62results about How to "Satisfy process needs" patented technology

The invention is a single-acting sheet hydraulic test machine of variable border pressing force and press speed. It uses the displacement of the top slide block as the independent variable, according to the present working curve, uses the pressure and speed sensor to real-timely sample the pressure and speed data provide for the PLC to make close-loop control, which realize the continual variation of the border-pressing force within 150KN-1250KN and the adjustment of the press speed within 4-20 mm / s.

The invention relates to a double layer wine-storing tank, which includes an accessed nitrogen flushing system; the wine-storing tank is composed of two tanks with one superposes on the other, the volume of the upper wine-storing tank is larger than that of the lower wine-storing tank, and reinforcing structure is arranged between the two wine-storing tanks; the upper wine-storing tank and the lower wine-storing tank are respectively provided with an upper tank nitrogen-flushing pipeline and a lower tank nitrogen-flushing pipeline which have the pipeline function of charging and discharging nitrogen and the function of cleaning the tank; the nitrogen-flushing pipeline at the top of the upper wine-storing tank has a backflow prevention device used for preventing the wine flowing back to the pipeline so as to cause the bacterial infection; the upper tank and the lower tank respectively have an upper cooling honeycomb panel and a lower cooling honeycomb panel to increase the rigidity of the wine-storing tank. The invention has the advantages that the double layer wine fermentation tank can meet the technique requirement for the production of high-quality red wine, thus filling the domestic blankness; the using area of the workshop can be saved; the rigidity and stability of the wine tank can be guaranteed; the invention is convenient for the worker to operate and disassemble.

The invention discloses a self-adaptive range resistance test method comprising the following steps: S1. current Ia is piped onto a resistor so that voltage difference is formed on the two ends of the resistor, and a test range is arranged to be Vlim1; S2. voltage difference Va1 of the two ends of the resistor is measured under the current Ia; S3. current Ib is piped onto the resistor so that voltage difference is formed on the two ends of the resistor, and a new test range Vlim2 is arranged with Va1 as a base number, wherein Va1, Ib, Va1 and Ia meet that Vlim2 / Ib > / = Va1 / Ia; S4. voltage difference Va2 of the two ends of the resistor is measured under the current Ib; and S5. a resistance value of the two ends of the resistor is calculated and outputted according to Ib and Va2. Under the situation that voltage is ensured not to surpass the range, resolution in voltage measurement is enhanced, resistance measurement precision is enhanced, an error in a resistance test is reduced and technology demands are met.

The invention discloses a plastic pipeline electric smelting connecting piece of an electric heating element with a mesh structure and a preparing method of the connecting piece. The drum-shaped electric heating element is arranged in the connecting piece. The connecting piece is formed by resistance material strips and plastic strips with the same materials, and the resistance material strips and the plastic strips are arranged at equal space distance along the inner wall of the electric smelting connecting piece and are arrayed in a continuous n shape along the drum wall. The preparing method of the connecting piece comprises the following steps that 1) the resistance material strips of the mesh structure are prepared; 2) the surfaces of the resistance material strips of the mesh structure prepared in the step 1) are fixedly connected with the plastic strips with the same materials, the strips are rolled to form the drum-shaped electric heating element; 3) the drum-shaped electric heating element prepared in the step 2) is inserted into an injection mould, and injection moulding is carried out according to a conventional injection moulding technology to obtain a finished product. The electric heating element structure of the connecting piece is stable, according to the preparing method, conventional mechanical equipment is used, multi-specification pipeline connecting pieces can be prepared, a technology platform is provided for manufacturing an electric smelting connecting piece with the extra-large aperture, the welding temperature of the connecting piece can be kept at the needed temperature, and short circuits and disconnection are avoided.