52results about How to "Avoid scour" patented technology

The utility model belongs to the technical field of roadbed protection, and discloses a roadbed protection and drainage integrated structure which is characterized in that the roadbed protection and drainage integrated structure comprises a side slope and a plurality of water collecting grooves formed in the side slope, and filter screens are vertically and fixedly installed at the bottom of the side slope and one sides of the water collecting grooves; two vertical plates are vertically and slidably connected into each water collecting tank, a top plate is fixedly mounted at the tops of the two vertical plates in each group, rotating plates are rotatably connected to the bottoms of the top plates, and tension springs are rotatably connected between the rotating plates and the corresponding vertical plates. Sediment carried by rainwater is intercepted by the filter screen when passing through the filter screen, so that the silt entering the water collecting tank is reduced, the cleaning frequency is reduced, in addition, the rainwater impacts the rotating plate after penetrating through the filter screen, the rainwater completely falls into the water collecting tank through flow guide of the rotating plate, the situation that the rainwater still scours a side slope located below after being filtered is avoided, and the cleaning efficiency is improved. And the drainage effect is better achieved.

The invention relates to a modular assembly type high fill retaining wall, and relates to the technical field of ecological protection, the modular assembly type high fill retaining wall comprises a high fill soil body and a retaining wall body formed by splicing a plurality of precast concrete modules, and the retaining wall body formed by splicing the plurality of precast concrete modules is laid on the left side of the high fill soil body; a three-stage drainage mechanism is integrated on the retaining wall body. According to the modular assembly type high-fill retaining wall, a three-stage drainage mechanism composed of the first-stage earth surface water interception assembly, the second-stage wall back collecting and drainage assembly and the third-stage wall body guiding-out assembly is integrated in the retaining wall body, and a complete hydrological regulation and control path from slope top runoff interception, wall back seepage filtration and collection to directional guiding and drainage in the wall body is constructed. Wherein the seepage regulation and control layer effectively prevents fine particles of a high-filled soil body from losing, the confluence channel and the guide and discharge pipe gallery arranged with the gradient cooperate to achieve efficient one-way water flow discharge, the hydrostatic pressure behind the wall and the height of the infiltration line are remarkably reduced, and the problems that drainage holes of a traditional assembly type retaining wall are prone to being blocked and difficult to maintain are solved.

This utility model relates to the field of river management engineering technology, specifically to a gravity retaining wall for river landscape. It includes a base slab and a wall body. The water-facing side of the base slab is equipped with a toothed wall and pre-embedded U-shaped steel bars, connected to gabion cages by steel wire ropes to resist erosion. Pre-embedded stones on the top surface of the base slab enhance its interlocking with the wall body. The water-facing side of the wall body is faced with pebbles to enhance its aesthetics, and a planting groove is provided at the top for planting greenery. The wall body has a built-in dual drainage system: a first drainage pipe directs water from behind the wall into the planting groove for irrigation, and a second drainage pipe is dedicated to pressure relief drainage; both have a slope of 5%. This utility model integrates flood control, landscape, and ecological functions, solving the problems of poor water affinity and insufficient erosion resistance of traditional retaining walls.

This invention relates to an anti-scour device for a wind turbine monopile, comprising a first anti-scour component, tire components, and a reinforcing component. The first anti-scour component is mounted on a base and includes a bracket and a first anti-scour net. The bracket is arranged around the periphery of the wind turbine monopile's pole, and the first anti-scour net is disposed on the side wall of the bracket, spaced apart from the pole to form a receiving space. Multiple tire components are disposed within the receiving space and are connected and fixed to the bracket via cables. The reinforcing component includes a sleeve and multiple tie rods. The sleeve is fitted around the periphery of the pole, and the multiple tie rods are spaced apart along the circumference of the pole, with both ends of the tie rods connected and fixed to the sleeve and the bracket, respectively. Under the anti-scour action of the first anti-scour component and the tire components, the sand and gravel layer surrounding the wind turbine monopile can be protected, preventing or reducing seawater erosion of the sand and gravel layer and the formation of scour pits, ensuring that the sand and gravel layer can provide sufficient load to the base and guaranteeing the stability of the wind turbine monopile.

