Provided is a tower of a wind turbine, having a hollow inner space and a door for opening and closing an aperture into the inner space, wherein the door is a sliding door, which is slidingly arranged on a tower aperture member attached to the tower, and which sliding door is at least partially sealed by a seal to the tower aperture member at least when the door is in the closed position.

A public service cabinet includes a foundation support, a connection frame, and housing parts that delimit internal spaces for receiving electrical and/or communication/control equipment. The foundation support includes a first street mast module of which an upper end is configured to be connectable to a lower end of a second street mast module of a modular street mast. The connection frame is releasably connected to the first street mast module, and the housing parts extend to a height that lies above a height to which the first street mast module extends such that at least an upper portion of the first street mast module is surrounded by the housing parts. A removable first-type cover is provided that is configured to shield of an upper side of the cabinet including the upper end of the first street mast module.

The present disclosure describes a monopole door hinge assembly. The assembly may comprise a monopole comprising a door, the monopole and door both having an interior surface, and a plurality of hinges. Each hinge may comprise a base member configured to be secured to the interior surface of the monopole; and a rib member having a supporting portion and a mounting portion, the supporting portion having an arcuate profile that corresponds to an arcuate profile of the interior surface of the door and the mounting portion is pivotably attached to the base member. The base member of each hinge is mounted to the interior surface of the monopole and the supporting portion of each hinge is mounted to the interior surface of the door, thereby securing the door to the monopole.

A system and method are used for transporting a plurality of tower sections of a wind turbine on beds of transport devices, such as flat railcars. Supports affix at support locations on beds to accommodate at least one of the tower sections on each of the transport devices. The supports can include bed supports, such as tabs, extending from the beds, and can include cradle supports with slots that engage on the tabs. A circumferential dimension of a cradle is adjusted on each of the supports against which the tower section rests. Each of the tower sections is then supported with at least two of the supports by loading the tower sections on the transport devices. An end of each of the tower sections is then affixed to a flange on at least one of the supports on each of the transport devices.

A system and method are used for transporting a plurality of tower sections of a wind turbine on beds of transport devices, such as flat railcars. Supports affix at support locations on beds to accommodate at least one of the tower sections on each of the transport devices. The supports can include bed supports, such as tabs, extending from the beds, and can include cradle supports with slots that engage on the tabs. A circumferential dimension of a cradle is adjusted on each of the supports against which the tower section rests. Each of the tower sections is then supported with at least two of the supports by loading the tower sections on the transport devices. An end of each of the tower sections is then affixed to a flange on at least one of the supports on each of the transport devices.

A vertical escape structure comprises an escape housing disposed in a vertical orientation and mounted to a ground to maintain structural integrity in the vertical orientation against external flooding. The escape housing includes an interior which is sealed against water entry from exterior flooding and at least one of a staircase, a ladder, an elevator, or a lift disposed in the interior of the escape housing. The vertical escape structure further comprises a connecting walkway to connect the escape housing to a building. The escape housing has a smaller horizontal footprint than the building. The walkway is severable from the building by force without damaging the escape housing to cause water entry from the exterior flooding.

A vertical escape structure comprises an escape housing disposed in a vertical orientation and mounted to a ground to maintain structural integrity in the vertical orientation against external flooding. The escape housing includes an interior which is sealed against water entry from exterior flooding and at least one of a staircase, a ladder, an elevator, or a lift disposed in the interior of the escape housing. The vertical escape structure further comprises a connecting walkway to connect the escape housing to a building. The escape housing has a smaller horizontal footprint than the building. The walkway is severable from the building by force without damaging the escape housing to cause water entry from the exterior flooding.

An enclosure structure, and an aerodynamic configuration adjuster arranged on an outer surface of same are provided. The aerodynamic configuration adjuster is of a grid structure capable of surrounding the enclosure structure, and the grid structure comprises a plurality of grid cells, at least some of grid cells have bevel edges, and the attack angle of a fluid is changed when the fluid passes over the bevel edges. The aerodynamic configuration adjuster changes the aerodynamic configuration of the fluid, and thus the resistance coefficient becomes smaller such that a pressure differential between the pressures at a incident flow surface and a back surface of the enclosure structure is reduced, thereby reducing a forward resistance; and in addition, due to a smaller resistance coefficient, the amplitude of a transverse vortex-induced resonance can also be reduced, thereby reducing vibration.

A wind power generation apparatus, a tower and a method for suppressing a tower shadow effect of the tower. The tower is provided with suction through holes extending through a circumferential wall thereof, and the suction through holes are distributed in a circumferential direction of the tower; the tower is further provided with a suction apparatus, and the suction apparatus can perform suction to the suction through holes from outside to inside. With the tower and the method, when the suction through holes at a windward side are suctioned, the adverse influence of the tower shadow effect can be weakened or eliminated, a service life of a pitch varying bearing can be prolonged, a noise can be reduced and a wind energy utilization coefficient can be improved. When the suction through holes at a position of a bypassing flow detachment are suctioned, vortex-induced vibrations can also be suppressed.

A wind power generation apparatus, a tower and a method for suppressing a tower shadow effect of the tower. The tower is provided with suction through holes extending through a circumferential wall thereof, and the suction through holes are distributed in a circumferential direction of the tower; the tower is further provided with a suction apparatus, and the suction apparatus can perform suction to the suction through holes from outside to inside. With the tower and the method, when the suction through holes at a windward side are suctioned, the adverse influence of the tower shadow effect can be weakened or eliminated, a service life of a pitch varying bearing can be prolonged, a noise can be reduced and a wind energy utilization coefficient can be improved. When the suction through holes at a position of a bypassing flow detachment are suctioned, vortex-induced vibrations can also be suppressed.