8results about How to "No destabilization" patented technology

The application provides a multi-port electric-hydrogen coupling energy router control method, medium and system, belongs to the technical field of multi-port electric-hydrogen coupling energy router control, and is based on an enhanced electrochemical model to correct hydrogen production efficiency of an alkaline electrolytic cell online, dynamically issues a virtual impedance parameter to each port output impedance according to a bus voltage stability evaluation value, inputs the corrected hydrogen production efficiency and a power prediction value into a rolling horizon multi-working condition switching optimization algorithm based on Lyapunov stability constraint to output a power instruction and a working condition switching instruction, issues a running mode instruction and a power instruction to each port converter according to a corresponding control strategy of the working condition, and the converter level executes current inner loop control, PQ calculation and PWM phase shift control, so that the technical problem that the multi-port electric-hydrogen coupling energy router is caused to be unstable due to multi-port power voltage strong coupling oscillation in the multi-working condition switching process is solved.

The invention discloses a polyacrylamide aqueous dispersion as well as a synthesis method and application thereof, and relates to the technical field of polyacrylamide synthesis. The synthesis method of the polyacrylamide aqueous dispersion comprises the following steps: carrying out a reaction I on a reaction system of acrylamide I, a cationic monomer I, an inorganic salt, a stabilizer, an easily hydrolyzable acrylate monomer and an initiator I to obtain the polyacrylamide aqueous dispersion; wherein the stabilizer is a cationic copolymer of a polyacrylamide chain segment; the prepared polyacrylamide aqueous dispersion has excellent stability, and destabilization does not occur after the polyacrylamide aqueous dispersion is placed at room temperature for more than 6 months.

The invention discloses a method for preparing a fibrous membrane from supercritical CO2, and relates to the technical field of plant extracts. The invention provides a method for preparing a fibrous membrane from supercritical CO2, which comprises the following steps: S1, mixing pretreated peony residues and wall materials, and carrying out supercritical CO2 treatment to obtain a mixture A; the pressure of the supercritical CO2 treatment is 7 to 13 MPa; the temperature of the supercritical CO2 treatment is 25 to 50 DEG C; and S2, carrying out electrostatic spinning on the mixture A, collecting fibers, and freeze-drying to obtain the fiber membrane. The supercritical CO2 process provided by the invention can overcome the problems of lengthy process, solvent residue, resource waste, poor spinning performance and the like, and realizes synergistic integration of essential oil extraction and residue-based functional fiber preparation.

The present invention relates to a battery temperature monitoring system and method, the system comprises a battery, a battery detection device, a power supply monitoring server and an infrared thermal imaging camera for detecting the battery temperature, the infrared thermal imaging camera is connected to the power supply monitoring server via a switch, the input end of the battery detection device is connected to the battery, the output end of the battery detection device is connected to the power supply monitoring server via a switch, and the power supply monitoring server determines whether the current battery temperature is within a normal alarm threshold range according to the current state of the battery and the acquired temperature information. The present invention uses an infrared thermal imaging camera to detect the battery temperature in all directions, and can timely detect the high temperature fire caused by leakage at different shell positions of the battery, and the detection means should be safe and reliable, not destroy or affect the stability of the connection between the batteries, not aggravate the self-discharge of the battery, and have high alarm accuracy.

The application discloses a postoperative rehabilitation abdominal bandage intelligent pressure regulating method and system, relates to the technical field of abdominal bandage intelligent pressure regulating, and comprises the following steps: wearing an intelligent abdominal bandage on a patient after abdominal surgery is completed and selecting a corresponding postoperative rehabilitation mode, loading target pressure parameters and completing initialization setting according to the postoperative rehabilitation mode; continuously collecting the pressure state of each region of the abdomen through a pressure collecting unit in the abdominal bandage, forming real-time pressure data, comparing the pressure data with a target pressure range, judging the current pressure state and generating a pressure regulating instruction; and adjusting the overall tightness state through the pressure regulating structure of the abdominal bandage according to the pressure regulating instruction, so that the abdominal pressure gradually reaches the set interval. Through intelligent closed-loop pressure regulation based on real-time pressure feedback, the application realizes dynamic and accurate control of the overall and local pressure of the abdominal bandage, and effectively improves the safety, stability and rehabilitation effect of postoperative abdominal support.

The invention discloses a polyacrylamide aqueous dispersion as well as a synthesis method and application thereof, and relates to the technical field of polyacrylamide synthesis. The synthesis method of the polyacrylamide aqueous dispersion comprises the following steps: carrying out a reaction I on a reaction system of acrylamide I, a cationic monomer I, an inorganic salt, a stabilizer and an initiator I to obtain the polyacrylamide aqueous dispersion, wherein the stabilizer is a binary mixture of a cationic copolymer containing a polyacrylamide chain segment and polyoxyethylene; the prepared polyacrylamide aqueous dispersion has excellent stability, and destabilization does not occur after the polyacrylamide aqueous dispersion is placed at room temperature for more than one year; the paint can be stored in an environment of-10 DEG C or above, and when the temperature recovers to 2-40 DEG C, the paint can be continuously kept stable.

The invention discloses a multi-cable coupling wave propulsion system based on a rigid wing array and a geometric self-stabilization mechanism. According to the system, a vertical stable reference is obtained through a large-scale water surface frame, a main propulsion wing array is rigidly integrated on the system, and efficient and direct conversion of wave kinetic energy is achieved. A unique four-rope parallelogram mechanism is connected with a low-gravity-center underwater load module to form a geometric self-stabilization system with intrinsic posture recovery capability, so that rolling and pitching are greatly inhibited. The propulsive force of the system is stably transmitted through the quasi-rigid mechanism, and the low-efficiency mode that a traditional wave glider depends on oscillation pulling is eliminated. The core improvement lies in that an active navigational speed controller based on underwater airfoil attack angle adjustment is introduced, and navigational speed closed-loop accurate control is achieved through fine adjustment of system internal force balance. The problems that a traditional wave energy platform is low in efficiency, unstable and uncontrollable in navigational speed are solved, and a self-sustaining wave propulsion solution which is high in stability, long in endurance, intelligent and controllable is provided.

The utility model relates to the technical field of geological detection, in particular to collapsible loess stratum deep hole detection equipment which comprises a first telescopic rod, a reciprocating screw rod is rotatably connected in the first telescopic rod, a motor is fixedly connected to the top of the first telescopic rod, and the output end of the motor is fixedly connected with the reciprocating screw rod. And one side of the first telescopic rod is fixedly connected with an air outlet pipe, and the outer surface of the air outlet pipe is fixedly connected with a first valve. The soil sampling device has the advantages that due to the friction force between the second arc-shaped plate and the soil, the soil does not fall off when rising in the sampling rod, the pressure is reduced through the first spring, the situation that the soil is internally deformed and the stability of the soil is affected due to the fact that the pressure is too large is prevented, the soil can be more easily ejected out due to the gaps, and the soil sampling device is convenient to use. The pressure on the soil is reduced, and a worker takes out the soil from the sampling tube through a part of ejected soil, so that the soil can be conveniently taken out, and the stability of the soil is not damaged.