104results about How to "Reduce scour force" patented technology

The invention discloses a cast steel part for an ultra-supercritical thermal power generating unit. The cast steel part is characterized by being prepared from the following chemical components in percentage by weight: 0.15 to 0.20% of C, not greater than 0.60% of Si, 0.4 to 0.8% of Mn, not greater than 0.02% of P, not greater than 0.015% of S, 2.2 to 2.5% of Cr, not greater than 0.5% of Ni, 0.5 to 0.8% of Mo, not greater than 0.5% of Cu, 0.3 to 0.4% of V, and the balance of Fe and inevitable micro impurities. The invention further discloses a process for producing the cast steel part. The cast steel part is high in wear resistance, corrosion resistance and heat resistance, high in toughness, and applicable to the ultra-supercritical thermal power generating unit.

The invention discloses a garden type rainwater impact resistance system used for a residential area road. The system comprises a permeable driving road surface system, a permeable walking road surface system, an overflow type shallow grass groove system and an overflow type rainwater garden system, wherein the overflow type rainwater garden system is located at the tail end downstream position of the overflow type shallow grass groove system; the permeable driving road surface system and the permeable walking road surface system are located on the two sides of the overflow type shallow grass groove system and the overflow type rainwater garden system respectively; road surface runoff rainwater of the permeable driving road surface system and the permeable walking road surface system is laterally drained into the overflow type shallow grass groove system and the overflow type rainwater garden system; rainwater in the overflow type shallow grass groove system overflows into the downstream of the overflow type rainwater garden system. The LID technology for processing the rainwater and the traffic calming technology are combined, and the system can achieve initial purification of the road surface runoff rainwater in a resident area, reduction of total externally drained runoff quantity and effective buffering of road runoff flood peak flow when rainstorms happen, and can promote road vehicles to slow down to solve the traffic safety problems such as overspeed of the vehicles; in addition, the system can be sufficiently combined with the surroundings, and a certain landscape effect is formed.

The invention relates to a water-fluctuation zone self-locking wave-dissipation vegetation ecological slope protecting components, which consists of two bricks with foursquare as basic shape; wherein, one of the brick is provided with linked grooves at four sides thereof respectively, a cell body is arranged in the middle of the brick, which has an upward heave and a planting hole in the middle, and a counter-arc jettied convex body is mounted on periphery adjoiner of the superface cell body of the brick; the other brick is provided with linked wedge blocks for intercalation with the linked grooves, a cell body is also mounted in the middle of the brick, and counter-arc jettied convex body is arranged on periphery on periphery adjoiner of the superface cell body of the brick; the undersurfaces of the two bricks are provided with wedges to wedge into soil; the cross-sectional shape of the counter-arc jettied convex body is similar to an isosceles trapezoid, while the upper bottom is larger than the lower bottom and the two waists are in the shape of arc. The invention realizes connection between two components of two bricks by using four-side self-locking structure, which features high stability, strong adaptability, good effect of wave dissipation and environmental protection.

The invention provides a self-maintenance anti-washing device of an offshore wind power pile foundation. The self-maintenance anti-washing device comprises the pile foundation, an isolation barrel, anouter supporting frame assembly and an isolation shade assembly. The pile foundation is mounted at the upper end of a seabed. The outer side of the pile foundation is connected with the isolation barrel in a sleeved manner. The bottom of the isolation barrel is fixed to the upper end of the seabed. The outer side of the isolation barrel is fixedly connected with the outer supporting frame assembly. Drive assemblies are mounted at the positions, corresponding to pushing assemblies, of the outer side of the isolation barrel. First grooves are vertically arranged at the positions, located on thedrive assemblies, of the outer side of the isolation barrel. First rack rods are vertically arranged at the positions, corresponding to the first grooves, of the outer side of the isolation barrel. Arepair device is mounted at the upper end of the pile foundation. A second rack rod is vertically and fixedly connected to the inner side of the isolation barrel. The repair device and the second rack rod are in transmission connection. According to the self-maintenance anti-washing device of the offshore wind power pile foundation, the problems that existing offshore wind power pile foundationsare prone to being washed and corroded by sea water, the pile foundations are not stable, workers need to maintain the pile foundations frequently, time and labor are wasted, meanwhile, the anti-washing effect is poor, silt beside the pile foundations cannot be blocked, and the situation that concave pits are formed by washing cannot be avoided are solved.

