43results about How to "Avoid big shocks" patented technology

The invention relates to a high pressure helium charging device for an aerostat. The high pressure helium charging device comprises a pressure-reducing mechanism and a charging pressure expanding mechanism, wherein the pressure-reducing mechanism comprises an air inlet nozzle, a pressure-reducing one-way valve cover, a pressure-reducing spring bracket and a pressure-reducing compression spring; and the charging pressure expanding mechanism comprises a helium charging valve seat, a charging one-way valve, a charging spring bracket and a charging compression spring. The maximum helium charging pressure can reach 20 MPa, the maximum helium charging flow of a single device is greater than 0.5 cube / second, and a plurality of devices are used by connecting in parallel, so that the helium charging speed of the aerostat can be greatly improved; the pressure-reducing mechanism has an effect of greatly releasing pressure of high-pressure helium at an inlet; and the charging pressure expanding mechanism has effects of releasing the pressure of a gas of which the pressure is reduced once again, and guiding air flow to be released so as to prevent overlarge impact on nearby aerostat envelope materials. The high pressure helium charging device has a simple and compact structure and can be manually adjusted and assembled; and the high pressure helium charging device has high air tightness, so the gas does not leak in the process of charging helium.

The invention discloses an intelligent jellyfish and hydra breeding system. The intelligent jellyfish and hydra breeding system comprises a breeding tank, a filtering tank, a constant-temperature machine, pipe fittings, a colonization plate assembly and an internet-of-things device, wherein the pipe fittings include a water inlet pipe, a circulating water pipe and a water distribution pipe; an illuminating coral lamp is arranged at the top of the breeding tank, an in-tank circulator, a guide plate and a top drainage water filtering and perforating guide plate are arranged in the breeding tank,the filtering tank is arranged in the aquaculture tank, the water inlet pipe is connected with the breeding tank and the filtering tank, the circulating water pipe is arranged at the connection partof the water inlet pipe and the breeding tank and the filtering tank, the water distribution pipe is connected with the breeding tank, the constant-temperature machine is connected with the water distribution pipe, the colonization plate assembly is arranged in the breeding tank, and the internet-of-things device is connected with the constant-temperature machine and the illuminating coral lamp. The intelligent jellyfish and hydra breeding system can achieve circular change of a water body in the breeding cylinder and is suitable for large-scale popularization.

The invention discloses a progressive rope gripper. The progressive rope gripper comprises a frame body which is provided with two energy storage spring mechanisms, a fixing plate and an unhooking mechanism, wherein a fixed brake plate is arranged on the fixing plate, a wedge-shaped slideway is formed between the fixed brake plate and the frame body, and is provided with a wedge-shaped movable brake plate; and the fixed brake plate is arranged on the inner side surface of the fixing plate by an elastic sliding assembly. The invention also discloses a progressive overspeed protection safety device for a dragging type lifting device adopting the progressive rope gripper. The clamping force of the rope gripper disclosed by the invention can be adjusted in a floating manner by an elastic piece, the progressive positive pressure is applied on a dragging type steel wire rope, and the damage of the steel wire rope caused by the sudden brake and the grand impact to the frame body with the steel structure can be avoided; and the overspeed protection safety device rapidly and directly stops the dragging type steel wire rope, avoids the falling or top rushing of a lifting cage in the construction, and plays the well role of safety protection.

The invention discloses a layered flood discharge and sediment discharge device for a reservoir, which comprises a U-shaped dam body in the longitudinal section, and the dam body includes two oppositely arranged side walls (6) and a connection connecting the bottoms of the two side walls (6). Section (4), on the side wall (6) close to the reservoir, there are three spill outlets (7) from top to bottom, and the three spill outlets (7) are respectively provided with surface flood gates (1), middle A flood discharge gate (2) and a bottom flood discharge gate (3); a bottom water outlet (13) is provided at the bottom of the side wall (6) away from the side of the reservoir, and a water outlet gate (5) is arranged at the bottom water outlet (13); The layered flood discharge and sand discharge device communicates with the water body of the reservoir through the flood discharge port (7). The flood and sand discharge device of the present invention has the characteristics of simple structure, timely discharge of muddy water, strong and durable device, long-term stable and reliable operation, and the like.

The invention discloses a culture method and device for high-grade oysters. The culture method comprises the steps that firstly, a culture sea area meeting the national first-grade water quality is selected as a high-grade oyster culture sea area, and meanwhile high-grade monomer seed oysters are induced and bred; then the high-grade seed oysters are placed in the culture device, and the culture device is put in the culture sea area; finally the oysters reach the standard commercial specification through about one year of natural culture, and the oysters can be harvested. A body of the culture device is a double-layer cuboid culture frame, the culture frame is connected with a floating barrel through a polyethylene rope, a frame cover with hooks is arranged on one side of the culture frame, separation plates are arranged in the culture frame to evenly divide the frame into four boxes, each box of the frame is provided with a net cage in a matched mode, and a net cage cover with hooks is arranged on one side of each net cage. The culture method and device are suitable for open sea deep water sea area culture, the open sea is deep in water, fast in flow, large in wind and wave, good in water quality and rich in bait, the high-grade oysters with attractive shell shapes and good quality can be cultured through the method, and the diversified demands of the markets can be met.