72results about How to "Overcome buoyancy" patented technology

The present invention relates to concrete for pipeline balance, and is especially one kind of dry concrete with density of 2,400-2,850 Kg/cu m for coating pipeline. The concrete for coating pipeline has the materials comprising heavy aggregate 30-55 wt%, sand 15-45 wt%, cement 16-25 wt% and water 3.5-8 wt%. It is coated to the outer surface of pipeline through spraying and extruding to form concrete coating maintaining the stability of pipeline in water. The present invention has wide application range.

A heat radiating fan includes a fan frame the center of which is formed with a middle column; at least one bearing is arranged in the middle column; a stator is sheathed in the periphery of the middle column; a rotor can rotate relatively to the stator; the rotor includes a hub annularly arranged on the periphery of the stator, a plurality of fan vanes annularly arranged on the periphery of the hub, a permanent magnet ring closely arranged on the inner side of the hub as well as a rotating shaft vertically extending from the center of the hub and being accepted in the bearing; the stator includes the iron core of the stator, a coil twisted on the iron core of the stator as well as a circuit board electrically connected with the coil; the iron core of the stator includes an annular part and a plurality of claw poles extending from the periphery of the annular part to the external radical direction; at least one column body is upwards and convexly arranged on the circuit board; the column is correspondingly arranged between two neighboring claw poles; the material of the column is a permeablility magnetic material and has a magnetic attraction with the permanent magnet ring of the rotor, thereby attracting the rotor and maintaining the balancing rotation of the rotor.

The invention discloses a waterproof curtain wall for a foundation pit, and belongs to the field of construction of foundation pits. At least one layer of waterproof curtains consisting of a plurality of high-pressure jet grouting piles is arranged on outer sides of support piles of the foundation pit or among the support piles of the foundation pit; bottoms of the high-pressure jet grouting piles are placed on an impervious stratum below the bottom of the foundation pit; the adjacent high-pressure jet grouting piles of the waterproof curtains on the same layer are gripped with one another; the adjacent high-pressure jet grouting piles between the waterproof curtains of the adjacent layers are gripped with one another; the waterproof curtains arranged among the piles are gripped with the support piles; and the diameter of a gripping portion of each high-pressure jet grouting pile is 1/4-1/3 of the diameter of each pile. The waterproof curtain wall for the foundation pit has high permeability coefficient in underground water, has a high gripping effect when difficulty on tube well dewatering is high, is convenient and speedy, and has a high waterproof effect.

The invention discloses a flexible net expanding device which is arranged on a trawl net of a fishing ship. The device comprises flexible water power floaters and flexible water power sinkers, wherein the flexible water power floaters and the flexible water power sinkers, which are flexible sheet-like objects, are connected in series to a floater line and a sinker line respectively; a plurality of shaping ropes are arranged on the flexible water power floaters and the flexible water power sinkers respectively; the shaping ropes on all the flexible water power floaters are connected in parallel; the shaping ropes on all the flexible water power sinkers are connected in parallel; the fishing ship pulls a fishing gear to move relative to water, the flexible water power floaters and the flexible water power sinkers form a concave fluid facing surface; the fluid facing surface faces the fishing ship; penetrating fluid through holes are formed in the flexible water power floaters and the flexible water power sinkers respectively. The flexible net expanding device has the advantages that the net expanding effect and the using energy-saving effect of the trawl net can be improved; the safety performance and the environmental protection performance of the trawl net are improved.

The invention discloses a lifting fin plate stabilizing system. The system comprises a vertical well and fin plates located in the vertical well; hydraulic locking pins are arranged in the middles ofthe fin plates; grooves are formed in the tops of piston push rods of the hydraulic locking pins, and infrared emitting devices provided with power sources are embedded in the grooves; locking pin bases are arranged on the wall of the vertical well, limiting grooves are formed in the front ends of the locking pin bases, and the piston push rods can stretch into the limiting grooves for jacking; signal line through holes communicated with the outside of the locking pin bases are formed in the bottoms of the limiting grooves; infrared receiving devices are arranged in the through holes, the hydraulic locking pins are connected with a petroleum supply station, the petroleum supply station, the infrared emitting devices and the infrared receiving devices are connected with a control device through a communication line, pressure sensors are arranged in the limiting grooves and connected with the control device, the petroleum supply station comprises a hydraulic locking pin control system, and the hydraulic locking pin control system is connected with the hydraulic locking pins.

