2 results about "Double tongue" patented technology

The utility model discloses adjustable ground wire hook device relates to power transmission line safety appliance technical field, specifically includes double tongue tension type metal hook, male head, female head, insulating operating stick and ground copper wire, and the double tongue tension type metal hook is with male head through first screw fastening connection and constitutes first detachable assembly, and female head is with insulating operating stick through second screw fastening connection and constitutes second detachable assembly, and first detachable assembly is with second detachable assembly through male head and female head realizes detachable connection. The application can set up ground wire in different angles for various types of tower in power transmission line through adding adjustable device between ground wire hook and insulating operating stick, improves the close degree of ground wire setting, the qualified proportion, simultaneously, the function of its adjustment angle can reduce the displacement frequency of high altitude operation personnel on the transmission tower, reduces the operation risk, and protects the safety of operation personnel.

The invention discloses a manufacturing method of a double-baffle-tongue volute for a centrifugal pump and the double-baffle-tongue volute, and aims to provide the double-baffle-tongue volute for the centrifugal pump, which is used for improving the poor flow phenomenon of the centrifugal pump, improving the efficiency and the stability, optimizing the flow state of an internal flow field, reducing the energy consumption, reducing the pulsation characteristic and improving the performance of the centrifugal pump. According to the technical scheme, the manufacturing method is characterized by comprising the steps of integrated blank preparation, preliminary quality detection and finish machining, separation tongue gap detection, cooling, qualified product surface strengthening treatment, residual stress detection, bullet breakage rate detection and performance detection. And unqualified products can be found in time, the products which can be trimmed can be trimmed, the quality of the products is ensured, and the reliability and the stability of the products are improved. The invention is suitable for the technical field of centrifugal pumps.