CA2996537C - A drum for a towed antenna, and incorporation thereof in a winch or a ship - Google Patents
A drum for a towed antenna, and incorporation thereof in a winch or a ship Download PDFInfo
- Publication number
- CA2996537C CA2996537C CA2996537A CA2996537A CA2996537C CA 2996537 C CA2996537 C CA 2996537C CA 2996537 A CA2996537 A CA 2996537A CA 2996537 A CA2996537 A CA 2996537A CA 2996537 C CA2996537 C CA 2996537C
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- CA
- Canada
- Prior art keywords
- drum
- towed
- towed antenna
- antenna
- winch
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/56—Towing or pushing equipment
- B63B21/66—Equipment specially adapted for towing underwater objects or vessels, e.g. fairings for tow-cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
- B65H67/044—Continuous winding apparatus for winding on two or more winding heads in succession
- B65H67/056—Continuous winding apparatus for winding on two or more winding heads in succession having two or more winding heads arranged in series with each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/14—Kinds or types of circular or polygonal cross-section with two end flanges
- B65H75/146—Kinds or types of circular or polygonal cross-section with two end flanges with at least one intermediate flange between the two end flanges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/40—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
- B65H75/42—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles
- B65H75/425—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable attached to, or forming part of, mobile tools, machines or vehicles attached to, or forming part of a vehicle, e.g. truck, trailer, vessel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/30—Rope, cable, or chain drums or barrels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3843—Deployment of seismic devices, e.g. of streamers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/30—Means for trailing antennas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/35—Ropes, lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/34—Adaptation for use in or on ships, submarines, buoys or torpedoes
Abstract
The invention relates to a drum for a towed antenna, comprising a drive, wherein the drum has a first towed antenna, and wherein a second drum having a second towed antenna can be associated with the drum, wherein, in a case of association, the first towed antenna is connected to the second towed antenna by means of a first connecting unit such that, in the case of a switch from the first drum to the second drum, the first towed antenna runs over onto the second towed antenna or, in the case of a switch from the second drum to the first drum, the second towed antenna runs over onto the first towed antenna. The invention further relates to a winch for a towed antenna, to a towed antenna for towing in water, and to a ship for towing a towed antenna in water.
Description
A DRUM FOR A TOWED ANTENNA, AND INCORPORATION THEREOF IN A
WINCH OR A SHIP
[01] The invention relates to a drum for a towed antenna having a drive, wherein the drum has a first towed antenna, and wherein a second drum having a second towed antenna can be associated with the drum. The invention further relates to a winch for a towed antenna, to a towed antenna for being towed in water, and to a ship for towing a towed antenna in water.
WINCH OR A SHIP
[01] The invention relates to a drum for a towed antenna having a drive, wherein the drum has a first towed antenna, and wherein a second drum having a second towed antenna can be associated with the drum. The invention further relates to a winch for a towed antenna, to a towed antenna for being towed in water, and to a ship for towing a towed antenna in water.
[02] Towed antennas and/or towed sonars are generally used for seismic surveys of the seabed or for locating objects and watercraft underwater. For this purpose, the towed antenna or the towed sonar is towed along under the water on a towing cable by a towing vessel.
[03] To pay out and haul in the towed antenna or towed sonar, a deployment device is generally used on the deck of a watercraft. A winch is used as a deployment device, for example. Since the towed antenna, as an acoustic receiving component, is sensitive to bending and squeezing, the winch drum is generally specially matched to the requirements of the towed antenna and/or of the towing cable. This is associated with the disadvantage that conventional winches cannot be retrofitted and/or adapted to a different towed antenna.
[04] In general, a specially predesigned towed antenna with an associated or included towing cable of the same length and the same diameter is always used for one type of ship, and the deployment device matched thereto is installed in a fixed manner on board. There is generally no conversion of the deployment device, nor is this generally envisaged.
[05] For this reason, there is the disadvantage with deployment devices installed on board that the length and/or diameter of the towed antenna and/or of the towing cable cannot be varied within a short time and/or that it is not possible to use several towed antennas and/or towing cables of different lengths and/or diameters on one deployment device.
[06] One major disadvantage is furthermore that towed antennas and/or towing cables are always supplied in a predesigned length.
[07] It is the object of the invention to improve the prior art.
[08] The object is achieved by a drum for a towed antenna, having a drive, wherein the drum has a first towed antenna, and wherein a second drum having a second towed antenna can be associated with the drum, wherein, in a case of association, the first towed antenna is connected to the second towed antenna by means of a first connecting unit, with the result that, in the case of a changeover from the first drum to the second drum, the first towed antenna crosses over to the second towed antenna or, in the case of a changeover from the second drum to the first drum, the second towed antenna crosses over to the first towed antenna.
[09] In the case of two drums, each having a towed antenna, a longer towed antenna is obtained by means of the first connecting unit. Thus, a smaller, appropriate design of the drums and deployment of a longer towed antenna using just one device are possible.
[10] In particular, this provides an extendable towed antenna which can advantageously be embodied in a variable manner.
[11] One significant concept of the invention is based on the fact that, by means of a connecting unit at one end of the first towed antenna on the first drum connected to one end of the second towed antenna on the second drum, an overall towed antenna is formed which crosses over to the second drum and is unwound automatically during the changeover from the first drum to the second drum. During unwinding, the relationships during the changeover from the second drum to the first drum are correspondingly reversed.