This invention relates to the construction of water conservancy projects, and more particularly to retaining walls for water conservancy projects. The retaining walls are constructed from multiple precast raft slabs connected in series. The precast raft slabs provide a better foundation for the construction of the retaining walls and offer better resistance to settlement and displacement during later use. Compared to direct masonry, the precast raft slabs offer better waterproofing and can be prefabricated, saving construction time. A connecting device is provided between adjacent precast raft slabs to better adjust and maintain their position, improving operational stability. A waterproof structure is provided at the connecting device to prevent water erosion of the dam and to strengthen the connection between adjacent precast raft slabs.

The utility model provides a kind of farmland type ecological buffer zone structure, it is related to agricultural ecological environment management technical field, including land buffer area one, ecological regulation pond, land buffer area two and concave green land, land buffer area one, ecological regulation pond, land buffer area two and concave green land are sequentially distributed from farmland side to river embankment side, land buffer area one and land buffer area two are planted with arbor shrub and grass flower mat, the ecological regulation pond is sequentially provided with impermeable layer, adsorption layer and plant layer from bottom to top, the concave green land is laid with buffer base, the concave green land is planted with herbaceous plant and shrub. This structure effectively intercepts farmland non-point source pollution, reduces river pollutant, helps to strengthen river self-purification capacity, promotes aquatic animal and plant diversity development, and guarantees ecological benefit to play well.

The invention discloses composite hydrogel containing azelaic acid and a preparation method of the composite hydrogel, and belongs to the technical field of skin medicines.The azelaic acid is loaded and free azelaic acid is fixed through a layered structure of Ca / LDH powder, and then polymerization modification is conducted through dodecyl methacrylate, so that the composite hydrogel can be firmly smeared on the skin and is prevented from being scoured by sweat, and the skin care effect is good. Moreover, the Ca / LDH powder has an ion exchange characteristic between layers, so that a slow release effect on azelaic acid can be achieved; encapsulated menthol exists in the composite hydrogel containing azelaic acid, the encapsulated menthol is used for clathrating menthol through the clathration of a chitosan / cyclodextrin encapsulation carrier, and after clathration of the chitosan / cyclodextrin encapsulation carrier, a compact crystal structure of the carrier and the cavity clathration of cyclodextrin form a double barrier, so that the composite hydrogel containing azelaic acid has a good barrier effect. Contact between menthol and outside air and temperature is isolated, and volatilization loss of menthol is greatly reduced.

The application discloses a heat exchange tube with a welding protection structure and a heat exchanger tube plate, which comprise a main tube, a locking portion and a half push-out portion arranged on the inner side of a tube body; and a protection tube sleeve, which comprises a T-shaped pipe fitting arranged on the end of the tube body in a detachable manner, a connecting portion and a separation portion arranged on the outer side wall of the T-shaped pipe fitting; the tube body and the heat exchanger tube plate are connected through welding, after the welding is completed, the deep pipe of the T-shaped pipe fitting is inserted into the inner side of the tube body, when the T-shaped pipe fitting is inserted, the locking portion is located between the connecting portion and the separation portion, when the deep pipe reaches the connecting position, the T-shaped pipe fitting is rotated, the connecting portion is driven to rotate and drive the locking portion, the position of the T-shaped pipe fitting is locked through the locking portion, at this time, the annular baffle of the T-shaped pipe fitting is protected at the welding joint between the tube body and the heat exchanger tube plate, and fluid washing and corrosion of the welding joint are avoided.

