196 results about "Weather vane" patented technology

The invention discloses a control method of a wind power generator. According to the control method disclosed by the invention, a wind indicator and an angle sensor are matched with a PLC (Programmable Logic Controller) and a direction adjusting motor to realize automatic wind catch of the wind power generator; and a wind speed sensor, a rotating speed sensor and a temperature sensor are matched with the PLC and the direction adjusting motor to realize automatic over wind speed, over rotating speed and over temperature protection of the wind power generator. The control method disclosed by the invention can realize an initiative and automatic wind catch function of the wind power generator and an automatic protection function of the wind power generator at the condition with over wind speed, over rotating speed and over temperature, and thus the stability and safety of the wind power generator in work are greatly improved.

An upstanding bladed rotor is journalled from support structure and a windshield assembly is also journalled from the support structure for angular displacement about an upstanding axis about the rotor. The windshield assembly includes a wind-shielding portion which extends generally about one half the periphery of the rotor and further includes a wind vane operative to maintain the assembly in predetermined position relative to wind incident upon the rotor with the wind-shielding portion in position to shield generally one lateral half of the rotor from the incident wind. The windshield assembly additionally includes a combined wind booster and excess wind controlling vane supported therefrom and disposed outward of the other lateral half of the rotor into the sweep area thereof responsive to high velocity wind incident thereon so as to apply rotary torque to the windshield assembly partially overcoming the directional control thereon by the wind vane and swinging the wind-shielding portion into position across the side of the rotor upon which the wind is incident so as to reduce the amount of high velocity wind available to drive the rotor and thus prevent the latter from overspeeding.

The invention belongs to the technical field of measurement for attack angles and sideslip angles in an aircraft air data system and specifically relates to a small-size self-balancing type weather vane. The problems of a large influence on aircraft or product profiles and a smaller measurable angle scope of the present blade type weather vane are solved. The small-size self-balancing type weather vane comprises a rotating shaft, a weather vane rod and a weather vane made of aluminum alloy material, wherein the weather vane rod comprises a front half part made of stainless steel material and a rear half part made of aluminum alloy material; the front half part has an equal-diameter structure; the rear half part has a streamline contracting type structure; the diameter of the front end of the rear half part connected with the front half part is the same as the diameter of the front half part; the weather vane has a two-side symmetrical platy structure. The small-size self-balancing type weather vane can be used for effectively eliminating the influence on the aircraft or product surface and accurately outputting the attack angle and sideslip angle data; the measurement scope of an attack angle/sideslip angle sensor is greatly increased; the highest use mach number can reach 2.5 and the 340-degree measuring scope can be achieved.

The invention provides a microminiature type angle-of-attack sensor. The microminiature type angle-of-attack sensor comprises an installing seat, an integrated force-arm type weather vane, a bearing, a balancing weight and an angle-of-attack acquiring device, wherein the installing seat is provided with an internal containing space; the integrated force-arm type weather vane comprises a weather-vane shaft, a weather-vane force arm extending obliquely from one end of the weather-vane shaft, and a weather-vane wing surface supported by the weather-vane force arm; the weather-vane force arm and the weather-vane wing surface are exposed at the outer part of the installing seat and rotate along with airflow to drive the weather-vane shaft to rotate together; the bearing is arranged in the internal containing space and is used for supporting the weather-vane shaft penetrating through the bearing; the balancing weight is arranged at the other end of the weather-vane shaft and is positioned under the bearing in the internal containing space; and the angle-of-attack acquiring device is arranged at the bottom part of the internal containing space and is connected with the weather-vane shaft. The microminiature type angle-of-attack sensor provided by the invention has the advantages of compact structure, clean pneumatic appearance, small interference for a flow field, easiness in miniaturization, low friction force and high measuring accuracy.

