave attenuation equation suitable for finite difference algorithm solution through introducing weighting function approximation; s2, establishing a viscoelastic wave compensation equation by introducing a compensation item for compensating energy attenuation when seismic waves are propagated in a viscoelastic medium, and combining the wave field compensation item with low-pass filtering for calculation to realize stable compensation of a wave field; s3, performing longitudinal and transverse wave field separation on the seismic source wave field and the detector wave field; s4, applying a seismic source normalization cross-correlation imaging condition to the separated wave field to obtain an attenuation compensation reverse time migration imaging result; and S5, setting a seismic wave excitation source and a signal receiving device for wave field data acquisition. The method provided by the invention can effectively improve the precision and resolution of seismic imaging in the viscous medium.

The utility model belongs to metal material processing technical field, specifically speaking is a kind of stainless steel water tank processing sand blasting device, including storage jar, the outside both sides of storage jar are fixedly installed with a plurality of first fixed plate, the bottom one end of a plurality of first fixed plate is fixedly installed with limit stop, rotatingly installed with connecting block between a plurality of first fixed plate, the bottom of connecting block is tightly in the top of limit stop, rotatingly installed with first fixed block in the inside of connecting block;Connecting block of first fixed plate between damping shaft connection utilizes the rotary resistance that damping shaft passes through its internal viscous medium, makes rotary lever and damping rod hover, slows down its descending speed, when rotating to certain angle, connecting block will be blocked by limit stop, makes that spray gun cannot continue to descend, and the rotary angle of spray gun is made by damping shaft to resist the force that its output port keeps forward direction makes it, avoid the problem that spray gun drops to ground due to the impact force of sand blasting process to cause injury to surrounding personnel.

The application discloses a double-layer inflatable edge ring device for viscous medium forming of a ring-shaped thin-wall part and a working method thereof, and relates to the technical field of edge ring devices. The edge ring device comprises a viscous medium forming assembly and an edge ring pressure control assembly, and the edge ring pressure control assembly is used for providing an edge pressure for the viscous medium forming assembly. The edge ring of the edge ring device adopts a double-layer inflatable structure, and can be closely combined with a forming plate with different structural characteristics. The edge pressure during the forming process of the plate can be controlled by adjusting the air pressure, the edge pressure of the plate is uniformly distributed in the circumferential direction, the generation of wrinkles at the edge of the formed part is reduced, and the forming quality of the ring-shaped thin-wall part is improved.

The invention relates to a machining method and system for a hard and brittle material workpiece. In one aspect, the machining method comprises the steps that a viscous medium is applied to the to-be-machined surface of a workpiece; and the fixed abrasive tool makes contact with the to-be-machined surface and generates relative movement for grinding machining, in the grinding machining process, abrasive particles falling off from the fixed abrasive tool in the grinding machining process are captured by the viscous medium and suspended at the contact interface of the fixed abrasive tool and the workpiece, so that a free abrasive layer is formed, and the free abrasive layer is separated from the to-be-machined surface. And therefore, the abrasive particles in the free abrasive material layer perform in-situ grinding on the to-be-machined surface. Therefore, the cutter lines are reduced or even eliminated, and the surface machining quality of the workpiece is improved.

The invention discloses an annular thin-wall part viscous medium forming double-layer pneumatic type blank holder device and a working method, the annular thin-wall part viscous medium forming double-layer pneumatic type blank holder device comprises a viscous medium forming assembly and a blank holder pressure control assembly, and the blank holder pressure control assembly is used for providing blank holder force for the viscous medium forming assembly. The double-layer inflatable edge pressing device has the technical effects that according to the double-layer inflatable edge pressing device for annular thin-wall part viscous medium forming, the edge pressing ring is of a double-layer inflatable structure, the edge pressing ring can be tightly attached to formed plates with different structural characteristics, the edge pressing force in the plate forming process is controlled by adjusting the air pressure, and the edge pressing efficiency is improved. Blank pressing force of the plate is evenly distributed in the circumferential direction, so that wrinkles at the blank pressing position of a formed part are reduced, and the purpose of improving the forming quality of the annular thin-wall part is achieved.