The invention discloses a soil slope reinforcing structure, which relates to the technical field of geotechnical engineering and slope support, and comprises an anchoring beam assembly, an anchor rod assembly and a protective panel, the anchoring beam assembly is arranged at the top of a slope and the lower end is arranged in a soil body; the anchor rod assembly is used for being embedded into a soil body from the inner side of a side slope, the inner end of the anchor rod assembly is used for stretching into a stable soil body area, and the anchor rod assembly is fixedly connected with the anchoring beam assembly; the protection panel is used for being fixedly arranged on the surface of the slope and can be fixedly connected with the outer end of the anchor rod assembly. According to the soil slope reinforcing structure, the overall reinforcing stability of the slope can be improved. The invention further provides a reinforcing method based on the soil slope reinforcing structure.

The application discloses a rotary floating entraining metallurgical nozzle, which comprises a reaction gas channel and a material channel which are sleeved with each other, an entraining channel is arranged concentrically in the reaction gas channel, a rotating shaft is arranged in the center of the entraining channel, a blade assembly is connected to the bottom of the rotating shaft, a driving device is arranged on the top of the rotating shaft, exhaust holes are arranged on the wall of the entraining channel, and the upper ends of the reaction gas channel, the material channel and the entraining channel are not communicated with each other. The application has the advantages of simple structure, better mixing reaction effect of gas and material particles, low smoke dust rate, and more concentrated reaction in the center, thereby effectively reducing the erosion on the wall of a reaction tower.

The utility model relates to the technical field of overflow ports of melting furnaces, and discloses an overflow port structure of a photovoltaic rolled glass melting furnace, which comprises a flow slowing mechanism, a flow control mechanism and a locking mechanism. After molten glass enters the inner wall of the runner, the gentle slope is arranged in the runner and reduces the fall, and meanwhile, the slow flow column is fixed on the outer wall of the gentle slope and slows down the flow speed of the molten glass, so that the molten glass is prevented from directly washing the bottom of the runner, the abrasion of a refractory material is reduced, and the service life of the runner is prolonged; the motor drives the flow pushing plate to rotate through the rotating rod, the flow pushing plate can improve the flowability of molten glass, and the conditions of stagnation, accumulation and the like of the molten glass caused by unsmooth flowing are reduced, so that the generation probability of glass defects such as devitrification and bubbles is reduced, high-quality photovoltaic rolled glass can be produced, and the production efficiency of the photovoltaic rolled glass is improved. And meanwhile, gears are fixed to the outer walls of the rotating rods, the gears are meshed with first gears, the number of the rotating rods is two, and the first gears drive the two rotating rods to move in the same direction.

The invention relates to the technical field of diversion trenches, in particular to a rainwater confluence anti-scouring diversion trench device for a closure slope, which comprises a diversion cylinder, an annular diversion strip arranged in the diversion cylinder, a diversion plate and a diversion cylinder support plate fixedly arranged on the outer side surface of the diversion cylinder, a filter plate arranged on the diversion cylinder, and a mud blocking box arranged on the filter plate. The mud blocking box comprises a mud blocking base and a mud blocking plate, and a mud blocking net is fixedly arranged on the mud blocking plate. The annular flow guide strips arranged in the flow guide cylinder can guide water flow to form annular rotation, water flow deposition is avoided, the flow guide efficiency is improved, the flow guide holes are matched with the filter holes in the filter plate to be connected with the flow guide cylinder, impurities in rainwater can be intercepted, the mud blocking box on the filter plate can further intercept fine silt, blockage is reduced, and all parts of the whole device work cooperatively; from multi-stage filtration to stable diversion, rainwater is effectively prevented from scouring the closure slope, the slope environment is protected, the structure is reasonable, installation and maintenance are convenient, long-term stable operation can be achieved, and the operation cost is reduced.

This invention provides a pressure self-balancing regulating valve based on the stress transmission of a flexible bladder, comprising a valve body, a differential pressure diaphragm core, a balancing plug, a compensating diaphragm, a dynamic flow stabilizing valve, a fine-tuning buoyancy ball, a buffer chamber, a flow resistance adjusting rod, and a pressure equalization resonant cavity. The valve senses the inlet and outlet pressure difference in real time through the differential pressure diaphragm core, driving the balancing plug and flow resistance adjusting rod to automatically adjust the flow cross-sectional area. The compensating diaphragm and dynamic flow stabilizing valve optimize the flow field, the fine-tuning buoyancy ball compensates for high-frequency disturbances, the resonant cavity suppresses pressure pulsation, and the buffer structure absorbs impact energy. It also integrates a sewage discharge filter and a flow guiding and pressure stabilizing structure, possessing advantages such as self-cleaning, low noise, energy saving, and no external power source required. The overall structure requires no electrical control, offers fast response, high precision, and strong anti-interference, effectively solving the problems of traditional pressure reducing valves such as lag, easy clogging, and poor flow stability.