The invention discloses a wind direction and wind speed testing apparatus comprising a pedestal on which a wind direction indication disc is disposed. A rotating shaft is disposed on the center of the wind direction indication disc. A pointer used for indicating wind direction is disposed on the bottom of the rotating shaft. The top of the rotating shaft is connected with a transparent cylinder. The front end in the transparent cylinder is connected with a plastic sheet through a spring. The transparent cylinder is hollow in the front and back direction and is equipped with scales. The rear end of the transparent cylinder is connected with a wind vane. The wind direction and wind speed testing apparatus is not driven by electricity. The spring is compressed by resistance given by the plastic sheet blown by wind so as to indicate current wind speed. Additionally, the wind vane is arranged in order to accurately measure wind speed. Current wind direction can be read by the direction indicated by the pointer disposed on the rotating shaft, achieving an effect of killing many birds with one stone. The wind direction and wind speed testing apparatus has advantages of simpleness, practicability, and convenience, low price, and wide application in various fields.

The invention provides a multi-energy complementary self-powered monitoring node based on a solar temperature difference power generation unit and wind energy TENG. The multi-energy complementary self-powered monitoring node comprises a solar temperature difference power generation unit at the top, a flapping type friction nanometer power generation-wind indicator linkage unit at the bottom, a temperature and humidity sensor unit fixed to the lower end of the flapping type friction nanometer power generation-wind indicator linkage unit, and a circuit management and signal processing unit, wherein the solar temperature difference power generation unit comprises a temperature difference power generation part and a heat storage chamber which is arranged at the upper part of the temperature difference power generation part and is used as a hot end for supplying a heat source, and the temperature difference power generation part comprises a temperature difference power generation sheet anda flat heat pipe which is fixed at the cold end of the temperature difference power generation sheet and is used for transferring heat; electric energy generated by the solar temperature difference power generation unit is transmitted to the circuit management and signal processing unit through a wire. Solar energy and wind energy in the environment can be collected for energy supply, extra energysupply is not needed, and monitoring of the temperature, the humidity, the wind speed, the wind direction and other data is achieved.

The invention relates to an energy self-sufficient modular spliced deep sea fishery breeding work ship which comprises a semi-submersible bow, flexible connecting devices and semi-submersible modular net cages, the semi-submersible bow and the semi-submersible modular net cages are connected through the flexible connecting device, and the adjacent semi-submersible modular net cages are connected through the flexible connecting device; the semi-submersible bow comprises a superstructure, a semi-submersible main body, a mooring device, a bow power device and a power generation device. The superstructure is installed in the upper portion of the semi-submersible body, the mooring device is installed in the head portion of the semi-submersible body, the bow power device is installed at the bottom of the semi-submersible body, and the power generation device provides power for the ship. The semi-submersible modular net cage comprises a semi-submersible platform and a net cage power device, and the net cage power device is installed at the bottom of the semi-submersible platform. The position can be continuously changed according to change of sea conditions and weather, effective water body exchange is guaranteed through the weather vane effect, towing is facilitated, and wave additional bending moment shearing force is weakened.

The invention belongs to the technical field of aircraft ground maintenance, and particularly relates to a calibrator of an angle of attack sensor of an aircraft and a horizontal calibration method. The angle of attack measurement of a middle-sized transport aircraft is performed by a weather vane mounted on the outer side of an aircraft fuselage combined with the angle of attack sensor on the inner side of the fuselage. Such an angle of attack sensor is not provided with a dedicated calibration tool. The calibrator of the angle of attack sensor of the aircraft is used for horizontal calibration of the angle of attack sensor, and includes an angle dial and a horizontal pointer. A support is disposed on the lower surface of the angle dial, and a bubble level bar is disposed on the upper surface of the angle dial. The bubble level bar is parallel to a 0-degree scale line. The horizontal pointer is provided with a bubble level bar in parallel, and a groove hole combined with the weather vane of the angle of attack sensor is formed in the tail end of the horizontal pointer. A plurality of threaded holes communicating with the groove hole are further formed in the tail end of the horizontal pointer, and the weather vane is clamped by adjusting screws. According to the calibrator of the angle of attack sensor of the aircraft and the horizontal calibration method, the maintenance steps are simple, operation is easy, and the horizontal calibration of the angle of attack sensor is convenient.

