528results about How to "Avoid silting" patented technology

The invention provides a water jacket structure for a cylinder head, and can realize improvement of cooling efficiency of a collector while suppressing increase of the amount of cooling liquid. The water jacket structure for the cylinder head is characterized by having a plurality of upper combustion chamber portions (21), a plurality of intake openings (22) and a plurality of exhaust openings (23), a collector (24) collecting the plurality of exhaust openings inside the cylinder head, and a outlet water jacket (70) cooling the collector (24). The outlet water jacket (70) has an upper outlet water jacket (80) and a lower outlet water jacket (90) which are respectively arranged at upper and lower sides in a cylinder axis (Lc) direction relative to the collector, and form mutually independent flow channels within the cylinder head (2).

A method for cleaning the water in river and lake features that the stream generating and aerating apparatus is arranged in the water of river or lake to generate artificial streams and increase the content of O2 in water for changing the river or lake into a contact-oxidizing aerating pool, and the biological-bed filler is arranged in each stream path to decompose the organic pollutants in water. Said apparatus is composed of turbulence pump, water inlet pipe and outlet pipe with single-pole magnetic rings, and mixing pipe.

The invention discloses a debris flow guiding slot based on a step anti-erosion toothed sill group and the application thereof. The slot structurally comprises beam side walls and a step anti-erosion toothed sill group which is arranged between the walls, connected and matched with the same; the step anti-erosion toothed sill group comprises a plurality of anti-erosion toothed sills with a certain depth, and every two steps are distributed by a certain spacing; the two anti-erosion toothed sills are symmetrically distributed on the left side and the right side relative to the centerline of the guiding slot between the beam side walls to commonly form one step of the step anti-erosion toothed sill group; and the width D of the debris flow guiding slot is more than two times of horizontal length B of the anti-erosion toothed sills in the vertical direction of the beam side walls. Compared with the prior art, the invention can meet the requirements on the excretion of fluid with quite great changes from thin debris flow to mountain flood, can fully keep the up and down relationship of aquatic organisms in a gully, is beneficial to the ecological restoration a channel, can fully guarantee the stability of the beam side walls, is not easy to have debris flow deposition under the circumstance that the gradient of the gully is quite small, and is beneficial to long-termed operation.

The invention relates to a method for processing radioactive wastes, which comprises the following steps of: 1) heating the radioactive wastes to obtain hot gas with trace 134Cs or 137Cs nuclide and dehydrated or carbonized solid wastes, encapsulating the dehydrated or carbonized solid wastes by a nuclear waste processing container or cement, and carrying out step 2) to the hot gas with individual trace nuclide; and 2) quenching and extracting the hot gas with individual trace nuclide. The invention provides a method for processing radioactive wastes, which is capable of manufacturing a movable processing device, reduces storage space and avoids heavy pollution to the environment and is low in storage cost.

The invention discloses an in-trench water-stone separation siphoning-drainage debris flow control method. A series of permeable pipes are disposed in a trench in an area for formation or passage of debris flow, and drain siphons are connected to downstream ends of the permeable pipes. When the water level of rain flood reaches the siphoning level, water permeating into the permeable pipes is drained to the downstream safety trench through the drain siphons so that dynamic strength of the water in the trench is reduced. Using the method can effectively control formation and passage of debris flow and solve treatment methods for debris flow trenches on different scales, and control engineering is simple in construction and high in adaptability. Gravity flow is converted into full in-pipe flow under the action of siphoning drainage, and drainage efficiency is improved. Pipe sedimentation can be prevented under the suction action of siphoning. Diverted drainage in the case of high water level has low impact on the hydrological environment of the trench.

The invention relates to a sediment releasing method for a water intake of a low-head river channel pivotal power station and belongs to the field of water conservancy projects, under the IPC numbers of E02B9/00, E02B9/04 and E02B1/00. According to the method, a sediment trap is arranged along the whole front edge of the power station water intake, a gallery for sediment transport is arranged in front of the sediment trap and connected with a dam base sediment tunnel, the top of the gallery for sediment transport is provided with a horizontal joint sediment outlet, the width of the horizontal joint sediment outlet gradually increases from the upstream, the cross section of the gallery for sediment transport gradually increases from the upstream. The sediment trap is used with the variable width joint type gallery for sediment transport so as to achieve the function of an intercepting channel, an elongated scour funnel can be formed in front of the sediment trap, and the sediment releasing effect that sediment is released in front of the power station water intake is truly achieved.

