1.8 meters miniaturization reception antennas of high-frequency ground wave radar
Technical field
The utility model relates to the structure of 1.8 meters miniaturization reception antennas of high-frequency ground wave radar, belongs to the radar antenna technical field of structures.
Background technology
The radar station operated by rotary motion compares rugged environment at landforms more complicated, weather conditions, and such as the radar station that is built in the seashore, reception antenna internal electrical device is damaged by the erosion of salt fog, moisture; Traditional reception antenna is for obtaining higher gain, the antenna area volume that adopts is all very big, anti-high wind ability, floor space is big, the risk factor that is struck by lightning is higher, and the length of for example traditional OS071 high-frequency ground wave radar reception antenna is 7 meters, and its reception antenna main body section all adopts metal tube to connect, both seemed heavy, on-the-spot installation, attended operation show inconvenience again.
Summary of the invention
1.8 meters miniaturization reception antennas of the high-frequency ground wave radar that the utility model provides, the high-frequency ground wave radar reception antenna length of 7 meters long of tradition is reduced to 1.8 meters, electric property and former reception antenna basically identical, and all less than 2, reduced the loss of signal at high-frequency ground wave radar work full frequency band scope standing internal wave.Particularly wherein adopt all-sealed structure and lightning-arrest design, avoided antenna internal electrical device damaged by the erosion infringement and the thunderbolt of salt fog, moisture as far as possible.
1.8 meters miniaturization reception antennas of high-frequency ground wave radar, comprise match circuit plate group, circuit board support, ring flange, gland, seat is threaded, reinforced joint, the socket fuse, housing, insulating case, conducting rod, the bearing nut, the reception antenna fuse, outer tube, lightning arrester, surge arrester support, packing ring, top cover, stem stem, the line dish, supporting pin, caprone cable and everywhere sealing gasket and sealing ring, its annexation is: lightning arrester is installed in the installing hole at ring flange center by surge arrester support, match circuit plate group is installed on the circuit board support that is fixed in the ring flange upper end and is positioned at lightning arrester one side, housing is sleeved on the connection platform of ring flange and by screw, sealing ring and the sealing of housing joint face formation are housed on the ring flange connection platform, the seat that is threaded connects the surface up and down sealing ring all is housed, the seat that is threaded is fixedly connected on the housing top, reinforced joint is fixedlyed connected with a last joint face that is threaded, insulating case is sleeved in the center stepped hole of reinforced joint, conducting rod is installed in the insulating case central through hole, conducting rod bottom gang socket fuse, the insulating case upper end connects the bearing nut, the reception antenna fuse is fixedlyed connected with the bearing nut after being sleeved on the stem stem after by the enamelled wire coiling again, outer tube sleeve is connected on the reception antenna outside core and stretches into reinforced joint inside, outer tube adds sealing gasket by gland and is fixed on the reinforced joint, the gap location encapsulated epoxy resin glue of outer tube and reinforced joint; For preventing reception antenna fuse retraction, at the cylindrical side equal intervals of the stem stem supporting pin of packing into, so that the typing of reception antenna fuse also makes reception antenna fuse axis direction and outer tube dead in line; When passing through final molding more simultaneously, toward the interior embedding EPS foamed glue of outer tube, so that the reception antenna fuse is loosening, the top of outer tube is by top seal; When antenna body is installed at the scene, suit line dish on outer tube, and by three caprone cables with the line dish move to three ground grasps on, thereby make it reliable and stable, improved the uprising wind and rain ability of antenna.
Operation principle: receive sea echo signal by antenna, in reception antenna fuse, induce required frequency current signal with the rich system of enamelled wire, import signal into match circuit plate group via conducting rod, socket fuse, through the match circuit plate carries out filtering and characteristic impedance of antenna coupling to signal after, insert lightning arrester again, process lightning arrester, reception cable are with the signal access device again.Will just can enter radar equipment through lightning arrester earlier owing to receive the sea echo signal of coming, radar equipment just can not broken by the high-voltage signal of thunder and lightning under bad weather work like this, and equipment has been played effectively protection.
Beneficial effect: the anti-high wind ability of this antenna is good, and floor space is little, and is little by the risk factor that is struck by lightning, and at high-frequency ground wave radar work full frequency band scope standing internal wave all less than 2, reduced the loss of signal.Encapsulated epoxy resin glue in the slit between outer tube and the reinforced joint, each electric device is among the environment of a hermetically drying in the antenna body thereby make, thereby avoided electric device to be subjected to the corrosion-damaged of seashore salt fog, moisture, thereby guaranteed that the long-term serviceability of product is reliable and stable; Outer tube is selected high-intensity glass-reinforced plastic material for use, and it had both had enough good intensity, and weight is light again.The screw that exposes on the antenna body all adopts stainless steel material, and is can corrosion so that it exposes to the sun and rain for a long time inexcessive, safeguards thereby be convenient to dismounting.