The invention provides a multi-gradient self-rotation type sand collecting instrument. The multi-gradient self-rotation type sand collecting instrument is characterized in that the multi-gradient self-rotation type sand collecting instrument is of a detachable combined type structure, a rotary shaft which is arranged in a hollow upright column is inserted into a shaft sleeve on a base, a wind vaneis connected with the top of the hollow upright column by a built-in sleeve, a rotary upright rod is inserted into a hollow pipe of the wind vane via a circular hole in the top of the hollow pipe, the bottom of the rotary upright rod sleeves the rotary shaft arranged in the upright column, oblique stays are mounted on the top of the rotary upright rod, a plurality of buckles are equidistantly welded on two sides of the upright column in a staggered manner, sand collecting boxes are fixed to the two sides of the upright column by the aid of the buckles, and a sand collecting bag is fixed to anend of a leeward opening of each sand collecting box. The multi-gradient self-rotation type sand collecting instrument has the advantages that the multi-gradient self-rotation type sand collecting instrument which is an observation device is simple in structure and convenient to disassemble, and the near-ground wind-sand flow and sand-transport quantities can be accurately and quickly observed bythe aid of the multi-gradient self-rotation type sand collecting instrument.

The invention discloses ventilation energy-saving equipment for a green building. The ventilation energy-saving equipment for the green building comprises a base and a ventilation device, the top of a shell corresponding to a second cavity of the base is provided with a communicating protruding circular truncated cone, the outer side of a top port of the protruding circular truncated cone is annularly provided with clamping grooves for clamping and installing small steel balls, and a ventilation pipe is clamped and sleeved into the protruding circular truncated cone through a limiting chuck; an air adjusting plate is arranged on the outer wall of one end, away from an air inlet barrel, of the ventilation pipe through cooperation of a protruding block and a transverse rod, the air adjusting plate is perpendicular to a top plate of the shell, the air adjusting plate is blown by strong wind to drive the ventilation pipe to rotate at the top end of the protruding circular truncated cone through the transverse rod in windy weather according to the lever principle, and the air inlet barrel is aligned to the air coming direction; the consistency of the air inlet barrel and the wind coming direction is always ensured like a wind indicator for predicting the wind direction, natural wind is fully utilized, manual adjustment is not needed, and convenience and practicability are achieved.

The invention relates to a directly driven interconnected windmill generator set, which comprises the long-distance monitoring computer, the tower barrel, the vane, the yaw system, the weather vane, the cabin electric control system, the tower bottom electric control system. The characteristics are: without the gear box the radial length of the set can be greatly reduced to solve the erosion, the noise and the wearing problems brought by the revolving of the gear box and to maintain the life span of the set and to protect the environment.

The invention discloses a municipal street lamp capable of preventing violent typhoon. The street lamp structurally comprises a mounting base, a vertical rod, a mounting frame, a solar panel, a lamp body, a supporting rod and a stabilizing device. The bottom of the vertical rod is welded with the mounting base; the top of the vertical rod is connected with a solar panel through a mounting frame; the supporting rod is arranged below the mounting frame and is welded with the vertical rod; the lamp body is connected with the supporting rod; the stabilizing device is mounted on the vertical rod; the stabilizing device comprises a fixing bearing, a horizontal rod, a wind indicator and a reinforcing rod; and the fixing bearing is mounted on the vertical rod. The beneficial effects of the invention are that: the wind indicator can drive the reinforcing rod to move to a leeward position to support the vertical rod; the wind indicator can be changed at any time according to the wind direction,the wind wheel can enable the reinforcing rod to abut against the ground more forcibly and be used towards the windward position to resist typhoon under the condition that the reinforcing rod is keptin the state that the stored force is to be extended, the street lamp can be kept vertical under the strong typhoon, and pedestrians are prevented from being hurt by toppling over.

A system for capturing the energy of fluid currents, using axial turbines with one free end and the other end fastened to a mechanical element or electric generator, characterized in that the turbines comprise coil springs, helically twisted plates or crossbeams, complete helical turbines with their shafts or just their blades, which capture the energy of wind or water, with their shaft or fastened end actuating an electric generator or mechanical system. In all cases the blades around the rotation axis of the turbines have an inclination such that they generate a torque in the same direction and the turbines are automatically oriented by the water or air currents, like weather vanes.