The invention relates to the technical field of laser manufacturing and maintenance, and discloses a device for automatically purifying and passivating a cavity of an excimer laser, and the device comprises a gas supply module which is configured to provide a purifying gas and a passivating gas, and the passivating gas comprises fluorine gas; the cavity connecting port is used for connecting a laser cavity to be processed; a vacuum pump; and an exhaust treatment module fluidly connected between the cavity connection port and the vacuum pump. A dual-mode structure of a first exhaust branch and a second exhaust branch which are connected in parallel is adopted, in the non-passivation emission stage, rapid exhaust is carried out through a large-conductance straight-through branch, a halogen filter with high flow resistance is bypassed, and the vacuumizing time is shortened by about 60% for a standard 100L laser cavity. Meanwhile, a large amount of inert gas is prevented from scouring the halogen filter, physical pulverization and ineffective consumption of the adsorbent are effectively prevented, and the service life of the halogen filter is prolonged.

The utility model discloses a rain-sheltering gallery for garbage transportation, which relates to the technical field of galleries, and comprises a plurality of steel structure bases which are pre-buried and fixed along two sides of a road, and a steel upright post is fixed on each steel structure base; steel beams are connected to the upper portions of the steel stand columns symmetrically arranged on the two sides of the road through side connecting pieces, and the two steel beams are connected through a butt joint connecting piece. When it rains, rainwater can flow to the two sides of the road from the roof panels, the garbage transfer truck can run in a shuttling mode in the corridor formed by the steel stand columns, the steel beams, the purlines and other structures, dirt generated by the garbage transfer truck in the corridor needs to be used for cleaning the road through water, and the cleaned sewage channel enters the sewage channel. Discharging to a leachate treatment station through a sewage channel; rainwater enters the drainage pipe through the roof panel and the water collecting tank on the outer side of the roof panel, so that rainwater and sewage are separated, and the workload of a leachate treatment station is reduced.

A method for adjusting the nozzle water flow in a tail gas absorption tower. Traditional tail gas absorption tower nozzle assemblies have the advantages of simple structure and convenient installation, but they still have their shortcomings. The method of the present invention is as follows: when it is necessary to adjust the water flow rate according to the tail gas emission speed in the tail gas absorption tower, a motor (501) can drive a first rotating shaft (502) to rotate. The first rotating shaft (502) drives a secondary bevel gear (504) to rotate through a main bevel gear (503). The secondary bevel gear (504) drives a rotating wheel (506) to rotate through a second rotating shaft (505). This causes the holes on the rotating wheel (506) and the holes on the fixed wheel (509) to intersect, allowing water to pass through. The size of the intersection of the holes directly affects the water flow rate, thereby controlling the nozzle water flow rate.

The utility model discloses a kind of hopper of increasing iron impurity filtering efficiency, belong to hopper field, comprising: the hopper body with feed inlet and discharge port;Conical shunt screen and magnetic stand are sequentially located in the hopper body along gravity direction, and a plurality of through holes are equipped on conical shunt screen;With the pull connection of hopper body, bearing plate, conical shunt screen and bearing plate are detachably connected, and bearing plate is equipped with passageway communicated with a plurality of through holes. The shape of conical shunt screen is conical or pyramid. Conical shunt screen includes four isosceles triangle plates that are sequentially closed connection, a plurality of through holes are equipped on each isosceles triangle plate, and each isosceles triangle plate is detachably connected with bearing plate. The technical effect of the utility model is that it is convenient to prevent granular finished product from falling in concentrated strand shape in hopper.

