A kind of hard streamer cable and its production process

Abstract

The present invention discloses a hard streamer cable and its production process, which includes the following steps: preparation, weaving, gluing and cutting, using a gluing tool to gluing the streamers hung in the streamer lead-out tooling, so that the surface of the streamers is covered with glue for shaping, and using a drying device to heat the streamers to accelerate the curing of the glue to obtain a hard streamer, and using a hot cutting tool to cut the hard streamers in a closed-loop structure to form two independent streamers to obtain a hard streamer cable. Through the above manner, the hard streamer cable and its production process described in the present invention use glue to shape the streamers, which increases the surface hardness and toughness of the streamers, keeps them straight underwater, avoids mutual entanglement between streamers, reduces underwater resistance, and is conducive to improving the effect of suppressing vortex-induced vibrations, and the streamers can be bent and elastically reset, which is convenient for multi-layer cable arrangement on the winch.

Description

Technical Field

[0001] The invention relates to the field of streamer cables, in particular to a hard streamer cable and a production process thereof. Background Art

[0002] Ocean exploration usually requires underwater sonar systems for acoustic measurements, in which the ocean towing cable serves to connect the mother ship and the transducer, and can transmit electrical energy and signals. Underwater exploration requires the transducer to descend to a certain depth, and at the same time, it is hoped that the cable release length is short. During the towing detection process, the towing cable is affected by the resistance of the seawater. The greater the resistance, the longer the towing cable is required to descend to the same depth. At the same time, vortex-induced vibration will be formed during the towing process, causing the towing cable to shake violently, increasing the towing resistance. At the same time, the vibration noise increases the noise level of the transducer.

[0003] In order to improve the vibration level of the towing cable and reduce the towing resistance, the usual method is to add a layer of guide device to the outer layer of the towing cable, and change the fluid state around the towing cable through the guide device. The guide device is mostly a guide vane at the part of the towing cable close to the transducer, and a woven streamer is used at the part away from the transducer. Among them, the fixed guide vane has a good effect, but it needs to be rigidly connected to the towing cable and has a fixed shape. The cable can only be arranged on the outer layer of the winch, which is not suitable for multi-layer cable arrangement; although the guide effect of the streamer is not as good as the guide effect of the guide vane, the streamer is suitable for bending, which is convenient for multi-layer cable arrangement on the winch and more convenient to use.

[0004] The overall structure of the streamers used in the existing streamer cables is relatively soft. During use, the streamers may become entangled with each other, which affects the laying of the cable. Moreover, when used underwater, the effect of suppressing vortex-induced vibration is not ideal. Summary of the invention

[0005] The main technical problem solved by the present invention is to provide a hard streamer cable and a production process thereof, so as to increase the hardness and toughness of the streamer, enhance the effect of suppressing vortex-induced vibration, and ensure multi-layer cable arrangement on the winch.

[0006] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a production process of a hard streamer cable, comprising the following steps:

[0007] Preparation: Place the cable on the pay-off rack, pass one end of the cable through the braiding machine and the traction equipment in turn, put the rolled yarn and ribbon on the spindle of the braiding machine, adjust the position of the ribbon lead-out tooling on the braiding machine, and ensure that the length of the ribbon after subsequent braiding meets the design requirements;

[0008] Weaving: Turn on the traction equipment and braiding machine to pull the cable, and mix the yarn and ribbon on the cable surface, so that the ribbons are hung into the ribbon lead-out tooling at intervals, and move forward with the cable in a closed loop structure. Adjust the pitch of the braiding machine so that the ribbons are positioned on the cable according to the required spacing;

[0009] Gluing: Use glue-coating tools to glue the ribbons hung in the ribbon lead-out tooling, so that the surface of the ribbons is covered with glue for shaping, and use drying equipment to heat the ribbons to accelerate the curing of the glue to obtain hard ribbons;

[0010] Cutting: As the cable continues to move forward, a thermal cutting tool is used to cut the hard ribbon in a closed loop structure to form two independent ribbons to obtain a hard ribbon cable, which is then introduced into a take-up frame for winding and take-up.

[0011] In a preferred embodiment of the present invention, armored steel wires are provided on the surface of the cable, and a power line is provided in the cable.

[0012] In a preferred embodiment of the present invention, an optical fiber is arranged in the cable.

[0013] In a preferred embodiment of the present invention, the arrangement spacing of the ribbons in the length direction of the cable is 15 mm to 30 mm, and the ribbons extend simultaneously on opposite sides of the same cross section of the cable.

[0014] In a preferred embodiment of the present invention, the drying equipment adopts a hot air oven, the drying temperature is 60°C~80°C, the traction speed of the traction equipment is 0.5m / s~1m / s, and the temperature of the drying equipment is adjusted to adapt to the traction speed of the cable, so that the glue on the ribbon is dried before cutting to avoid mutual adhesion after cutting.

[0015] In a preferred embodiment of the present invention, the temperature of the thermal cutting tool is not lower than 250° C., so as to ensure thermal melting of the ribbon when the thermal cutting tool contacts the ribbon.

[0016] In a preferred embodiment of the present invention, the glue is a water-based adhesive with a viscosity of 5000cps~10000cps, and the gluing tool is a gluing brush, a gluing roller or an atomizing gluing nozzle, and the gluing tool is distributed on one or both sides of the ribbon lead-out tooling to gluing the ribbon.

[0017] In a preferred embodiment of the present invention, the yarn is made of polyester yarn, and the ribbon is made of polyester ribbon.

[0018] In a preferred embodiment of the present invention, the thickness of the ribbon is 0.3-0.5 mm, the width is 4-6 mm, the coating thickness of the glue does not exceed 0.1 mm, and the length of the ribbon after cutting is 15 cm-25 cm.