The invention relates to a lubricating oil way which fast pumps oil into a lubricating oil channel and is used for a diesel engine. The lubricating oil way comprises an oil pond, a vertical oil inlet channel which is arranged in the engine body of the diesel engine and connected with the oil pond, a one-way valve which is arranged at the bottom of the vertical oil inlet channel and prevents oil in the vertical oil inlet channel from flowing back to the oil pond, and an oil pump communicated with the top of the vertical oil inlet channel; after the oil pump is shut down, the oil is sealed in the vertical oil inlet channel through the one-way valve, and when the oil pump is started again, the oil pump can fast pump the oil to the lubricating oil channel. The difficult problem that oil is fed slowly when an engine is started is solved, and the problems about bearing score, cylinder score and the like are effectively solved.

The invention relates to a steel net cage filling body and a manufacturing method thereof, and belongs to the field of common building structures. The filling body (1) comprises an upper component (2), a lower component (3), internal supporting pieces (4) and edge reinforcing pieces (5). The upper component and the lower component are each made of strip-shaped high-ribbed formworks (6) with the steel plate thickness smaller than 0.5 mm, each high-ribbed formwork is provided with two bending lines (7) which divide the high-ribbed formwork into a face plate (8) and two side plates (9), and the two ends of each high-ribbed formwork are bent by 90 degrees correspondingly along the bending lines towards the same direction, so that the U-shaped upper component (2) with three faces and two edges and the lower component (3) with three faces and two edges are formed correspondingly; at least one internal supporting piece (4) is mounted in the upper component and the lower component, and the filling body (1) is formed by oppositely buckling the upper component and the lower component. The steel net cage filling body has high economical performance and applicability and promotes the development of building technologies.

The present invention relates to concrete for pipeline balance, and is especially one kind of dry concrete with density over 2,850 Kg/cu m for coating pipeline. The concrete for coating pipeline has the materials comprising heavy aggregate 56-78 wt%, sand 2-14 wt%, cement 16-25 wt% and water 3.5-8 wt%. It is coated to the outer surface of pipeline through spraying and extruding to form weight balancing concrete coating for maintaining the stability of pipeline in water. The present invention has wide application range.

A flexible tubing for fine bubble aeration is provided with an air passageway defined in part by an upper portion and a lower portion. The tubing can be made of a uniform weighted material with more material in the lower portion than in the upper portion. This makes the tubing self-orienting, in that it will tend to orient itself with micro-slits along the upper portion facing upward and the lower portion facing downward when submerged in a body of water. An automated, one-stage production line converts raw tubing material to a finished tubing product without the need for separate processing. A method of coiling the tubing places the micro-slits approximately 90° away from the surface of a spool hub, thereby avoiding a longitudinal arch in the tubing and ultimately preventing roll-over and improper slit orientation after installation in a water body.

The invention discloses a central drainage system for an outer floating roof storage tank. The system comprises a floating disc (1), a water collecting pit (2) and a drainage port (3), and further comprises an S-shaped central drainage pipe (4) arranged in an inner cavity of the storage tank and multiple counterweight blocks (5) fixed on the central drainage pipe (4). The invention further discloses a counterweight method of the central drainage system; and along the upper end to the lower end of a pipe body, gaps between any counterweight blocks (5) and the next adjacent counterweight blocks (5) besides the first and final counterweight blocks are smaller than and equal to gaps between any counterweight blocks (5) and the previous adjacent counterweight blocks (5). The central drainage system is simple in structure, fewer in bonding joints, low in leakage possibility, long in service life and convenient for installation and maintenance, and can prevent the pipe body from floating and moving to wind with surrounding support columns (7).

The invention discloses a luminous fishbone-pattern bionic fishing bait and a preparation method thereof, and relates to the technical field of fishing supplies. The fishing bait comprises a fishing bait body and bionic laser eyes; a luminous coating is compounded on the outer surface of the fishing bait body; a laser layer is compounded on the surface of the luminous coating; the ends of the fishing bait body are also provided with hanging rings; the fishing bait body is of a metal spindle-type flat structure. According to the luminous fishbone-pattern bionic fishing bait, the surface of thelead fishing bait body is provided with the luminous coating, the luminous coating is externally provided with the laser layer including a fishbone structure and a fish eye structure, and therefore the fishing bait can have the functions of increasing the gravity to help a fishing wire to overcome seawater buoyancy and has the functional advantage of luring fish schools to improve the fishing efficiency.