[12] The following terminology may be be explained:
[131 A "drum" (also referred to as a double-flanged reel or cable drum) is, in particular, a reel or roller on which material, in particular material with a round cross section, is wound and/or unwound. In particular, the reel or roller comprises flanks on both outer sides to limit spreading of the rolled-up material. A towed antenna, a towing rope and/or cable, a transmission cable and/or a towed sonar, in particular, are rolled onto or off a drum.
[14] A "towed antenna" is, in particular, a long linear antenna which is towed after a towing cable (or towing rope) behind a ship. In particular, the towed antenna comprises a flexible tubular sleeve in which, in particular, a plurality of hydrophones is arranged. The tubular sleeve can be filled with gel or liquid. In particular, a towed antenna is a component part of a oassive sonar and/or the acoustic receiving component of an active towed sonar. In particular, the towed antenna is towed at a suitable depth and thus operated away from noises made by the towing ship. In particular, the towed antenna also comprises a connected or separate towing cable and/or towing rope.
[15] A "towing cable" (also referred to as a towing rope) is, in particular, a cable or rope which puts in train and/or maintains a mechanical process by pulling. In particular, a towing cable transmits the towing force of a ship to a towed antenna to be pulled through the water.
[16] A "drive" is, in particular, a design unit which moves a drum by means of energy conversion. For this purpose, each drum, in particular, comprises a dedicated drive, or one drive moves a plurality of drums. By means of the driving of the drum and the corresponding rotary motion of the drum, it is possible, in particular, to wind or unwind a towed antenna.
The drive is, in particular, a mechanical, electric and/or hydraulic drive.
[17] A "connecting unit" is, in particular, a device which connects two towed antennas. In particular, the connecting unit is of watertight design and/or designed to be tension-resistant. The connecting unit is, in particular, a plug connection. The connecting unit is, in particular, designed in such a way that, during a drum changeover, the towed antenna unwound or wound first crosses over directly to the next towed antenna. The connection by means of the connecting unit is made, in particular, manually and/or automatically before or during the drum changeover. In particular, the connecting unit comprises an electric and/or optical and/or mechanical connection between the towed antennas and/or towed antenna segments, thereby, in particular, making possible power supply, data transfer and/or a transfer of control signals between the towed antennas and/or the towed antenna segments and the towing ship. In particular, a connecting unit can also connect a towed antenna and/or a towed antenna segment to one towing cable or two towing cables.
[181 "Crossing over" is intended to mean, in particular, that a first towed antenna which is being wound and/or unwound on a first drum automatically changes over to a following second towed antenna situated on a second drum by means of the connecting unit when the end of this first towed antenna is reached, thus ensuring that this second towed antenna is then likewise wound or unwound. In particular, the crossover takes 5 place automatically and/or without interruption of the winding or unwinding process.
[19] In another embodiment of the drum, the first drum is rotatably connected to the second drum.
[20] Thus a rotary motion is imparted to the first drum and the second drum by the same drive. Owing to the fact that only a single drive is used, space is saved. In particular, less installation space on or below the deck of the towing ship is required.
[21] In another aspect of the invention, the object is achieved by a winch for a towed antenna, wherein the winch comprises at least one above-described drum.
[22] This provides a modular winch which can be retrofitted and/or adapted. In particular, the winch can be matched to the requirements of the towed antenna or towed antennas. By virtue of the modularity, the winch is also easier to transport and can thus be swapped between ships and matched easily to the respective type of ship.
[23] In another embodiment of the winch, wherein the winch comprises the first drum and the second drum, the winch comprises a third drum having a third towed antenna and a second connecting unit and/or a fourth drum having a fourth towed antenna and a third connecting unit and/or further drums having further towed antennas and further connecting units, thus enabling all the connected towed antennas to be crossed over and unwound or wound up in succession.
[24] Thus, a winch is provided which can be matched to the towed antenna or the towed antennas and/or to the towing cable and/or to the ship.
[25] By virtue of the fact that the towed antennas are associated with two or more drums, the drums can be matched to the requirements of the towed antennas. In particular, it is thereby possible to avoid a towed antenna being subjected to excessive bending or excessive squeezing.
[26] It is also possible for a towing cable or towing rope and/or a towed body and/or an end piece to be mounted and wound or unwound and connected on a dedicated drum, separately from a towed antenna.
[27] Thus, a winch is provided which can be matched in an optimum manner to the towed antenna and thus to the seismological survey and/or the location method.
[28] By connecting a plurality of towed antennas in each case by means of connecting units, it is possible to provide an overall towed antenna of appropriate length which allows waterborne sound signals, even those with low frequencies, to be received.
[29] By virtue of the connecting units between the towed antennas, these antennas cross over automatically to the next drum during the winding or unwinding, thus avoiding the need to interrupt the process of paying out or hauling in the overall towed antenna and/or the towed sonar and/or the towing cable.
[30] By virtue of the fact that the towed antennas are connected by means of connecting units, a control command to release a particular connecting unit from the platform of the towing ship can be output in the event of danger and/or if the time for hauling in is insufficient, thus ensuring that only one or a few towed antennas/segments are lost, not all the towed antennas/segments.
[31] The "third" and "fourth drum" and the "further drums"
correspond in character to the above-defined drum.
[32] The "third towed antenna", the "fourth towed antenna" and the "further towed antennas" correspond in character to the above-defined towed antenna, wherein, in particular, the towed antenna to be wound or unwound next in each case has the corresponding next connecting unit.
[33] The "second connecting unit", the "third connecting unit"
and the "further connecting units" correspond in character to the above-described connecting unit.
