261 results about "Floodgate" patented technology

The invention discloses an urban river surge flood control and drainage dynamic forecasting control method. The method comprises the following steps that firstly, real-time rainfall data in a drainage basin is collected; secondly, the real-time rainfall data is transmitted and received through GPRS communication; thirdly, an underlying surface type is determined according to a satellite image, and CN values of all areas are obtained through checking according to the underlying surface type and a CN experience value table; fourthly, the volume of a flood is calculated based on a drainage basin rainfall-runoff model; fifthly, a water surface profile and the drainage volume of a pump station are calculated and forecast based on a river surge one-dimensional water flow mathematic model for coupling water gate overflowing and drainage of the pump station; sixthly, the volume of river surge flood propagation and drainage hydrological parameters are forecast in real time. By means of the urban river surge flood control and drainage dynamic forecasting control method and system, the river surge flood control and drainage situation can be effectively, accurately and dynamically forecast in real time, and urban river surge management and design can be easier.

This invention is a switch use to open or close the theft proof floodgate. It features are: The support position of transmission, drive screw rod is in the holes on the bottom of the transmission box and in the hole of the box cover. The support position of drive axis is in the horizontal hole on the side of the box cover. In the box the bevel gear on the screw rod in gear to the bevel gear on the drive axis. On the drive axis there are two different axes, they have different diameter and inverse screw, the step axes are geared with handle female screw separately, the screw axis on the outer is the smaller one. In the hole on the box cover's side have female screw be geared with the box cover. The end of handle is connected with turning handle, and other end of handle is formed screw cylinder, on its surface there are screws, they are geared with the screw axis on drive axis.

This invention discloses ocean tide power generation equipment and method, which contains V-shape check dam, overtopped dam, water storage reservoir, drainage reservoir, water intake gate, drainage sluice and power generator set. When the ocean is on the tide, open intake gate, close sluice in ebb, use the water level difference to generate electricity. Said V-shape check dam can collect sea water as the tide is small. Said invention has low cost and stable operation.

The invention discloses a safe operation scheduling system for a water conveyance project in a hilly region. The system comprises a flow division pond, a pump station front pond, a pump station, a water conveyance pipeline, a pressure tunnel, a free-flow tunnel, a high pool and a division, wherein a diversion sluice and a regulating sluice are arranged in a water conveyance system on the upstream of the pump station front pond; a flow and pressure regulation valve is arranged at an inlet of the pressure tunnel; flow and pressure regulation valves are arranged on the upstreams of the diversion and the free-flow tunnel; a flow and pressure regulation valve is further arranged at the tail end of the water conveyance system; pressure meters, flow meters, water level gauges and timers are arranged at the pump station front pond, the water inlet and outlet ends of each water pump of the pump station, the diversion and temporary regulation points along a water conveyance line. The system further comprises a control unit, wherein the data acquisition end of the control unit is connected with the pressure meters, the flow meters, the water level gauges and the timers; the control end of the control unit is connected with a water pump control cabinet for controlling the water pumps, a flow and pressure regulation valve control cabinet for controlling the flow and pressure regulation valves and a control cabinet for controlling the regulating sluice, the diversion sluice and a diversion valve.

The invention provides a tide-sensitive river network water environment treatment method based on an MIKE model, and the method comprises the following steps: step 1, establishing a river network model based on MIKE, and improving the stability and precision of the model through a method of space step length control, terrain recheck and group gate assignment operation through a time sequence; step2, determining a water replenishing and activating scheme; and step 3, determining a water supplementing process and a water supplementing amount. Complex water flow characteristics of a tidal rivernetwork are used; an HD of an MIKE11 model is used; the AD module constructs a one-dimensional hydrodynamic force and water quality model; the model can directly determine the planned flow of the sluice and the pump station and the flow and concentration of a pollution source afflux point; outputting a water level process line of each section of the river and a process line of pollutant concentration; decision bases are provided for implementation and arrangement of water replenishing and flowing water and river regulation projects in a river network area, tidal power and existing sluice dispatching and water replenishing are fully utilized, the project operation cost is low, implementation is facilitated, river surges are connected into a whole, the river surge water environment is improved, and meanwhile flood regulation is facilitated.

The invention discloses a multifunctional self-circulation filtration teaching experiment device, which is characterized by the following: setting upstream and downstream water level overflow plates on two sides of gate base; setting water gate floor on the top of gate base with gate on the top of water gate floor; connecting left and right ends of gate base with upstream backwater pipe and downstream backwater pipe; setting the colorful liquid inlet pipe among the control upstream water level overflow plate, control downstream water level overflow plate and gate base; setting water-in pipe on the left down end upstream of gate base, which connects pump with reservoir; setting the pump controller on the pump. When experimenting, the colorful liquid inlet pipe inserts on the top of gate base. The device demonstrates the earth dam and gate filtration as well as observing drafted phreatic line and flow net picture, which generates the filtration pressure and distribution under the gate base and average filtration slope-drop of each downstream outlet net flow.