The application relates to the technical field of volume pumps, in particular to an improved reciprocating pump which comprises a power unit and a hydraulic unit; the improved reciprocating pump further comprises a compensation unit which is arranged on the hydraulic unit and is used for compensating the liquid suction effect of a far-end cylinder, the compensation unit comprises a compensation frame arranged below the hydraulic unit, a plurality of compensation cylinders are mounted on the upper end of the compensation frame and are in communication, a pushing part is arranged in the compensation cylinder, and a feeding head is mounted on the end of the compensation frame. The compensation unit adopted by the application cooperates with the driving unit, can effectively fill the viscous medium into the plurality of cylinders of the hydraulic unit, avoids the phenomena of multiple-cylinder liquid stealing, suction flow deviation and far-end cylinder cavitation during the use of the reciprocating pump, avoids the damage of core components such as pump cylinders and piston rods, ensures the uniformity of the liquid suction of the reciprocating pump, and greatly prolongs the service life of the core vulnerable components.

The invention relates to the technical field of displacement pumps, in particular to an improved reciprocating pump which comprises a power unit and a hydraulic unit. The improved reciprocating pump further comprises a compensation unit, the compensation unit is arranged on the hydraulic unit and used for compensating the liquid suction effect of the far-end cylinder, the compensation unit comprises a compensation frame arranged below the hydraulic unit, the upper end of the compensation frame is provided with and communicates with a plurality of compensation cylinders, and pushing parts are arranged in the compensation cylinders. And a feeding head is mounted and communicated with the end part of the compensation frame. According to the reciprocating pump, the adopted compensation unit is matched with the driving unit, the multiple cylinders of the hydraulic unit can be effectively and actively filled with viscous media, the phenomena of multi-cylinder liquid grabbing, suction bias flow and far-end cylinder cavitation during use of the reciprocating pump are avoided, damage to core components such as the pump cylinder and a piston rod is avoided, the liquid suction uniformity of the reciprocating pump is guaranteed, and the service life of the reciprocating pump is prolonged. And the service life of a core damageable part is greatly prolonged.

A viscous medium based migration imaging method, relating to the technical field of oil geophysical prospecting, and comprising: determining a total attenuation travel time and a phase compensation function of seismic waves in a viscous medium; constructing an amplitude compensation function related to absorption attenuation; constructing the amplitude compensation function having gain control; determining a new viscous medium compensation function on the basis of the phase compensation function and the amplitude compensation function of the seismic waves in the viscous medium; performing Fourier transform on seismic records of receiver points of the seismic waves in the viscous medium to obtain the seismic record of a frequency domain; performing frequency division compensation on the seismic record of the frequency domain on the basis of the new viscous medium compensation function to obtain seismic data obtained after compensation; and performing pre-stack depth migration processing on said seismic data to obtain a viscous medium based migration imaging profile. Further provided is a viscous medium based migration imaging device. The problem of absorption attenuation compensation of a region having a small Q value can be solved, and the resolution of a seismic imaging profile is improved.

The utility model discloses a full heat tracing torque tube clamping body assembly which comprises a clamping body tube, a clamping body ring and a heat tracing device, the clamping body tube is arranged in an inner cavity of a cylinder, one side of the cylinder is connected with the clamping body ring through a connecting channel, and one part of the heat tracing device is installed on the clamping body ring; the heat tracing device comprises a ring heat tracing plate, the ring heat tracing plate is installed on the clamping body ring, one side of the ring heat tracing plate is connected with one end of a flange connecting pipe, the other side of the ring heat tracing plate is connected with one end of a heat tracing bent pipe, and the other end of the heat tracing bent pipe is connected with the barrel. And a main heat tracing pipe is mounted on one side of the clamping body pipe in the inner cavity of the barrel. The torque tube clamping body assembly solves the problems that some existing torque tube clamping body assemblies in the current market do not have heat tracing under the common working condition, so that the measurement precision is easily influenced by medium crystallization under the condition of the working condition with crystallized and viscous media, and the final measurement precision is influenced.

The invention discloses an anti-interference stable partial discharge sensor. The anti-interference stable partial discharge sensor comprises a rear shell, the front cover is mounted on the front surface of the rear shell; a shielding assembly is arranged in the front cover and comprises a conductive layer, a permalloy middle layer and a copper lining layer which are sequentially arranged in a sleeved mode from outside to inside, in the using process, a high-frequency electromagnetic field is shielded through the conductive layer, the permalloy middle layer is made of a high-permeability magnetic material and can shield a low-frequency magnetic field, the copper lining layer further absorbs residual electromagnetic waves, and the shielding effect is good. The three are separated through the first particle mixing layer, so that eddy current interference caused by an electric continuum formed by direct contact is avoided, and vibration attenuation is realized at the same time; the three shielding layers are arranged in the sensor shell, the two independent cavities are formed and filled with the heavy metal damping particles and the soft magnetic absorption particles respectively, a cooperative anti-interference system is constructed, the heavy metal particles in the inner cavity are mixed with the viscous medium, and mechanical vibration energy can be efficiently absorbed through inertia friction.

