10results about How to "Improve temperature adaptability" patented technology

The invention belongs to the technical field of chemistry, and particularly relates to a water-based stable transdermal preparation based on a structural nanoemulsion and a preparation method of the water-based stable transdermal preparation. 1% to 10% of a polyether block copolymer; 5%-20% of a co-emulsion; 0.1% to 15% of an active ingredient; and the balance of deionized water. Through a compounding system of an amino acid surfactant and a gemini surfactant and in combination with the synergistic effect of a specific polyether block copolymer, a nanoemulsion drug delivery system with a stable structure is constructed. Through a compound system of the amino acid surfactant and the gemini surfactant and by combining the synergistic effect of the polyether block copolymer, a nano-emulsion drug delivery system with a stable structure is constructed, and the nano-emulsion drug delivery system has good long-term storage stability and temperature adaptability, is not easy to layer and is uniform in particle size distribution.

The invention provides a fiber-optic gyroscope light source temperature control system and method. The system comprises a temperature acquisition module used for acquiring the light source working temperature of the fiber-optic gyroscope; the nonvolatile storage unit is used for storing a temperature control voltage calculation coefficient and a constant current control voltage calculation coefficient; the temperature control voltage calculation module is used for determining a temperature control voltage digital quantity according to the light source working temperature and the temperature control voltage calculation coefficient; the constant-current voltage calculation module is used for determining a constant-current voltage digital quantity according to the working temperature of the light source and the constant-current control voltage calculation coefficient; the dual-channel D / A conversion module is used for converting the digital quantity of the temperature control voltage into a temperature control preset voltage and converting the digital quantity of the constant-current voltage into a constant-current voltage; the temperature control module is used for setting a temperature control preset temperature according to the temperature control preset voltage and controlling a refrigerator in the light source so as to adjust the working temperature of the light source to the temperature control preset temperature; and the constant-current circuit control module is used for adjusting the driving voltage of a constant-current circuit in the light source into constant-current voltage. On the basis of the system, the working temperature range of the fiber-optic gyroscope can be obviously increased by combining the method.

The utility model relates to the technical field of resistors, in particular to an electronic equipment resistor suitable for a wide temperature range. The resistor comprises a resistor body, supporting assemblies are movably connected to the positions, close to the two ends, of the bottom of the resistor body, and protection assemblies are arranged between the outer wall of the resistor body and the two supporting assemblies. Through collaborative design of the protection assembly and the supporting assembly, the reliability problem of a traditional winding resistor in a wide-temperature and vibration environment is solved. The protection assembly adopts an alloy spiral ring to wind a resistor body, a gap is reserved to buffer thermal expansion and cold contraction, and material oxidation and resistance drift are inhibited; the spiral structure and the gap form an elastic buffer space, vibration energy is absorbed, and welding spot stress concentration is avoided. The supporting assembly is movably connected with the bottom of the body through an L-shaped honeycomb supporting plate, disperses vibration stress, adapts to size changes and is in flexible connection with the end in cooperation with fine adjustment of screws, and structural stability is guaranteed.

The low-temperature environment coil device field detection method belongs to the technical field of power equipment state monitoring and fault diagnosis, and solves the problems of invalidation of traditional detection methods, high misjudgment rate and difficulty of stable work of field instruments caused by nonlinear change of material characteristics of coil devices under extremely low temperature conditions. The low-temperature environment coil device field detection method comprises the following steps: under the environment temperature ℃, a wide-frequency pulse excitation is input to the coil device, and the instantaneous voltage, the instantaneous current and the surface temperature of the coil are synchronously collected; according to the collected data, the thermal disturbance energy quantum and the low-temperature self-healing impedance are calculated, the two characteristics are fused to generate the temperature health degree fingerprint dimensionless characteristic, and the temperature health degree fingerprint dimensionless characteristic is compared with the upper and lower thresholds of the low-temperature golden interval of the same type of device to determine whether the coil device has the turn-to-turn short circuit or the abnormal high thermal resistance fault of the joint.

