142 results about "Capillary pressure" patented technology

The invention discloses a capillary pressure and contact angle synchronous characterization method and device of a microfluidic fluid interface, and relates to the field of interface analysis and multiphase seepage in pore media, and the method comprises the following steps: based on a pre-configured pore, particle and fluid binary image, distinguishing and extracting a fluid-particle contact interface contour and an attack / defense fluid interface contour; fitting and determining the curvature radius of each fluid interface contour through a watershed region division algorithm and reordering smoothing of Fourier descriptors; generating a multi-level size pore space based on the pore binary image, and obtaining a pore overlook radius; calculating a necking angle in combination with the curvature radius and the multi-stage size pore space to obtain an apparent contact angle and an intrinsic contact angle; and calculating the capillary pressure of the attack / defense fluid interface by combining the curvature radius, the pore overlook radius, the chip depth and the interfacial tension. According to the invention, high-precision technical support is provided for micro-fluidic multiphase seepage research.

A semiconductor apparatus includes a semiconductor chip including a semiconductor integrated circuit, a cooling channel at least partially in the semiconductor chip and including a fine pattern on at least a portion of a wall surface of the cooling channel, the fine pattern configured to generate a capillary pressure that induces a flow of a liquid coolant, and a temperature controller configured to control a supply temperature of the liquid coolant supplied to the cooling channel.

The invention relates to a shale or coal rock gas evaluation method based on a gas-water two-phase flow isotope fractionation model. The shale or coal rock gas evaluation method comprises the following steps: 1, collecting data; 2, establishing a gas well model; 3, establishing a control equation set; 4, coupling the influence of the real gas effect and the effective stress; 5, establishing a gas transmission model and a relative permeability model; 6, establishing a relation between capillary pressure and saturation; 7, considering critical desorption pressure; 8, setting boundary conditions of initial conditions; 9, solving a control equation set; 10, calculating production dynamic parameters and isotope values; 11, performing history fitting; 12, verifying historical fitting quality; 13, predicting productivity; 14, calculating a gas dynamic output proportion; 15, identifying a fractionation inflection point and gas production mechanism conversion; by coupling gas-water two-phase flow, multiple gas transmission mechanisms, stress sensitivity and methane isotope competitive adsorption theories, yield prediction of the deep reservoir and quantitative evaluation of the dynamic proportion of produced gas are realized.

The invention relates to the field of heat exchange and heat conduction, in particular to a composite wick, a vapor chamber and a heat pipe. Comprising a first material layer which is provided with a first surface and a second surface, the first surface and the second surface are respectively provided with a diversion trench, and the diversion trench on the first surface and the heat conduction element shell jointly define a capillary channel; the second material layer is attached to the second surface of the first material layer, and capillary channels are defined by the second material layer and the flow guide grooves in the second surface of the first material layer. The first material layer and the second material layer of the wick and the shell define the capillary channel, the open flow guide grooves in the first material layer form the capillary channel, the flow speed and flow of working medium backflow are increased, and then the heat transfer capacity is improved. The characteristics of high capillary pressure and large flow can be achieved at the same time by regulating and controlling the size of the capillary channel of the first material layer and the size of the steam through hole of the second material layer of the wick.

The invention belongs to the technical field of oil and gas reservoir engineering and multiphase seepage dynamic monitoring, relates to a characterization method of seepage behaviors of multiphase fluid in a porous medium, and particularly provides a dynamic construction method of a multiphase displacement capillary pressure-saturation relationship based on nuclear magnetic resonance. Comprising the following steps: S1, acquiring a low-field nuclear magnetic resonance relaxation spectrum of a porous medium in a gas-water two-phase displacement process; s2, determining two-phase fluid interfacial tension, a wetting contact angle and a rock surface relaxation rate; s3, determining the dynamic cut-off relaxation time of the displacement stage; s4, calculating equivalent capillary pressure; the residual water saturation is calculated, and the equivalent capillary pressure is the capillary pressure corresponding to the current displacement stage and is used for constructing a capillary pressure-saturation curve. According to the method, the capillary pressure change in the porous medium can be obtained only through spectral analysis without a centrifugal or mercury injection experiment.

