11results about How to "Reduce shock pressure" patented technology

This invention belongs to the field of hydraulic technology, specifically relating to a closed-loop motor hydraulic circuit and its control method, as well as a working machine. The closed-loop motor hydraulic circuit includes a hydraulic motor, a hydraulic pump, and a motor bypass oil circuit. The motor bypass oil circuit connects the inlet end and outlet end of the hydraulic motor and is equipped with a regulating valve for controlling the flow rate of the motor bypass oil circuit. The control method of the closed-loop motor hydraulic circuit includes the following steps: obtaining a speed control command for the hydraulic motor; adjusting the rotational speed of the hydraulic motor when the speed value corresponding to the speed control command is greater than a preset speed, and limiting the pressure at the inlet end of the hydraulic motor by controlling the regulating valve; adjusting the rotational speed of the hydraulic motor when the speed value corresponding to the speed control command is less than or equal to the preset speed. The above-described control method for the closed-loop motor hydraulic circuit enables precise and stable adjustment of the rotational speed and the pressure at the inlet end of the hydraulic motor.

A kind of photovoltaic power station field dust fall device, including photovoltaic module, fixed support, hydraulic machine, dust removal rod and atomizing spray head.Lifting of dust removal rod is controlled by hydraulic machine, and top spray head sprays mist to remove dust.Dust suction hole is arranged in dust removal rod, is connected with negative pressure main pipe by air suction branch pipe, realizes dust suction function;Liquid supply system is connected with main pipe by branch pipe and spray head.Limiting ring is arranged between modules, and dust removal rod is slidably connected by rail clamping on both sides, to ensure stable operation.Bottom air inlet is connected with spiral air pipe and air suction branch pipe, and liquid delivery pipe is connected with liquid supply branch pipe by spiral liquid pipe.Controller realizes intelligent control by remote communication.The device has the advantages of simple structure, flexible extension, avoiding obstruction, dust suction and atomization collaborative operation, improving dust fall efficiency and power generation stability, energy saving and high efficiency, strong applicability.

The invention relates to the technical field of oil well pipelines, in particular to an oil well pipeline anti-leakage sealing protection device and a using method thereof. According to the technical scheme, the oil well pipeline anti-leakage sealing protection device comprises a first pipeline protection ring, a second pipeline protection ring, a third pipeline protection ring, an inner clamping adjusting assembly, a pressure relief sealing protection assembly and a slow flow filter plate; the inner clamping adjusting assemblies are arranged on the inner sides of the first pipeline protection ring, the second pipeline protection ring and the third pipeline protection ring and can be used for being matched with the pipeline diameter to increase the sealing performance, and the pressure relief sealing protection assemblies are distributed on the first pipeline protection ring, the second pipeline protection ring and the third pipeline protection ring. The device can be used for pressure relief early warning protection, and the whole pipeline sealing protection effect is improved.

The utility model discloses a hollow fiber nanofiltration membrane for water treatment, and relates to the technical field of nanofiltration membrane filter elements, the hollow fiber nanofiltration membrane for water treatment comprises a membrane shell, the membrane shell is of a cylindrical structure with two open ends, the hollow fiber nanofiltration membrane is installed in the membrane shell, a first connector is installed at the top of the hollow fiber nanofiltration membrane, and a second connector is installed at the bottom of the hollow fiber nanofiltration membrane. The bottom end of the first connector is provided with a fixing ring through the inner wall of the membrane shell, a central pipe is arranged in the hollow fiber nanofiltration membrane, the top of the central pipe is a sealed end, the bottom of the central pipe is provided with a second connector, and the bottom of the second connector is provided with a sealing end. According to the scheme, the problems that in the using process of an existing water treatment hollow fiber nanofiltration membrane, due to the fact that the membrane shell is fixedly connected with the upper sealing head and the lower sealing head and cannot be detached, after the membrane shell is used for a period of time, external pressure type nanofiltration membrane tows in the membrane shell are difficult to clean or replace, and the membrane shell cannot be detached are solved. Therefore, the filtering effect of the hollow fiber nanofiltration membrane is influenced.

The application discloses a super-deep buoyancy type large double-wall steel hanging box in severe sea conditions, which comprises A section wall body, B section buoyancy cabin and C section wall body which are rigidly connected in sequence from bottom to top, and watertight sealing structures are arranged between the sections. A construction method of the super-deep buoyancy type large double-wall steel hanging box in severe sea conditions comprises the following steps: S1, prefabrication and processing; S2, section assembly; S3, floating and positioning; S4, bed fixation; S5, tide adaptation debugging; S6, bottom sealing concrete construction; S7, buoyancy conversion; S8, completion detection. The application effectively resists the erosion of high-speed water flow in super-deep water area to the base; four groups of pressure sensors arranged at the bottom can monitor the base contact stress in real time, ensure that the steel hanging box is uniformly stressed after bed fixation, and significantly improve the anti-sliding and anti-inclination stability of the structure in severe sea conditions, and reduce the safety hidden danger caused by the base erosion.