The invention relates to a design method for an inflow channel of a cyclone grit basin with a trapezoid cross section. Each side wall of the channel has a certain gradient, namely, the whole channel has a trapezoid cross section. According to the design method, under appropriate parameters, the flow rate in the inflow channel is prevented from greatly changing following the change of inflow flux and is always within the optimal de-gritting flow scope of the cyclone grit basin. According to the design method, the cyclone grit basin can be always kept in a high-efficient de-gritting state in a large water quantity fluctuation scope, and the silt sedimentation at the bottom of the inflow channel can be effectively prevented. The reconstruction technique for a present inflow channel is simple according to the design method and is convenient and feasible.

The invention relates to a system for processing radioactive wastes, which is integrated in a movable shelter including a volume-reduction device and a tail-gas processor connected to a pipeline of the volume-reduction device; and both the volume-reduction device and the tail-gas processor are placed in a vacuum environment. The invention provides a movable system for processing radioactive wastes, which reduces storage space, causes little pollution to the environment and is low in storage cost.

The invention discloses a method for improvement and protection of a spur dike channel of a mountain river. The method comprises the steps that (1) the channel improvement water level and the channel improvement line width are determined according to the direction of the channel, the planned line form, the hydrological characteristics of the river, the riverbed components and the erosion and deposition evolution characteristic, and (2) the position and the length of a spur dike are determined according to the shipping hindering characteristic of a dangerous shoal and the improvement line width. The method for improvement and protection of the spur dike channel of the mountain river is characterized by further comprising the steps that (3) a dike body structure is laid, wherein a layer of block shaped like the twisted Chinese character 'Wang' is laid on the downstream slope of a dike body; (4) the bottom of the head of the dike is protected; (5) the bottom of the root of the dike is protected; (6) a bank protection structure is arranged. The method is particularly suitable for improvement and protection of the spur dike channel of the mountain river, the strength of the root of the dike and the strength of the head of the dike can be improved, stronger current impact force can be resisted, the overall service life is prolonged, and the method has the advantages of being capable of preventing sediment accumulation, stabilizing a riverbed, protecting the ecological environment and achieving safe flood discharging.

The invention discloses a pump station base, a pump station and a mounting method for the pump station. The pump station base comprises at least one hollow portion, each hollow portion is provided with at least one pouring portion, and filler can be poured into the hollow portions through the pouring portions. In the site mounting process, concrete is poured into the first hollow portion, the weight of the pump station base is increased, the bearing capacity of the pump station base is enhanced, the pump station can be mounted reliably, the running stability of the pump station is improved, and a large amount of raw material cost is saved. The pump station comprises the pump station base.

The invention relates to the technical field of sewage, in particular to an automatic drainage type sewage well lid preventing water accumulation. The automatic drainage type sewage well lid preventing water accumulation comprises a pavement. The top of the pavement is fixedly connected with a well lid. The bottom of the well lid is provided with water discharging grooves distributed evenly. A water accumulation groove is formed in the middle of the well lid. The middle of the water accumulation groove is connected with a floating board which is movably connected with the inner wall of the well lid. The top of the floating board is fixedly connected with a moving rod which is movably connected with the middle of the well lid. A water inlet hole is formed in the middle of the moving rod. According to the automatic drainage type sewage well lid preventing water accumulation, by means of cooperative use of water linkage holes and the water discharging grooves, when rainwater is excessive,the rainwater enters the water accumulation groove through the water leakage holes and the water inlet hole, the floating plate can move upwards under the action of buoyancy of rainwater, the movingrod is moved upwards, sector fans are driven to be folded inwards, water drainage holes and the water discharging grooves are exposed, the water flow of the well lid is increased, and therefore the effect of facilitating drainage is achieved; and in this way, the rainwater discharge flow is increased, and rainwater accumulation is effectively avoided.

The invention provides a tank bottom sludge discharging device for an oilfield sedimentation tank. A tank body is provided with a sludge bearing bottom plate and a sludge collection chamber, the sludge collection chamber is connected with a sludge discharging pump, a sedimentation tank center pipe is connected with a center support connected with a driven gear, the driven gear is in meshed connection with a driving gear, a shaft of the driving gear is connected with a gear motor through a coupling, the gear motor is fixedly connected with a sleeving pipe outside the tank top, four groups of frameworks are fixedly and radially connected around a shaft of the driven gear, bottoms of the frameworks are connected with sludge scraping plates. Sludge is discharged through a tank bottom sludge removal system, the problem of sludge sedimentation at the tank bottom is solved, sludge is discharged thoroughly, no dead zone exists, water resources are saved, the device adopts a mechanical structure and is stable in operation and reliable in performance, a mechanical part of the tank bottom of the sedimentation tank is free of welding structures, a bolt fastening connection method is adopted, an ultrasonic interface sensor is arranged, the automatic tank bottom sludge removal system sets parameters such as the starting frequency, the working time and the like of the device through programs, sludge collection and sludge discharging are controlled automatically and regularly through the programs, and full-automatic operation of the system is realized.

