9 results about "Environmental pressure" patented technology

The application is a kind of simulation field drilling experimental device and experimental method for hydrate drilling fluid, which comprises a multilayer experimental cylinder, a water depth environment simulation device, a drilling running device, a drilling fluid feeding device, a slurry returning device and a data acquisition system. The multilayer experimental cylinder comprises at least two cylinder sections, and each cylinder section is independently configured with rock layers to simulate various formation environments. The water depth environment simulation device injects pressure into the multilayer experimental cylinder to simulate the environmental pressure of water depth. The drilling running device simulates downhole drilling. The drilling fluid feeding device is used to circulate and inject drilling fluid into the multilayer experimental cylinder through a drill pipe and a drill bit. The slurry returning device is used to circulate and return the drilling fluid to the drilling fluid feeding device and evaluate the hydrate content in the returned fluid. The application simulates the temperature and pressure environment of offshore gas field with low temperature and high pressure in the laboratory experimental device, and sets different rock layer compositions and experimental conditions of hydrate content, which can optimize the formula of drilling fluid and reduce the risk of hydrate generation during drilling.

A non-submerged cavitation-erosion synergistic damage simulation device, system and method belong to the field of hydraulic machinery working condition simulation, including a sediment jet channel and a cleaning fluid channel in its periphery; high-speed sand-containing fluid is introduced into the sediment jet channel to form a central high-speed jet impacting the sample surface, high-speed cleaning fluid is introduced into the cleaning fluid channel to form a peripheral low-speed water curtain surrounding the central high-speed jet after being ejected from the annular steady flow pipe, and the peripheral low-speed water curtain impacts the sample surface to form a local liquid phase confining pressure zone together with the central high-speed jet. The present application not only realizes the true simulation of the actual working condition under non-submerged conditions, but also can adjust the flow and pressure of the cleaning fluid to adjust the cavitation number and cavitation collapse intensity around the high-speed sand-containing jet without changing the atmospheric environmental pressure, and quickly adjust the simulation test parameters.

1. Name of the product in this design: Multi-environment testing device. 2. Purpose of this design: To conduct high and low temperature environmental pressure tests and port accuracy tests on vehicle-mounted displays and controllers. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application belongs to the technical field of electric power robots. A transformer oil sample collection pressure dynamic adjustment control method and system are proposed. The flow characteristics are analyzed. Based on the real-time pressure and the environmental pressure difference, the oil density and the valve coefficient are combined to calculate the discharge flow. The feedforward-feedback composite control is executed. The pressure deviation is calculated and the instantaneous flow is estimated. The valve new opening degree instruction is output by using the adaptive control law containing the feedforward compensation term. The pressure mutation is actively inhibited. The multi-dimensional parameter online adaptive scheduling is implemented. The PID gain is dynamically adjusted according to the oil temperature and the oil type. The effective volume elastic modulus and the oil density are corrected. The application solves the problems of response lag and poor parameter adaptability of the traditional control, significantly improves the safety of the sampling process, and avoids the equipment damage caused by pressure impact.

This invention discloses a free positioning device and its control method, comprising: a housing with a flexible sealing structure at its open edge; a flexible seal for fitting against the surface to be positioned to form a seal, creating a sealed space between them; the flexible seal is directly or indirectly connected to the housing for transmitting pressure to the housing; and a fluid interface disposed on the housing for filling the cavity with pressurized fluid and maintaining the pressure state within the cavity after filling. When the device is pressed against the surface, pressurized fluid is filled into the cavity to form a high-pressure zone, creating a pressure difference between the high-pressure zone and the sealed space between the flexible seal and the surface. This pressure difference drives the flexible seal to press firmly against the surface to be positioned, achieving a secure fixation. After releasing the pressure, the device can be easily removed. This device actively controls the adsorption force by adjusting the fluid pressure within the cavity; the adsorption force is positively correlated with the fluid pressure. The housing isolates the external environment from the cavity, ensuring that the high-pressure state within the cavity is unaffected by external environmental pressure conditions. This device can operate in vacuum environments in space, high-pressure environments in the deep sea, and conventional environments on Earth. It is adaptable to a wide range of surface types, from smooth to rough, and can be integrated and installed as a functional component on other objects. This invention also provides a depth- and load-based intelligent pressure control method to achieve dynamic adjustment of the adsorption force.

The application relates to the technical field of raw material quality control, in particular to a raw material in-stock safety state evaluation method and equipment based on environmental fluctuation, which comprises the following steps: acquiring environmental sampling data of a warehouse site environment and stock ledger records of raw material batches; constructing evaluation segments of the raw material batches according to the environmental sampling data and the stock ledger records; calculating an environmental pressure index vector based on the evaluation segments; determining a prediction probability value based on the environmental pressure index vector; acquiring a historical evaluation segment set in a historical evaluation database, and calculating a historical abnormality proportion value according to the historical evaluation segment set; performing weighted fusion calculation based on the prediction probability value and the historical abnormality proportion value to obtain a comprehensive risk score, and determining the risk grade of the raw material batches according to the comprehensive risk score. The application has the effect of reducing the loss risk of raw material quality degradation caused by environmental fluctuation.

The process of washing surfaces using fluids is carried out in various ways. Despite the wide variety of equipment and tools available in this field, washing models are generally based on the use of a significant volume of water or fluid at a specific temperature and at normal ambient pressure, or the use of a very large volume of water vapor or fluid under high pressure and temperature, instead of using a stream of water or fluid. In this invention, an innovative and complex multifunctional system is presented that uses five different techniques to purposefully manipulate and engineer the intermolecular interactions of water molecules or any other suitable fluid that has cleaning and disinfecting effects on various surfaces. This device facilitates and accelerates the process of removing water or fluid flow from a surface by purposefully changing and manipulating the boiling point of the fluid through these five techniques. In addition, it minimizes the time required to dry the surface as well as the destructive, erosive, and oxidizing effects of the fluid on the surface.

The application belongs to the technical field of air lock. The air lock inlet and outlet air pressure adjusting method comprises an air lock, characterized in that the adjusting method comprises: the air lock inlet and outlet are correspondingly provided with a first air path and a second air path; the air lock inlet pressure set value is P 进设 ; the environment pressure outside the air lock is P 环境 ; the air lock inlet pressure P 进 and the outlet pressure P 出 are detected; the air lock inlet pressure P 进 is adjusted by the first air path, so that P 进设 ≥P 进 ≥P 环境 ; the air lock outlet pressure P 出 is adjusted by the second air path, so that P 出 ≤P 进 . The application is used to solve the technical problems that the air lock inlet and outlet air pressure appears abnormal condition, resulting in reduced production capacity or no discharge. The application also discloses a device for realizing the air lock inlet and outlet air pressure adjusting method.