The invention discloses a casting method of a high-powered engine box casting. The casting method comprises the steps of preparing moulding sand, performing modeling and core making to obtain a sand mould, preparing pouring iron liquid, taking pig iron, foundry returns and waste steel as raw materials to be fed into a smelting furnace to be smelted, carrying out in-package inoculation and spheroidization on the smelted iron liquid, carrying out stream inoculation before tapping, then carrying out tapping, pouring the iron liquid into the sand mould, carrying out stream inoculation, adopting acold iron riser process for feeding and temperature control, forming a casting after pouring is finished, and carrying out treatment on the formed casting. The obtained casting is good in quality, andquality problems of core clamping, shrinkage, cracks and the like are not prone to happening.

The invention relates to the field of highway roadbed maintenance, in particular to a highway roadbed disease treatment method. The highway roadbed disease treatment method comprises the following steps of S10, arranging grouting holes; S20, arranging drainage holes; S30, grouting for blocking; and S40, grouting for compacting and reinforcing. According to the scheme, when being used, the highwayroadbed disease treatment method can achieve the following effects that 1) the grouting holes and the drainage holes are accurately arranged according to the extreme value theory and the effective radius of the single-hole diffusion, so that the accuracy of the diffusion range of slurry and the economization of the disease treatment cost are realized; 2) the diffusion range of the slurry for grouting and the end time of grouting can be precisely controlled, so that the situation that a large amount of slurry is wasted and the normal operation of a tunnel is affected due to the fact that the mud slurry flows out of a roadbed along a gap is avoided; and 3) the drainage function is utilized, so that the flushing force of a disease core area to the slurry is slowed down, and the range of the slurry diffusing along a drainage pipe is lager.

The invention relates to the technical field of flood discharge channels, in particular to an energy dissipation strip type flood discharge device. The device comprises a straight-section flow channel and a bent-section flow channel. At least one energy dissipation strip set is fixedly installed at the upper end of the bottom of the bent-section flow channel in the flow direction. The energy dissipation strip set comprises three energy dissipation strips which are overlaid and can cover the section of the bottom of the bent-section flow channel. The three energy dissipation strips are distributed at intervals in the flow direction, and every two energy dissipation strips are staggered. Each energy dissipation strip can comprise an energy dissipation rubber strip and a rubber strip installation base for fixing the energy dissipation rubber strip to the bent-section flow channel. The energy dissipation strip type flood discharge device is reasonable and compact in structure and convenient to use. The three energy dissipation strips in each energy dissipation strip set can be overlaid to cover the section of the bottom of the bent-section flow channel and form an energy dissipation barrier, the original water flow trend is disorganized, water flow is disordered, the flow speed is decreased, and water flow potential energy is reduced; the device can be well applied to low-falling-head and small-flow hydraulic potential, impact and scouring intensity of water flow for a flood discharge channel wall is reduced, safe and stable operation of a hydraulic power plant is ensured, and canal collapsing accidents are avoided.

The invention discloses an ecological treatment method for a side slope of a stony desertification area. The method comprises the following steps that (1) slope terrain finishing and danger removal are conducted; (2) the slope is subjected to slope-to-terrace engineering; (3) the side slope is subjected to slope net hanging and anchor rod construction; (4) a drainage system is arranged on the sideslope; (5) through a spray-seeding mode for a loam-similar medium, the side slope is subjected to seed spray-seeding including spray-seeding for a substrate layer and a surface layer of the loam-similar medium; (6) the side slope is subjected to care management, wherein non-woven fabric covers the surface layer of the loam-similar medium and is fastened, and watering, fertilization, prevention and treatment of diseases and pests, seed supplement and later monitoring are conducted. According to the ecological treatment method for the side slope of the stony desertification area, the soil structure is reasonable and stable, the ecological system can be quickly formed, and the method is stable.