[34] To enable transfer of control signals and/or data signals and/or power supply to be achieved in the case of connected towed antennas, the towed antennas can be connected electrically by the connecting unit or the connecting units in one embodiment of the winch.
[35] Thus, the hydrophones of the towed antenna can be supplied with electric current, control signals can be transferred from a platform on board the towing ship to the towed antenna, and/or data signals based on the waterborne noises received by the hydrophones can be transferred to the platform of the towing ship.
[36] In addition to an electrical connection or instead of an electrical connection, the control signals and/or data signals can also be transferred optically, e.g. via an optical waveguide.
[37] In another embodiment of the winch, the connecting unit or connecting units comprises/comprise a plug connection which is tension-resistant.
[38] It is thereby ensured that the connecting unit does not tear under the tensile loading during winding and unwinding the towed antennas and/or during the towing of the towed antennas in water.
[39] Moreover, a plug connection which is tension-resistant allows quicker and more tension-resistant positive engagement of the plug components, wherein this preferably takes place automatically in the winch as further drums and further towed antennas are connected.
[40] A tension-resistant embodiment of the plug connection makes further safeguards against unintentional release unnecessary.
[41] "Tension-resistant" is intended to mean, in particular, that the connecting unit does not reach the maximum mechanical tensile stress which the connecting unit can withstand before tearing.
[42] A "plug connection" serves, in particular, for disconnecting and connecting towed antennas and/or towed antenna segments and/or a towing cable. In the plug connection, the plug components are, in particular, aligned to fit by positive engagement and fixed in an ultimately releasable manner by spring force, wherein the plug connection is, in particular, of tension-resistant design.
[43] In order to be able to pay out and/or haul in different towed antennas, the towed antennas in another embodiment of the winch have different diameters.
[44] Thus, drums with drum diameters matched to the towed antenna diameters can simultaneously be used and matched to the various minimum permissible radii of curvature of the towed antennas.
[45] Moreover, different layers of the towed antenna and/or of the towing cable can be applied to one drum in each case in accordance with the different diameters of the towed antennas and/or of the towing cable.
[46] The "diameter" of a towed antenna is, in particular, the longest chord perpendicular to the longitudinal axis of the towed antenna.
[47] In another embodiment of the winch, the drive is automatically adaptable to enable the connected towed antennas to be unwound or wound up in succession at a constant speed.
[48] By virtue of the fact that the drive automatically adapts the speed of the rotary movements of the drums, it is also possible to unwind or wind up towed antennas and/or towing cables of different diameters at a constant speed.
[49] If required, it is furthermore also possible for the speed to be reduced or increased by the drive. In particular, the automatically adaptable drive makes it possible to react quickly to dangerous situations, when, for example, the towed antenna or the connected towed antennas have to be hauled in quickly owing to the risk of a collision.
[50] In another aspect of the invention, the object is achieved by a towed antenna for towing in water, wherein the towed antenna comprises at least one first towed antenna segment and a first above-described drum and/or an above-described winch.
[51] A towed antenna is thereby provided which can be wound and/or unwound on a first drum, wherein the first drum is matched to the towed antenna. A winch for paying out and hauling in a towed antenna which is matched to the specific towed antenna is likewise used.
[52] The matched drum and/or winch avoids a situation where the sensitive towed antenna, as the acoustic receiving component, is damaged as it is payed out or hauled in.
[53] A "towed antenna segment" is, in particular, a section of 5 an above-defined towed antenna. In particular, the towed antenna segment has the same diameter and the same length as the preceding and/or the subsequent towed antenna segment, or the towed antenna segment has a different diameter and/or a different length from the preceding or subsequent towed 10 antenna segment. In particular, the towed antenna segment is connected to a preceding and/or subsequent towed antenna segment by means of a connecting unit. In particular, a towed antenna segment can also be a towing cable.
[54] In order to provide a towed antenna matching the requirements, the at least first towed antenna segment is associated with the first drum and/or a second towed antenna segment is associated with the second drum and/or a third towed antenna segment is associated with the third drum and/or a fourth towed antenna segment is associated with the fourth drum and/or further towed antenna segments are associated with further drums, with the result that, in the case of a connection by means of the connecting unit or the connecting units, the connected towed antenna segments and/or towing cables are crossed over and can be unwound or wound up in succession.
[55] A segmentable and adaptable towed antenna is thereby provided which can be matched to the seismological survey and/or the location method and/or the existing drums on board and/or the winch on board a towing ship.
[56] Moreover, manual or automatic coupling and decoupling of towed antenna segments is made possible, and therefore a selected length of the towed antenna and/or of the towing cable can be set.
[57] In particular, a very long overall towed antenna, which allows relatively low frequencies to be received, can be provided by means of a multiplicity of connected towed antenna segments.
[58] Moreover, an active towed sonar can be provided by connection to a towed body as an acoustic transmitting component.
[59] In an additional aspect of the invention, the object is achieved by a ship for towing a towed antenna in water, wherein the ship has a first drum as described above and/or a winch as described above and/or a towed antenna as described above, thus enabling the first drum and/or the winch and/or the towed antenna to be adapted to the ship.
[60] It is thereby possible to provide a ship in which the towed antenna and/or the winch as the paying out and hauling in device and/or the drums can be matched to the ship, in particular to the speed and the available installation space of the ship.