This utility model belongs to the field of land ecological environment restoration technology, specifically disclosing a land ecological environment restoration device, including a U-shaped plate. A fixing lug is fixedly connected to the outer wall of the U-shaped plate, and a fixing pin is inserted into the inside of the fixing lug. Arc-shaped surfaces are formed at both ends of the U-shaped plate, and diversion holes are formed inside the U-shaped plate. A water storage component is connected to the U-shaped plate to collect rainwater for subsequent irrigation of vegetation. By setting up the water storage component, the water storage box can store water through the diversion channel and water inlet during rain. After a certain period of time after the rain stops, the seal on the drip hole is opened, allowing the water inside the water storage box to be discharged and used to irrigate the vegetation. This achieves the effect of storing water during rain and subsequently irrigating the vegetation, preventing vegetation from drying out and dying, allowing the vegetation to grow normally, stabilizing the soil on slopes, and restoring the ecological environment of slopes.

The utility model discloses a protection slope for river channel greening, relates to the technical field of river channel protection slopes, and aims to provide a protection slope for river channel greening, which combines a green plant protection slope and a protection slope brick, and comprises a slope body, a flow guide mechanism and a protection slope mechanism are arranged on the slope body, and the protection slope mechanism comprises a protection slope brick, an anchor rod and a connecting nut. A first through hole is formed in the slope protection brick, a first avoiding hole is formed in the first through hole, the anchor rod is fixedly embedded in the slope body, and one end of the anchor rod extends out of the slope body, penetrates through the first through hole and the first avoiding hole and is in threaded connection with the connecting nut; the slope protection brick has the advantages that the plant planting grooves are formed in the slope protection bricks, green plants can be planted in the plant planting grooves, the attractiveness of the slope body is improved, and the defects of pure green plant slope protection can be overcome through combination of the green plants and the slope protection bricks.

The invention relates to the technical field of ocean engineering protection, in particular to an embedded seawall wave-resistant device which comprises at least one energy dissipation unit and a fixing structure, the energy dissipation unit is arranged on the head wave side of a seawall, the energy dissipation unit is constructed to be of an annular structure with a notch in the radial face and is provided with an opening in the axial direction, and the notch forms the head wave face; the fixing structure is fixed in the embankment; through the geometrical characteristics of the energy dissipation units, wave energy is converted into internal mutually-counteracted fluid motion, so that the purpose of actively and efficiently dissipating waves is achieved, and direct scouring of waves to the embankment body is relieved. According to the device, on-site construction installation and subsequent maintenance are facilitated, the arrangement scale and mode of the energy dissipation unit can be flexibly adjusted according to the protection requirement of a specific shoreline, and good adaptability and practicability are shown.

The invention relates to the technical field of slope stabilization, and discloses a unilateral component and a slope protection combination.The unilateral component comprises a component body, connecting parts are arranged on the component body, and the connecting parts comprise the first connecting part, the second connecting part, the third connecting part and the fourth connecting part; the component body is provided with an outer side face and two connecting end faces, the first connecting part and the second connecting part are arranged on the outer side face of the component body, the third connecting part is arranged on one connecting end face of the component body, and the fourth connecting part is arranged on the other connecting end face of the component body; partial connecting parts of the four sets of adjacent component bodies are matched with one another and can be spliced into a structure with a through hole. Compared with an existing bilateral structure formed by splicing hollow hexagonal blocks, the unilateral component and slope protection combination has the advantages that materials can be saved by about 30%; the connecting parts of the four adjacent single-side components are matched with one another, interlocking is achieved, and therefore the slope laid by the single-side components is more stable.