The invention relates to a buffer structure which comprises concrete substrates, wherein the periphery of each concrete substrate is respectively provided with at least one joint groove relatively; the concrete substrates are provided with a plurality of buffer components; the periphery of each buffer component is correspondingly provided with fixing holes, a plurality of first joint components and a plurality of second joint components; the first joint components penetrate through the fixing holes for connecting the buffer components in series; and the second joint components are embedded in the joint grooves to connect the plurality of concrete substrates with the same structure. The buffer structure is paved around a bridge or a dike of a river for buffering the impact of flood torrent by the buffer components in order to avoid scouring or caving the dike or the bridge of the river.

A nested type top overflowing gate is mainly characterized in that a large gate leaf is in movable nested connection with a small gate leaf, and a flip bucket is arranged at the upper end of the small gate leaf in the downstream side direction, so that water flow can overflow from the top of the gate to form open weir flow, and water diversion capability can be improved while washout force is decreased; and clear upper-layer flood resources can be used to enter downstream along with main flow while bed load sediment is still blocked in an original riverway, and vibration of the gate caused by the washout force can be avoided. The nested type top overflowing gate is flexible and convenient to open and close and small in gate opening force. Meanwhile, the nested type top overflowing gate can be used normally on the basis of not changing other water gate buildings such as water gate bottom plates, gate piers and opening and closing equipment but the gate, and is less in investment, good in flood resource use effect and high in feasibility.

The invention relates to a novel serially-connected blowdown valve. The blowndown valve comprises two blowndown valve single bodies. Each of blowndown valve single bodies comprises a valve body, an upper cover, a valve core assembly, a valve seat, a stuffing box, a support stand rod, a lead screw seat, a limit anti-rotating block and a hand wheel. The valve bodies are connected with the lower parts of the upper covers via bolts and screws so that fluid pressure bearing middle cavities are formed and then sealed by metal spiral wound gaskets. The upper parts of the upper covers are sealed by the stuffing box assemblies. The valve core assemblies are installed in the pressure bearing middle cavities. Each of the valve core assemblies comprises a sleeve, a valve core and a valve rod, wherein the sleeve is directly pressed on the valve seat and the upper end is fixed by the upper cover; and the valve core and the valve rod are integrated and capable of up-down sliding in the sleeve. The blowndown valve single bodies are serially connected together, so great differential pressure is equally divided on two blowndown valves. Thus, flow rate of the fluid is reduced, scouring force on inner pieces of the valve body by the fluid is effectively reduced and service lifetime of the blowndown valves is extended.

The invention discloses a pulse backwashing deep bed filter device and a method, and belongs to the technical field of automatic control. A set of device may be provided with 1, 2.....n pulse backwashing deep bed filters; the pulse backwashing deep bed filter comprises a casing, a water collection mechanism arranged on the lower part of the casing and a connecting tube thereof, a water distributing mechanism arranged on the upper part of the casing and a connecting tube thereof, a filter material cushion layer arranged on the lower part of the casing, a filter material arranged in the middle part of the casing, and a filter material height detection device arranged on the upper part of the casing; a backwashing pump is a centrifugal pump, the rotating speed of an arranged motor can be regulated in variable frequency; a flow detection device is arranged on a main backwashing pipeline of a backwashing pump outlet; a control cabinet is provided with a PLC (programmable logic controller), and also provided with a frequency converter for regulating the rotating speed of the backwashing pump; the flow detection device and the filter material height detection device are provided with detection signal output ends which are connected with signal acquisition ends of the PLC. The effect of the pulse backwashing deep bed filter device is that: water-saving high-efficiency cleaning of a filtering layer can be performed by used of backwash water producing flow fluctuation.

The invention discloses a vetiveria zizanioides and grass blanket combination based green slope protection method. The method comprises the steps of planting vetiveria zizanioides (1) on a side slope (3), laying the front end of a grass blanket (2) in an anchoring ditch (4), fixing the grass blanket (2) by using a fixing piece (5), then covering the ditch with soil and treading down the soil; laying the grass blanket (2) by expansion from top to bottom; and forming an opening by using a tool in a position where the vetiveria zizanioides (1) is met, sorting out the vetiveria zizanioides (1), arranging the grass blanket (2) flatly, and fixing the grass blanket (2) by using the fixing piece (5). According to the vetiveria zizanioides and grass blanket combination based green slope protection method, during the early stage, rainstorm is prevented from washing out the side slope and the unstable vetiveria zizanioides depending on an anti-washout function immediately generated after the grass blanket is laid; and during the later stage, with the degradation of the grass blanket, the projects such as the side slope and the like are protected from being washed out by atmospheric precipitation and surface runoff depending on a living protective layer formed by a dense and netty fibrous root system formed by gradual growth of the vetiveria zizanioides in the ground and a strong steam leaf hedge formed by gradual growth of the vetiveria zizanioides on the ground, thereby achieving the purposes of stabilizing a soil body, conserving water and soil, improving the environment and preventing disasters.

