32results about How to "Meet the requirements of the standard" patented technology

The invention relates to the technical field of petroleum product physical property measurement, in particular to a method and a device for improving measurement for petroleum product saturated vapor pressure by utilizing the vacuum technology. The invention provides a novel design of measurement for the petroleum product saturated vapor pressure under full-automatic vacuum condition. Namely, through automatic control over clockwise rotation or anticlockwise rotation and two-in-one motion of up-and-down movement of a measuring section, self-control operation of a system valve, on-line full-automatic collection of petroleum products and parameters, and automatic monitoring on operational parameters under vacuum condition, the measurement of full automation, high fidelity and high accuracy for the petroleum product saturated vapor pressure under different temperatures is achieved.

The invention discloses a fire hose abrasion test device which comprises a connecting table, wherein a Y-direction guide shaft is arranged on the connecting table; a guide slide block A and a guide slide block B are arranged on the Y-direction guide shaft and are connected through a Y-direction moving cylinder; a support frame A is arranged on the guide slide block A; two fire hose supporting wheels are arranged on the support frame A; a first supporting plate is arranged on the guide slide block B; a second supporting plate is arranged on the first supporting plate; a grinding head support frame is arranged on the second supporting plate; an X-direction guide shaft is arranged on the first supporting plate; the second supporting plate moves along the X-direction guide shaft; an X-direction moving cylinder is arranged on the first supporting plate; a grinding head, a positioning wheel and a driving wheel are arranged on the grinding head support frame; center lines of the two fire hose supporting wheels are vertically symmetrical along a center line of the support frame. According to the device, the abrasion resistance of the fire hose can be conveniently tested on a testing machine, the device is high in structural reliability and convenient to operate, the working strength of an operator is reduced, and the testing accuracy is improved.

The invention discloses a candida stellatta protease preparation and a preparation method thereof, develops a novel strain for preparing the candida stellatta protease preparation, and belongs to the field of bio-engineering. According to the main technical scheme of the invention, the preparation method of the candida stellatta protease preparation comprises the following steps of: preparing a candida stellatta fermentation liquor by using candida stellatta, and adding a salt into the candida stellatta fermentation liquor to separate out candida stellatta protease; dissolving the candida stellatta protease in a buffer solution, dialyzing, and purifying to obtain a candida stellatta protease liquor; ultra-filtrating and concentrating the candida stellatta protease liquor to obtain a candida stellatta protease concentrate; adding an inorganic salt and an auxiliary material (carrier) into the candida stellatta protease concentrate, and mixing fully to obtain a mixture; and freezing and drying the mixture to obtain the candida stellatta protease preparation. The preparation method provided by the invention is low in cost, is environment-friendly, is suitable for large-scale industrial production of acid protease preparations, and the candida stellatta protease preparation prepared by adopting the preparation method has high activity and good stability.

The invention provides a quasi beta thermal treatment technology of a TC4-DT titanium alloy structural component, which can solve the current problem of non-uniform structure and mechanical property of the TC4-DT titanium alloy structural component subjected to quasi beta thermal treatment. The quasi beta thermal treatment technology comprises the following technological steps: firstly, performing two-phase region uniform preheating treatment on a TC4-DT titanium alloy structural forge piece, then, heating the preheated TC4-DT titanium alloy structural forge piece with the furnace, after achieving a temperature protection temperature, taking out the TC4-DT titanium alloy structural forge piece from the furnace, performing air cooling, and finally, performing annealing treatment. The quasi beta thermal treatment technology is characterized by drilling a load coupler inserting hole at the maximum effective thickness part of the TC4-DT titanium alloy structural forge piece, inserting the load coupler into the load coupler inserting hole, after the two-phase region uniform preheating treatment, heating the TC4-DT titanium alloy structural forge piece to T beta + 15 DEG C with the furnace, paying attention to the temperature of the load coupler during the furnace heating process of the TC4-DT titanium alloy structural forge piece, when the temperature of the load coupler reaches the phase transformation point transformation temperature T beta of the TC4-DT titanium alloy material, starting to perform heat preservation and timing, after performing heat preservation for 20-45 minutes, taking out the TC4-DT titanium alloy structural forge piece from the furnace, and performing air cooling.

The present invention discloses making process of fireproof inorganic door core and door leaf. The fireproof inorganic door core and door leaf is made with expended perlite 30 wt%, talcum powder 10 wt%, magnesia 20 wt%, magnesium chloride 20 wt%, urea formaldehyde glue 10 wt%, polyester glue 5 wt%, alum 3 wt%, potassium permanganate 1 wt%, and ferrous sulfate 1 wt%, and through mixing, hot pressing at pressure of 200-400 tons and temperature of 100-350 deg.c for 60-120 min. The fireproof inorganic door core and door leaf has high fireproof and heat isolating performance.

The invention discloses a copying aircraft external curved plane-shaped refueling lamp and relates to the technical field of LED. The copying aircraft external curved plane-shaped refueling lamp comprises a main body piece, an LED assembly, a lens assembly, an aircraft skin assembly and a driving assembly. The invention further discloses a making method for the copying aircraft external curved plane-shaped refueling lamp. According to the copying aircraft external curved plane-shaped refueling lamp, certain optical index requirements are satisfied, the structure is simple, the operation is convenient, the process making is fast, and the reliability is high; It is important that the refueling lamp is mounted on the internal side of an aircraft skin, and the light emitting surface of the refueling lamp is an aircraft skin curved plane simulated design and adopts a streamline design; and therefore, wind resistance (zero wind resistance) is avoided; and a diffuser designed by using specific optics can realize optical deflection without spot size loss so that a standard requirement is satisfied.