The invention discloses a metamorphic rock buried hill fractured reservoir imbibition characteristic curve calculation method. The method comprises the steps that samples of different matrix rock mass types in a target area are collected; the novel reverse imbibition experiment device is used for carrying out an imbibition experiment; drawing an experimental imbibition recovery ratio change scatter diagram; establishing an oil and water relative permeability and capillary pressure curve representation function; establishing an imbibition mathematical model under the cylindrical coordinate system, and calculating a theoretical imbibition recovery ratio; fitting by adopting a least square method and a genetic algorithm to obtain imbibition characteristic parameters; drawing imbibition characteristic curves of different types of matrix rock blocks; establishing a geologic model; and carrying out numerical simulation by adopting a relative permeability zoning mode, and the like. The method is reliable in technical principle and clear in logic, prediction of the relative permeability curve and the capillary force curve of the matrix rock core is more accurate, and the method has important significance in research on fine numerical simulation, remaining oil prediction, water injection strategy optimization and the like of a double-hole single-permeability oil reservoir.

A capillary pressure measurement device includes a centrifuge having a rotating apparatus adapted to hold porous media samples and to test the samples under centrifugal motion during rotation of the rotating apparatus. A fluid capture device disposed adjacent to each porous media sample receives fluid displaced from the sample due to centrifugal motion applied to the sample during rotation. A measurement system measures an amount of fluid displaced from the porous media samples by taking an image of a fluid meniscus in the fluid capture device. A position sensor determines a position of the fluid capture device and triggers a camera to take the image of the fluid meniscus when the fluid meniscus is in a field of view of the camera. The image of the fluid meniscus is processed to determine a fluid volume correlated to capillary pressure of the corresponding porous media sample.

The invention discloses a soil or groundwater remediation agent in-situ precise injection and transmission effect evaluation test system, and belongs to the technical field of stratum pollution remediation. The device comprises a stratum simulation assembly, a stratum pressurization assembly and a parameter detection assembly, wherein the stratum simulation assembly comprises an experimental silo for storing a simulated stratum sample; the stratum pressurization assembly is arranged opposite to the experiment silo and can simulate pressure of different stratum depths; the parameter detection assembly comprises a plurality of pressure detection units which are vertically arranged at intervals along the experimental silo, each pressure detection unit comprises a capillary pressure measuring pipe and a plurality of pressure sensors, the capillary pressure measuring pipes are arranged in the radial direction of the experimental silo, and one end of each capillary pressure measuring pipe is communicated with the simulated stratum sample through the experimental silo; and the plurality of pressure sensors are arranged at intervals along the capillary piezometric tube so as to test the osmotic pressure of different positions of the capillary piezometric tube. Laboratory simulation can be carried out on the process of repairing the polluted stratum by the repairing liquid.

The invention discloses a carbonate rock water saturation modeling method and device based on pore structure classification, and belongs to the technical field of rock physics and well logging interpretation. Carrying out matched conventional pore permeability, rock electricity, casting body slice, nuclear magnetic resonance and constant-speed mercury injection experiments on the reservoir core; dividing pore structures into four types according to core casting body sheet characteristics, nuclear magnetic resonance T2 spectrum distribution characteristics and capillary pressure curve forms; the actual water saturation of the reservoir rock core is obtained according to the nuclear magnetic resonance experiment in the rock core saturation and centrifugal state; respectively fitting rock electrical parameters for the four pore structure types; and calculating the water saturation of the whole well section in combination with an Archie formula. According to the method, the relation between the carbonate rock pore structure and the rock electrical parameters is fully excavated, the problem that the non-Archie phenomenon of the heterogeneous carbonate rock reservoir is serious is solved, and the calculation precision of the water saturation is greatly improved.

The present invention relates to the technical field of oil and gas field development, and specifically relates to a method for converting the transverse relaxation time distribution into the capillary pressure distribution. The present invention proposes a correction coefficient for converting the high-pressure mercury intrusion pore throat radius into the transverse relaxation time, and then obtains the conversion coefficient by using linear interpolation and volume ratio weighting, and establishes a method for converting the transverse relaxation time distribution into the capillary pressure distribution, providing a technical reference for studying the microscopic structure and properties of reservoirs.