The application relates to the technical field of fuel cell engine control, in particular to an anode control method and device of a fuel cell engine and a vehicle, wherein the method comprises the following steps: collecting an actual temperature of an environment currently where the fuel cell engine is located; in the case that the actual temperature is greater than or equal to a first preset temperature threshold and less than or equal to a second preset temperature threshold, acquiring a current power of the fuel cell engine; and generating a first hydrogen discharge action of exhaust anode waste gas according to the current power of the engine and / or a target humidity of a stack and a current humidity. Therefore, the problem that, in the prior art, a water distributor cannot be adjusted according to different working conditions and it is difficult to meet the humidity requirement of a stack membrane under different working conditions, thereby affecting the performance and service life of a fuel cell, is solved.

The invention relates to the technical field of road construction, and discloses a construction method of a low-carbon penetration type pavement structure, which comprises the following steps: heating aggregate, preserving heat, uniformly mixing the aggregate with polyurethane at normal temperature to uniformly disperse the polyurethane on the surface of the aggregate, carrying out curing reaction on the polyurethane to form an elastic network structure to be adhered between coarse aggregates, and after the polyurethane is cured, carrying out curing to obtain the low-carbon penetration type pavement structure. Uniformly spreading premixed cement paste on the surface of the cured mixture under set pressure, applying vibration through a vibratory roller to promote the cement paste to deeply penetrate into gaps of the mixture, filling the gaps among the mixture and wrapping the mixture. The composite pavement structure layer with high strength and good integrity is formed through tight locking and embedding of the aggregate and full permeation and wrapping of double cementing materials of polyurethane and cement paste, heavy traffic loads can be borne, polyurethane has hydrophobicity and forms a compact composite structure with the aggregate and the cement paste, water invasion can be effectively blocked, and the service life of the pavement is prolonged. And the risk of water damage can be reduced.

The invention belongs to the technical field of object carrying lifting platforms, and particularly relates to a large-stroke self-guiding rigid chain lifting type object carrying platform which comprises a guide rail frame, an object carrying platform body, a driving system, a control system and a safety protection device. The driving system comprises self-guiding rigid lifting chain systems symmetrically arranged on the two sides of the guide rail frame, the self-guiding rigid lifting chain systems are connected with the carrying platform through rigid chains, and the safety protection device comprises an anti-falling mechanism connected with the guide rail frame and the carrying platform. According to the large-stroke self-guiding rigid chain lifting type carrying platform, a self-guiding rigid lifting chain system is used for lifting the platform, and the problems that the lifting speed is low, the lifting height is limited, the environment is polluted due to hydraulic oil leakage, and the carrying platform is not suitable for the low-temperature environment are solved. And meanwhile, the lateral inclination and overload of the platform can be accurately controlled.

The invention relates to a four-axis unmanned aerial vehicle shell, in particular to a 3D-printed integrated porous structure four-axis unmanned aerial vehicle shell and a manufacturing method thereof. The shell is of a triple periodic TPMS lattice porous structure, and the triple periodic TPMS lattice porous structure is formed by permutation, combination and connection of a plurality of repeated TPMS basic units; in the direction from the fixed end to the free end of the vehicle arm, the TPMS basic units are gradually arranged according to gradient change, and the wall thickness of crystal lattices is gradually increased; the four-axis unmanned aerial vehicle shell is high in heat dissipation performance and has the excellent energy absorption characteristic, and the structural weight is further reduced; the light weight effect is remarkable while the protection performance of the shell is improved, and the structural strength and the light weight characteristic are both considered.

This invention belongs to the field of magnetic functional materials technology, specifically relating to an amorphous nanocrystalline ribbon and its preparation method. The amorphous nanocrystalline ribbon is composed of the following raw materials in the indicated mass percentages: Nb 5.6-6.5 wt%, Si 9.5-10.5 wt%, B 1-2 wt%, Cu 0.5-1 wt%, Co 0.1-0.2 wt%, Zr 0.05-0.1 wt%, rare earth elements 0.4-1.5 wt%, high-entropy oxide 0.5-1.0 wt%, with the balance being Fe. The high-entropy oxide is prepared by adding ferric chloride, cobalt chloride, nickel chloride, manganese chloride, and scandium chloride to diethylene glycol, heating and stirring under sealed conditions, followed by centrifugation, washing, drying, and calcination to obtain the high-entropy oxide. The amorphous nanocrystalline ribbon prepared by this invention exhibits high magnetic permeability, low coercivity, and high stability within the temperature range of -40℃ to +150℃.