[61] The invention is explained in greater detail below by means of illustrative embodiments. In the drawing:
Figure 1 shows a highly schematized section through a towing ship, a winch and a towed antenna, and Figure 2 shows a highly schematized longitudinal section through a winch having two drums and two towed antennas with a connecting plug.
1621 A towing ship 101 is sailing on the surface 102 of the North Sea. A winch 111 is installed on the stern of the towing ship 101. Hanging from the winch 111 is a towing cable 103, which is connected in the water to a towed body 104. The end of another towing cable 105 is connected to the towed body 104. The other end of the towing cable 105 is connected to the fourth towed antenna segment 107 of a towed antenna 106. The fourth towed antenna segment 107 is connected by means of the third connecting plug 117 to the third towed antenna segment 108. The third towed antenna segment 108 is connected by means of the second connecting plug 118 to the second towed antenna segment 109. The second towed antenna segment 109 is connected by means of the first connecting plug 119 to the first towed antenna segment 110.
[63] The towed antenna segments 107, 108, 109 and 110, together with the connecting plugs 117, 118 and 119, form the towed antenna 106. The towed antenna segments 107, 108, 109 and 110 each have hydrophones 120 and each have a length of 125 m.
[64] The winch 111 comprises six drums. Towed antenna segments 107, 108, 109 and 110 are associated with each of the first four drums. Towing cable 105 is associated with the fifth drum, and towing cable 103, together with the towed body 104, is associated with the sixth drum.
[65] To pay out the towed antenna 106 into the water by means of the winch 111, the first towed antenna segment 110 is first of all unwound from the first drum and, when the first connecting plug 119 reaches a connected end of the first towed antenna segment 110, there is a crossover to the second towed antenna segment 109 and thus a changeover from the first drum to the second drum. After the second towed antenna segment 109 has been unwound, there is once again a crossover by means of
[131 A "drum" (also referred to as a double-flanged reel or cable drum) is, in particular, a reel or roller on which material, in particular material with a round cross section, is wound and/or unwound. In particular, the reel or roller comprises flanks on both outer sides to limit spreading of the rolled-up material. A towed antenna, a towing rope and/or cable, a transmission cable and/or a towed sonar, in particular, are rolled onto or off a drum.
[14] A "towed antenna" is, in particular, a long linear antenna which is towed after a towing cable (or towing rope) behind a ship. In particular, the towed antenna comprises a flexible tubular sleeve in which, in particular, a plurality of hydrophones is arranged. The tubular sleeve can be filled with gel or liquid. In particular, a towed antenna is a component part of a oassive sonar and/or the acoustic receiving component of an active towed sonar. In particular, the towed antenna is towed at a suitable depth and thus operated away from noises made by the towing ship. In particular, the towed antenna also comprises a connected or separate towing cable and/or towing rope.
[15] A "towing cable" (also referred to as a towing rope) is, in particular, a cable or rope which puts in train and/or maintains a mechanical process by pulling. In particular, a towing cable transmits the towing force of a ship to a towed antenna to be pulled through the water.
[16] A "drive" is, in particular, a design unit which moves a drum by means of energy conversion. For this purpose, each drum, in particular, comprises a dedicated drive, or one drive moves a plurality of drums. By means of the driving of the drum and the corresponding rotary motion of the drum, it is possible, in particular, to wind or unwind a towed antenna.
The drive is, in particular, a mechanical, electric and/or hydraulic drive.
[17] A "connecting unit" is, in particular, a device which connects two towed antennas. In particular, the connecting unit is of watertight design and/or designed to be tension-resistant. The connecting unit is, in particular, a plug connection. The connecting unit is, in particular, designed in such a way that, during a drum changeover, the towed antenna unwound or wound first crosses over directly to the next towed antenna. The connection by means of the connecting unit is made, in particular, manually and/or automatically before or during the drum changeover. In particular, the connecting unit comprises an electric and/or optical and/or mechanical connection between the towed antennas and/or towed antenna segments, thereby, in particular, making possible power supply, data transfer and/or a transfer of control signals between the towed antennas and/or the towed antenna segments and the towing ship. In particular, a connecting unit can also connect a towed antenna and/or a towed antenna segment to one towing cable or two towing cables.
[181 "Crossing over" is intended to mean, in particular, that a first towed antenna which is being wound and/or unwound on a first drum automatically changes over to a following second towed antenna situated on a second drum by means of the connecting unit when the end of this first towed antenna is reached, thus ensuring that this second towed antenna is then likewise wound or unwound. In particular, the crossover takes 5 place automatically and/or without interruption of the winding or unwinding process.
[19] In another embodiment of the drum, the first drum is rotatably connected to the second drum.
[20] Thus a rotary motion is imparted to the first drum and the second drum by the same drive. Owing to the fact that only a single drive is used, space is saved. In particular, less installation space on or below the deck of the towing ship is required.
[21] In another aspect of the invention, the object is achieved by a winch for a towed antenna, wherein the winch comprises at least one above-described drum.
[22] This provides a modular winch which can be retrofitted and/or adapted. In particular, the winch can be matched to the requirements of the towed antenna or towed antennas. By virtue of the modularity, the winch is also easier to transport and can thus be swapped between ships and matched easily to the respective type of ship.
[23] In another embodiment of the winch, wherein the winch comprises the first drum and the second drum, the winch comprises a third drum having a third towed antenna and a second connecting unit and/or a fourth drum having a fourth towed antenna and a third connecting unit and/or further drums having further towed antennas and further connecting units, thus enabling all the connected towed antennas to be crossed over and unwound or wound up in succession.