The application discloses a reservoir gas-water relative permeability determination method, and relates to the field of reservoir permeability determination. The method comprises the following steps: obtaining a core sample of a target reservoir and determining the geometric size of the core sample; injecting simulated formation water into the core sample until the core sample is saturated, and performing nuclear magnetic scanning to obtain a reference nuclear magnetic signal and an initial porosity distribution; performing a multistage gas injection pressure experiment in an intermittent displacement mode to obtain quasi-steady-state displacement data; constructing a two-phase percolation numerical model with phase permeability curve parameters and capillary pressure curve parameters as to-be-inverted parameters; constructing a target function based on the quasi-steady-state data and performing inversion solving to obtain optimal parameters; and determining the phase permeability curve and the capillary pressure curve based on the optimal parameters. The application obtains the fluid distribution inside the core through nuclear magnetic resonance, obtains quasi-steady-state data in combination with intermittent displacement, and inversely solves the phase permeability and the capillary pressure, so that the problem that the fluid distribution inside the core cannot be accurately reflected and the multi-solution problem cannot be solved is solved, and the influence of the capillary end effect is eliminated.

The present invention discloses a method for predicting the recovery rate of deep coalbed methane, comprising: determining correction values ​​of physical parameters, capillary pressure, reservoir porosity and water saturation, as well as average coal reservoir pressure, cumulative water production and conventional average deviation coefficient of gas under multiple production dates, calculating the actual average deviation coefficient of gas, establishing a prediction model for reservoir gas production, calculating an iterative value of a control volume according to the correction values ​​of physical parameters, capillary pressure, reservoir porosity and water saturation and original gas reserves of the reservoir, returning the iterative value to an initial given value that replaces the control volume for cyclic calculation, determining a first relationship model between cumulative water production and average coal reservoir pressure, determining a vertical axis prediction value of the prediction model under a given exhaust gas pressure according to the first relationship model, substituting the vertical axis prediction value into the prediction model established last time in the cyclic calculation to obtain the recoverable reserves of coalbed methane and calculate the recovery rate, thereby achieving the purpose of improving the reliability of the prediction.

The invention relates to the technical field of crystal structure prediction, and discloses a quantum algorithm-based energetic CxNyOz crystal structure prediction method, which comprises the following steps of: calculating an evaporation and diffusion dimensionless number and capillary pressure by obtaining surface tension, a contact angle, a geometric feature scale, temperature, partial pressure, a diffusion coefficient and an evaporation rate; establishing a residual solvent mole fraction and solvent chemical potential sequence; constructing a binary layer occupancy model Hamiltonian containing layer occupancy energy, adjacent layer action energy, a capillary pressure volume term and a molecular polarity action term, and obtaining a hierarchical occupancy number by using a quantum approximation optimization algorithm; calculating interlayer respiration and shear frequency and mode volume sensitivity based on a quantum variation algorithm; and finally, the lattice spacing and the prediction result are obtained through cost functional minimization, and accurate prediction and quantitative analysis of the structure of the energetic crystal under the unbalanced desolvation condition are realized.

The invention relates to the technical field of mine treatment, in particular to a mine environment treatment method and system based on an AI virtual simulation technology. The method comprises the following steps: acquiring a dynamic geological parameter set of a target mine; analyzing the dynamic geological parameter set, and determining liquid injection data and soil capillary pressure detection data; determining a composite diffusion mode of the treatment agent according to the liquid injection data and the soil capillary pressure detection data; analyzing the composite diffusion mode, and determining a spatio-temporal evolution rule; according to a spatio-temporal evolution rule, constructing an AI dynamic simulation model containing a treatment agent permeation feedback mechanism; based on the AI dynamic simulation model, performing multi-node data growth simulation on the plurality of treatment schemes, and generating a treatment effect evolution graph containing stratum response time-varying characteristics; analyzing the governance effect evolution graph, and determining the matching degree of the action depth of the governance agent in each governance scheme and the vegetation planting condition; and determining an optimal treatment scheme implementation path according to the matching degree.

The application provides a shale gas well recoverable reserves analysis method considering dynamic capillary effect, which utilizes shale gas well original production data to obtain a fitting relationship curve of original production and production time, further obtains effective production data, and obtains reservoir capillary pressure and dynamic capillary effect coefficient of each production time through the effective production data, further obtains initial ideal production considering dynamic capillary effect, fits basic parameters considering dynamic capillary effect, then obtains characteristic time, deduces future ideal production, and obtains future actual production after considering dynamic capillary effect again, and finally calculates recoverable reserves (EUR). The method can consider dynamic capillary effect, adopt a capillary bundle model, and make the analysis and prediction result more accurate.

