35results about How to "Implement Stratified Sampling" patented technology

Disclosed is a transmission network risk assessment method considering substation influence. The method includes the steps of first collecting reliability parameter data of a local power grid and eachsubstation internal component as well as basic parameter data of the substation internal relay protection; then establishing a Markov state model of the power grid and the substation internal components and a relay protection implicit failure model, and determining the probability of occurrence of the components and relay protection states; then sampling a system state by using an improved non-sequential Monte Carlo simulation method; and finally, analyzing the load loss risk of the system state by using a load shedding optimization model based on the DC flow, calculating a risk index of thetransmission network and assessing the risk of the transmission network according to the risk index. The method in the invention can reflect the influence of the substation on the risk assessment of the transmission network to the greatest extent, further improves the accuracy and real-time performance of risk assessment under the premise of meeting the calculation precision, and can provide a reliable basis for power grid operators to understand the real-time risk of the power grid.

The invention discloses a sampler for undisturbed soil, and belongs to the technical field of soil sampling. The sampler comprises a rotating handle, sample storage barrels and a sampling drill bit, wherein the bottom end of the rotating handle is connected with a sample storage barrel mounting base; the sample storage barrels are mounted in the sample storage barrel mounting base; the sampling drill bit is detachably connected to the bottom end of the corresponding storage sample barrel; a plurality of the sample storage barrels are arranged; the plurality of the sample storage barrels are detachably connected up and down in sequence; the sampling drill bit is arranged at the bottom end of the bottommost sample storage barrel. The plurality of the sample storage barrels are arranged; through adjusting the quantity of the sample storage barrels, a length of the whole sampler can be adjusted; the soil at a different depth can be sampled; the stratified sampling is realized; the sample storage barrels can also have different lengths; the length of the sampler can be more flexibly adjusted, and the stratified sampling can be further better realized.

The ecological domestic garbage landfill reactor includes the first stainless steel frame with reactor, micro computerized time controller, aeration pump, glass rotor flow meter and precise peristaltic pump; the second stainless steel frame with exhaust liquid collecting bottle and gas collecting bottle; percolate regulating water tank, percolate collecting tank and simulating rainwater tank below the first frame. The micro computerized time controller is connected with the aeration pump, the glass rotor flow meter, the percolate regulating water tank, the precise peristaltic pump and the reactor; the percolate regulating water tank is connected to the reactor, percolate collecting tank and the imulating rainwater tank; and the reactor is connected to the sampling battle, the exhaust liquid collecting bottle, the gas collecting bottle and the control valve. The present invention can realize laminated sampling and instantaneous gas sampling in simple operation and high volumetric measurement precision.

The invention discloses an artificial wetland miniature simulation test device for accurately grasping uniformly-collected water and an internal mechanism, consisting of a water distribution device, artificial miniature simulation test blocks (quadruple blocks) and filler filling and sampling columns, wherein the water distribution device distributes water to the artificial miniature simulation test blocks and can ensure that the concentration of raw water in four test block boxes is consistent and the water inlet flow can be controlled according to the design ratio; and the different water outlet flows can be adjusted by each drain pipe. The artificial miniature simulation test blocks are used for filling filler, planting plants and the like so as to stimulate the composition of the artificial wetland, wherein the water level of the artificial miniature simulation test blocks can be adjusted and water samples can be taken out from four blocks. The filler filling and sampling columns are arranged in the test blocks (a plurality of sampling columns can be arranged in each test block) so as to realize the layered sampling of the filler. The artificial wetland miniature simulation test device can be used for investigating the parameter design and the treatment effect of the vertical current artificial wetland and designing and optimizing the vertical current artificial wetland and can realize the four-level simulation comparison of certain parameter under the same filler condition, the simulation comparison of four fillers under the same parameter condition as well as the layered sampling of the fillers.

The invention discloses a tidal wetland soil interstitial water in-situ layered collecting and filtering device, which comprises an equipment embedding system, a water sample layered collecting system, and a water sample pumping and collecting system. The provided collecting and filtering device guarantees the efficiency and quality of wild in-situ soil interstitial water sample collection, has the characteristics of simple manufacturing, low cost, and high performance/cost ratio, and assists the researchers and environmental scientists to carry out wild in-situ soil interstitial water sample layered collection and filtering.