The invention relates to a system with a cartridge (12) and with an actuating device (10) for actuating the cartridge (12), wherein the actuating device (10) has a housing (14) with an interior (78) in which a linearly acting drive is arranged, wherein the cartridge (12) has a cylinder chamber (80) and a displacement element (40) movably arranged in the cylinder chamber (80), wherein the displacement element divides the cylinder chamber (80) into a receiving chamber (46) for receiving a viscous medium and an empty chamber (81) and separates them fluid-tight from each other, wherein the linearly acting drive can be brought into engagement with the displacement element (40) of the cartridge (12), wherein the cartridge (12) and the housing (14) each have connecting elements for a detachable connection to each other along a joining direction.wherein an axially acting seal (82) with respect to the joining direction is arranged between the housing (14) and the cartridge and wherein the interior (78) and the void (81) are hermetically sealed in the connected state.

The invention relates to the technical field of geological exploration in the petroleum industry, in particular to a viscous-acoustic medium angle gather extraction method based on self-adaptive wave beam reverse time migration. According to the method, the self-adaptive beam operator depending on local space velocity change is introduced to realize automatic focusing of the seismic beam, and the absorption attenuation effect caused by the viscosity is compensated through the viscous sound medium during complex value travel; slowness information of a shot point is extracted based on travel time information of a self-aggregation seismic beam, a reflection field angle at an imaging point position is further calculated, an imaging value is located at a correct position according to the range and interval of the reflection field angle, and direct extraction of a viscous sound medium angle gather is achieved. According to the method, the absorption attenuation effect caused by the viscosity of the medium can be effectively compensated, the high-quality angle gather can be output, the calculation efficiency and the calculation precision are both achieved, and powerful support is provided for migration velocity analysis and oil reservoir description work of the viscous medium.

The invention relates to the technical field of fluid pressure measurement, and particularly discloses a tunnel grouting pressure difference dual-channel synchronous monitoring and unbalance alarm system. The system comprises a real-time pressure data generation module which generates real-time pressure data with space coordinates by arranging upstream and downstream pressure sensor arrays; the pressure wave conduction characteristic compensation module is used for extracting phase distortion characteristics of the grouting pressure waves in the viscous medium and performing phase compensation and time synchronization processing on the data; the dual-channel differential pressure space-time tensor construction module is used for constructing a pressure gradient three-dimensional tensor bound with space coordinates based on the compensated data; the imbalance early warning signal generation module is used for generating early warning by analyzing that the entropy value of the pressure difference time sequence fluctuation exceeds a stable range; and the grouting parameter compensation instruction generation module is used for positioning the unbalance section and generating a targeted compensation instruction in combination with the material rheological parameters. According to the method, the problems of poor time-space synchronism of dual-channel pressure data and quantitative early warning of pressure unbalance are solved, and the safety and regulation and control precision of the grouting process are improved.

The invention relates to the technical field of non-electrical variable regulation, and discloses a red oil chili fermentation production control system, which comprises a logic processing unit, a disturbance frequency modulation module and a torque load execution module, and is characterized in that the logic processing unit outputs a perturbation instruction to the disturbance frequency modulation module; the control torque load execution module superposes perturbation frequency signals under the operation rotating speed, obtains the dynamic phase difference of real-time response torque data relative to driving frequency signals, calculates the effective damping component caused by a controlled viscous medium, corrects the offset error of a physical reference line, further determines the fermentation viscosity state and outputs a control instruction, and finally controls the fermentation viscosity state. Mechanical loss and fluid load are separated through frequency domain phase difference, sensing reference self-calibration is achieved, the problem of adjustment misalignment caused by sensing passivation in the grease corrosion environment is solved, and the consistency of fermentation products is ensured.