[24] Thus, a winch is provided which can be matched to the towed antenna or the towed antennas and/or to the towing cable and/or to the ship.
[25] By virtue of the fact that the towed antennas are associated with two or more drums, the drums can be matched to the requirements of the towed antennas. In particular, it is thereby possible to avoid a towed antenna being subjected to excessive bending or excessive squeezing.
[26] It is also possible for a towing cable or towing rope and/or a towed body and/or an end piece to be mounted and wound or unwound and connected on a dedicated drum, separately from a towed antenna.
[27] Thus, a winch is provided which can be matched in an optimum manner to the towed antenna and thus to the seismological survey and/or the location method.
[28] By connecting a plurality of towed antennas in each case by means of connecting units, it is possible to provide an overall towed antenna of appropriate length which allows waterborne sound signals, even those with low frequencies, to be received.
[29] By virtue of the connecting units between the towed antennas, these antennas cross over automatically to the next drum during the winding or unwinding, thus avoiding the need to interrupt the process of paying out or hauling in the overall towed antenna and/or the towed sonar and/or the towing cable.
[30] By virtue of the fact that the towed antennas are connected by means of connecting units, a control command to release a particular connecting unit from the platform of the towing ship can be output in the event of danger and/or if the time for hauling in is insufficient, thus ensuring that only one or a few towed antennas/segments are lost, not all the towed antennas/segments.
[31] The "third" and "fourth drum" and the "further drums"
correspond in character to the above-defined drum.
[32] The "third towed antenna", the "fourth towed antenna" and the "further towed antennas" correspond in character to the above-defined towed antenna, wherein, in particular, the towed antenna to be wound or unwound next in each case has the corresponding next connecting unit.
[33] The "second connecting unit", the "third connecting unit"
and the "further connecting units" correspond in character to the above-described connecting unit.
[34] To enable transfer of control signals and/or data signals and/or power supply to be achieved in the case of connected towed antennas, the towed antennas can be connected electrically by the connecting unit or the connecting units in one embodiment of the winch.
[35] Thus, the hydrophones of the towed antenna can be supplied with electric current, control signals can be transferred from a platform on board the towing ship to the towed antenna, and/or data signals based on the waterborne noises received by the hydrophones can be transferred to the platform of the towing ship.
[36] In addition to an electrical connection or instead of an electrical connection, the control signals and/or data signals can also be transferred optically, e.g. via an optical waveguide.
[37] In another embodiment of the winch, the connecting unit or connecting units comprises/comprise a plug connection which is tension-resistant.
[38] It is thereby ensured that the connecting unit does not tear under the tensile loading during winding and unwinding the towed antennas and/or during the towing of the towed antennas in water.
[39] Moreover, a plug connection which is tension-resistant allows quicker and more tension-resistant positive engagement of the plug components, wherein this preferably takes place automatically in the winch as further drums and further towed antennas are connected.
[40] A tension-resistant embodiment of the plug connection makes further safeguards against unintentional release unnecessary.
[41] "Tension-resistant" is intended to mean, in particular, that the connecting unit does not reach the maximum mechanical tensile stress which the connecting unit can withstand before tearing.
[42] A "plug connection" serves, in particular, for disconnecting and connecting towed antennas and/or towed antenna segments and/or a towing cable. In the plug connection, the plug components are, in particular, aligned to fit by positive engagement and fixed in an ultimately releasable manner by spring force, wherein the plug connection is, in particular, of tension-resistant design.
[43] In order to be able to pay out and/or haul in different towed antennas, the towed antennas in another embodiment of the winch have different diameters.
[44] Thus, drums with drum diameters matched to the towed antenna diameters can simultaneously be used and matched to the various minimum permissible radii of curvature of the towed antennas.
[45] Moreover, different layers of the towed antenna and/or of the towing cable can be applied to one drum in each case in accordance with the different diameters of the towed antennas and/or of the towing cable.
[46] The "diameter" of a towed antenna is, in particular, the longest chord perpendicular to the longitudinal axis of the towed antenna.
[47] In another embodiment of the winch, the drive is automatically adaptable to enable the connected towed antennas to be unwound or wound up in succession at a constant speed.
[48] By virtue of the fact that the drive automatically adapts the speed of the rotary movements of the drums, it is also possible to unwind or wind up towed antennas and/or towing cables of different diameters at a constant speed.
[49] If required, it is furthermore also possible for the speed to be reduced or increased by the drive. In particular, the automatically adaptable drive makes it possible to react quickly to dangerous situations, when, for example, the towed antenna or the connected towed antennas have to be hauled in quickly owing to the risk of a collision.
[50] In another aspect of the invention, the object is achieved by a towed antenna for towing in water, wherein the towed antenna comprises at least one first towed antenna segment and a first above-described drum and/or an above-described winch.
[51] A towed antenna is thereby provided which can be wound and/or unwound on a first drum, wherein the first drum is matched to the towed antenna. A winch for paying out and hauling in a towed antenna which is matched to the specific towed antenna is likewise used.
[52] The matched drum and/or winch avoids a situation where the sensitive towed antenna, as the acoustic receiving component, is damaged as it is payed out or hauled in.
[53] A "towed antenna segment" is, in particular, a section of 5 an above-defined towed antenna. In particular, the towed antenna segment has the same diameter and the same length as the preceding and/or the subsequent towed antenna segment, or the towed antenna segment has a different diameter and/or a different length from the preceding or subsequent towed 10 antenna segment. In particular, the towed antenna segment is connected to a preceding and/or subsequent towed antenna segment by means of a connecting unit. In particular, a towed antenna segment can also be a towing cable.