The invention discloses a method of measuring floodgate opening. The method comprises the steps of arranging a position switch along the position where a hoist drive gear is lifted or lowered, the position switch together with a counter of a measuring device composes a counting circuit to acquire the tooth number of the gears; the position acquires a position limit signal when the floodgate is fully opened or closed; when the floodgate is lifted or lowered, the measuring device transforms the rotation tooth number of the host drive gear to floodgate opening through opening calculation according to a tooth number signal, the position limit signal and a lifting or lowering signal. When the measuring device obtains the signals that the floodgate is fully opened or closed, the counter resets. The method of measuring floodgate opening is easy to measure, high in precision, less in error and is convenient and easy to operate, which is particularly suitable to measure the opening of dam floodgate.

A floodgate is provided. The floodgate has a panel configured to be movable between an opened position and a closed position wherein in the opened position, the panel forms a barrier against flood water. First and second extendable members coupled to the panel exert a force to move the panel from the closed position towards the opened position about at least one hinge. A deactivation mechanism is operable to deactivate the first extendable member when the panel is moved from the closed position towards the opened position, thereby reducing force exerted by the first extendable member against the panel when the panel is moved from the opened position towards the closed position.

The invention discloses a structural system for excluding sand in diversion canal of hydraulic station, comprising waste water storage dam of draining line, diversion bank, guide bank, right bank, conduit, diversion gate, sand flushing channel, sand flushing gate, waste sand storage weir of draining line, sand slot, cover of sand flushing and cover of sand guiding. Riverway is divided into draining line, sand flushing channel and conduit by diversion and guide banks. There is L-shape sand slot on the one side of the upper of sand guiding and flushing channels, of which one end is started from right bank and parallel to the direction of diversion gate, and the bottom is inclined to deepen from starting end of right bank to left end. Cover of sand guiding is fixed on the sand slot parallel with diversion gate in certain distance. The left end of sand slot ends to the position of diversion bank and gate of sand flushing and is shaped L, of which the bottom is inclined to deepen to gate of sand flushing. Cover of sand flushing is set on the sand slot to gate of sand flushing. The system can exclude sand thoroughly and automatically.

The invention relates to a coarse aggregate voidage testing device. The coarse aggregate voidage testing device comprises an aggregate container and a water storage device, the aggregate container is of drum structure, the sidewall of the aggregate container is provided with a hole, the water storage device is arranged on the lower portion of the outer wall of the aggregate container and below the hole. The outer side of the hole is provided with a water gate, a sealing strip is arranged between the water gate and the hole, and a protective cover is arranged on top of the aggregate container. The method using the device includes S1 calibrating the aggregate container; S2, measuring voidage, and S3 calculating voidage. The coarse aggregate voidage testing device has the advnatages that water flowing is not easy to react with or dissolve coarse aggregate, and functions as filler filling gaps among coarse aggregate during test. When the coarse aggregate is filled up, the volume of the water is the size of the gaps among the coarse aggregate, and the voidage of the coarse aggregate can be calculated by measuring water volume. The principle is simple, operation is convenient, and accuracy of voidage is high.

The invention discloses a device suitable for an instant dam break test and an operation method of the device and relates to the field of hydraulics model testing. The device includes a test water groove, a water gate, a transmission system and a triggering system. Before a dam break test starts, a gate simulating a dam body in a door groove is in a static state. When the dam break test starts, aheavy bob falls so as to pull a thin cord, so that a pin is unplugged. A cam is pulled away instantly by a spring. The gate loses support of a support rod and acquires pulling force of a transmissionsystem at the same time, and falls rapidly in an extremely short time. By adopting the device provided by the invention, formation of under-gate hydraulic jump and disturbance of upstream water body due to upward lifting of a gate in a traditional dam break test are avoided, and more accurate study of water flow motion characteristics in a dam body instant break condition is facilitated.

The invention relates to a blowfish culture system, which comprises a first culture pond, a second culture pond, arc partition boards, guide sieves and a water gate. The water gate is disposed at the intersection of the first culture pond with the second culture pond. The bottom of each of the two culture ponds is in an approximately conical structure convenient for discharging and clearing fish residue. An aerating device is disposed at the bottom of each culture pond. The arc partition boards in a pair with the upper ends above the water are disposed in the middle of each culture pond, are opposite to each other, and are overlapped at the ends provided with gaps, where openings of the gaps are in the same direction as water flow. The upper end of each arc partition board is provided with a round hole by which the partition board can be conveniently moved or conveniently moved out of the water with a stick and/or pole. Each guide sieve is disposed between the corresponding arc partition board and the exterior wall of the corresponding culture pond. The blowfish culture system can be used for graded culture, the risk of mutual predation can be lowered, the survival rate is improved, and the economic benefit is improved.