The invention discloses a combined stereoscopic water culture device and method. The combined stereoscopic water culture device comprises a plurality of water culture boxes, wherein the plurality of water culture boxes are placed in a superposed and combined manner, a first water overflow column, a second water overflow column and a third water overflow column are arranged in each water culture box, a fixed round pipe vertically penetrates through the water culture boxes, a plurality of planting holes are formed in the peripheries of the stereoscopic water culture boxes, casings for planting are inserted into the planting holes, and a water pump is placed in the water culture box at the bottommost layer and is used for pumping nutrient solution into the topmost water culture box through an arranged delivery pipe at fixed time. Since the device is simple, runs reliably, is simple to maintain and is convenient to assemble, the device is suitable for forming large-scale planting factories through combination for standard, intensive and high-efficiency planting production; the manufacturing costs of facilities can be greatly reduced, the technical thresholds of use and maintenance are reduced and the yield is greatly improved.

The invention discloses a debris-flow drainage canal with energy dissipation and drainage functions and an application of the debris-flow drainage canal with energy dissipation and drainage functions. The drainage canal comprises a fully-lining drainage canal bottom plate and drainage canal side walls on two sides of the drainage canal bottom plate; the drainage canal bottom plate is in the shape of continuously-connected multiple-stage steps, the steps are provided with grooves; the width of the grooves on the top surfaces of the steps increases gradually along the flow direction of the debris flow, and the width of the grooves on the vertical surfaces of the steps decreases gradually; and the maximum width of the grooves on the top surfaces of the steps coincide with the maximum width B on the vertical surfaces of the steps. Compared wit the prior art, the step shape design is adopted to dissipate the energy of the debris flow all the way and the groove design is adopted to drain the debris flow, so the debris-flow drainage canal disclosed by the invention has high efficiency and good drainage capacity. By adjusting the height and the length of the steps and the size and the shape of grooves, the debris-flow drainagedrainage canal can be used for preventing the debris flow with any gradient and any nature.

The invention discloses a combined hydraulic rectification device of a pump station water inlet pool at an ultralow water level. The combined hydraulic rectification device comprises a diversion canal, a front pool, a water inlet pool, a water inlet pipe, a water inlet flared pipe, a flow guide table, an underwater vortex elimination cover plate and a W-shaped flow guide pier, wherein the water inlet pipe downwards extends into the rear end of the water inlet pool; the water inlet pipe is connected with the water inlet flared pipe; the flow guide table is arranged on a bottom plate of the water inlet pool and is coincident with the axial line of the water inlet flared pipe; the circumference surface of the flow guide table is a smooth curve surface; the cross section of the flow guide table is a round plane, and the area is gradually decreased from bottom to top; the underwater vortex elimination cover plate is arranged at the rear end of the water inlet pool, and is positioned in a connection position of the water inlet pipe and the water inlet flared pipe; the W-shaped flow guide pier is arranged on the bottom plate of the water inlet pool and is tightly attached to the rear wall of the water inlet pool; the W-shaped flow guide pier is formed by two flow guide edge piers and one flow guide middle pier; the W-shaped flow guide pier is higher than the underwater vortex elimination cover plate. The combined hydraulic rectification device has the advantages that the water flow of the water inlet pool is enabled to be uniform and stable, so that a water pump machine unit stably, safely and reliably operates at the ultra-low water level of the water inlet pool.

The invention discloses a sediment desilting method of turbulent debris flow and flood with hyperconcentration and application thereof. The sediment desilting method includes arranging a plurality of wire box bed reinforcing dams in a main gully bed to stabilize the main gully bed mass for fixing the main gully bed in sections; the upstream of the main gully bed is provided with a gravity drainage check dam used for drainage; the side part of the main gully bed at the downstream of the gravity drainage check dam is provided with a wire box sand depositing pool; the gravity drainage check dam and the wire box sand depositing pool are connected through a drain; the wire box sand depositing pool and the main gully bed are connected through a flood discharge pipe to drain the clean water through the sand deposition treatment of the wire box sand depositing pool to the main gully bed. Compared with the prior art, the invention can effectively desilt the thin particle matters of the turbulent debris flow and the sediment of the flood with hyperconcentration and avoids the sediment from silting the reservoirs in the downstream, the lakes in beauty spots as well as silting the farmlands and cities. The sediment deposited in the wire box sand depositing pool can be utilized for the area lack of construction sand.

