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 discloses a raft built-in dewatering structure, a sealing-well structure of a dewatering well and a sealing-well method, and relates to the technical field of the building construction.The raft built-in dewatering structure is arranged at the bottom of a foundation pit, and comprises a drainage ditch, a water collection pit, a well pipe, a water pump, an outer drainage pipe and electric wires, wherein the well pipe comprises a sand-free filter pipe and a water guide pipe, the sand-free filter pipe is embedded in the water collection pit, the top of the sand-free filter pipe is lower than the upper surface of the drainage ditch, the water guide pipe is arranged on the top of the sand-free filter pipe, the top of the water guide pipe exceeds the upper surface of the drainage ditch, and the top of the water guide pipe is provided with a cover plate in a covered mode. According to the raft built-in dewatering structure, the technical problems that the dewatering well is arranged at a local ponding position, sealing is conducted before concrete pouring of a base plate, then the base plate construction is conducted, if the surface water level is high and the water volume is large, the concrete pouring can not be conducted in time when sealing is conducted, resulting in a base plate cushion layer and a waterproof and protective layer being buoyed by the buoyancy of groundwater due to sealing, thus the base plate cushion and the waterproof and protective layer are destroyed are solved.

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 provides a pipe placing device for a ground source heat pump buried pipe. The device is prepared from concrete or cement mortar or other materials and is of a long bar shape. During the pipe placing operation, the device is clamped between heat exchange pipelines at the upper part of a U-shaped bend and completes the pipe placing operation by virtue of self weight. The cross section of the device is designed into different shapes. The device provided by the invention has the advantages of being convenient in construction, saving time, saving labor, lowering drilling cost, reducing construction cost, being convenient for hitting operation after pipe placing.

The invention relates to an assembled breathable filling box and a fabrication method thereof, and belongs to the field of common building construction. The filing box (1) comprises an upper assembly (2), a lower assembly (3) and stiffeners (4), wherein the upper assembly and the lower assembly are prepared from strip-shaped metal sheets (5) which are smaller than 1mm in thickness; each metal sheet is divided into a panel (7), two side plates (8) and two additional sides (9) by four meander lines (6) on the metal sheet; dense meshes (10) are formed in the panel; two ends of each metal sheet are respectively bent 90 degrees along the meander lines towards different directions, so as to form the upper assembly and the lower assembly, which respectively include three surfaces and two sides and are in a U-shaped structure; at least two stiffeners are arranged in each direction in the upper assembly and the lower assembly; and the upper assembly and the lower assembly are oppositely buckled to form the filling box. The filing box provided by the invention is convenient to produce, transport and install and good in mechanical property; and a hollow floor system formed by the product is relatively good in reliability, shock resistance and crack resistance.

The invention discloses a counter weight for a liquid level float switch. The counter weight comprises a counter weight cup and a counter weight cover, wherein the top of the counter weight cup is rotatably matched with the counter weight cover; the central part of the counter eight cover is provided with a cover eccentric hole; a cup eccentric hole matched with the cover eccentric hole is arranged in the counter weight cup; at least one filler is arranged around a cup hollow column; the counter weight cover is provided with a rotation handle which is connected with a shell of the counter weight cover; the shell of the counter weight cover is of a layered structure and comprises an indication layer and a connection layer in mutual connection; indication holes are arranged on the part of the connection layer close to the indication layer; the indication layer comprises a start indication layer and a close indication layer corresponding to each other; and the number of the indication holes is two, and the two indication holes are in one-to-one correspondence with the start indication layer and the close indication layer respectively. The counter weight disclosed by the invention notonly is of a simple structure and convenient to use and maintain, but also has relatively good fixing effect and high adjustability.

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 relates to a diesel engine lubricating oil way pumping oil and lubricating rapidly. The lubricating oil way comprises an oil pond, a perpendicular oil feed channel which is arranged in a diesel engine and which is connected to the oil pond, an one-way valve and an oil pump which is communicated with the top of the perpendicular oil feed channel. The one-way valve is arranged at the bottom of the perpendicular oil feed channel and prevents oil of the perpendicular oil feed channel from returning to the oil pond. After the oil pump is shut down, the oil is sealed in the perpendicular oil feed channel through the one-way valve, and the oil can be pumped into the lubricating oil way body through the oil pump. The problem that oil is pumped slowly when the engine starts is solved, and the problems of engine piston pad and ring damage are solved effectively.

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.

An apparatus for releasing a fish into deep water, comprising a central member having an upper end portion and a lower end portion, a spiral member attached to the central member, the spiral member being spaced away from the central member and having a free end, a plurality of swivels, wherein one of the swivels can be connected the upper end portion of the central member and another of said swivels can be connected to the lower end portion of the central member, and a weight connected to the lower swivel. The device can further provide a weight on the central member that overcomes buoyancy of the fish.

The invention discloses a method for manufacturing bubble type water-saving devices. The method includes steps of S1, connecting plastic hoses onto household faucets and enabling the plastic hoses toperpendicularly face downwardly; S2, inserting syringe needles into the plastic hoses from the side surfaces of the plastic hoses towards the oblique downward directions, separating needle points of the syringe needles from ports at the tail ends of the plastic hoses by the distances of 5-7 times the inner diameters of the plastic hoses under the control and keeping slopes of cutting edges at theneedle points facing downwardly; S3, clamping first clips at certain positions on the plastic hoses, forming narrow pipelines, and accelerating water flow to allow water to apply pressures lower than0.1 MPa to the pipe walls of the narrow pipelines; S4, clamping second clips at the tail ends of the plastic hoses to form convergence cone section pipelines at the tail ends of the plastic hoses, andforming atomized water by air and the water in air and water mixing cavities between the narrow pipelines and the convergence cone section pipelines. The certain positions on the plastic hoses correspond to the needle points. The method has the advantages of simplicity and convenience in manufacturing, low cost and applicability to diversified cleaning scenes.