The invention discloses a tight reservoir CO2-WAG oil displacement and burying capacity calculation method, device and equipment, and the method comprises the steps: constructing a first seepage control equation representing three-phase seepage control of a matrix system and a second seepage control equation representing three-phase seepage control of an artificial fracture system according to the law of mass conservation and momentum conservation; establishing a three-phase seepage auxiliary equation; and solving the first seepage control equation, the second seepage control equation and the three-phase seepage auxiliary equation based on the basic parameters of the tight reservoir of the target area, and calculating to obtain the productivity data of carbon dioxide-water vapor alternate driving carbon utilization and burying of the tight reservoir. According to the method, the influence of factors such as diffusion mass transfer, three-phase capillary pressure, three-phase relative permeability hysteresis and fluid channeling between fractures and matrixes on the CO2-WAG flooding seepage law of the tight reservoir is fully considered, and accurate and effective prediction and evaluation of the productivity and carbon dioxide burying potential of the tight reservoir in the target area can be achieved.

The utility model relates to heat pipe heat dissipation technical field especially, it relates to a V type metal wire woven net and have the heat pipe of this woven net. Its technical scheme includes: woven net cylinder, metal wire, pipe body and pipe head, the cross section of metal wire is V type design, each metal wire is woven into woven rope, each woven rope is interwoven in warp and weft direction and forms the V type metal wire woven net of plane net shape, V type metal wire woven net is completely rolled and forms woven net cylinder, woven net cylinder is inserted in the pipe shell inner wall of pipe body, woven net cylinder is arranged along the pipe shell axial direction of pipe body, both shape mutually adapts, the opening direction of V type groove on woven net cylinder is towards pipe body inner chamber, to utilize capillary pressure drive working liquid and return flow from condensation section to evaporation section. The utility model through V type cross section metal wire woven net cylinder can keep metal wire woven net lightweight and processing advantage, can improve capillary return flow capacity significantly, reduce flow resistance.

This invention relates to the fields of civil engineering and ecological slope protection, and discloses a prefabricated steel pipe confined concrete lattice beam slope protection structure and construction method. The slope protection structure includes an ecological planting substrate, a lattice framework, a recycled concrete core mixed with special materials, an adaptive capillary pressure relief micro-valve, and a sensing and monitoring unit. The structure, combined with sleeves and sliding wedges at the assembly nodes, converts the water absorption and expansion thrust of the concrete into radial expansion, effectively releasing local deformation caused by slope settlement. Its core function is to utilize the node expansion to deform the alloy ring, opening the pressure relief micro-valve and draining excess water to the ecological substrate. This invention avoids shear stress concentration and utilizes the structure's spontaneous adjustment and pressure relief mechanism to the hydrological environment, solving the problem of sudden stress caused by uneven local water inflow during short-term heavy rainfall, effectively improving the stability and ecological adaptability of the slope protection.

A pipette includes a capillary, a pressure chamber, a drive unit, and a control unit. The capillary has a first end and a second end that are two ends in a length direction and that are open. The pressure chamber communicates with an inside of the capillary via the second end. The drive unit changes a volume of the pressure chamber. The control unit controls the drive unit. The control unit outputs a vibrational movement signal that drives the drive unit so that a liquid moves from a mid-position in the capillary to a finish position that is located closer to the second end than the mid-position. The vibrational movement signal has a waveform that drives the drive unit so that the volume of the pressure chamber alternately increases and decreases repeatedly.

The application discloses a kind of multilayer heterogeneous reservoir percolation simulation analysis methods based on digital core, including obtaining the three-dimensional digital core model of high-permeability reservoir sample, medium-permeability reservoir sample and low-permeability reservoir sample;Get the pore network model after commingling;Based on the pore network model after commingling, simulate oil-water displacement and suction process by percolation theory, calculate the corresponding capillary pressure curve and relative permeability curve, and compare and analyze percolation characteristics.The beneficial effects of the technical scheme proposed in the application include: based on the pore network model after commingling, simulate oil-water displacement and suction process by percolation theory, calculate the corresponding capillary pressure curve and relative permeability curve, and compare and analyze percolation characteristics.Thereby, the multilayer heterogeneous reservoir percolation process can be simulated, and the interlayer interference influence mechanism and residual oil distribution characteristics during multilayer commingling in the reservoir with large differences in low-permeability and heterogeneity can be truly reflected.