Description of drawings
Fig. 1 is 1.8 meters miniaturization reception antenna polycrystalline substance schematic diagrames of the utility model high-frequency ground wave radar;
Fig. 2 is 1.8 meters miniaturization reception antenna top structure schematic diagrames of the utility model high-frequency ground wave radar;
Wherein: 1-match circuit plate group, 2-circuit board support, 3-ring flange, 4-housing, 5-be threaded seat, 6-reinforced joint, 7-socket fuse, 8-gland, 9-sealing gasket, 10-insulating case, 11-conducting rod, 12-bearing nut, 13-reception antenna fuse, 14-outer tube, 15-lightning arrester, 16-surge arrester support, 17-sealing ring C, 18-sealing ring A, 19-sealing ring B, 20-top cover, 21-stem stem, 22-line dish, 23-supporting pin, 24-caprone cable.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further details
As shown in Figure 1,1.8 meters miniaturization reception antennas of high-frequency ground wave radar, comprise match circuit plate group 1, circuit board support 2, ring flange 3, gland 8, seat 5 is threaded, reinforced joint 6, socket fuse 7, housing 4, insulating case 10, conducting rod 11, bearing nut 12, reception antenna fuse 13, outer tube 14, lightning arrester 15, surge arrester support 16, top cover 20, stem stem 21, line dish 22, supporting pin 23, caprone cable 24 and everywhere sealing gasket 9 and sealing ring, its annexation is: lightning arrester 15 is installed in the installing hole at ring flange 3 centers by surge arrester support 16, match circuit plate group 1 is installed on the circuit board support 2 that is fixed in ring flange 3 upper ends and is positioned at lightning arrester 15 1 sides, housing 4 is sleeved on the connection platform of ring flange 3 and by screw, sealing ring C17 and the sealing of housing joint face formation are housed on the ring flange 3 connection platforms, the seat 5 that is threaded connects the surface up and down sealing ring B19 and sealing ring A18 is housed respectively, the seat 5 that is threaded is fixedly connected on housing 4 tops, reinforced joint 6 is fixedlyed connected with joint face on the seat 5 that is threaded, insulating case 10 is sleeved in the center stepped hole of reinforced joint 6, conducting rod 11 is installed in insulating case 10 central through holes, conducting rod 11 bottom gang socket fuses 7, insulating case 10 upper ends connect bearing nut 12, reception antenna fuse 13 is fixedlyed connected with bearing nut 12 after being sleeved on the stem stem 21 after by the enamelled wire coiling again, outer tube 14 is socketed in reception antenna fuse 13 outsides and stretches into reinforced joint 6 inside, outer tube 14 adds sealing gasket 9 by gland 8 and is fixed on the reinforced joint 6 the gap location encapsulated epoxy resin glue of outer tube and reinforced joint 6; For preventing reception antenna fuse 13 retraction, at the cylindrical side equal intervals of stem stem 12 supporting pin 13 of packing into, so that 13 typings of reception antenna fuse also make reception antenna fuse 13 axis directions and outer tube 14 deads in line; When passing through final molding more simultaneously, toward outer tube 14 interior embedding EPS foamed glues, so that reception antenna fuse 7 is loosening, the top of outer tube 14 is by top cover 20 sealings; When antenna body is installed at the scene, suit line dish 22 on outer tube 14, and by three caprone cables 24 with line dish 22 move to three ground grasps on, thereby make it reliable and stable, improved the uprising wind and rain ability of antenna.
Operation principle: receive sea echo signal by antenna, in reception antenna fuse 7, induce required frequency current signal with the rich system of enamelled wire, import signal into match circuit plate group 1 via conducting rod 6, socket fuse 9, after 1 pair of signal of match circuit plate carries out filtering and characteristic impedance of antenna coupling, insert lightning arrester 15 again, process lightning arrester 15 is by receiving cable with the signal access device again; Be threaded seat 5, reinforced joint 6, gland 8, insulating case 10, outer tube 14, top cover 20, stem stem 21, bearing nut 12, ring flange 3, sealing ring C17, sealing ring A18, sealing ring B18 and sealing gasket 9 is the structural member that satisfies antenna work, installation and sealing.