36 results about "Erosion surface" patented technology

The present application includes a rotor blade having an erosion protective coating, the coating being a cermet material configured to protect against erosion during the operation of the rotor blade. Further, the present application includes a method of selectively applying the erosion protective coating, a method of selectively repairing / reapplying the erosion protective coating, and a process of developing an erosion surface model map of an optimized erosion protective coating pattern and thickness.

The invention relates to an oil-gas subsea pipeline silt carrying capacity online monitoring device and method based on bridge balance. The device comprises a first branch pipe, a second branch pipe, an electric rotation device, a transmission shaft, a support shell, sensing elements, a constant-voltage power supply system, a data acquisition system, an one-chip microcomputer, and a computer. The pipeline is provided with a through hole, the support shell is vertically inserted into the pipe through the through hole; the first branch pipe is fixed on the through hole and is connected to the second branch pipe; the electric rotation device is fixedly arranged on the top of the second branch pipe, the output shaft of the electric rotation device is fixedly connected to the top of the support shell through the transmission shaft; four lateral surfaces of the support shell are four erosion surfaces, a sensing element is fixed on each erosion surface; four sensing elements form a balance bridge; the voltage-constant power supply system supplies power to the balance bridge under a constant voltage (U) through the data acquisition system, the data acquisition system is used to collect the balance bridge output signal u(t) and send the signal u(t) to the one-chip microcomputer and computer in real time; and finally the computer can obtain the amount of sand discharged from the subsea pipeline according to the change of the signal u(t).

The invention, which belongs to the technical field of oil exploration and development, relates to an identification method of a denudation plane valley oil reservoir. According to the method, a denudation plane seismic horizon and a reference seismic horizon are generated by tracking, the reference seismic horizon is used as a datum plane to execute flattening processing, the denudation plane seismic horizon is restored to an ancient landform state, and a valley position is determined; frequency spectrum decomposition data are extracted from a curved surface parallel to the denudation plane in a same-phase shaft range where the denudation plane is located and mixed displaying is carried out on energy at three different frequency bands; frequency ranges and energy weights of the three frequency bands are adjusted and a frequency combination graph fitting the drilled well oil reservoir situation is screened; and the frequency combination graph covers a three-dimensional visualized graph displayed at the denudation plane ancient landform and a possible oil reservoir region is identified in the valley. The provided method is simple and is easy to implement; and the identification rate of the oil reservoir can be effectively improved. The method is especially suitable for the landform whose stratum filling in the shallow valley is thin at the denudation plane.

The invention relates to a manufacturing method of a medium-high pressure chemical foil, and the manufacturing method comprises pretreatment on an aluminum foil which is subjected to erosion surface expansion and multilevel formation treatment. The pretreatment comprises the following steps of carrying out infiltration treatment on the aluminum foil which is subjected to erosion surface expansionin a wetting disperse liquid, wherein the wetting disperse liquid is a water solution of a non-ionic surface active agent of which the hydrophilic-lipophilic balance (HLB) value is at 11-15. The manufacturing method of the medium-high pressure chemical foil in the invention can be capable of generating a stable oxidation film, meanwhile, and reducing the loss brought by the follow formation on the formed specific area of the aluminum foil, thereby improving the electrostatic capacity and water-tolerant performance of the aluminum foil.

To provide an erosion characteristics database and a method for constructing the same, an erosion prediction method and an erosion prediction system using the database for predicting a widespread erosion amount of a fluid machine or the like in a short time without the need for an operation of a model machine or an actual machine.A method for predicting erosion of a fluid machine surface due to cavitation, the method including: calculating erosion intensity distribution in each area of the fluid machine surface from cavitation flow field characteristics obtained using cavitation CFD in a flow path formed by the fluid machine; determining radius distribution and center position distribution of a representative sphere and the number of shape deformations by the representative sphere for assuming an erosion surface having a porous surface property based on the erosion intensity distribution; determining a fluid machine surface to be predicted as an approximate erosion surface; and calculating a shape after deformation of the approximate erosion surface based on the radius distribution and the center position of the representative sphere and the number of shape deformations by the representative sphere.

The invention discloses a bionic erosion-resisting pipeline elbow. Bionic ribs are evenly distributed on the erosion surface of the pipeline elbow, the spreading direction of each bionic rib is arranged in the flow direction, and the characteristic curve of the contact curve surface of each bionic rib and a flow field is a minor arc or a semicircle; alternatively, the spreading direction of each bionic rib perpendicular to the incoming flow direction, and the characteristic curve of the contact curve surface of each bionic rib and the flow field is two externally tangent arcs. The bionic rib structure of the bionic erosion-resisting pipeline elbow is the main position eroded by solid particles, the position is higher than the wall surface by a certain distance, and namely the thickness of the elbow is increased locally. The bionic ribs effectively control the near wall region flow field of a multiphase flow, so that the impact angle between the solid particles and the wall surface is controlled, and the wall surface of the pipeline elbow is effectively protected from the flow field control angle.