8 results about "Drainage time" patented technology

The present application relates to the technical field of coal mine floor aquifer drainage and pressure reduction, and particularly relates to a water pressure drop range and drainage time prediction method applied to underground porous water drainage. The method comprises the following steps: delineating a water-rich abnormal area by multiple means; obtaining the target area's water conductivity and elastic water release coefficient based on group-hole water drainage test data; arranging control points around the working face, especially at places where the aquiclude is relatively thin, calculating the apparent water inrush coefficient and determining the design water level drawdown; combining the water conductivity, elastic water release coefficient of each aquifer and the control point's design water level drawdown to predict the drainage time; reasonably arranging drainage holes in the water-rich abnormal area and establishing an underground multi-hole water drainage system; and further dynamically regulating the water drainage system operation by using the control point's design water level drawdown and drainage time. The present application can predict the drainage time in advance, optimize the construction schedule and improve the overall work efficiency.

The invention relates to a drainage method, which comprises the following steps: S1, initializing a mapping relation database of a drainage amount Q and a predicted time value T for reaching a gas-liquid two-phase drainage state, the predicted time value T being data less than and close to the time for reaching the gas-liquid two-phase drainage state; s2, obtaining the current required water displacement Qn, and obtaining a corresponding prediction time value Tn based on the mapping relation database; s3, the drainage pump is controlled to start drainage work according to the rated rotating speed V0; s4, when the drainage time reaches Tn, the rotating speed of the drainage pump is controlled to be reduced; and S5, the drainage power W of the drainage pump is calculated in real time, when W is smaller than W0, the drainage pump is controlled to stop working, and W0 is the preset emptying power value. The drainage method can realize more efficient and low-noise drainage control. The invention also relates to a storage medium in which a program for realizing the drainage method is stored, and an electric appliance applying the drainage method.

This invention relates to a drainage method and system for CPR1000 nuclear power plants after overhaul and refueling, comprising: performing drainage preparation; upon receiving a drainage command, activating a first drainage path to drain the reactor pool; real-time monitoring of the reactor pool's water level changes and the drainage status of the first drainage path, and acquiring monitoring information of the reactor pool; determining whether the conditions for simultaneous drainage by two pumps are met based on the monitoring information of the reactor pool; if the conditions for simultaneous drainage by two pumps are met, activating a second drainage path to drain the reactor pool; real-time monitoring of the reactor pool's water level changes and acquiring real-time water level information of the reactor pool; determining whether the conditions for switching from two pumps to one pump drainage are met based on the real-time water level information of the reactor pool; if the conditions for switching from two pumps to one pump drainage are met, closing the first drainage path and maintaining the second drainage path to drain the reactor pool. This invention, by employing a dual drainage path during a stage with very large drainage volumes, can significantly reduce drainage time, significantly improve drainage efficiency, and effectively shorten the overhaul period.

The utility model provides a drainage time prediction device for a small sedimentation tank, which comprises a connecting pipe, the top end of the connecting pipe is connected with a mounting pipe, and the top end of the mounting pipe is connected with a flow meter; the two ends of the connecting pipe are connected with first flange plates, the connecting pipe is connected with the butt-joint pipe through the first flange plates, and a sealing mechanism is connected between the butt-joint pipe and the first flange plates. The gap between the second flange plate and the first flange plate can be reduced, and the gap generated when the device is in butt joint with the butt joint pipe of the sedimentation tank is increased.

The invention discloses a drainage method for hydraulic engineering construction, and relates to the technical field of hydraulic engineering drainage. Comprising the following steps that hydrological data, construction progress information and drainage constraint conditions of a hydraulic engineering construction site are obtained, drainage demand analysis is conducted according to the hydrological data and the construction progress information in combination with the drainage constraint conditions, drainage target information is determined, a drainage algorithm to be used is obtained according to parameters of an initialized drainage algorithm, and the drainage algorithm to be used is used. And inputting the hydrological data, the construction progress information and the drainage constraint conditions into a drainage algorithm to be used to obtain an operation strategy of the drainage equipment. The hydrological data, the construction progress information and the drainage constraint conditions of the construction site are comprehensively obtained, the drainage demand analysis algorithm is combined, the drainage flow and the drainage time meeting the construction demand can be accurately calculated, and therefore the accurate drainage strategy is formulated, the drainage efficiency is effectively improved, and it is ensured that the construction progress is not affected by accumulated water.

To enable the acquisition of drainage construction methods that correspond to the drainage targets in the field. [Solution] The information processing device includes an acquisition means for acquiring target drainage volume, target drainage time, rainfall per unit time, and field images per unit time in a field where drainage work is to be carried out, and an estimation means for inputting the target drainage volume, target drainage time, rainfall per unit time, and field images per unit time acquired by the acquisition means as first input data to a trained model which has been trained to output drainage work information that can be carried out with the drainage target based on input data including the drainage target of the field, and performing estimation, and outputting drainage work information corresponding to the obtained first input data.

The invention relates to the technical field of polder area drainage, in particular to a drainage scheduling method and system for a polder area drainage pump station and a storage medium, and the method comprises the steps: obtaining a to-be-drained area, and obtaining corresponding variable factor data and drainage pump station data according to the to-be-drained area; generating an estimated scheduling index according to the variable factor data and generating a flood drainage capacity index according to the flood drainage pump station data; comparing the pre-estimated scheduling index with a drainage capacity index, and judging whether the pre-estimated scheduling index is smaller than the drainage capacity index or not; if the estimated scheduling index is smaller than the drainage capacity index, generating a first scheduling scheme based on the preset consumption according to the drainage pump station data; and if the estimated scheduling index is not less than the drainage capacity index, generating a second scheduling scheme based on the preset drainage duration according to the drainage pump station data. The economic loss is reduced, the adaptability of the polder area flood drainage scheduling scheme of the pump station is improved, and accumulated water in the polder area is rapidly discharged.

This invention provides a drain pump control method, control device, washing equipment, memory, and processor. The drain pump control method includes: determining the total effective drainage time of the dehydration stage, wherein the dehydration stage includes a pre-dehydration stage and a main dehydration stage, and the main dehydration stage includes multiple different speed sub-stages; controlling the drain pump to operate according to a preset drainage rhythm during the pre-dehydration stage, wherein the drainage rhythm includes the ratio of the drain pump's on time to its off time per unit cycle; determining the current speed sub-stage based on the current speed gear during the main dehydration stage, determining the drainage rhythm of the current speed sub-stage based on the current speed sub-stage, the total effective drainage time, and the preset total dehydration time, and controlling the drain pump to operate according to the current drainage rhythm. In this invention, the drain pump starts and stops according to the drainage rhythm, which can be dynamically adjusted according to actual conditions to meet drainage needs and reduce the noise of the drain pump operation.