37results about How to "Guaranteed watertight" patented technology

The invention relates to a hinge type light hydraulic watertight door under a roll-on-roll-off ship, which comprises a door body, a hinge, a support, a sealing rubber strip, a hydraulic oil cylinder, a locking device and an oil cylinder support, wherein the watertight door is matched with a vehicle slope, the end part of the slope is arranged near a watertight bulkhead, the hinge is arranged below the door, and the door body is placed on the slope when the door is opened and forms an integer with the slope so as to be convenient to a vehicle to pass through; and the door is opened and closed by using the hydraulic oil cylinder, the periphery of the door is provided with the sealing rubber strip, the locking device is utilized for locking the door after the door is closed, so that the watertightness of the door is ensured. The distance between the watertight bulkhead and the end part of the slop is selected according to the gradient of the slope and a hinge installing space, part of the slope close to the watertight bulkhead locally concaves, the concave depth is equal to the thickness of the door body, the concave length is equal to the length of the door body, and when the watertight door is opened, the door body can be flatly placed on the slope and forms an integer with the slope so as to be convenient to the vehicle to pass through.

The invention discloses a push-pull window with high leak tightness, which comprises a window frame and window sashes. A first sealing strip taking the shape of a right-angled triangle cylinder and with the same width with the window sash is arranged in concave grooves at the upper end and the lower end of the window frame; a second sealing strip taking the shape of the right-angled triangle cylinder and corresponding to the first sealing strip is arranged at one side of the window, facing to the concave grooves of the window frame; the first sealing strip and the second sealing strip are a rectangle when being closed. Sealing devices are respectively arranged between the adjacent two window sashes, and between each window sash and the side parts of the window frame. The push-pull window of the invention has simple structure, overcomes the dead corner of sealing, increases the sealing performance and guarantees the air tightness, the water tightness, the sound insulation, the thermal insulation and the dust proof performances of the push-pull window, thereby realizing the effect of energy conservation and environmental protection.

A water circulation food cooler, comprising at least a cooling bowl and a water supply pipeline, the cooling bowl is a hollow structure, divided into three layers, an inner layer, a partition and an outer layer, the partition separates the hollow part of the cooling bowl into two a cavity, and the two cavities are connected to each other at the top of the interlayer; the bottom of the interlayer has a hole, and the orifice is the water inlet, and the bottom outlet of the outer cavity of the hollow part of the cooling bowl is the water outlet, and the cooling bowl The water inlet, inner cavity, outer cavity and water outlet constitute the water circulation channel of the cooling bowl; the water supply pipeline is arranged below the bottom of the cooling bowl, and the water supply pipeline has a water supply pipeline and a return water pipeline, and the water supply pipeline The water supply pipeline is connected with the water inlet of the cooling bowl, and the return water pipeline is connected with the water outlet of the cooling bowl. The water circulation food cooler of the present invention has a special cooling bowl connected to the water supply pipeline, and the circulating water enters the inner cavity of the cooling bowl to quickly take away the heat of the food. It is safe and hygienic, convenient and comfortable to use, and is suitable for mass use.

The invention provides a wave energy craft with variable ship length. It includes a wave energy vehicle composed of a hull, a hydrofoil installed on the lower part of the hull through a bracket, and a rudder installed at the tail of the hull. The hull is composed of three parts: the first section, the middle section and the tail section, and the middle section is a telescopic section. The wave energy vehicle with variable captain of the present invention can control the captain of the ship under different waves and sea conditions. Compared with a fixed-length wave energy vehicle, an appropriate change in the captain can improve the wave energy utilization efficiency of the wave energy vehicle. In long waves and high sea conditions, increasing the length of the ship can increase the pitch and heave range of the ship, thereby improving the propulsion performance of the aircraft. In short-wave and low sea conditions, reducing the length of the ship makes the moment of inertia smaller, the range of motion of the hull becomes larger, and the wave energy is more effectively used for propulsion.

The invention relates to a bearing head of an underwater sonar electronic system for connecting a trailing cable. The trailing cable comprises the following parts from inside out: optical fibers and a cable (1), a pressure-proof sheath (3), a Kevlar layer (4) and an outer sheath (5), wherein the trailing cable is filled with oil; the bearing head comprises an upper tapered cylinder (7) and a lower oil-filled sealed cabin (10), and the tapered cylinder (7) is used for locking the Kevlar layer (4) of the trailing cable; the oil-filled sealed cabin (10) is communicated with an oil charge oil circuit (2) in the trailing cable, the optical fibers and the cable (1) go out from the oil-filled sealed cabin (10) and are welded in a watertight plug-in component on the bearing head shell (16); the bearing head shell (16) is provided with an oil nozzle (12), and the oil nozzle (12) is communicated with the oil of a underwater sonar electronic device through a pressure-proof rubber tube (14), thus the communication of the oil charge oil way (2) and external devices in the trailing cable with mixing oil charge and photoelectricity is realized.