This utility model discloses a multi-branch starch slurry conveying pipeline device for clogging prevention, relating to the field of conveying equipment. The utility model includes a conveying pipeline body, which comprises branch pipelines and a main pipeline. A set of guide vane mechanisms is provided inside the connection between the main pipeline and the branch pipelines. The guide vane mechanism includes a base, a transmission rod, and a rotating rod. The base is embedded in the lower part of the pipeline, and guide vanes are provided on the surfaces of the transmission rod and the rotating rod. This utility model achieves automated adjustment of the guide vanes through the linkage design of the guide vanes, the reduction motor, and the flow sensor. This stabilizes the liquid flow state in the branch pipelines while reducing impact pressure on the pipeline, extending pipeline lifespan, and shortening maintenance cycles. Furthermore, the flow guiding function of the guide vanes further realizes basic flow distribution, simplifying the fine adjustment process of the valves.

The invention relates to the technical field of explosion-proof electric appliance cabinets, in particular to a pressure-relief explosion-proof electric appliance cabinet which comprises a cabinet body, a pressure relief valve, a positive pressure system and an isolation assembly. The cabinet body comprises an outer shell and an inner shell; the isolation assembly comprises four groups of isolation plates, a pressure relief cavity formed between the isolation plates and the inner shell, and a pressure relief plate connected with the isolation plates; a pressure valve is arranged at the corner angle of the inner shell; a positive pressure cavity is formed between the outer shell and the inner shell, and a mounting cavity is formed in the inner shell; and when high pressure is generated in the mounting cavity, the isolation plate is opened to introduce high-pressure gas into the pressure relief cavity for pressure relief. According to the invention, by arranging the isolation assembly to isolate the electrical components in the inner shell and arranging the pressure relief cavity, secondary disasters caused by internal high-temperature and high-pressure gas leakage can be prevented through the pressure relief cavity when the internal electrical components break down and burn.

This invention discloses a shock absorber, suspension system, vehicle, and suspension control method for eliminating high-frequency pulsations. The shock absorber includes: a cylinder containing a main piston that divides the cylinder interior vertically into an upper main chamber and a lower main chamber; a compression valve and a return valve on the main piston; a piston rod connected to the top of the main piston, extending upwards through the cylinder; and an inner shell connected to a hollow rod. An elastic component is located inside the inner shell, dividing the inner shell vertically into an upper secondary chamber and a lower secondary chamber. The hollow rod extends upwards through the main piston, with its two ends connected to the upper main chamber and the upper secondary chamber, respectively. A throttling orifice connected to the lower secondary chamber is located on the bottom side of the inner shell. This invention adds a structure within the cylinder that can elastically attenuate fluid impacts, effectively reducing pulsations, minimizing the impact of large-amplitude, high-impact compressive damping forces, reducing the direct transmission of road impacts to the vehicle body, and improving vehicle ride smoothness.

This utility model relates to the field of fire door technology and discloses a fire door with explosion-proof function, including a door body and a cylindrical body. Multiple cylindrical bodies are welded and fixed to the inner side of the door body. An inner cavity is formed on the inner side of the cylindrical body. An opening communicating with the interior is provided on the front end of the inner cavity on the door body surface. Multiple vents communicating with the interior of the inner cavity are provided on the rear end of the inner cavity on the door body surface. A connecting rod is provided inside the cylindrical body and can slide through to the rear end of the door body. This utility model's technical solution, by providing multiple inner cavity structures formed by cylindrical bodies inside the door body, which communicate with the outside through openings and vents, allows for the rapid release of explosion pressure by inner and outer sealing plates. Explosive impact pressure can push against the inner sealing plate, compressing a heat-resistant spring and opening it. The outer sealing plate also moves accordingly, releasing the blockage of the openings and vents, thus quickly releasing the explosion pressure, reducing the impact pressure on the door body, thereby making the door body less susceptible to damage and improving its explosion-proof performance.

This utility model relates to the field of sorting machine suction nozzles, and more particularly to a sorting machine suction device with a buffer structure. It includes a first buffer assembly and a second buffer assembly; the first buffer assembly is disposed on a base plate, and the second buffer assembly is connected to a suction nozzle; the first buffer assembly has a sliding mechanism, a portion of which is fixed to the base plate, the base plate is connected to another portion via a first buffer member, and the other portion is connected to the second buffer assembly; the second buffer assembly has a suction nozzle fixing block connected to the suction nozzle, and a second buffer member is abutting between the suction nozzle fixing block and the suction nozzle; the first and second buffer members have the same deformation direction. This application transforms the contact between the suction nozzle and the material into a flexible contact by synchronously deforming the first and second buffer assemblies in the same direction, effectively reducing impact pressure and protecting fragile materials; its guide rail-slider mechanism ensures precise linear guidance and reliable operation during the buffering process.

The utility model discloses a high-speed sealing structure of a direct-drive rotary table, which comprises a rotary table body, a bearing seat mounted at one end of the rotary table body, a bearing mounted in the bearing seat, a rotary shaft mounted in the bearing, a rotary disk mounted at one end of the rotary shaft protruding out of the bearing, and an air seal ring mounted between the rotary disk and the bearing seat. A bearing outer ring pressing ring is further installed on the outer ring of the bearing, elastic rubber rings are installed at the positions, corresponding to the rotary disc, of the bearing outer ring pressing ring, graphite rings are installed at the opposite positions of the two elastic rubber rings, and the two graphite rings make close contact. The dynamic sealing structure design is adopted, high-pressure compressed air enters from the first air path in the rotary table machine body and is finally exhausted to the atmosphere from the slit between the bearing seat and the rotary disc, and therefore the air sealing effect is achieved; meanwhile, the graphite ring adopted by the utility model can prevent the cutting fluid from entering the bearing and the rotary table body from a gap between the rotating shaft and the bearing outer ring pressing ring.