SU71232A1 - Device for transmitting the anemorumbograph for the angle of rotation of the wind vane - Google Patents

Description

Existing devices for measuring wind speed and direction, the so-called anemorumbographs, contain two separate devices - a speed meter, usually made in the form of a Robinson rotator with a series of blades driven by the force of the wind, and a wind direction indicator in the form of a wind vane. blown and set in the direction of the latter. These devices are often equipped with electrical devices for transmitting readings to a distance. The simplest types of these devices consist of electrical contacts that are closed, for example, by a vane, depending on the angle of its rotation.

The subject of the invention is a device for transmitting the angle of rotation of the wind vane of an anemorumbograph, made in the form of an electric sensor on the resistances, switched by contacts connected to the axis of the wind vane.

A distinctive feature of the proposed invention is

in the form of a contact device in which the individual contacts are made in the form of a series of mercury-filled cylindrical recesses in an insulating material, equipped with balls floating in mercury. These balls protrude above the edges of the depressions in order to press the balls connected to the axis of the wind vane to close the electric circuit by squeezing a part of the mercury before it contacts the surrounding recess with a metal ring.

FIG. 1 shows a general view of the proposed anemorumbograph, and FIG. 2 - contact device.

The anemorumbograph contains the usual Robinson type turntable 7 with hemispheres 2, on the axis of which a worm is mounted to 6, engaging with a worm gear 5.

With the help of the cochlea 4, which is sitting on gear 5 and the tilting mercury contact 3, when the axis of the turntable rotates, the feed is carried out every 100 turns of the cross 381

There are 7 electric pulses per recording part of the device located at a distance from the device.

A vane 7 is mounted slightly below the turntable on a common tubular bracket, which freely rotates on the bearings. At the lower end of the wind vane, a rotating cup 12 with it is reinforced, the lower edge of which is a figurine 4 cap 4, the unfolded view shown in fig. 2. Under the nut of the tubing-holding bracket, all the devices fixedly fixed the box 13 of the insulated materfla, at the bottom of which | BbgiB p ejio around circumference 8 or i (nq of the most countries of the world) recesses 77 filled with mercury. In each of these recesses, a steel or glass ball 9 floats in mercury.

At the bottom of the ebony box 13, in addition, a metal ring 10 is fastened with a series of holes coinciding with the recesses drilled in the bottom of the box. With a free-floating ball, the mercury level in the recesses does not reach the ring and does not close with it. When pressed on the ball, the level rises to contact with the ring W, closing the corresponding electrical circuit. The ball is pressed by means of a figured cam 8 of a cup 72, rotating together with a weather vane. To protect against dust on top of the nickel ring, a second thin ring 15 of insulating material with a corresponding number of holes is hardened. A ball floating on mercury, protruding through this hole, closes tightly the surface of mercury from dust.

To prevent the contacts from oxidizing, the box 13 may be filled with kerosene.

The transmission to the distance of the readings of both devices can be carried out by any known method.

For example, the electrical impulses transmitted by the contact of the turntable can be recorded at the receiving station using a recording device or counted by an electro-electromagnetic counter.

For recording the angle of rotation of the vane, for example, an electrical sensor can be used for resistances.

These resistances 14 are interconnected in series and are included in the transmission line of indications together with the current source. When one of the mercury contacts is turned on, depending on the angle of rotation of the weather vane, a shorting of more or less separate sections of the resistance 14 occurs.

Thus, this mercury system performs the role of a slider rheostat, but without the participation of sliding contacts. As a result of the closure of the resistance section, the total resistance in the transmission circuit will change, which will cause a corresponding deviation of the measuring or recording instrument at the receiving station.

Subject invention

A device for transmitting the angle of rotation of the wind vane of the anemorumbograph, made in the form of an electrical sensor, on the resistances switched by contacts connected to the axis of the weather vane, characterized in that the contacts are made in the form of a series of mercury-filled cylindrical Depressions in the insulating material equipped with balls floating in mercury protruding above the edges of the recesses, with the aim of pressing the cam connected to the axis of the vane when the balls are pressed, the electric circuit is closed as a result squeezing a part of the mercury until it contacts the metal ring surrounding the recess.