This invention discloses a gas-water two-phase flow simulation method based on pore size evolution, belonging to the field of multiphase flow simulation technology. The method includes: discretizing the porous medium into a pore network model composed of pore nodes and connecting throats, and defining geometric parameters for each throat; updating the equivalent radius, cross-sectional area, perimeter, and shape factor of the throat at the next time step based on the pore size evolution equation, and further updating the single-phase fluid conductivity and capillary pressure of the throat at the next time step; solving for the fluid pressure field and flow rate field satisfying the law of mass conservation and Kirchhoff's equations in the pore network model according to the single-phase fluid conductivity and capillary pressure of the throat at the next time step, and advancing the gas-water two-phase interface until the termination condition is met, outputting the simulation results of the gas-water two-phase flow model. This method breaks through the static assumption of fixed pore throat geometry, achieving accurate characterization of the dynamic changes of pore throat structure in real underground environments, thus improving the accuracy of the simulation results.

The invention discloses a method and a system for analyzing a petroleum secondary migration mode. Comprising the following steps: carrying out an indoor physical experiment on to-be-evaluated petroleum to obtain a capillary number index for representing a competitive characteristic between capillary pressure and viscous force and a Bo number index for representing a competitive characteristic between buoyancy and capillary pressure in a secondary migration process of the to-be-evaluated petroleum; according to the ratio of the capillary number index to the Bo number index, determining the main power type of the to-be-evaluated petroleum by using a preset displacement pressure and buoyancy control migration mode identification chart; and determining the fluid secondary migration mode of the to-be-evaluated petroleum according to the main power type. According to the invention, the petroleum secondary migration law under different geological conditions can be analyzed.

The invention relates to the technical field of exploration and development, in particular to an intelligent reservoir classification method, device and equipment based on a capillary pressure curve. Comprising the following steps: acquiring experimental data of a plurality of capillary pressure curves, and carrying out hemp skin effect correction and formation condition capillary pressure curve conversion; a non-reservoir capillary pressure curve is removed from the pore throat distribution curve, reservoir classification features of the reservoir capillary pressure curve are obtained, classification preparation of the reservoir capillary pressure curve is achieved, and distance function construction of data standardization and reservoir classification feature parameters is completed; constructing a distance function of capillary pressure curve classification according to the parameters of the reservoir classification features, and performing clustering; and generating a classification result of each capillary pressure curve based on a clustering result of the distance function. According to the method, the most basic capillary pressure curve data is input, and multi-level reservoir classification is realized by integrating all the data of the capillary pressure curve.

The invention relates to a composite admixture for improving the dry shrinkage performance of alkali slag cement, and a preparation method and a use method thereof, and belongs to the technical field of building materials. The composite additive is prepared from the following components in parts by mass: 30 to 50 parts of potassium dodecyl sulfate, 30 to 50 parts of alkali slag, 10 to 20 parts of nano silicon dioxide, 2 to 6 parts of stearic acid and 15 to 25 parts of sodium lignin sulfonate. By reasonably preparing the components in the admixture and using amounts of the components and utilizing the synergistic effect of the components, the internal pore structure of an alkali slag cement test piece is remarkably improved, and the capillary pressure is reduced, so that the drying shrinkage phenomenon is reduced. In addition, the admixture almost has no adverse effect on the mechanical property of an alkali-activated slag cement test piece, the synthesis method is simple and convenient, the raw materials are easy to obtain, and the admixture has good industrial production prospects.

The invention relates to the technical field of functional composite materials, and discloses an anti-adhesion master batch for a biaxially oriented film and a preparation process of the anti-adhesion master batch for the biaxially oriented film, and the preparation process comprises the following steps: pre-mixing mesoporous silica with specific pore diameter, pore volume and particle size with homo-polypropylene particles, feeding into a co-rotating twin-screw extruder provided with a zero-pressure conveying area and a wide-gap kneading block, and extruding to obtain the anti-adhesion master batch for the biaxially oriented film. The melt temperature is controlled to be 230-270, and the rotating speed of a screw is adjusted so that the average retention time of the material can be within the range of 120-150 s. According to the preparation method, the melt viscosity is adjusted and controlled through an infiltration dynamic window, polypropylene chain segments are migrated into silicon dioxide pores through capillary pressure, the infiltration depth is limited, and a radial refractive index gradient transition layer is constructed on the peripheral side of the anti-blocking agent; abrupt change of phase interface refractive index is eliminated, visible light scattering is inhibited, and the technical problem of mutual restriction of anti-adhesion performance and optical transparency is solved.

