9results about How to "High pressure" patented technology

The utility model relates to the technical field of transition section pipeline connection, specifically is a kind of pipe network construction transition section pipeline connection structure, including transition pipe, the both sides of transition pipe are fixedly installed with connecting assembly, and the one end of transition pipe is fixedly installed with first pipeline body by connecting assembly, and the other end of transition pipe is fixedly installed with second pipeline body by connecting assembly, and connecting assembly includes two access pipes, and two the access pipe is fixedly installed at the both ends of transition pipe;The utility model installs transition pipe between two caliber different access pipes, when working, fluid passes through first pipeline body, and when fluid is guided under the conical inner wall of transition pipe, gradually increase the flow rate of fluid, avoid the flow rate and pressure fluctuation of excessive in short time, produce greater pressure to the connecting area between first pipeline body and second pipeline body, to protect the connecting area, improve the service life of connecting area.

The utility model discloses a safe high temperature resistant silica gel cable, comprising an inner support sleeve; the beneficial effects of the utility model are that the insulation performance of the cable and the protection capability of the outermost part are further improved by adopting the cross-linked polyethylene insulation material as the silica gel insulation layer and the polyvinyl chloride material as the wear-resistant layer; by means of the structural design that the reinforcing strips are fixedly connected to the outer side of the inner supporting sleeve at equal intervals and the inner fixing sleeve and the inner supporting column are fixedly connected to the inner side of the inner supporting sleeve, the mechanical strength of the cable is remarkably improved, larger tension, pressure and bending stress can be borne, and the cable has good insulation performance and high-temperature resistance through the arrangement of the silica gel layer and is suitable for being used in the field of communication. And the core wire can be protected from being influenced by high temperature and electromagnetic interference.

A method for concentrating an aqueous sodium hydroxide solution is provided, comprising: in a stepwise concentration process of an aqueous sodium hydroxide solution including a concentration section comprising a first evaporator to an nth evaporator connected in series, adding the aqueous sodium hydroxide solution to the first evaporator, then evaporating it to obtain a first sodium hydroxide concentrate, and recovering the vapor evaporated from the aqueous sodium hydroxide solution; and adding the first sodium hydroxide concentrate to a subsequent evaporator, and adding the vapor recovered from the first evaporator to a mechanical vapor recompression device for compression, wherein the nth evaporator uses the compressed vapor as a heat source.

The application discloses a preparation method of a monopropellant monolithic catalyst, selects a honeycomb ceramic carrier which has good heat conductivity and heat shock resistance and can keep stable structure in a high-temperature environment, coats a modified alumina coating on the surface of the ceramic carrier, and then loads noble metal as a catalytic active component through an impregnation method, so that the connectivity between the noble metal active component and the carrier is enhanced, the noble metal loading capacity is increased, the coating firmness is improved, the catalyst breakage rate is significantly reduced, and the catalyst thermal stability is improved. The monolithic catalyst prepared by the application has high catalytic activity, good coating firmness, and the modified alumina coating can also increase the strength of the carrier, can effectively inhibit sintering and phase change of the carrier in a high-temperature environment, improve the thermal stability, and is not easy to break in a high-temperature environment.

The invention relates to a device and a method for preparing a mycelium plate from edible mushroom waste. A connecting plate is fixedly installed at the output end of the lower portion of the electric push rod, a pressing block matched with an opening in the top of the forming mold is fixedly installed below the connecting plate, an air inlet cavity is formed below the lower supporting and limiting heating plate, a controller is installed in the air inlet cavity, and a circulating air outlet cavity is formed above the upper supporting and limiting heating plate. A circulating exhaust fan is mounted at the top of the integrated growth control box; growth culture of mycelia is accelerated, the time of the whole process is shortened, the growth cycle of the mycelia is greatly shortened, and the large-scale and batch production requirements are met.