The utility model relates to the field of building waterproofing, and discloses a waterproof structure and a roof waterproof system.The waterproof structure comprises a waterproof layer, a protection piece and a filling piece, the waterproof layer is laid on a roof, the tail end of the waterproof layer extends into a groove formed in the vertical face of a parapet wall, and the protection piece comprises a first plate body and a second plate body; the waterproof layer is pasted and covered with the first plate body, the first plate body is located on the lower side wall of the groove, the outer end, away from the bottom wall of the groove, of the first plate body extends to a groove opening of the groove, and the second plate body obliquely extends downwards in the direction away from the parapet wall from the outer end of the first plate body; the space between the first plate body and the upper side wall of the groove is filled with the filling piece. According to the waterproof structure, the integrity of the waterproof layer can be ensured, the leakage risk is reduced, the overall waterproof effect of the waterproof layer is remarkably improved, and meanwhile the later maintenance cost is reduced.

The utility model relates to the technical field of water conservancy projects, and discloses a water conservancy project slope protection device which comprises a slope body, a plurality of brick bodies are fixedly connected to the top of the slope body, a frame body is supported outside the brick bodies, and a plurality of fixing mechanisms are fixedly connected to the top of the slope body. The multiple fixing mechanisms are clamped in the middles of the multiple brick bodies, the exteriors of the multiple fixing mechanisms are clamped in the frame body, each fixing mechanism comprises a shell, the outer bottom side of each shell is fixedly connected to the interior of the slope body, and a drill bit is fixedly connected to the bottom of each shell. According to the utility model, when the pressing block is pressed, pressure is transmitted to the propping column, so that the propping column smoothly slides down in the shell, and along with the downward movement of the propping column, the side nail smoothly expands towards the interior of the slope body and pierces into the slope body by means of the side groove in the bottom side of the shell, so that the problems of insufficient anchoring force and poor fixing effect of an anchorage device fixing mode are solved; and the stability of the slope protection structure is ensured.

The invention relates to the technical field of refractory materials, and provides a protective device and a protective method for a cement kiln coal injection duct, the cement kiln coal injection duct comprises a coal injection duct body and a refractory lining body arranged on the periphery of the coal injection duct body, and the protective device for the cement kiln coal injection duct comprises a sleeve arranged on the periphery of the refractory lining body in a sleeving mode, an annular cavity is formed between the sleeve and the refractory lining body; one axial end of the annular cavity is communicated with the cement kiln, and the other axial end of the annular cavity is communicated with the outside. According to the protection device and the protection method for the coal injection duct of the cement kiln, primary air provided by the coal injection duct in an operation state can enable negative pressure to be naturally formed in the annular cavity while entraining high-temperature secondary air to enter the cement kiln, so that external airflow is brought in to realize automatic cooling of flowing-through parts such as a refractory lining body and a sleeve; scour and erosion of high-temperature flue gas carrying clinker particles are avoided, and the service life of the coal injection duct of the cement kiln is prolonged.

This invention relates to the field of gas purification equipment technology, and discloses a helium purification device, including a purification device body, an emergency mechanism and a protective mechanism disposed inside the purification device body. The emergency mechanism includes a transfer chamber, a baffle plate slidably disposed inside the transfer chamber, a diversion pipe with one end fixedly connected to the surface of the transfer chamber, the baffle plate disposed on one side of the diversion pipe, and two transmission gear plates, each of which is slidably disposed inside the transfer chamber. When the purification device body malfunctions, the baffle plate is pulled and moves, releasing the blockage on one side of the diversion pipe, allowing helium to be delivered to the interior of the abnormal reaction chamber through the diversion pipe. With the action of the emergency mechanism, this helium purification device can effectively avoid direct equipment shutdown due to electric ball valve failure, and also prevent a large influx of helium from impacting the diversion pipe.

This utility model discloses a paddy field zoned water diversion and distribution device, relating to the field of paddy field irrigation canal technology. It includes a main irrigation canal with several branch irrigation canals connected to both sides. A closure assembly is provided between the main irrigation canal and the branch irrigation canals. A partition is installed between the inner walls of both sides of the main irrigation canal. A water-fertilizer pipe is placed on the upper part of the partition. Several water-fertilizer branch pipes are fixedly connected to both sides of the water-fertilizer pipe, and a regulating valve is installed on each water-fertilizer branch pipe. The paddy field zoned water diversion and distribution device, by setting up the partition, separates and supports the water-fertilizer pipe, thus preventing the water-fertilizer pipe from being submerged in the main irrigation canal, avoiding water flow erosion of the water-fertilizer pipe surface, and thereby reducing wear on the water-fertilizer pipe surface. Simultaneously, it also prevents silt in the main irrigation canal from obstructing the water flow (due to water-fertilizer pipe blockage), thus effectively improving the practicality of the paddy field zoned water diversion and distribution device.

