The present invention provides an acoustic flow meter assembly (2) for pipes or open channels, said assembly including a frame (24) with a predetermined geometry. The frame has at least one user accessible port (36-42) with the at least one user accessible port (36-42) adapted to receive an interchangeable cartridge (44) which contains at least one acoustic transducer (46) to measure fluid velocity through said frame (24).

According to one embodiment, a flood vent includes a frame forming a fluid passageway through an opening in a structure. The flood vent further includes a door pivotally mounted to the frame in the fluid passageway for allowing a fluid to flow through the fluid passageway. The door has two opposing faces that include a first face and a second face. The flood vent further includes a first float positioned within the door in a location in-between the first face and a second float. Additionally, the first float is configured to allow the door to pivot in a first direction. The flood vent further includes the second float positioned within the door in a location in-between the second face and the first float. Furthermore, the second float is configured to allow the door to pivot in a second direction.

According to one embodiment, a flood vent includes a frame forming a fluid passageway through an opening in a structure. The flood vent further includes a door pivotally mounted to the frame in the fluid passageway for allowing a fluid to flow through the fluid passageway. The door has two opposing faces that include a first face and a second face. The flood vent further includes a first float positioned within the door in a location in-between the first face and a second float. Additionally, the first float is configured to allow the door to pivot in a first direction. The flood vent further includes the second float positioned within the door in a location in-between the second face and the first float. Furthermore, the second float is configured to allow the door to pivot in a second direction.

The present invention provides an acoustic flow meter assembly (2) for pipes or open channels, said assembly including a frame (24) with a predetermined geometry. The frame has at least one user accessible port (36-42) with the at least one user accessible port (36-42) adapted to receive an interchangeable cartridge (44) which contains at least one acoustic transducer (46) to measure fluid velocity through said frame (24).

The present invention provides an acoustic flow meter assembly (2) for pipes or open channels, said assembly including a frame (24) with a predetermined geometry. The frame has at least one user accessible port (36-42) with the at least one user accessible port (36-42) adapted to receive an interchangeable cartridge (44) which contains at least one acoustic transducer (46) to measure fluid velocity through said frame (24).

An open breakwater dike system comprising a dike body, anchor feet, wherein the anchor feet are connected to or integral with a bottom surface of the dike body; and a first pillar connected to or integral with an upper surface of the dike body is disclosed. In an embodiment, the open dike system further comprises a second pillar connected to or integral with the upper surface of the dike body offset from the first pillar; a first flap gate rotationally attached to the first pillar and disposed between the first and second pillars, wherein the first flap gate closes against a first extension in the second pillar; and a means for opening and closing one or more flap gates, wherein the means for opening one or more flap gates opens and closes the first flap gate. A method of using the open breakwater dike system is also disclosed.

An open breakwater dike system comprising a dike body, anchor feet, wherein the anchor feet are connected to or integral with a bottom surface of the dike body; and a first pillar connected to or integral with an upper surface of the dike body is disclosed. In an embodiment, the open dike system further comprises a second pillar connected to or integral with the upper surface of the dike body offset from the first pillar; a first flap gate rotationally attached to the first pillar and disposed between the first and second pillars, wherein the first flap gate closes against a first extension in the second pillar; and a means for opening and closing one or more flap gates, wherein the means for opening one or more flap gates opens and closes the first flap gate. A method of using the open breakwater dike system is also disclosed.

To provide a floating flap gate that requires an auxiliary force of a counterweight or the like, and in which bending does not occur in a forward end portion of a door body, even in cases in which an installation site has a wide span. A floating flap gate 1 having a forward end portion 2c of a door body 2 that is configured to rotate around a base end portion serving as a fulcrum at a time of a rising water, so as to float upwards, and provided with an upper beam 2d attached to the forward end portion 2c of the door body 2 and a door body suspension member 3 contained within the upper beam 2d, and having two ends each being connected to one end of a wire rope 4. A counterweight 5 is connected to the other end side of the wire rope 4 as a pulling device. Bolts 6b are used as adjusting members interposed between the upper beam 2d and the door suspension member 3, and are inserted into bolt holes 6a provided on an upper surface of the upper beam 2d, so as to exert an opposing force to the tension of the wire rope 4 resulting from the weight of the counterweight 5 acting on the door body suspension member 3, the opposing force being applied uniformly to the upper beam 2d during ordinary use.

A scupper door system includes a frame defining a passageway. A door is mounted within the frame at a pivot and is therein rotatable about the pivot within the passageway between a closed position, blocking the passageway, and an open position wherein the passageway is open to permit passage of water therethrough. A latch mechanism is configured to retain the door in the closed position and is triggerable in response to a preset water condition at one side of the passage to release the door from the closed position and allow the door to rotate to the open position.

A steel dam gate driven by a hydraulic motor, comprising a bottom transverse axis and gate leaves fixedly arranged along the length direction of the bottom transverse axis, both ends of the bottom transverse axis are provided with operating chambers, and both ends of the bottom transverse axis extend into the corresponding operating chambers, and are fixedly arranged with the output shaft of the hydraulic motor, the bottom transverse axis is rotatably connected to the two operating chambers. When the steel dam gate is in the open state, the gate leaves are in a horizontal state, at this time, the gate slab moves upward and is in an open state, water from upstream passes through the gap between the gate leaves normally, and also passes through the gap between the bottom transverse axis and the sill.