The invention relates to the technical field of signal tower wind-resistant equipment, in particular to a signal tower wind-resistant reinforcing assembly. The signal tower wind-resistant reinforcingassembly comprises a base, the base is installed underground in a concrete pre-buried mode, a rotating inner cavity is formed in the middle of the upper end of the base, and a gear ring disc is rotationally installed at the lower end of an inner cavity of the rotating inner cavity. The signal tower wind-resistant reinforcing assembly has the beneficial effects that a reinforcing sleeve is arrangedon the outer wall of the lower end of a signal tower, so that the strength of the base of the signal tower is greatly improved, and breakage is avoided; meanwhile, the outer wall of the base of the signal tower is pre-warned by matching with a rotating tightening pull rope of a rotating motor, so that the pushing of part of wind power is counteracted, and the installation strength of the signal tower is greatly improved; and the rotatable base and a reinforcing wind-resistant plate which can be lifted up and down are arranged, so that the control over the motion state is realized according tothe rotating strength of a wind indicator, then the reinforcing wind-resistant plate is matched with the wind direction, the blocking of the wind power is realized, the influence of the wind power onsignal transmission is avoided, and the quality of signal transmission is greatly improved.

The invention discloses a horizontal shaft floating type tidal current energy power generation device formed by single point mooring. According to the key points of the technical scheme, the horizontal shaft floating type tidal current energy power generation device formed by single point mooring comprises a floating carrier and impeller devices connected to the lower end face of the floating carrier. The floating carrier is connected with a single point mooring device. The floating carrier is provided with an orientation rudder for guiding the floating carrier. According to the horizontal shaft floating type tidal current energy power generation device formed by single point mooring, the weather vane effect can be utilized to reduce resistance, tidal currents are aligned with automatically, the water plane area is reduced, and thus the wave loading is reduced.

A device to stabilize, reduce, or control the wave or wind-induced heave (vertical), surge (lateral), or pitching (rolling) motion of a floating or semi-submerged buoyant base, raft, barge, buoy or other buoyant body such as the buoyant base of a wave energy converter or a floating wind turbine base. The device concurrently allows the floating base to self-orient or weathervane to substantially maintains its orientation with respect to the direction of oncoming waves, winds, or wind gusts. The device also facilitates maintaining the submerged depth or vertical orientation of the buoyant base relative to the still water line to compensate for tidal depth changes. The device utilizes a second substantially submerged buoyant body having a center of buoyancy and at least one tensioned seabed connection located substantially below and forward or up-sea or up-wind of the center of buoyancy of the buoyant base. A structural member, which can optionally also be buoyant or integral with the base or second submerged body, connects the submerged buoyant body with the floating base.

A method and system for evaluating both fluid type and fluid flow downhole by applying thermal energy in a flow of the fluid, and monitoring downstream temperature over time to generate a temperature profile. The type of fluid being evaluated can be determined by comparing the measured temperature profile to profiles over time of known fluids because these profiles depend upon these fluids' thermal diffusivities and flow rates. Further, stratified flow in a deviated wellbore can be analyzed by conducting the fluid evaluation at different radial locations in the flow stream so that the presence of water, liquid hydrocarbons, and gas can he identified. The system can include a pivoting arm that selectively spans the wellbore diameter, and which includes multiple thermal sources, each with corresponding thermal sensor, that are spaced along the arm. A frame can be provided for each of the sources and sensors, which is automatically self-oriented along the direction of fluid flow like a weather vane.

The invention discloses a digital information transmission tower capable of preventing strong wind and collapse. The digital information transmission tower comprises a signal tower and a base, the base is fixedly embedded in a stratum, a rotating cavity with an upward opening is formed in the base, the signal tower is rotatably arranged on the bottom wall of the rotating cavity, the upward extending part of the signal tower penetrates through the stratum and extends out of the outside, the signal tower and the stratum are in rotating fit connection, a wind vane capable of being used for detecting the wind direction is arranged on the top face of the signal tower, a line wheel cavity is formed in the signal tower, and a transmission cavity is formed in the right side of the line wheel cavity in a communication mode. According to the digital information transmission tower, the problems that the digital information transmission tower collapses in the strong wind weather due to excessivelylarge wind force, and the signal tower is inclined and collapses due to ground subsidence can be effectively prevented, and the probability that surrounding pedestrians are crushed or houses and vehicles are damaged due to collapse of the signal tower can be greatly decreased.