The invention discloses a double-layered pump gate arrangement structure, which comprises a concrete structure. A pump station body and a water gate chamber are integrated to form the concrete structure, the pump station body, a pump station forebay and a water outlet pond are arranged in the concrete structure, a station body self flowing channel is arranged in the pump station body, a water pump is mounted in the pump station body, and the station body self flowing channel passes through the water pump; a pump station water inlet flow channel gate is disposed at an inlet of the station body self flowing channel, and a pump starting work gate and a pump stopping work gate are disposed at an outlet of the station body self flowing channel; and a gate culvert which forms a gate chamber is arranged below the station body self flowing channel, a water gate forebay which is also used as the pump station forebay is disposed outside an inlet of the gate culvert, a stilling pond which is also used as the water outlet pond is disposed outside an outlet of the gate culvert, and a culvert gate is disposed in front of the outlet of the gate culvert. The double-layered pump gate arrangement structure is particularly applicable to conditions that widths of pumps, gate hub fields and water inlet and outlet guiding channels are limited, for example, water intake of combination of power lift and self flowing of center urban regions and middles of rivers is realized by the double-layered pump gate arrangement structure.

The invention discloses a multi-stage self-collapsing closed headwork and belongs to the technical field of hydro project headworks. The multi-stage self-collapsing closed headwork can resist flood exceeding the designed level, is simple in structure, convenient to implement and low in construction cost and does not occupy space permanently. The problem that headworks are damaged by flood exceeding the designed level is solved through the disaster prevention and mitigation design theory of the multi-stage self-collapsing closed headwork. The structure of the multi-stage self-collapsing closed headwork comprises a flood discharge bottomland (2-2), an earthy embankment (3), a geotechnical synthetic material armour earthy flood diversion dyke (4), a geotechnical synthetic material protecting multi-stage self-collapsing earth embankment (5), an intake gate (6), a barrage gate (7), a rockfill dam (8), an earthy barrage (9), flood diversion farmlands (10), a gulch (11), rope system non-woven fabric grid bands (12) and a rope system non-woven fabric bottomland locking penetrating band (13). The structure is suitable for closed headworks with the bottomland, headworks with rockfill dams, open headwork bottomland treatment and headworks with flood exceeding the designed level outside the embankment farmland for flood diversion.

An automatically opening-closing streamlined water gate install in river for storage of water is characterized by that the liquid can be filled in it for regulating its dead weight, it can be automatically closed or opened by water pressure according to standard water level, and a lifting mechanism is installed for forced drainage.

The invention discloses a method for building and repairing a dam of a flooded paddy field, and relates to the field of agricultural production and water conservancy construction. By using the method, a water storage function of the flooded paddy field is fulfilled, the natural wetland of the Dazhou can be recovered, the water level of the flood peak of a river is reduced, flood damage of the river of the Dazhou is reduced, and functions of flood storage and drought control are fulfilled. The dam of the flooded paddy field consists of Z-shaped plates (1), field dam flood storage plates (2), a planting stepped water gate (3), a flood storage inclined plate trumpet-shaped water gate (4) and connecting plates (5). Before raining, the water gates are opened, and clear water in the flooded paddy field is drained; during raining, the water gates are closed, flood is stored, the water level of the flood peak of the river is reduced, and the quantity of muddy sand in the flood is reduced; and the rainwater can be stored by the flooded paddy field at all seasons, by using the rainwater, planting, cultivation and drought control can be carried out, and functions of the natural wetland of the flooded paddy field of the Dazhou can be recovered.

The invention discloses a water intake constructing method and structure considering both agricultural irrigation and living water supply. The method includes: a deep water intake gate hole 10 is formed in the bottom of a water intake, and a deep water gate 13 is disposed at the deep water intake gate hole 10; a stop log gate is disposed on the upper portion of the water intake 1, and a service gate hole 3. The water intake constructing method and structure considering both agricultural irrigation and living water supply has the advantages that when reservoir downstream has comprehensive requirements of agricultural irrigation and living water supply, appropriate water temperature layer reservoir water can be provided for agricultural irrigation, and deep reservoir water with good water quality can be provided for living water supply; perfect combination of reservoir ecology protection and engineering economic benefits is achieved, and the defects of tradition water intakes are overcome.

The invention discloses a method for drawing a water system network graph in regional water conservancy planning. The method for drawing a water system network graph comprises the steps of: performing early survey and data analysis, and generalizing current network graphs; inputting parameters, performing analytical calculation, and outputting a planned network graph; and performing rationality analysis and optimization adjustment, thus obtaining the water system network graph. The water system network graph is composed of nodes, connecting lines and graphic examples, wherein the nodes express sites of afflux, outflow, shunt and inflow of water flow; the connecting lines are venations; line segments and arrows express the trends of river and channel water delivery facilities; the graphic examples express reservoirs, lakes, pump stations and sluice project facilities; and the whole graph is like a network. The water system network graph provides intuitive and vivid illustration for water conservancy planning, and is strong in simulation performance and definite in logic relation.