[54] In order to provide a towed antenna matching the requirements, the at least first towed antenna segment is associated with the first drum and/or a second towed antenna segment is associated with the second drum and/or a third towed antenna segment is associated with the third drum and/or a fourth towed antenna segment is associated with the fourth drum and/or further towed antenna segments are associated with further drums, with the result that, in the case of a connection by means of the connecting unit or the connecting units, the connected towed antenna segments and/or towing cables are crossed over and can be unwound or wound up in succession.
[55] A segmentable and adaptable towed antenna is thereby provided which can be matched to the seismological survey and/or the location method and/or the existing drums on board and/or the winch on board a towing ship.
[56] Moreover, manual or automatic coupling and decoupling of towed antenna segments is made possible, and therefore a selected length of the towed antenna and/or of the towing cable can be set.
[57] In particular, a very long overall towed antenna, which allows relatively low frequencies to be received, can be provided by means of a multiplicity of connected towed antenna segments.
[58] Moreover, an active towed sonar can be provided by connection to a towed body as an acoustic transmitting component.
[59] In an additional aspect of the invention, the object is achieved by a ship for towing a towed antenna in water, wherein the ship has a first drum as described above and/or a winch as described above and/or a towed antenna as described above, thus enabling the first drum and/or the winch and/or the towed antenna to be adapted to the ship.
[60] It is thereby possible to provide a ship in which the towed antenna and/or the winch as the paying out and hauling in device and/or the drums can be matched to the ship, in particular to the speed and the available installation space of the ship.
[61] The invention is explained in greater detail below by means of illustrative embodiments. In the drawing:
Figure 1 shows a highly schematized section through a towing ship, a winch and a towed antenna, and Figure 2 shows a highly schematized longitudinal section through a winch having two drums and two towed antennas with a connecting plug.
1621 A towing ship 101 is sailing on the surface 102 of the North Sea. A winch 111 is installed on the stern of the towing ship 101. Hanging from the winch 111 is a towing cable 103, which is connected in the water to a towed body 104. The end of another towing cable 105 is connected to the towed body 104. The other end of the towing cable 105 is connected to the fourth towed antenna segment 107 of a towed antenna 106. The fourth towed antenna segment 107 is connected by means of the third connecting plug 117 to the third towed antenna segment 108. The third towed antenna segment 108 is connected by means of the second connecting plug 118 to the second towed antenna segment 109. The second towed antenna segment 109 is connected by means of the first connecting plug 119 to the first towed antenna segment 110.
[63] The towed antenna segments 107, 108, 109 and 110, together with the connecting plugs 117, 118 and 119, form the towed antenna 106. The towed antenna segments 107, 108, 109 and 110 each have hydrophones 120 and each have a length of 125 m.
[64] The winch 111 comprises six drums. Towed antenna segments 107, 108, 109 and 110 are associated with each of the first four drums. Towing cable 105 is associated with the fifth drum, and towing cable 103, together with the towed body 104, is associated with the sixth drum.
[65] To pay out the towed antenna 106 into the water by means of the winch 111, the first towed antenna segment 110 is first of all unwound from the first drum and, when the first connecting plug 119 reaches a connected end of the first towed antenna segment 110, there is a crossover to the second towed antenna segment 109 and thus a changeover from the first drum to the second drum. After the second towed antenna segment 109 has been unwound, there is once again a crossover by means of
13 the second connecting plug 118 from the second towed antenna segment 109 to the third towed antenna segment 108 and thus a changeover from the second drum to the third drum.
[66] Once the third towed antenna segment 108 has been completely unwound, the third connecting plug 117 brings about an automatic crossover from the third towed antenna segment 108 to the fourth towed antenna segment 107 and thus a changeover from the third drum to the fourth drum.
[67] By means of the winch 111, the fourth towed antenna segment is automatically connected to the towing cable 105 on the fifth drum, which is then unwound. The towing cable 105 is likewise already automatically connected by means of the winch 111 to the towed body 104 and to the towing cable 103 connected thereto, which are then unwound by means of the rotary motion of the sixth drum.
[68] Thus, a towed antenna 106 having four towed antenna segments 107, 108, 109 and 110 has been payed out into the water without damage by means of a matching winch 111 and is towed in an optimum manner through the water.
[69] The towing cables 103 and 105 have a total length of 500 m. The segmented towed antenna 106 with a length of 100 in also receives low frequencies of 50 Hz.
[70] A winch 211 for two towed antenna segments (see figure 2) comprises a first drum 212. The first drum 212 is firmly connected by means of screws 214 at the inner flank to the inner flank of a second drum 213. The first towed antenna 207 is supported on the first drum 212, and the second towed antenna 208 is supported on the second drum 213. The first drum 212 and the second drum 213 are rotatably mounted in a stationary frame 215.
[66] Once the third towed antenna segment 108 has been completely unwound, the third connecting plug 117 brings about an automatic crossover from the third towed antenna segment 108 to the fourth towed antenna segment 107 and thus a changeover from the third drum to the fourth drum.
[67] By means of the winch 111, the fourth towed antenna segment is automatically connected to the towing cable 105 on the fifth drum, which is then unwound. The towing cable 105 is likewise already automatically connected by means of the winch 111 to the towed body 104 and to the towing cable 103 connected thereto, which are then unwound by means of the rotary motion of the sixth drum.