The noise reduction and shock absorption device comprises a machine body, an immersion structure is arranged on the surface of the machine body, a shock absorption and noise reduction assembly is arranged on the surface of the immersion structure, one end of the shock absorption and noise reduction assembly is connected with a heat exchanger, the immersion structure comprises a protective shell, the protective shell is cylindrical, and a mounting cavity is formed in the protective shell; the shock absorption and noise reduction assembly comprises a box body, a liquid cavity is formed in the box body, the protective shell is located in the liquid cavity, shock absorption springs and a pasting pad are installed on the inner wall of the box body in an array mode, the lower half portion of the air compressor body is immersed in liquid, double efficient dissipation of sound waves and vibration energy is achieved, in the aspect of shock absorption, the liquid serves as a high-density viscous medium, and the damping effect is good. A strong damping effect is formed on vibration of a machine body, and vibration energy is quickly converted into heat energy through internal friction when trying to push liquid molecules to move, so that solid sound transmitted through a foundation is greatly weakened, the problem of overall shaking of equipment is effectively solved, and noise reduction is achieved.

The application discloses a carbon dioxide sticking temporary plugging fracturing method, which comprises the following steps: firstly, injecting carbon dioxide into a reservoir to form an initial high-permeability fracture in the reservoir; then, introducing a first sand-carrying fluid containing a viscous medium into the reservoir to solidify and fill the initial high-permeability fracture, wherein the viscous medium can be cracked under the action of geothermal energy after being solidified; further, before the initial high-permeability fracture is opened by the cracking of the solidified viscous medium, injecting carbon dioxide into the reservoir again to form a yield-increasing low-permeability fracture in the reservoir; and finally, after the initial high-permeability fracture and the yield-increasing low-permeability fracture form a production fracture network, fracturing production is carried out on the reservoir. By the method, the production fracture network composed of the initial high-permeability fracture and the yield-increasing low-permeability fracture can be formed in the target oil and gas reservoir with uneven geological conditions, the production fracture network has a large number of fractures and a complex network, and the oil and gas production can be increased in the subsequent fracturing production process.

The utility model relates to the technical field of liquid level meters, and discloses an automatic telescopic floating ball liquid level meter which comprises a rotary encoder, a floating ball and a sleeve, the floating ball is arranged in the sleeve, an opening is formed in the sleeve, liquid flows into or out of the sleeve through the opening, the rotary encoder is located above the floating ball, and the floating ball is connected with the rotary encoder through a connecting line. The rotary encoder is connected with a clockwork spring for driving the rotary encoder to rotate and loosen; the rotary encoder is used for generating a corresponding electric signal according to the position change of the floating ball, the electric signal can be used for calculating the height of the liquid level and can be digitally displayed or further transmitted to a control system, and the floating ball and the connecting wire are arranged in the sleeve, so that the floating ball is prevented from shaking everywhere in the measurement process to influence the metering accuracy; and a stable up-and-down action space is provided for the floating ball under the action of the sleeve, so that the problem of inaccurate measurement of a high-temperature viscous medium in the liquid level meter is solved.

The application discloses a photovoltaic panel assembly component and an assembly method. The photovoltaic panel assembly component comprises two assembly bodies which are symmetric to the center, are clamped to each other and are arranged between two adjacent photovoltaic panels, so that the two adjacent photovoltaic panels are connected to each other, and the two assembly bodies jointly define a sealed cavity which is filled with a viscous medium. The viscous medium has a first state and a second state. In the first state, the viscous medium is in a solid state, and the two assembly bodies are bonded to each other. In the second state, the viscous medium is in a liquid state, and the two assembly bodies are detachable. The photovoltaic panel assembly component of the application discards the bolt fixing connection mode, adopts the clamping and bonding connection mode of the assembly bodies, improves the dismounting efficiency of the photovoltaic panel, reduces the labor intensity, and avoids the problems of bolt corrosion and cleaning dead angle.

The invention relates to the technical field of suction equipment, and discloses a vacuum pump for processing polyester polyol, the vacuum pump comprises a base, the top of the base is provided with a shell, the front end of the shell is fixedly connected with a front plate, the side, away from the shell, of the front plate is fixedly connected with the base, and the inner wall of the front plate is rotatably connected with a driving shaft through a bearing; the outer wall of the driving shaft is fixedly connected with a rotating assembly, through holes are formed in the fan blades by arranging the rotating assembly, so that part of working liquid in the first hollow column can flow to the back faces of the fan blades through the through holes, and the viscous medium of polyester polyol is effectively prevented from being attached and accumulated on the back faces of the fan blades; and therefore, the problems of local unbalance of a liquid ring, increase of rotation resistance of the fan blades and the like caused by scale deposition on the back surfaces of the fan blades are prevented, the running smoothness of the fan blades and the continuous and stable running capacity of the whole equipment are improved, and the shutdown cleaning frequency caused by scale deposition on the fan blades is reduced.