The invention relates to a gasification furnace and a method for gasifying molded coal. According to the invention, a plurality of grooves are provided on the inner wall of the hearth of the gasification furnace, the grooves separate the inner wall of hearth from the outer wall of a charcoal layer, and a groove type ascending pipeline is formed; high temperature flames and high temperature gas which have been horizontally sprayed to all the grooves are quenched and cooled in time during heat exchange with the inner wall of a water jacket, the cooled high temperature gas with dust undergoes heat exchange with the wall of the water jacket, the charcoal layer and a fireproof wall along the way during ascending in each groove so as to get further cooled, the dust scatters on the surface of the charcoal layer and in the grooves when the cooled gas is sent out through the ascending pipeline, descending down blow steam in each groove undergoes heat exchange with the wall of the water jacket, the charcoal layer and the fireproof wall along the way, and superheated steam brings the scattered dust in each groove into the charcoal layer for gasification and slagging. The invention enables the phenomenon that molded coal hangs on a wall during gasification to be effectively prevented, the height of a gasification layer to be stabilized, system resistance to be reduced and energy saving and consumption reduction to be realized.

The invention discloses a road surface rainwater side drainage and permeation structure and a construction method. The structure comprises a percolation ditch formed by recessing a roadbed basal plane, wherein curb curbstone is vertically arranged on the roadbed basal plane on at least one side of the percolation ditch in a supporting mode, the curb curbstone extends in the length direction of theroadbed, and a space formed by the percolation ditch and the curb curbstone is filled with a percolation layer used for percolating rainwater. A plurality of drainage through holes are formed in thecurb curbstone, the drainage through holes are sequentially distributed in the length direction of the curb curbstone at intervals, the water inlet end of each drainage through hole is communicated with the road surface of a road layer laid on the roadbed basal plane, and the drainage ends of the drainage through holes are communicated with the percolation layer so as to enable rainwater on the road surface to seep into the percolation layer. According to the road surface rainwater side drainage and permeation structure, when rainwater is drained through the plurality of drainage through holes, the drainage rate can be increased, the scouring force of drainage on the roadbed and a green belt soil body is reduced at the same time, and scouring water damage to the roadbed and the green beltdue to too large rainfall is avoided.

The invention provides an online pH measurement device of a high-temperature strong-washing neutralization solution. The device comprises a measuring sampling tube, a pH meter, a pneumatic telescopicprotecting sleeve for fixing the pH meter and a cleaning control device, wherein a water inlet, a water outlet, a testing hole and a drain outlet are formed in the measuring sampling tube; the pH meter is fixedly arranged on a push rod of the pneumatic telescopic protecting sleeve; the pneumatic telescopic protecting sleeve is arranged at the testing hole and detachably connected with the measuring sampling tube, and a washing water inlet and a washing water outlet are formed in the pneumatic telescopic protecting sleeve; the washing water inlet is connected with clear water through a water pipe, a washing water electromagnetic valve is arranged at the washing water inlet, and the washing water outlet is connected with a trench through a water pipe; the cleaning control device comprises aDCS control system, and the DCS control system is provided with a main relay and a cleaning relay. Online measurement of the high-temperature strong-washing neutralization solution is realized, and the device is simple in structure, capable of performing automatic cleaning, convenient to operate, long in online testing time, stable in operation and accurate in measurement result, can reduce blocking and provides convenience for environment-friendly drainage.