[68] Thus, a towed antenna 106 having four towed antenna segments 107, 108, 109 and 110 has been payed out into the water without damage by means of a matching winch 111 and is towed in an optimum manner through the water.
[69] The towing cables 103 and 105 have a total length of 500 m. The segmented towed antenna 106 with a length of 100 in also receives low frequencies of 50 Hz.
[70] A winch 211 for two towed antenna segments (see figure 2) comprises a first drum 212. The first drum 212 is firmly connected by means of screws 214 at the inner flank to the inner flank of a second drum 213. The first towed antenna 207 is supported on the first drum 212, and the second towed antenna 208 is supported on the second drum 213. The first drum 212 and the second drum 213 are rotatably mounted in a stationary frame 215.
14 [711 A motor 220, by means of which the first drum 212 and the second drum 213 are rotatable about the axis of rotation 219, is secured on the frame 215. The end of the first towed antenna 207 is connected to the second towed antenna 208 by means of a connecting plug 217. The connecting plug 217 is secured on the connected flanks of the first drum 212 and of the second drum 213 by means of a holder 216. The frame 215 has a guiding slide 218.
[72] To unwind the first towed antenna 207, the first end of the towed antenna 207 is guided via the guiding slide 218. The motor 220 is started and the first drum 212 is rotated at a constant speed with the rotatably connected second drum 213, the first towed antenna 207 thus being unwound and payed out into the water. Once the first towed antenna 207 has been completely unwound, the first towed antenna 207 crosses over through th2 connecting plug 217 to the second towed antenna 208, and the second towed antenna 208 on the second drum 213 is unwound. During the crossover, the holder 216 is released automatically and releases the connecting plug 217. As soon as the second towed antenna 208 has been unwound, the towing cable (not shown) on a second winch (not shown) is unwound until the towed antennas 207 and 208 have been payed out completely in the water.
lb List of reference signs 101 towing ship 102 surface of the water 103 towing cable 104 towed body 105 towing cable 106 towed antenna 107 fourth towed antenna segment 108 third towed antenna segment 109 second towed antenna segment 110 first towed antenna segment 111 winch 117 third connecting plug 118 second connecting plug 119 first connecting plug 120 hydrophones 207 first towed antenna 208 second towed antenna 211 winch 212 first drum 213 second drum 214 screws 215 frame 216 holder 217 connecting plug 218 guiding slide 219 axis of rotation 220 motor
[72] To unwind the first towed antenna 207, the first end of the towed antenna 207 is guided via the guiding slide 218. The motor 220 is started and the first drum 212 is rotated at a constant speed with the rotatably connected second drum 213, the first towed antenna 207 thus being unwound and payed out into the water. Once the first towed antenna 207 has been completely unwound, the first towed antenna 207 crosses over through th2 connecting plug 217 to the second towed antenna 208, and the second towed antenna 208 on the second drum 213 is unwound. During the crossover, the holder 216 is released automatically and releases the connecting plug 217. As soon as the second towed antenna 208 has been unwound, the towing cable (not shown) on a second winch (not shown) is unwound until the towed antennas 207 and 208 have been payed out completely in the water.
lb List of reference signs 101 towing ship 102 surface of the water 103 towing cable 104 towed body 105 towing cable 106 towed antenna 107 fourth towed antenna segment 108 third towed antenna segment 109 second towed antenna segment 110 first towed antenna segment 111 winch 117 third connecting plug 118 second connecting plug 119 first connecting plug 120 hydrophones 207 first towed antenna 208 second towed antenna 211 winch 212 first drum 213 second drum 214 screws 215 frame 216 holder 217 connecting plug 218 guiding slide 219 axis of rotation 220 motor
Claims (12)
1. A drum for a towed antenna, having a drive, wherein the drum has a first towed antenna, and wherein said drum is a first drum configured for association with a second drum having a second towed antenna, wherein in a case of association, the first towed antenna is connected to the second towed antenna by means of a first connecting unit, with the result that, in the case of a changeover from the first drum to the second drum, the first towed antenna crosses over to the second towed antenna or, in the case of a changeover from the second drum to the first drum, the second towed antenna crosses over to the first towed antenna, wherein the first connecting unit is secured at the first drum and at the second drum by means of a holder and wherein the holder is released automatically during crossover and releases the first connecting unit.
2. The drum as claimed in claim 1, wherein the first drum is rotatably connected to the second drum.
3. The drum as claimed in claim 1 or 2, wherein the first towed antenna is guided via a guiding slide.
4. A winch for a towed antenna, wherein the winch comprises at least one drum as claimed in any one of claims 1 to 3.
5. The winch as claimed in claim 4, wherein the winch comprises the first drum and the second drum, wherein the winch comprises a third drum having a third towed antenna and a second connecting unit and/or a fourth drum having a fourth towed antenna and a third connecting unit and/or further drums having further towed antennas and further connecting units, thus enabling all the connected towed antennas to be crossed over and unwound or wound up in succession.
6. The winch as claimed in claim 5, wherein the towed antennas can be connected electrically by the connecting unit or the connecting units, with the result that, in the case of the connected towed antennas, transfer of control signals and/or data signals and/or power supply can be achieved.
7. The winch as claimed in any one of claims 4 to 6, wherein the connecting unit or the connecting units comprises or comprise a plug connection which is resistant to tension.
