7 results about "Pressure system" patented technology

The application discloses a device and method for removing offshore wind power steel pipe piles under deep water conditions, which comprises a supporting device and a counterforce device, a hydraulic jack is installed between the supporting device and the counterforce device, the supporting device is used for providing jacking support force for the hydraulic jack, and the counterforce device is used for providing jacking counterforce for the hydraulic jack after being fixedly connected with a steel pipe pile to be removed. The device is simple in structure, does not need to use a high-pressure system during construction, greatly reduces construction difficulty, has little influence of the environment on construction during construction, does not need to consider the influence of the rising and falling tides on construction during the whole construction process, is convenient for construction progress management and control, and can greatly shorten the construction period.

The invention provides a weather situation identification method and device based on high and low pressure, equipment and a medium. In the weather situation identification method based on high and low pressure, the zero isoline and the jump point are extracted from the air pressure difference matrix, the affiliation zero isoline of the jump point is determined through the distance from the jump point to the zero isoline, and the zero isoline, the jump point and the affiliation isoline of the jump point are used to determine whether the point location to be detected belongs to the high-pressure system or the low-pressure system. According to the invention, the weather situation automatic identification based on high and low voltages can be realized, and the accuracy and reliability of the weather situation identification based on high and low voltages are improved.

The application relates to the field of deep-sea geological exploration, in particular to a deep-sea geological columnar sampling system. The control logic of the control module is as follows: if the received resistance signal is lower than a first preset threshold value, the vacuum negative pressure system is controlled to operate at a preset basic power; if the resistance signal reaches the first preset threshold value or is between the first preset threshold value and a second preset threshold value, the output power of the vacuum negative pressure system is dynamically increased according to the value of the resistance signal; and if the resistance signal reaches or is higher than the second preset threshold value, a closing instruction is sent to the vacuum negative pressure system. The application improves the defects that the existing penetration kinetic energy is insufficient, the penetration depth is shallow, the sample is shortened, sampling fails, part of the improvement scheme introduces a piston to form a negative pressure in the tube, but the negative pressure strength is limited, the action time is short, and the real-time sensing and self-adaptive adjustment ability of the penetration resistance is lacked, so that the high-efficiency and controllable sampling in the medium-hard sediment layer cannot be realized.

The invention belongs to the technical field of electric power weather forecasting, and discloses a power grid cold-wave process risk forecasting method and system based on weather analysis, and the method comprises the steps: carrying out the recognition and quantification of a high-voltage system, a slot line, a frontal surface and a torrent in a cold-wave process, and obtaining a recognized and quantified key weather system; based on the identified and quantified key weather system, quantifying the evolution characteristics of the cold wave system by using a mathematical model; coupling the quantized evolution characteristics of the cold-wave system with spatial information and vulnerability parameters of a geographic information system of a power grid facility, calculating a risk index through grid overlay analysis, and performing process risk assessment; and generating a dynamic evolution graph and a graded early warning graph for the power grid facilities based on the procedural risk assessment result. By providing more accurate, quantitative and procedural risk assessment and early warning, the loss of the power system caused by cold waves is reduced to the greatest extent, and the reliability of power supply is guaranteed.

The application relates to a high and low pressure system identification and tracking method, equipment and medium in a weather situation map, and belongs to the technical field of weather situation identification. Multi-source meteorological data is collected, and an isogram dataset is constructed based on the multi-source meteorological data; a closed isogram in the isogram dataset is extracted, the high and low pressure properties of each closed isogram are determined through a high and low pressure system identification model; the minimum circumscribed rectangle of the closed isogram is calculated; all the closed isograms are traversed, it is judged whether the minimum circumscribed rectangle is contained by the minimum circumscribed rectangle of other isograms, the outermost closed isogram is determined, and a set U is formed; a hierarchical high and low pressure system model is established based on an N-ary tree structure, and the coverage range and the influence area of the high and low pressure system are calculated based on the N-ary tree hierarchical structure, so as to assist in meteorological prediction. The application does not require a large amount of prior training data, has good interpretability, and solves the problems of limited identification and lack of identification ability for specific high and low pressure weather situations.

The invention relates to the field of ship and underwater vehicle sealing, in particular to a deep sea submersible rudder shaft sealing accelerated life test and test device which comprises a pressure system, a driving system, a monitoring system and a control system. The pressure system is used for providing basic conditions required by the test and test, and the basic conditions comprise pressure, temperature, load and torque; the driving system is connected with the pressure system and is used for providing a test and a driving force required by the test; the monitoring system is connected with the pressure system and is used for monitoring a test and basic conditions required by the test; and the control system is respectively connected with the pressure system and the driving system and is used for integrated control of the test and test device. According to the invention, the complex working conditions of high pressure, low temperature, medium particle and salinity, speed change, extra load and torque of the rudder shaft seal are comprehensively simulated, and the accelerated life test and test of the rudder shaft seal of the deep-sea submersible vehicle under the complex working conditions can be realized.

The application is a kind of test device and method for grouting reinforcement under high pressure and water environment. It includes water injection and pressure system, sample loading system, grouting system, constant temperature control system and recording system. The sample to be grouted is placed in the sample loading system, and the sample loading system applies pressure to the sample during grouting to simulate the overburden pressure. The water injection and pressure system is nested outside the sample loading system and is sealed. The water injection and pressure system adjusts the water pressure, changes the water flow speed and direction to simulate the influence of water flow on the grouting effect of the sample under the dynamic water environment. The grouting system is connected to the sample loading system and is used for injecting grout. The constant temperature control system is used to simulate the influence of temperature change on the grouting effect. The recording system is used to record the trend of grout escaping with water flow during grouting. The application can highly restore the high pressure and water environment under complex geological conditions, and significantly improve the accuracy and reliability of the grouting reinforcement simulation test.