The invention provides a patch-type raincoat. The patch-type raincoat comprises basic patch units, welt zippers, welt hook-and-loop fasteners, special patch units and a binding belt; the welt zippersare arranged on the outer sides of the edges, in the vertical direction, of the basic patch units and the special patch units; the welt hook-and-loop fasteners are arranged on the inner sides of the tops and the outer sides of the bottoms, in the horizontal direction, of the basic patch units and the special patch units; the binding belt is a part for independent binding. By arranging the basic patch units and the special patch units, the problems are solved that the length and covering area of a raincoat body of an existing raincoat cannot be changed according to the actual needs of a user and the amount of rain, and the raincoat occupies large space when stored.

A waterproof structure, which is for one connector fixed to a mounting hole of an automotive motor's metallic case and another connector fixed to a mounting hole of an automotive inverter's metallic case and connected to the one connector, comprises ring-shaped first and second packings. The first packing resides between the one case's surface and the one connector's surface that are orthogonal to a fitting direction of the connectors such that the one case's mounting hole is surrounded thereby to provide waterproof interface between the one case and the one connector. The second packing resides between the other case's surface and the other connector's surface that are parallel to the fitting direction. The second packing extends on an outer circumferential surface of the other connector to provide waterproof interface between an inner circumferential surface of the other case's mounting hole and the other connector's outer circumferential surface.

The invention provides a shut-in construction method of a pumping shaft in a basement base plate. The shut-in construction method of the pumping shaft in the basement base plate includes the following steps. Firstly, a water-proof casing pipe is pre-buried before construction of the basement base plate and sleeved on a concrete draining pipe. Secondly, three seal rings are fully welded on the water-proof casing pipe and a concrete cushion layer is poured after the water-proof casing pipe is fixed. Thirdly, a water-proof layer is added on the concrete cushion layer and the base plate undergoes rib binding. Fourthly, a concrete base plate is poured and construction of the base plate is finished. Fifthly, a emergency draining device is prepared and well shut-in are performed. The prepared emergency draining device comprises a rapid shifting pump electric pulley, a tool hood and an overflowing pipe. In terms of well shut-in, three kinds of materials are needed, namely, rubbles, dry cement dust and C40 micro expansion concrete. And then the tool hood is added. Sixthly, the water-proof casing pipe and the tool hood are blocked. The shut-in construction method of the pumping shaft in the basement base plate is capable of successfully shutting in a well, the base plate does not leak, construction cost is low, quality is high and speed is fast.

The invention relates to a floating device for a power head of a non-excavation pipelaying drilling rig, which includes a main shaft of the power head, a floating sub-joint and a spline sleeve. The gap fit is adopted between the sleeves; it is characterized in that: the inner hole of the main shaft of the power head and the inner hole of the floating nipple are sealed and connected by a hollow spherical water shaft; the first end of the spherical water shaft is set as a spherical surface , the first end is connected to the main shaft of the power head through the first sealing connection assembly; the second end of the spherical water shaft is set as a cylindrical surface, and the second end is connected to the floating nipple through the second sealing connection assembly. The invention has ingenious structure and reasonable design. When the cylindrical surface at the second end of the spherical water shaft is subjected to an external load, the spherical surface at the first end of the spherical water shaft can rotate freely to balance the forces on both ends. Ensure the water seal of the entire spherical water shaft.

The invention discloses a high-precision water quality sampling equipment, belonging to the technical field of sampling equipment. A mounting column is connected to the bottom of the weight mounting seat, and a horizontal adjusting sliding seat is sleeved on the mounting column; The rods are evenly distributed along the circumference of the center point of the sampling base; a gravity submersible frame is movably set on the guide rod, a sampling bottle is arranged in the gravity submersible frame, a sealing plug is arranged at the bottle mouth of the sampling bottle, and a gravity submersible frame is arranged on the guide rod. The top is provided with an opening and closing mechanism matched with a sealing plug; the gravity submersible frame is connected with a lifting drive mechanism; the invention aims to provide a high-precision water quality sampling device with compact structure, convenient use and good effect; sampling.

The invention discloses water sample collecting equipment for simultaneously collecting multiple layers of water samples, belonging to the technical field of sampling equipment. According to the technical key point, the water sample collecting equipment comprises mounting base plate, wherein a plurality of connecting columns are distributed at the bottom of the mounting base plate, a support column is connected to the center of the upper end surface of the mounting base plate, a mounting column is arranged at the near end part of the upper end of the support column, an annular sampling seat isarranged along the circumferential direction of the outer wall of the mounting column, and multiple groups of guide rods are connected between the bottom of the annular sampling seat and the mountingbase plate along the vertical direction; each group of the guide rods is sleeved with a gravity diving frame, sampling bottles are arranged in the gravity diving frames, sealing plugs are arranged atbottlenecks of the sampling bottles, and starting-stopping mechanisms matched with the sealing plugs are arranged at the tops of the gravity diving frames; and each gravity diving frame is connectedwith a lifting driving mechanism. The invention aims at providing the portable water sample collecting equipment for sampling water quality, and the portable water sample collecting equipment is compact in structure, convenient to use and good in effect and can be used for simultaneously collecting multiple layers of the water samples.