Provided is a fan-shaped water tap water outlet. A cavity fan-shaped water tap body is arranged, the front portion of the cavity fan-shaped water tap body is wider than the rear portion of the cavity fan-shaped water tap body, one end of the cavity fan-shaped water tap body is a pipe-shaped connector with outer threads, the other end of the cavity fan-shaped water tap body is a strip-shaped clearance, and the strip-shaped clearance is communicated with an inner cavity of the cavity fan-shaped water tap body. The cavity fan-shaped water tap body is connected with a water tap through the outer threads on the pipe-shaped connector. According to the fan-shaped water tap water outlet, the shape of a traditional water tap water outlet is changed, the superficial area of water which flows out is increased, scouring force of water flow is not lowered, daily washing time is shortened, and the purpose of saving water is achieved.

The invention discloses a concrete pavement construction concrete nursing and watering device, and belongs to the field of concrete pavement nursing. The concrete pavement construction concrete nursing and watering device comprises a watering cart body, an electric telescopic rod is fixed to the watering cart body, a slide plate is slidably connected to the watering cart body, the electric telescopic rod is connected with the right side of the slide plate, and a hollow water pipe and a water pump are fixedly connected to the slide plate. The purpose that sodion exchange resin in a floating exchanging ball can absorb calcium ions and magnesium ions in water can be achieved, the rigidity of the water is effectively lowered, the scouring force of water flow on cement is lowered, the water flow is ejected leftwards through a flat water outlet nozzle, since sodion-exchanged calcium ions and magnesium ions contained in the floating exchanging ball are dissolved into the ejected water flow, a static electricity rod for attracting negative charges on the flat water outlet nozzle approaches the ejected water flow and applies upwards and rightwards acting force to the water flow, and the downward scour of the water flow is lowered.

The invention discloses an inner barrel of a cement preheater. The inner barrel comprises a barrel body, wherein the inner wall of the barrel body is provided with a buffer layer; the inner wall of the buffer layer is provided with arc-shaped ceramic hanging pieces and a connecting block which is used for connecting the ceramic hanging pieces; the top ends of the ceramic hanging pieces are provided with two buckles which extend upwards; each buckle comprises a horizontal base plate; the two sides of each base plate are provided with an upper side wall and a lower side wall which extend upwards in upper and lower reverse directions; each upper side wall is provided with a first screw hole; the lower ends of the ceramic hanging pieces are provided with two blocking holes for allowing the buckles to block; the connecting block, corresponding to the two first screw holes, is provided with two second screw holes; when the two ceramic hanging pieces are assembled, the buckles are blocked into the blocking holes; gaps between the buckles and the front side walls of the ceramic hanging pieces can be matched for accommodating the connecting block; and the first screw holes and the second holes are aligned. According to the inner barrel of the cement preheater, seamless connection between the ceramic hanging pieces is achieved, tightness is strong, the barrel body is protected from corrosion in a facilitated mode, and the service life of the barrel body is prolonged.

The invention discloses a washing-resistant special high-pressure ceramic valve, and relates to the technical field of high-pressure ceramic valves, the washing-resistant special high-pressure ceramic valve comprises a rotary table, the lower end of the rotary table is fixedly connected with a washing-resistant mechanism, the washing-resistant mechanism comprises a gradual change ring and a washing wheel mechanism, the washing wheel mechanism comprises a wheel sheet mechanism, the wheel sheet mechanism comprises a copper sheet plate, and the copper sheet plate is fixedly connected with the washing wheel mechanism. A connecting mechanism is fixedly connected to one side of the washing-resistant mechanism and comprises a sealing ring mechanism and an inner pipe. Internal high-speed and high-pressure substances impact the wheel sheet mechanism, the hexagonal ring, the oval ring and the two copper sheet plates form a basic frame, rotation is easier, after the high-speed and high-pressure substances enter the flow direction pipe and make contact with the guide groove, rotation of the wheel sheet mechanism is accelerated, the inner wall of the ceramic valve is prevented from being directly scoured, and the service life is prolonged. Centrifugal force generated by rotation of the wheel sheet mechanism, the connecting shaft sleeve and the rotating shaft further counteracts the scouring force, the problem that the scouring force of internal substances is too large is solved, and the effects of weakening the scouring force from multiple angles and improving the wear resistance of the ceramic valve are achieved.