RU169099U1 - ANTENNA-FEEDER DEVICE FOR A POP-UP MARINE RADIO HYDROACOUSTIC BUOY - Google Patents

Abstract

The utility model is part of a marine radio-acoustic buoy (RSL), designed to receive / transmit information about the underwater environment through a sonar channel and a radio channel. An antenna-feeder device for a pop-up marine radio-acoustic buoy is proposed. buoy, and on the other hand has a rectangular circular groove along the generatrix, in which a rubber sealing ring is installed, hermetically connecting the lower and upper parts of the truncated cone whisker and protruding from the surface of the cone, while in the dielectric plug there is a through hole, in the upper part of which there is an oil seal, through which the vibrator and the lifting device are mechanically connected, and the protective cap of the vibrator is made transparent and mounted on the vibrator. This provides the possibility of the RSL in the above-water position and its tightness in the underwater position. 1 ill.

Description

The utility model is part of a marine radio-acoustic buoy (RSL), designed to receive / transmit information about the underwater environment through a sonar channel and a radio channel. RSL are used for military purposes [1], as well as in research and monitoring of the oceans and other water areas.

The RSL consists of two main modules: sonar, intended for receiving / transmitting information via a sonar channel, and radio engineering, intended for receiving / transmitting information via a radio channel. Both modules are located in a single housing. RSL is thrown into the water from aircraft (helicopters) or released from a submarine. After being released into water, the RSL pops up, releasing a sonar antenna into the water, and a radio antenna into the air. Structurally, the radio antenna of the RSL differs little from the radio antennas of a similar frequency range used, in particular, in automobiles. The main distinctive requirements of the RSL radio antenna are the need to ensure the tightness of the case and the ability to work in the air in the working position of the radio antenna, as well as the requirement for the dimensions of the vibrator, which in the idle position should be placed in the RSL case.

A number of antenna designs are known that provide communication in a given frequency range and can be placed on moving media. Thus, the patent [2] proposes the design of a whip antenna that is resistant to wind loads. In the patent [3], in one fairing it is proposed to place a multi-band antenna, the vibrator of which has taps on amplifiers of different frequency ranges, and in the patent [4] a design of a telescopic antenna is proposed, which can be tuned to the desired frequency range. General disadvantages of the designs of the proposed antennas is the inability to ensure their operation as part of the RSL due to the lack of sealing during actual operation in sea water, and in the case of the antenna according to the patent [4] also by its large size.

The closest in functional and structural characteristics to the proposed utility model of the RSL antenna is the antenna-feeder device (AFU) of the sonar buoy according to the patent [5].

In the antenna-feeder device [5] ,. an antenna with a radiator (vibrator) is placed inside a rubberized elastic shell having a toroidal base and closed in a folded form by a hermetic protective cap that is discarded when the shell is filled and fastened to the housing by three uniformly distributed shear pins having a groove whose center coincides with the interface line of the outer surface grooves of the beacon body with the inner mating surface of the cap. In addition, the beacon body is streamlined with no protruding elements.

In the described antenna-feeder device there is no possibility of sealing its antenna when the RSL is immersed in the marine environment

The objective of the utility model is to ensure the integrity of the RSL in the underwater position.

The technical result of the utility model is to ensure reliable sealing of the AFU when immersing the RSL.

To ensure this technical result, new features have been introduced into the antenna-feeder device of a pop-up marine radio-acoustic buoy containing a vibrator and a protective cap of a vibrator, namely; a dielectric plug having the shape of a truncated cone consisting of lower and upper parts is installed in the top cover of the buoy, the lower part of the truncated cone being attached to the body of the buoy on the one hand and, on the other hand, having a rectangular circular groove along the generatrix, in which a rubber sealing ring is installed tightly connecting the lower and upper parts of the truncated cone and protruding from the surface of the cone, while in the dielectric plug there is a through hole, in the upper part of which there is an oil seal, black of which is mechanically connected to a vibrator and a lifting device, and a protective cap configured vibrator radio waves and fixed on the vibrator.

This embodiment of the AFU allows you to retract the antenna vibrator into the housing when the RSL goes into the underwater position without violating its tightness.

The essence of the utility model is illustrated in FIG. 1, which schematically shows the design of the claimed AFU

A dielectric plug 4 having the shape of a truncated cone is installed in the top cover 6 of the RSL. The lower part of the dielectric plug (truncated cone) 4 is attached to the cover of the buoy 6, and on the other hand, the lower part has a rectangular circular groove along the generatrix, in which a rubber sealing ring 5 protrudes beyond the outer surface of the cone and connects the upper and lower parts of the dielectric plug 4 . In the dielectric plug 4., a through hole is made, in the upper part of which an oil seal 1 is installed, which mechanically connects the antenna vibrator 2 and the lifting device 7. At the upper end of the antenna vibrator, with A protective cap 3 made of radiolucent is placed by the hinge.

When immersing the RSL, the antenna vibrator 2 is pulled into the housing with the help of a lifting device 8, the protective cap 3 with its inner cone sits on the outer cone of the dielectric plug 4 and abuts against the o-ring 5. The protective cap abuts with its inner conical part to the plug 4, which is ensured by the installation of the cap 3 at the outer end of the antenna vibrator 2 through a movable joint. External pressure seals the cone connection by compressing the air bag in the upper part of the protective cap 3 and protects the antenna, stuffing box and internal volume from external hydrostatic pressure. When surfacing, the control controller includes a lifting device 7 for installing the antenna, the antenna vibrator 2 exits the buoy cavity through the cone 4 with the gland and is pushed to the required length by the lifting device 7.

The design of the upper sealed buoy cover with a cone-shaped protrusion for the output of the antenna vibrator eliminates the possibility of water leakage when the vibrator is pulled into the buoy body, and the cone plug at the upper end of the antenna vibrator with an air volume and a ball joint in its upper part provides reliable detachable sealing of the antenna output when immersed.

At the end of the communication session, the lifting device 7 lowers the antenna vibrator 2 into the buoy volume. The buoy is ready to dive.

The antenna vibrator material, its diameter and length are calculated based on the value of the carrier frequency of the subband of the used radio modem.

Thus, achieving the claimed technical result is achieved.

Information sources

1. Forsky L. Radiocommunication buoys of the Navy of foreign countries - Zarub. Military Review, 2000, No. 11

2. Pat. RF for utility model No. 57972. Whip antenna IPC H01Q 1/36. Claim 06/13/2006, publ. 10/23/2006.

3. Pat. RF for utility model No. 117042. Combined antenna-feeder device. IPC H01Q 9/00. Claim 11/11/2011, publ. 08/10/2012.

4. Pat. RF for utility model No. 139088. Telescopic whip antenna. IPC H01Q 1/00. Claim 12/03/2013, publ. 04/10/2014.

5. Pat. RF №2283520. Beacon IPC H01Q 1/34. Claim 02.02.2005, publ. 09/10/2006.

Claims (1)

Antenna-feeder device for a pop-up marine radio-acoustic buoy containing a vibrator and a protective cap of a vibrator, characterized in that a dielectric plug having the shape of a truncated cone consisting of lower and upper parts is installed in the upper cover of the buoy, the lower part of the truncated cone being attached to one side to the buoy body, and on the other hand has a rectangular circular groove along the generatrix, in which a rubber sealing ring is installed, hermetically connecting the lower and upper parts of the truncated and whiskers extending from the surface of a cone, with a dielectric tube has a through hole in the upper part of which is mounted gland through which a vibrator mechanically connected and the lifting device, and a protective cap configured vibrator radio waves and fixed on the vibrator.

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