The invention relates to a layered sampling apparatus and method for an ice cover. The layered sampling apparatus comprises a sampling part and a force applying part. The sampling part comprises at least one ice body sampling box which comprises an ice storage box with hollow interior and an ice guiding groove; an opening in the first end of the ice guiding groove is communicated with the ice storage box, another opening in the second end of the ice guiding groove is located at the outer side of the ice storage box, and the opening in the second end of the ice guiding groove is provided with ice breaking teeth protruding out from the ice guiding groove; the ice storage box is also provided with a rotation hole penetrating the ice storage box; the force applying part comprises a rotary rod which passes through the rotation hole and drives the ice body sampling box to rotate; the shape of the rotary rod matches with the shape of the rotation hole; and a locking block is arranged on the end part of the rotary rod. The layered sampling apparatus is easy to operate, convenient to use and small in size; moreover, the apparatus can be assembled on site, which facilitates transport of the apparatus.

The invention discloses a rapid lake water quality sampling and detecting method, and belongs to the technical field of lake treatment. According to the method, a rapid water body sampling device samples a water body of a water area to be detected, a collected water body sample is processed, the processed water body sample is detected, and an obtained detection result is compared to obtain accurate water quality information. Thus, various accurate detection is carried out on a lake water source, chemical pollutants causing water pollution are rapidly monitored from the aspects of different pollutants, support is provided for establishing a rapid emergency response and early-warning system, the water source is collected in different periods to obtain accurate water quality information, thewater source in different periods is further divided into samples at different temperature, the water quality of the water source in the area at different temperature can be detected, and the accuracyof water quality detection is effectively guaranteed.

The invention relates to a stratified sampling and stratified repair device for groundwater, and belongs to the technical field of environmental science and engineering. The stratified sampling and stratified repair device for groundwater comprises a well body, a sampling and repair unit and a rotary lifting device. A sampling and repair silo arranged in a well pipe can move up and down along the axial direction of the well pipe to any location in the well pipe, and stratified sampling and stratified repair of the groundwater at any depth to be achieved by controlling of the sampling and repair silo to a location to be sampled or repaired. The stratified sampling and stratified repair device integrates the sampling and in situ repair of the groundwater, and by connecting of ground water pumping equipment, air pumping equipment, gas injection equipment or drug injection equipment, groundwater sampling and monitoring, groundwater multi phase extraction repair, extraction processing repair, aeration repair, drug injection repair and other functions can be realized. The stratified sampling and stratified repair device for groundwater has the advantages of reasonable structure, simple operation and convenient operation, and has the multifunction of groundwater sampling and various technical repair.

The invention discloses an underground water single-tube pulse stratified sampling device based on a gas drive principle. A monitoring well is divided into a plurality of aquifers by packers. The stratified sampling device in each aquifer comprises a first flow guide pipe, a first tee joint, a first check valve, a second check valve, a third check valve, a first underground gas drive mechanism, afirst pressure release valve, a first pneumatic quick connector, a second pneumatic quick connector, a third pneumatic quick connector, a first underground flow storage container and a second filtering dialysis assembly. According to the invention, one-stop underground water sampling of different depths and different aquifers can be realized; high fidelity and representativeness of underground water samples in the sampling process are guaranteed through gas drive type work; two single-layer pipelines are reduced to one pipeline; the rated sampling layer number of the underground water stratified sampling device is doubled under the same condition; the integration capacity of an underground monitoring module is improved by reducing the number of the pipelines in a shaft and the occupied space; and therefore a physical space and a technical basis are provided for integrating the underground monitoring module.

The invention discloses a well pipe device and method for groundwater layered sampling. The device comprises a pipe body formed by connecting more than one well pipe end to end; multiple sets of through sieve holes are formed in the same heights of the side walls of the well pipe; each set of the sieve holes is longitudinally arranged; hollow annular clamping grooves are further formed in the inner wall of the well pipe; the upper arms and the lower arms of the clamping grooves are fixed on the inner wall of the well pipe; the upper arms are located above the sieve holes, and the lower arms are positioned below the sieve holes, so that the sieve holes are surrounded; openings are reserved in the side walls of the clamping grooves; water check valves corresponding to the multiple sets of the sieve holes are arranged in the clamping grooves; and an outer operating rod penetrates through the openings to be clamped with the water check valves, and the operating rod is transversely rotated,so that the water check valves can slide in the clamping grooves, and groundwater with different depths is introduced into the well pipe for sampling.