The invention relates to the technical field of surface treatment of glass, and specifically discloses a device for soaking fireproof glass. The device comprises a rack, a soaking box body, a water storage tank body and a water pump, wherein the soaking box body and the water storage tank body communicate with the water pump through a water pipe, and the device further comprises an actuating mechanism and an air drying mechanism; the actuating mechanism comprises an arc-shaped cylinder body and a control mechanism which is mounted under the arc-shaped cylinder body, an electronically controlled throttle valve is installed in a rodless cavity in the arc-shaped cylinder body, and the rodless cavity in the arc-shaped cylinder body communicates with the water pipe through a one-way valve; a glass clamp is installed in the diameter direction of an arch-shaped piston rod of the arc-shaped cylinder body, the control mechanism includes a baffle and an iron block which is connected with a floatball which is used for controlling actions of the iron block, and the iron block is connected with the float ball through a rope. Through adoption of the technical scheme, the problem that damage tohuman health is caused by fireproof liquid which is adhered to the glass surface can be solved, and therefore the device can be widely applied to soaking of the fireproof glass.

The invention provides a hollow floor slab supported by a steel mesh body with holes, the cavity floor is composed of a main beam, a rib beam, concrete and a steel mesh body; the steel bars in the middle of the main beam are less than the steel bars at both ends of the main beam; The slump of the concrete is less than 200mm; the steel mesh body is composed of steel mesh and foamed cement blocks; the steel mesh is expanded steel mesh or punched steel mesh; Blocking the foamed cement block; the upper or lower end of the supporting foamed cement block has a prefabricated notch; the height of the foamed cement block matches the height of the inner space of the steel mesh; at least one supporting foaming block in the steel mesh body Cement blocks and two plugging foam cement blocks.

The invention relates to an impact-vibration-resistant subsea pipeline protection device which comprises a pipe base, a counterweight layer, a damping ring and an inner coating, a reinforced concretepart in the counterweight layer comprises upper reinforced concrete and two pieces of lower reinforced concrete, the joints of the upper reinforced concrete and the lower reinforced concrete are eachof a protruding block structure, and protruding blocks of the upper reinforced concrete are arranged below protruding blocks of the lower reinforced concrete. An outer ring and an inner ring are arranged in the damping ring, a spring is arranged in the outer ring, a first damping piece is installed at the side, close to the outer ring, of the inner ring, a second damping piece is installed at theside, close to the pipe base, of the inner ring, and a roller is arranged between the first damping piece and the second damping piece. External impact load and vibration load are resisted through thereinforced concrete part and the damping ring, adverse effects on a submarine pipeline due to external adverse factors such as seabed erosion, tide, eddy current oscillation and boat anchors can be effectively avoided, and good conditions for normal work of the submarine pipeline are guaranteed.

The invention provides a cavity floor slab with a through-beam, the cavity floor is composed of a main beam, a rib beam, concrete and a steel mesh; the steel bars in the middle of the main beam are less than the steel bars at both ends of the main beam; The slump is less than 200mm; the steel mesh body is composed of steel mesh and foamed cement blocks; the steel mesh is expanded steel mesh or punched steel mesh; foam cement block; the height of the foam cement block matches the height of the inner space of the steel mesh; there is at least one supporting foam cement block and two blocking foam cement blocks in the steel mesh body; the steel mesh body and The beams are interconnected to form a hidden channel.

The present invention provides a cavity floor slab with holes formed by a steel mesh body. The cavity floor slab is composed of a main girder, a rib beam, concrete and a steel mesh body; the reinforcement in the middle of the girder is less than the reinforcement at both ends of the girder; The concrete slump is less than 200mm; the steel mesh body is composed of steel mesh and foamed cement blocks; the steel mesh is expanded steel mesh or steel plate punching mesh; the foamed cement blocks are supported foamed cement blocks and plugging foamed cement blocks; the height of the foamed cement blocks matches the height of the inner space of the steel mesh; there is at least one supporting foamed cement block and two blocking foamed cement blocks in the steel mesh body; the void The cavity floor can be used as a solar air supply pipe and a fire prevention and smoke exhaust pipe to realize the multi-functional application of the cavity floor.