The invention relates to a large-gradient gravel river bank protective structure and a river washout-resistant controlling method thereof. The river washout-resistant controlling method comprises the following steps of: determining a river width based on a planned line shape according to the river characteristics; determining a bank protective form according to a flood control standard; determining apron burial depth and laying width according to flow quantity and riverbed composition; designing the dimension of the bank protective structure according to the property and the height of filling soil; then excavating the riverbed along a vertical direction and a horizontal direction together; then respectively constructing vertical bank protective structures at both sides of the riverbed; also arranging presetting holes on the vertical bank protective structures; constructing aprons along the horizontal direction on both ends of the bottom of the riverbed, wherein one ends of the aprons are inserted into and fixedly connected with the presetting holes of the vertical bank protective structures positioned at corresponding sides; finally backfilling to the height of an original riverway on the aprons, and backfilling to preset height at both sides of the bank protective structure. The invention achieves the effects of basic balance of riverbed siltation erosion and fast flood discharge, plays a submission role on water flows, not only reduces the impact force of the water flows on a river levee, but also enables silt to be taken away by the water flows, thereby preventing river sand from blocking the riverway due to sedimentation.

A water-free cleaning device for a photovoltaic module is composed of a cleaning cover (27) and a foldable stopping frame (35). The cleaning cover (27) cleans the photovoltaic module, and the foldable stopping frame (35) provides a stopping position for the cleaning cover (27). When the water-free cleaning device does not work, the cleaning cover (27) is located above the foldable stopping frame (35), and when the water-free cleaning device works, the cleaning cover (27) is separated from the foldable stopping frame (35) and moves to the photovoltaic module (30) to clean the photovoltaic module (30). According to the water-free cleaning device, the basic functions of scraping, whisking and sucking for cleaning the photovoltaic module are integrated, power is provided for the automatic water-free cleaning device for the photovoltaic module through unavailable energy of the photovoltaic module, and automatic running and cleaning of the cleaning cover on the surface of the photovoltaic module is achieved in the mode that the upper edge frame of the photovoltaic module serves as a rail.

The invention discloses a water sealing device. For solving the problem that because an opening of a water tank of an existing water sealing device faces upwards and is exposed, scattering sintered materials fall into the water tank easily and block in the water tank, the technical scheme that the water sealing device is composed of static water tanks and an air channel, and the two static water tanks are arranged between static water tank outer ring plates and below an upper sealing cover is put forward. The water tanks are hidden below the upper sealing cover, the two static water tank outer ring plates block two sides respectively, bellows branch pipes are arranged below the water tanks, in this way, scattering materials entering the bellows branch pipes settle by themselves under the action of gravity, the possibility that the sintered materials fall into the water tanks is eradicated, and blockage of the water tanks is avoided.

The invention relates to a highway green belt and a construction method thereof and belongs to the technical field of civil engineering. The highway green belt comprises a slope green belt and an isolating green belt, wherein the slope green belt comprises a base body, a reservoir, a drainage ditch and a planting pit, the isolating green belt comprises a fence, a soil layer, a water storage layer and a base layer, and the reservoir is connected with the water storage layer through connecting pipelines. The construction method comprises steps as follows: base body construction of the slope green belt, construction of the isolating green belt and cultivation of green plants. According to the highway green belt and the construction method, the cost is low, the maintenance frequency and maintenance cost are reduced, construction is simple, death of trees is reduced to the maximum, and management and maintenance of the green belt are facilitated.

The invention discloses a mine water-inrush treatment multiplex system and a treating method thereof. The adopted technical scheme is that the mine water-inrush multiplex system comprises a pre-precipitation unit, a gob and an aeration oxidizing filtering unit, and mine inrush water is guided to flow through the pre-precipitation unit, the gob and the aeration oxidizing filtering unit sequentially. The system and the treating method have the advantages that the mine inrush water first passes through the pre-precipitation unit to remove a large amount of suspended matter with coal powder and rock waste as the main thing before entering the gob, thereby avoiding the fact that the font end of the gob has siltation and is blocked by the suspended matter and effectively prolonging serve life of the gob. Water from the gob enters the aeration oxidizing filtering unit, substances such as iron and manganese in the mine inrush water can be effectively removed, and outlet water quality can be ensured. The whole mine water-inrush treatment multiplex system is short in flow, less in power equipment and apt to achieve automation. The method is simple and convenient to achieve, low in cost, high in efficiency and good in water quality purification effect.