The invention provides a soil pollution stratified sampling device which comprises a sampling supporting frame, a driving assembly and a sampling drill, and the driving assembly is installed on the sampling supporting frame; the sampling drill comprises a drill bit and a sampling driving part, the drill bit is connected to the bottom of the sampling driving part, and the sampling driving part comprises a sampling bin, a sampling scraper, a gas spring and a sampling door; compared with the prior art, the sampling device has the advantages that a plurality of sampling bins are arranged at different positions above and below the sampling driving part to store and collect sampled soil layer samples with different depths, and the sampling scrapers in a normally open state and the sampling doors in a normally closed state are mounted on two sides of the sampling bins; when the sampling drill drills a soil layer clockwise, the sampling scrapers can be closed under the extrusion of the soil layer, when the sampling drill drills to a position needing sampling, the sampling scrapers can rotate anticlockwise to be pushed open by the gas springs to scrape and sample the soil layer, and the sampling scrapers with different depths scrape soil layer samples into the sampling bins where the sampling scrapers are located.

The invention provides a soil gas stratified sampler and a sampling and well washing method. The sampler comprises a sampling mechanism, well washing mechanism, a filter mechanism and a medium conveying hose, wherein the sampling mechanism is composed of a sampling main body, a sampling probe rod, a sampling probe, a plurality of connecting mechanisms and extension rods of which the number is twice that of the connecting mechanisms, the sampling mechanism is used for performing stratified sampling of soil and determining the optimal sampling time, the well washing mechanism is used for injecting a well washing medium from a sampling device, a medium in a shaft is carried to the ground, so that the process that the medium property in the wellbore meets the operation requirement is changed,the filter mechanism is arranged on one side in the sampling main body and is used for filtering the medium obtained by sampling, the filtered medium is conveyed into an analyzer to be analyzed and treated, the medium conveying hose is arranged between the sampling mechanism and the filter mechanism and used for conveying the obtained medium. The sampler is advantaged in that the sampler can be used for rapidly detecting concentrations of various gases in soil in a layered manner and can be used for carrying out water removal and dust removal on the gases, so subsequent analysis on the sampledgases is facilitated.

The invention discloses a testing system simulating bottom sludge pollution in-situ remediation. The system comprises a water tank, water quality analysis probes, a computer, a light source and a fan, wherein bottom sludge is arranged at the bottom of the water tank; a water sample is added above the bottom sludge; a sampling hole for sampling bottom sludge is formed in the sidewall of the water tank; the light source and the fan are arranged above the water tank and on one side above the water tank respectively; the water quality analysis probes are divided into at least two groups and arranged in a deep water area and a shallow water area of the water sample respectively; the water quality analysis probes are connected with a computer. The testing system simulating bottom sludge pollution in-situ remediation is capable of realizing non-disturbance stratified continuous sampling and capable of monitoring the water sample remediation effect and the change of the environmental conditions in real time, and is convenient, fast, accurate, reliable and the like.

The invention discloses a sampling device for modern agricultural soil detection. The sampling device comprises a sampling device body, wherein at least three groups of first electric push rods are symmetrically arranged on the two sides of the inner wall of the sampling device body; a soil cutting plate is fixedly connected with one ends, far away from the inner wall of the sampling device body,of the at least three groups of first electric push rods; at least three groups of second electric push rods are arranged on the other side of the inner wall of the sampling device body; one ends of the at least three groups of second electric push rods penetrate through an opening and are fixedly connected with a push plate at the end parts; a piston is arranged inside a soil storage cavity; a piston rod is fixedly connected with the upper surface of the piston; and the other end of the piston rod penetrates through the sampling device body and is provided with a hand cross bar. The samplingdevice drives the soil cutting plate by means of the first electric push rods to separate soil at different depths from one another, realizes layered sampling on the soil at different depths, drives apush rod by means of the second electric push rods to push out cut soil, and is convenient to take out soil in bulk.