The invention relates to a lubricant oil passage of a diesel engine and a working method of the lubricant oil passage. The lubricant oil passage comprises an oil bath, a vertical lubricant oil feeding passage, a one-way valve and an engine oil pump, wherein the vertical lubricant oil feeding passage is arranged inside a diesel engine body and is connected with the oil bath; the one-way valve is arranged at the bottom of the vertical lubricant oil feeding passage and is used for preventing the engine oil in the vertical lubricant oil feeding passage from flowing back to the oil bath; and the engine oil pump is communicated with the top part of the vertical lubricant oil feeding passage. By arranging the one-way valve between the engine oil pimp and the oil bath, the engine oil in the vertical lubricant oil feeding passage is prevented from flowing back to the oil bath completely when the engine is stopped, i.e., the engine oil is completely sealed in the vertical lubricant oil feeding passage by using the one-way valve after the engine is stopped; when the engine is started again, the engine oil can be pumped into the lubricant oil passage by the engine oil pump rapidly. The difficult problem that the engine oil is fed slowly when the engine is started is solved; and the problems of bearing score, scuffing of cylinder bore and the like of engines are solved effectively.

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 discloses a dam waterproof insulation structure and a manufacturing method. The dam waterproof insulation structure comprises a crush resistance structure plate and an insulation layer;the crush resistance structure plate is used for being fixed to the exterior facade or a slope of a dam, the crush resistance structure plate comprises an installing platform, the bottom end of the insulation layer is arranged at the installing platform, the inner side of the insulation layer is stuck to the exterior facade or the slope, and a first waterproof layer is arranged on the outer surface of the insulation layer. The crush resistance structure plate is arranged below the insulation layer, the crush resistance structure plate is fixed to the dam, upward pressure of water to the bottomof the insulation layer is transmitted to the dam, buoyancy of the insulation layer in water is eliminated, the phenomenon that the insulation layer is damaged or disengaged from the base layer of the dam body is avoided, and the insulation effect is ensured. The first waterproof layer is arranged on the outer surface of the insulation layer, the phenomenon that buoyancy is generated when the insulation layer is soaked with water is avoided, and the stability of the insulation layer is further ensured; the surface of the first waterproof layer is coated with an anti-ice pulling coating, so that the phenomenon that the insulation layer is damaged by an ice layer is avoided.

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 invention relates to an assembly type steel net cage filling body and a manufacturing method thereof, and belongs to the field of ordinary building constructions. The filling body (1) comprises an upper component (2), a lower component (3), at least one inner strutting piece (4) and edge reinforcing pieces (5), wherein the upper component and the lower component are made of strip-shaped ribbed expansion nets (6) with the steel plate thickness smaller than 1.0 mm, each ribbed expansion net is provided with two meander lines (7) which divide the ribbed expansion net into one panel (8) and two side plates (9), the two ends of each ribbed expansion net are bent by 90 degrees along the meander lines in the same direction, the upper component (2) with three faces and two edges and the lower component (3) with three faces and two edges are formed, the upper component (2) is of a U-shaped structure, and the lower component (3) is of a U-shaped structure. The inner strutting pieces (4) are installed in the upper component and the lower component, and the upper component and the lower component are oppositely buckled to form the filling body (1). The assembly type steel net cage filling body has very good economical efficiency and applicability and plays a driving role in development of the building technology.

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.

The invention belongs to the field of seafood production, and particularly relates to an efficient seafood abalone breeding method. According to the device, the abalone feeding step is simplified, the abalone breeding efficiency is improved, the feeding disc can be directly separated from the floating box cylinder from the fish raft, the labor intensity of workers is reduced, the feeding and feeding convenience is improved, the remaining amount of kelp in the feeding disc can be judged according to the position of the feeding disc in the box cylinder, and the feeding efficiency is improved. Due to the fact that the process of adding the kelp into the feeding disc is the process of increasing the overall weight of the feeding disc, the downward gravity of the whole feeding disc can overcome the upward buoyancy of the breeding box, and the whole feeding disc sinks again along with supplement of the kelp and drives the breeding disc to sink to the lower portion of the box cylinder.

The invention discloses a method for manufacturing bubble type water-saving devices. The method includes steps of S1, connecting plastic hoses onto household faucets and enabling the plastic hoses toperpendicularly face downwardly; S2, inserting syringe needles into the plastic hoses from the side surfaces of the plastic hoses towards the oblique downward directions, separating needle points of the syringe needles from ports at the tail ends of the plastic hoses by the distances of 5-7 times the inner diameters of the plastic hoses under the control and keeping slopes of cutting edges at theneedle points facing downwardly; S3, clamping first clips at certain positions on the plastic hoses, forming narrow pipelines, and accelerating water flow to allow water to apply pressures lower than0.1 MPa to the pipe walls of the narrow pipelines; S4, clamping second clips at the tail ends of the plastic hoses to form convergence cone section pipelines at the tail ends of the plastic hoses, andforming atomized water by air and the water in air and water mixing cavities between the narrow pipelines and the convergence cone section pipelines. The certain positions on the plastic hoses correspond to the needle points. The method has the advantages of simplicity and convenience in manufacturing, low cost and applicability to diversified cleaning scenes.