The present disclosure relates to a damping system for counteracting oscillations in a structure. The damping system comprises a pendulum device and a container containing a viscous medium. The pendulum device comprises a mass body comprising a porous structure. The porous structure is configured to allow the viscous medium to pass through it. The porous structure is at least partially immersed in the viscous medium.

The invention discloses a temperature data acquisition device for an oil field, and relates to the field of sensors. According to the scheme, a detection end is tightly attached to the interior of a detection pipe section through elastic supporting of an armor plate, so that the detection end in a large-span deformation state matched with the perimeter of the inner wall of a pipe diameter is formed; the inner diameter of different pipelines can be matched with the optimal contact area of the passing ability corresponding to the inner diameter, so that scaling and the like are formed on the surface after the pipeline is used for a long time, based on the large contact area, the temperature of the pipeline still can stably heat a detection end, the influence of the pipeline on a temperature detection result is greatly reduced, and when crude oil flows unevenly, the pipeline is not damaged. The layout mode that the inner wall is uniformly coated and attached can greatly adapt to local temperature sampling deviation; and meanwhile, through a mode of fitting the inner wall of the detection pipe section, the resistance of rapid conveying of a viscous medium can be greatly reduced, bending caused by relatively large resistance load is avoided, and meanwhile, the problem that a traditional armored temperature sensor cannot be stably put and used for a long time due to excessive surface abrasion is avoided.

This invention discloses an efficient viscosonic wave attenuation compensation reverse-time migration method based on a weighted function approximation. The method includes: S1, introducing a weighted function approximation to derive a viscosonic wave attenuation equation applicable to finite difference solutions; S2, based on the viscosonic wave attenuation equation, establishing a viscosonic wave compensation equation to compensate for energy attenuation during seismic wave propagation in a viscous medium; S3, implementing an attenuation-compensated reverse-time migration imaging process, wherein the wavefield compensation term is combined with low-pass filtering calculations to achieve wavefield stability compensation; S4, configuring the source and receiver settings to perform reverse-time migration imaging. The method of this invention efficiently achieves wavefield stability compensation and attenuation-compensated reverse-time migration imaging, effectively improving the accuracy and resolution of seismic imaging in viscosonic media.

The utility model discloses a composite shockproof damper combining spring, hydraulic pressure and eddy current. The composite shockproof damper comprises a connecting rod assembly, a damping wall assembly, a rotating support and a shell. The connecting rod assembly comprises a magnetic body, a spring and a connecting piece, the damping wall assembly is of a multi-layer composite structure and forms a closed cavity, and the cavity is filled with a viscous damping medium; a channel structure for guiding the viscous medium to flow is arranged in the magnetic body, and the spring has the rigidity nonlinear change characteristic; the rotating support is provided with a rotating mechanism, and the outer side of the damping wall assembly is wrapped with the shell. The damping wall assembly comprises a conductive layer and a heat dissipation layer, eddy current damping is generated through relative movement of the magnetic body and the conductive layer, and the heat dissipation layer is thermally coupled with the conductive layer. According to the utility model, elastic restoring force is provided during small-amplitude vibration, so that the small-amplitude vibration of a bridge is effectively inhibited; under the large-amplitude earthquake working condition, the spring enters a plastic stage, and energy is absorbed through plastic hysteretic deformation; and the damper can keep efficient energy consumption under different earthquake intensities.

A vibration damper in buildings is to be realized by means of hollow bodies embedded in concrete, characterized in that the hollow bodies are partially filled with a viscous medium.

The utility model relates to metallurgical production technical field, specifically disclose an intelligent sampling system of on -line analysis appearance, aims at solving the problem that the existing sampling system is blocked because sampling pipe is easy to attach particulate matter and viscous medium and is not completely cleaned up, the system includes the runner, sampling shell, control box and sampling pipe, sampling shell is inserted in the runner, and its bottom interlayer is equipped with ultrasonic transducer and is linked with ultrasonic generator, and intelligent controller in control box controls sampling pump, ultrasonic generator and other components through relay group. The utility model generates high frequency vibration scouring sampling pipe attachment through ultrasonic transducer, and static liquid cover improves cleaning efficiency, avoids manual frequent dismounting, reduces operating cost, improves system automation degree and stability, has the advantages such as convenient installation and strong versatility.