The embodiment of the invention provides a model training method and device, a computer storage medium and equipment. The method comprises the steps of obtaining at least two sample data sets, wherein the difficulty ratios in sample data included in the at least two sample data sets are different; respectively training at least two preset models through the at least two sample data sets to obtain at least two training models; and carrying out model fusion on the at least two training models to obtain a target model. Therefore, by adopting the at least two sample data sets with different difficulty ratios, layered sampling of the sample data is realized, so that the prediction effect of the finally obtained target model can be improved; moreover, the at least two sample data sets are utilized to perform model training, and then the target model is obtained through model fusion, so that the generalization ability of the target model is improved.

The invention discloses an environment-friendly sampling device special for water body detection. A mounting shell is fixedly connected with a supporting plate, one end of a rack penetrates through the supporting plate, a first abutting block is fixedly connected with the rack, the lower bottom wall of the first abutting block makes contact with the upper surface wall of the supporting plate, a second abutting block is fixedly connected with the rack, and multiple collecting assemblies are evenly distributed on the mounting shell; a tooth-shaped piece is meshed with the rack, one end of a rotating shaft is fixedly connected with the tooth-shaped piece, the other end of the rotating shaft penetrates through the side wall of the mounting shell and is inserted into a water storage tank, one end of a baffle is hinged to the water storage tank, and a fan-shaped plate is fixedly connected with the rotating shaft; and the fan-shaped plate abuts against the baffle. By means of the structural arrangement, the environment-friendly sampling device special for water body detection is better in use effect, and the user experience is improved.

The invention provides a multi-directional accurate thickness measurement and sampling device for cold finger surface wax deposits. The device comprises a fixed support base, a support rod, a positioning cone, a clamping ring, a rotating support rod and a measuring cutter. The bottom end of the support rod is installed on the fixed support base; the clamping ring is fixed at the upper part of thesupport rod; and the clamping ring clamps a cold finger. The center of the bottom of the cold finger is abutted against the pointed end of the positioning cone installed on the fixed support base. Oneend of the rotating support rod is in sliding connection with the clamping ring and the other end of the rotating support rod is connected with the measuring cutter. Therefore, the cold finger havingthe surface with wax deposits is fixed and multi-directional accurate measurement and sampling can be carried out on the finger; and the accurate thickness measurement of cold finger surface wax deposits can be performed. Besides, reading reference is performed by a scale rule; and layered sampling of deposits with different thicknesses is realized.

The invention provides an experiment apparatus used for researching a technology for preventing and controlling the nutrition salt release of deposits. The experiment apparatus comprises: a prevention and control experiment container, wherein the sidewall of the prevention and control experiment container is provided with a sealable and closeable channel opening; a separation sheet being suitable for being inserted from the channel opening and being applied to the inner wall of the prevention and control experiment container; and a lifting mechanism arranged on the sidewall of the prevention and control experiment container and being suitable for driving the separation plate to rise to the top of the prevention and control experiment container. The experiment apparatus used for researching a technology for preventing and controlling the nutrition salt release of deposits can strictly simulate field environment conditions in order to solve the technical problem of lack of experiment apparatuses and methods used effectively simulating the prevention and control of modification materials on the nutrition salt release of the deposits in the prior art and to obtain the a complete modification material and deposits after the prevention and control experiment, and is good for researching the prevention and control process and mechanism of various modification materials on deposits, and the change conditions of the modification material and deposits after the experiment.

The invention discloses a sewage heavy metal stratified sampling method, which belongs to the field of environmental detection. The sewage heavy metal stratified sampling method comprises the following steps that S1, a proper amount of sampling balls are put into a to-be-sampled water body, the sampling balls sink to the water bottom under the condition that the gravity of the sampling balls is larger than buoyancy in the initial stage. According to the scheme, heavy metal in different water layers is absorbed through the buoyancy ball, the buoyancy ball gradually and equivalently releases the balancing weight according to the principle that calcium peroxide reacts with water so that the buoyancy ball can float upwards and suspend in the different water layers, stratified sampling is achieved, and the buoyancy ball enables the elastic sealing film to deform to different degrees through the pressing effect of water pressure at different depths; the elastic sealing film is punctured by the pricking needle with the matched length to enable sewage to enter so as to enable the polymer adsorbent to absorb heavy metals, the buoyancy ball can continuously absorb the heavy metals in different water layers, so that complete sampling information is obtained, and the buoyancy ball can automatically float upwards after sampling is completed so as to facilitate recovery and analysis, and is simple in structure, low in cost and easy to operate and use.