4results about How to "Adjust balance" patented technology

The utility model relates to the technical field of coating insulation test equipment, and disclose a kind of photodrum coating insulation resistance test equipment, including bearing plate, bearing plate upper portion is equipped with main controller, main controller upper portion is equipped with insulation resistance tester, bearing plate upper portion is equipped with two position adaptation's first fixed plate and second fixed plate, and the clamping unit for clamping the both ends of photodrum is equipped on first fixed plate and second fixed plate, and the drive motor for driving photodrum rotation is equipped in first fixed plate side.In the utility model, photodrum is driven to rotate by the output end of drive motor, photodrum can drive charging roller to rotate after rotating, opens insulation resistance tester, selects suitable voltage gear and resistance gear, after resistance stabilizes, it can read number record this stable value, and the value is the insulation resistance value of the coating of photodrum to be tested, to realize the effect that the surface coating of photodrum can be tested for insulation.

This invention relates to the field of oilfield chemistry, and discloses an oil displacement composition and an oil displacement agent, as well as their applications. The oil displacement composition comprises component A and component B, wherein component A has the structure shown in Formula I, and component B has the structure shown in Formula II; wherein R1 is a C1-C8 alkanol or a C6-C8 aromatic alcohol; PO is a polyoxypropylene segment; EO is a polyoxyethylene segment; m = 1-30; n = 1-15; Y ‑ R1 is an acid radical ion; M is an alkali metal or alkaline earth metal; R2 is a C1-C8 alkyl group or a C6-C8 aryl group. The oil displacement agent prepared from the oil displacement composition of this invention can be used in chemical oil displacement. This oil displacement agent is an ultra-low interfacial tension spreading type oil displacement agent, with simple composition, good solubility, and cost advantage. R1-O-(PO) m -(EO) n -Y ‑ M + Formula I; R2-OH Formula II.

This invention relates to an enzymatically hydrolyzed protein composition as a substitute for fishmeal and its preparation method, belonging to the field of feed technology. The enzymatically hydrolyzed protein composition comprises the following raw materials: animal protease hydrolysate, brewer's yeast extract, bile acids, sodium butyrate, sodium selenite, and fructooligosaccharides. This application selects cricket powder and defatted mealworm powder as animal protein sources. Simultaneously, chitinase, alkaline protease, and neutral protease are used sequentially to enzymatically hydrolyze the cricket and mealworm complex. The cricket powder and defatted mealworm powder after enzymatic hydrolysis effectively eliminate anti-nutritional factors in the original insect feed, and have high protein utilization, effectively releasing nutrients and improving nutritional value. Based on this, brewer's yeast extract and bile acids are added for compounding, which synergistically promotes weight gain and growth in aquatic animals. Furthermore, this application uses sodium butyrate, sodium selenite, and fructooligosaccharides in combination, which effectively gives the prepared composition significant antioxidant effects from different dimensions.

This invention relates to the field of oilfield chemistry, and discloses a betaine compound, its preparation method, and its application. The betaine compound has the structure shown in Formula I: In Formula I, m = 1-30; n = 1-15; R1 is a C1-C8 carbon chain alcohol or a C6-C8 aromatic alcohol; R2 and R3 are each independently hydrogen or methyl; R4 is a C1-C3 alkylene or hydroxylated alkylene; M ‑ SO3 ‑ or COO ‑ The betaine compound contains a large number of PO groups, increasing the size of the hydrophobic groups. Betaine percolators containing this compound, through the synergistic effect of the PO groups and betaine molecules, transform the active components of crude oil into low-molecular-weight components (such as fatty acids), reducing the interfacial film strength of the betaine and thus improving the deformability of the emulsion. The betaine compound of this invention can be used as a betaine percolator for fracturing in low-permeability reservoirs, further improving oil recovery.