The present invention discloses an efficient method for constructing and analyzing relative permeability curves of water-drive gas reservoirs. The method includes establishing a capillary pressure function relational expression; a gas-water relative permeability function relational expression; obtaining a normalized capillary pressure curve; obtaining the undetermined coefficients in the capillary pressure function relational expression and the gas-water relative permeability curve; calculating and comparatively analyzing the fitting errors of different capillary pressure function relational expressions and the differences in relative permeability curves calculated by different methods; and comparing and verifying the relative permeability curves indirectly calculated from the mercury injection experiment test results with the relative permeability curves obtained by direct experiment tests. The present invention has significant advantages and application values under the circumstances of great difficulty in laboratory relative permeability curve tests, high requirements for equipment, and insufficient current relative permeability curve test results. It can provide reliable basic relative permeability data for work in aspects such as water-drive gas reservoir engineering calculations, productivity prediction, and numerical simulation, and at the same time provide theoretical guidance for the indirect calculation of relative permeability curves of similar water-drive gas reservoirs.

The present invention provides a method, device, system, and medium for calculating shale oil saturation. The method uses interval porosity from nuclear magnetic resonance (NMR) logging data as a basis to determine the correlation between porosity after determining the interval porosity cutoff value and S1. The quality of the correlation indicates the amount of oil-bearing reservoir space. This method can serve as an indicator of shale oil content. This method addresses the unsuitability of conventional reservoir oil content evaluation methods for shale reservoirs, such as closed coring for saturation determination, logging saturation interpretation models based on rock physics experiments, and calculation of original oil saturation using capillary pressure curves. Accurately calculating the oil and gas saturation of shale reservoirs aids well logging evaluation of reservoirs and oilfield exploration and development. This method offers unparalleled advantages over other saturation models for calculating shale reservoir oil content, demonstrates significant practical application results, and is highly valuable for promotion.

The invention provides an asphalt pavement pit slot cold patching repairing method, and relates to the technical field of pit slot repairing, and the method comprises the steps: carrying out pit slot space cleaning on a pavement pit slot, carrying out pit slot boundary shaping based on a pit slot space cleaning result, determining a main body pressure bearing area, determining an edge load avoiding area based on the main body pressure bearing area, and carrying out layout adaptation confirmation on the edge load avoiding area. A sacrificial core arrangement position is arranged in an edge load avoiding area on the outer side of a main body pressure bearing area, the sacrificial core arrangement position is communicated with a low-position communication area and a lateral release area in a pit slot, and then a withdrawable sacrificial core is pulled away after a cold patch restoration body reaches an initial stable state, so that a hidden capillary pressure relief channel is formed; therefore, moisture, water vapor pressure and trace free water accumulated in the restoration body can be continuously released outwards, and the problems that after existing pit slot cold repairing, internal water vapor is not prone to being discharged, and stripping and secondary damage are prone to being caused are solved.

The invention discloses a method for designing and calculating the width of a sealing surface of a mechanical seal. The method comprises the following steps: S1, acquiring end surface morphology parameters, working condition parameters, the inner diameter of the sealing surface and interface parameters of a dynamic ring and a static ring of the mechanical seal; s2, determining the wettability of the dynamic and static ring sealing surfaces according to the sealing surface interface parameters of the dynamic and static rings; s3, determining the maximum height of the dynamic and static ring contact interface gap according to the end surface morphology parameters of the dynamic and static rings; s4, determining the capillary pressure of the contact interface of the dynamic and static rings according to the sealing surface interface parameters of the dynamic and static rings; s5, establishing a mechanical equilibrium equation in the capillary gap of the contact interface of the dynamic ring and the static ring; and S6, calculating the width of the sealing surface according to a mechanical equilibrium equation and the inner diameter of the sealing surface. The problem that the sealing face is too wide or too narrow due to the adoption of an empirical mode can be effectively solved, the capillary effect of the sealing face can be fully played under the reasonable sealing width of the mechanical seal, the leakage suppression effect is achieved, leakage is avoided, and the sealing performance of the mechanical seal is improved.