This invention provides a pile foundation structure for offshore wind turbine towers, belonging to the field of offshore wind power technology. The pile foundation structure includes a pile cylinder extending vertically along its axis and cast-in-place piles fixedly installed at the bottom of the pile cylinder. The pile cylinder and the cast-in-place piles are coaxially arranged. Each cast-in-place pile includes a pile tube. Multiple support fins extending along the axial direction are fixedly installed on the outer wall of the pile tube, evenly distributed along the circumference of the pile tube. A protective cylinder is slidably sleeved on the outer wall of the pile cylinder. A fixing plate is fixedly sleeved on the outer wall of the pile cylinder, located above the protective cylinder, to limit the movement of the protective cylinder along its axial direction. A protective frame is fixedly sleeved on the bottom of the outer wall of the protective cylinder. The protective frame includes a fixing disc coaxially arranged with the protective cylinder. Two sets of protective components are fixedly installed at the bottom of the fixing disc to prevent the pile cylinder from sinking and tilting due to geological changes after long-term use.

The application discloses a protection device for preventing pile foundation scouring and relates to the technical field of offshore wind power, which comprises reinforced meshes, the reinforced meshes are multiple, each reinforced mesh is sequentially connected to form a reinforced net structure, the reinforced net structure is arranged on a seabed around a pile foundation and is used for fixing the seabed, a filler reinforcing area is formed in the reinforced mesh, the filler reinforcing area is filled with a filler to reinforce the seabed, and a grid net for hindering silt loss is arranged in the filler reinforcing area. The protection device for preventing pile foundation scouring is arranged on the seabed around the pile foundation through the reinforced net structure formed by sequentially connecting multiple reinforced meshes, and the filler and the grid net in the filler reinforcing area can reinforce the seabed and prevent silt loss. Since the protection device reinforces the seabed around the foundation and is not affected by the structure form of the pile foundation, the applicability of the pile foundation protection device is improved.

This invention discloses a comprehensive ecological revetment system for river channels, relating to the field of ecological revetments. It includes natural earthen slopes along both sides of a river channel, with slope one and slope two constructed on these slopes. A horizontal lower walkway is provided between slope one and slope two, and an upper walkway is provided on the upper side of slope one. An erosion-resistant bank is constructed on the slope two near the river channel. This invention reinforces and protects the riverbank near the water's edge using an erosion-resistant filler composed of revetment bricks, mixed soil, a middle layer of backfill soil, and a top layer of planting soil. Simultaneously, the root system of the planted vegetation extends to protect soil and water, effectively preventing soil erosion. Furthermore, the erosion-resistant bank formed by reinforced steel grids as foundation piles further strengthens the revetment, maximizing protection against erosion. The floating green vegetation layer effectively conceals the clear boundary between the river surface and the riverbank edge.

The utility model discloses a urine specimen preservation device in the technical field of urine specimen preservation, which comprises a cup body and a cup cover clamped with the cup body, the top of the cup body is clamped with an annular support table, the bottom of the support table is provided with an annular groove filled with preservative liquid, and the annular groove is provided with a sealing film; the supporting table is provided with safety holes and insertion holes in a staggered mode, the cup cover is fixedly provided with push rods inserted into the safety holes or the insertion holes, the cup body is rotationally connected with a swing rod, the swing rod is fixedly connected with a push plate in a sleeved mode, and the push rod is inserted into the insertion holes to push the push plate to rotate towards the sealing film and tear off the sealing film. According to the invention, the use safety can be improved.