8. The winch as claimed in any one of claims 4 to 7, wherein the towed antennas have different diameters.
9. The winch as claimed in any one of claims 4 to 8, wherein the drive is automatically adaptable, thus enabling the connected towed antennas to be unwound or wound up consecutively at a constant speed.
10. A towed antenna for towing in water, wherein the towed antenna comprises at least one first towed antenna segment, characterized by a drum as claimed in any one of claims 1 to 3 or a winch as claimed in any one of claims 4 to 9.
11. The towed antenna as claimed in claim 10, wherein the at least first towed antenna segment is associated with the first drum, and/or a second towed antenna segment is associated with the second drum, and/or a third towed antenna segment is associated with the third drum, and/or a fourth towed antenna segment is associated with the fourth drum, and/or further towed antenna segments are associated with further drums, with the result that, in the case of a connection by means of the connecting unit or the connecting units, the connected towed antenna segments are crossed over and can be unwound or wound up in succession.
12. A ship for towing a towed antenna in water, said ship comprising a first drum as claimed in any one of claims 1 to 3 or a winch as claimed in any one of claims 4 to 9 or a towed antenna as claimed in claim 10 or 11.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015114375.5A DE102015114375A1 (en) | 2015-08-28 | 2015-08-28 | Drum for a towed antenna, winch for a towed antenna, towed antenna for towing in the water and a ship for towing a towed antenna in the water |
| DE102015114375.5 | 2015-08-28 | ||
| PCT/DE2016/100345 WO2017036442A1 (en) | 2015-08-28 | 2016-07-28 | Drum for a towed-antenna winch for a towed antenna, towed antenna for towing in water, and ship for towing a towed antenna in water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2996537A1 CA2996537A1 (en) | 2017-03-09 |
| CA2996537C true CA2996537C (en) | 2020-12-15 |
Family
ID=56851319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2996537A Active CA2996537C (en) | 2015-08-28 | 2016-07-28 | A drum for a towed antenna, and incorporation thereof in a winch or a ship |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3341282A1 (en) |
| CA (1) | CA2996537C (en) |
| DE (1) | DE102015114375A1 (en) |
| WO (1) | WO2017036442A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3088629B1 (en) * | 2018-11-19 | 2020-12-11 | Mecabolier | Winding-unwinding installation of a towed cable |
| CN109633659B (en) * | 2019-01-19 | 2023-03-24 | 天津大学 | Tiny sonar array system and device for realizing underwater monitoring by combining unmanned ship |
| RU193837U1 (en) * | 2019-05-14 | 2019-11-18 | Акционерное Общество "Концерн "Океанприбор" | HYDRODYNAMIC MUFFLER FOR A HYDROACOUSTIC STATION WITH A FLEXIBLE TOWED ANTENNA FOR A SPREAD SHIP |
| CN111824855B (en) * | 2020-07-29 | 2022-04-12 | 广东电网有限责任公司 | Winding device |
| NL2026180B1 (en) * | 2020-07-30 | 2022-04-04 | Hydrauvision Raamsdonksveer B V | A vehicular arrangement for the simultaneous collection of a first flexible hose and a second flexible hose |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19719306C2 (en) * | 1997-05-07 | 2000-05-18 | Stn Atlas Elektronik Gmbh | Towed body |
| DE19743096C1 (en) * | 1997-09-26 | 1999-01-28 | Stn Atlas Elektronik Gmbh | Transmission antenna for sonar system for towing behind a waterborne vehicle |
| FR2822960B3 (en) * | 2001-03-30 | 2003-06-20 | Thomson Marconi Sonar Sas | LOW FREQUENCY UNDERWATER DETECTION SYSTEM |
| GB0223964D0 (en) * | 2002-10-15 | 2002-11-20 | Deep Tek Ltd | Apparatus and a method for use in handling a load |
| DE10262054B4 (en) * | 2002-10-30 | 2005-08-25 | Atlas Elektronik Gmbh | Application device for an underwater towed antenna |
| FR2900504B1 (en) * | 2006-04-26 | 2009-11-20 | Thales Sa | METHOD FOR OPTIMIZING THE POWER SUPPLY OF A LINEAR TRANSMITTED TRANSMITTER ANTENNA FOR TRANSMITTING IN OMNIDIRECTIONAL MODE. |
| US8021080B2 (en) * | 2007-04-26 | 2011-09-20 | Westerngeco L.L.C. | Containerized geophysical equipment handling and storage systems, and methods of use |
| NO330246B1 (en) * | 2009-02-25 | 2011-03-14 | Odim Asa | Method and device for handling ropes |
| US9001623B1 (en) * | 2011-12-06 | 2015-04-07 | Raytheon Company | Sonar systems and sonar methods that use a tow body having a towed acoustic projector for which an orientation can be changed while being towed |
| FR2994559B1 (en) * | 2012-08-17 | 2015-06-05 | Thales Sa | DEVICE FOR LAUNCHING THE RECOVERY OF A SONAR TRAILER |
-
2015
- 2015-08-28 DE DE102015114375.5A patent/DE102015114375A1/en active Pending
-
2016
- 2016-07-28 WO PCT/DE2016/100345 patent/WO2017036442A1/en active Application Filing
- 2016-07-28 EP EP16758086.9A patent/EP3341282A1/en active Pending
- 2016-07-28 CA CA2996537A patent/CA2996537C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015114375A1 (en) | 2017-03-02 |
| CA2996537A1 (en) | 2017-03-09 |
| EP3341282A1 (en) | 2018-07-04 |
| WO2017036442A1 (en) | 2017-03-09 |
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