The utility model relates to a heat preservation composite board outer wall fixing anchor bolt gasket which comprises a screw rod, an expansion sleeve and an auxiliary sleeve, the expansion sleeve is arranged on the outer wall of the screw rod, and the outer wall of the expansion sleeve is sleeved with the auxiliary sleeve and detachably connected with the auxiliary sleeve; one end of the screw rod gradually expands outwards to form a conical bolt head, the other end of the screw rod is provided with a gasket and a nut, the expansion sleeve is located on the outer wall of the screw rod between the bolt head and the gasket, an expansion seat is arranged at the end, close to the bolt head, of the expansion sleeve, and a plurality of through grooves extending in the axial direction of the expansion seat are formed in the expansion seat. The auxiliary sleeve is arranged on the outer wall of the expansion sleeve, when a drilled hole is too large, the contact area between the anchor bolt and the hole wall can be increased through the auxiliary sleeve, re-drilling is not needed, damage to a base layer wall caused by re-drilling near the original anchor bolt position is avoided, and therefore the stability of the anchor bolt is improved; and the time and labor cost for re-drilling are saved, and the mounting efficiency is improved.

The invention belongs to the technical field of wind power generation equipment, and particularly relates to an electro-hydraulic brake device of a yaw system of a large wind turbine. The invention provides an electro-hydraulic brake device for a yaw system of a large-scale wind turbine, and aims to solve the problem that a brake device applied to a yaw system of a wind driven generator in the prior art is complex in structure and not easy to maintain. An electro-hydraulic brake device of a yaw system of a large wind turbine comprises an electromagnetic valve component and a brake disc body component, the brake disc body component comprises a brake disc body, an oil cavity is formed in the brake disc body, a piston is connected in the oil cavity in a sliding mode, a brake pad is installed on the piston through a rod piece, and the brake pad is located outside the oil cavity; the scheme that the hydraulic oil pressure is increased through electromagnetic valve driving, and then the hydraulic pressure drives the brake device to be started is adopted, namely, the electro-hydraulic joint control scheme. The problems of system complexity and response delay of a hydraulic system can be solved, enough driving force can be provided, and a normally-closed brake system can be rapidly started.

The utility model relates to the technical field of civil air defense emergency water storage, in particular to a civil air defense emergency water bag matched telescopic supporting frame which comprises an assembling water bag, a frame assembly is arranged outside the assembling water bag, and a bearing base is movably installed at the position, located at the bottom end of the assembling water bag, of the inner side of the frame assembly. The frame assembly comprises a supporting column attached to the outer portion of the bottom end of the assembling water bag, top end handrails are detachably installed at the front end and the rear end of the supporting column, inserting vertical rods are rotatably installed in the containing groove, and inserting grooves corresponding to the inserting vertical rods are formed in the top ends of the top end handrails. By means of the design, the civil air defense emergency water bag can be adjusted according to the actual size and shape of the civil air defense emergency water bag, and therefore it is guaranteed that the water bag can be stably supported in various environments. According to the adaptability, the use efficiency of the water bag is improved, the supporting frame can play a role in various scenes, and the flexibility of civil air defense engineering is enhanced.

The utility model belongs to the technical field of tunnel construction, and provides a super-long and super-thick tunnel lining mass concrete cooling device which comprises an outer lining formwork assembly, an inner lining formwork assembly and a cooling assembly. The cambered surface cooling water pipes are arranged on the top formwork and the side formwork, the cambered surface cooling water pipes can synchronously advance along with the lining trolley for cyclic construction, cyclic utilization of the cambered surface cooling water pipes is facilitated, the construction cost is reduced, the cambered surface cooling water pipes are annularly arranged in an S shape along the top formwork and the side formwork, the contact area between the cambered surface cooling water pipes and a lining is increased, and the service life of the lining is prolonged. And meanwhile, the S-shaped structure can enable the cooling water to generate more turbulent flow in the cambered surface cooling water pipe, so that more efficient heat transfer can be realized.