The invention provides a reaction kettle for resin production, which comprises: a reaction kettle body having a stirring space; the stirring assembly is arranged in the stirring space; the bubble removing assembly is located in the stirring space, is in transmission connection with the stirring assembly so as to synchronously move and is used for adding a liquid defoaming agent into the stirring space; the pressurizing assembly is connected with the defoaming assembly and used for providing pressure for injection of the liquid defoaming agent, dynamic adding of the defoaming agent is achieved, the defoaming agent is directly and evenly dispersed to a high-risk area where bubbles are generated through stirring motion, meanwhile, pressure in the kettle can be overcome through pressurizing injection, and the defoaming effect is improved. It is ensured that the defoaming agent effectively permeates into a viscous medium and destroys an air bubble film, generation and retention of air bubbles are inhibited from the source, and the problem that the air bubbles are difficult to discharge in the production process of high-viscosity resin is solved.

The utility model discloses a collaborative high-temperature viscous medium storing and conveying device which comprises a material storing tank, a connecting pipe and a receiving tank, a discharging pipe of the material storing tank is connected with a feeding pipe of the receiving tank through the connecting pipe which is arranged in an inclined mode, and a discharging opening of the discharging pipe is higher than a feeding opening of the feeding pipe. A pressurizing pipe connected with a gas outlet of an external gas compressor is arranged on the storage tank; and a negative pressure pipe connected with a gas inlet of an external vacuum pump is arranged on the receiving tank. According to the collaborative high-temperature viscous medium storage and conveying device, the storage tank and the receiving tank are arranged in a gradient potential difference mode, the mobility of a medium is improved by combining pressurization and negative pressure with the dead weight of the medium, and therefore the high-temperature viscous medium is efficiently and stably conveyed, and use is convenient.

The present application relates to the technical field of centrifugal pumps, and discloses a viscous medium anti-blocking energy-saving centrifugal pump, which comprises a supporting base for bearing a device main body, a three-phase asynchronous motor is fixedly connected to the top of the supporting base through a support to provide centrifugal force, a volute is fixedly connected to the top of the supporting base through a support, and an impeller assembly is fixedly connected to the inner wall of the volute. The viscous medium anti-blocking energy-saving centrifugal pump is provided with a filtering device, the viscous medium is uniformly guided by an induction cone column, and then large-particle impurities are preliminarily filtered by a first filter plate. The viscous medium after preliminary filtration is finely filtered by a second filtering assembly, small impurities are effectively intercepted, and the cleanliness of medium conveying is improved. The viscous medium anti-blocking energy-saving centrifugal pump is provided with a sealing connection assembly, a double-layer sealing protection structure is formed by a first sealing ring and a second sealing ring, the assembly is tightly fitted, and the problem of leakage of high-pressure viscous medium is effectively avoided.

The application discloses a kind of based on pretreatment iterative method's viscous medium scattering wave numerical simulation method, first in background wave number Small virtual component is introduced into, and then a L-S equation with complex wave number is obtained;Then, a pre-solution factor defined with the aid of the small virtual component is used to pretreat the L-S equation with complex wave number;Finally, the L-S equation after pretreatment is iteratively solved using iterative method, and the Born series improved by complex wave number and pretreatment is obtained;During the whole process, a small virtual component is introduced to improve the divergence problem of Born series in strong disturbance medium, and the calculation efficiency is further accelerated using the pre-solution factor;And in order to avoid solving large iterative matrix, the velocity model is divided into thin plates using the idea of thin plate division, so as to convert global calculation into local calculation, and through the above process, the seismic scattering wave record with high efficiency and good accuracy is finally extracted.

Method for focusing a viscous medium dispensed from an output opening (3) of an output device (2) of a jet device (1), wherein at least one gas stream (11) is directed onto the viscous medium between the output of the viscous medium and the impact of the viscous medium on a substrate (4), wherein the viscous medium is focused by means of the gas stream (11), wherein the gas stream (11) is guided such that it rotates around the viscous medium, characterized in that the gas stream (11) passes through at least one gas outlet (9) of a nozzle device (7) before the gas stream (11) impacts the viscous medium, and that the nozzle device (7) has an opening (8) for the viscous medium and the nozzle device (7) rotates around the opening (8) for the viscous medium.