摘要:
Disclosed is a floodgate opening and closing system using a measurement of a motor revolution count, in that an opening and closing state of a floodgate formed at irrigation facilities for sewage, rainwater, agricultural water, freshwater and so on can be numerically transformed and the transformed data can be transmitted to a data collection apparatus such as a remote control system or transmission system and so forth through a communication network and so on, so that the opening and closing rate of the floodgate can be exactly perceived and controlled in a real-time on the remote place, whereby increasing the efficiency of water management.
摘要:
A fluid level control system, particularly useful for controlling the level of water flowing in an open channel. The fluid level control system includes a gate having a flap portion interconnected to a lever portion. The flap portion is rotatable about a first pivot point. The system further includes a frame which is fixed with respect to the flap portion. A linkage interconnects the flap portion and the lever portion, and is connected to the frame at a second pivot point different than the first pivot point. Under changing flow conditions in the channel, the present system operates by both: (i) absolute movement of the lever portion and the flap portion, and (ii) relative movement between the lever portion and the flap portion. A fluid treatment system and a method for controlling the level of a flowing fluid may also use such a fluid level control system.
摘要:
Method and apparatus for the automated control of canals. The present invention achieves and maintains steady state operation in each pool of a canal despite changing demands. Each pool in the canal is controlled separately by its own pool controller. The present invention teaches that control of a canal depends both on controlling the level of fluid in the canal at key locations. To attain this end, the present invention provides two separate control functions within each pool. First, a pool controller constructed according to the principles of the present invention attains and maintains pool level control indirectly by means of pool volume control, i.e. by controlling the pool volume where the flow is known. Second, and subservient to maintaining the pool level, the pool controller maintains sufficient flow through each pool by means of flow control at the pool's inlet, such that both the pool's demands and necessary volume, as well as the demands and necessary volumes of all pools downstream are correctly accounted for. Finally, the present invention manages the overall control objectives for the canal by electronically linking the pool controllers and by appropriately modifying the pool controller logic. In this manner upstream control, downstream control, or hybrid forms of canal control can be implemented by means of the present invention.
摘要:
A self-actuating water control gate comprised of a stepped radial gate face 14 mounted on hinge arms 19 extending downstream to a pivot shaft 12 and to a counterweight 11 and support system. The gate face 10 includes a hydraulic thrust surface 15, and radially shaped end plates 17. The gate face has an upper section 14 and lower section 16 whose radii differ by predetermined amount. The support system for the counterweight 11 includes a pattern of holes 26 and eccentric cams 27 providing for adjustable sensitivity. The radial endplates 17 in combination with matching fixed jambs provide a small constant clearance in operation, confining the flow to the area below the gate. A fixed viscous damping vane 33 extends from the front of the gate into the approaching flow. The vane has an irregularly castellated vortex dispersing leading edge.
摘要:
A system for controlling and preventing flooding of areas adjacent a waterway includes a multiplicity of interconnected flood gates located in the banks of the waterway. The system includes water level sensors and devices for moving the floodgates in response to signals from the water level sensors.
摘要:
The gate float container which is in communication with the tailrace through an opening in the bottom of such container, is provided with a slidable plate formed to enable the size of the opening to be varied to control the operation of the gate, and to enable the gate to be balanced without immersing the container in the tailrace.