[0019] In order to solve the above technical problems, another technical solution adopted by the present invention is: to provide a hard streamer cable, which is manufactured by the above-mentioned production process of the hard streamer cable.

[0020] The beneficial effects of the present invention are: a hard streamer cable and its production process pointed out by the present invention, yarns and streamers are mixed through a braiding machine, and the streamers are shaped by glue, which increases the surface hardness and toughness of the streamers, keeps them straight underwater, avoids mutual entanglement between streamers, reduces underwater resistance, is beneficial to improving the underwater diversion effect and suppressing vortex-induced vibration, and can be bent and elastically reset, easily realizing multi-layer cable arrangement on the winch, is convenient to use and retract, and is easy to produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0022] Figure 1 It is a schematic diagram of an assembly line used in a preferred embodiment of a production process for a hard streamer cable of the present invention. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1 , the embodiment of the present invention includes:

[0025] A production process for a rigid streamer cable comprises the following steps:

[0026] Preparation: Place the cable on the pay-off rack 1. In this embodiment, armored steel wires are arranged on the surface of the cable, and a power line is arranged in the cable to form an armored cable with an outer diameter of 21 mm. In addition, an optical fiber is also arranged in the cable to form an optoelectronic composite cable, which has a wider range of applications.

[0027] Pass one end of the cable through the braiding machine 2 and the traction device 6 in sequence, put the wound yarn and the streamer on different spindles of the braiding machine 2, adjust the position of the streamer lead-out tooling on the braiding machine 2, and ensure that the length of the streamer after subsequent braiding meets the design requirements; the yarn can be polyester yarn, and the streamer can be polyester streamer, which has high tensile strength and good wear resistance;

[0028] Weaving: Turn on the traction device 6 and the braiding machine 2 to pull the cable, and mix the yarn and the ribbon on the surface of the cable so that the ribbon is hung into the ribbon lead-out tooling at intervals (the yarn is not hung into the ribbon lead-out tooling), and the ribbon moves forward with the cable in a closed loop structure. Adjust the pitch of the braiding machine so that the ribbon is positioned on the cable according to the required spacing. In this embodiment, the arrangement spacing of the ribbon in the length direction of the cable is 15mm~30mm, and the ribbon is extended at the same time on both sides of the same cross section of the cable;

[0029] Gluing: Gluing the ribbons hung in the ribbon lead-out tooling with a glue coating tool 3, so that the surface of the ribbons is covered with glue for shaping, and the ribbons are heated with a drying device 4 to accelerate the curing of the glue to obtain a hard ribbon; in addition, the glue on the ribbons is also conducive to increasing the reliability of the connection between the ribbons and the yarns and armored steel wires, and the structure is more stable;

[0030] In this embodiment, the glue is a water-based adhesive with a viscosity of 5000cps~10000cps. The glue application tool 3 is a glue application brush, a glue application roller or an atomizing glue application nozzle. The glue application tool is distributed on one side or both sides of the ribbon lead-out tooling to apply glue to the ribbon to ensure that the glue is applied evenly to the ribbon. In addition, the thickness of the ribbon is 0.3~0.5mm, the width is 4~6mm, and the thickness of the glue application does not exceed 0.1mm.

[0031] The drying device 4 adopts a hot air oven, and the drying temperature is 60℃~80℃, which can be adjusted flexibly. The traction speed of the traction device 6 is 0.5m / s~1m / s. The temperature of the drying device 4 is adjusted to adapt to the traction speed of the cable, so that the glue on the ribbon is dried before cutting to avoid mutual adhesion after cutting;

[0032] Cutting: As the cable continues to move forward, the hard streamer in a closed-loop structure is cut by a thermal cutting tool 5 to form two independent streamers to obtain a hard streamer cable. In this embodiment, the length of the streamer after cutting is 15 cm to 25 cm. The length of a single streamer after cutting can be adjusted by adjusting the distance between the streamer lead-out tooling and the cable axis.

[0033] In addition, the temperature of the thermal cutting tool is not less than 250°C, ensuring that the ribbon is thermally melted when the thermal cutting tool contacts the ribbon, and the cut end of the ribbon is thermally sealed to avoid loosening of the ribbon end and improve structural stability;

[0034] like Figure 1 As shown, finally, the hard streamer cable is introduced into the take-up frame 7 through the traction device 6 for winding and taking up. The production process is continuous, which greatly improves the production efficiency and ensures the consistency of the product.

[0035] In summary, the hard streamer cable and its production process pointed out in the present invention can be produced automatically through an assembly line with high efficiency. The stiffness of the streamer is increased by glue. Compared with flexible streamers, it has better suppression effect on vortex-induced vibration, which is beneficial to increase the diving depth and service life. It can avoid entanglement between the streamers when the streamer cable is retracted and released, and does not affect the multi-layer cable arrangement on the winch.

[0036] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A production process for a rigid streamer cable, characterized in that: The following steps are involved: Preparation: Place the cable on the pay-off rack, pass one end of the cable through the braiding machine and the traction equipment in turn, put the rolled yarn and ribbon on the spindle of the braiding machine, adjust the position of the ribbon lead-out tooling on the braiding machine, and ensure that the length of the ribbon after subsequent braiding meets the design requirements; Weaving: Turn on the traction equipment and braiding machine to pull the cable, and mix the yarn and ribbon on the cable surface, so that the ribbons are hung into the ribbon lead-out tooling at intervals, and move forward with the cable in a closed loop structure. Adjust the pitch of the braiding machine so that the ribbons are positioned on the cable according to the required spacing; Gluing: Use glue-coating tools to glue the ribbons hung in the ribbon lead-out tooling, so that the surface of the ribbons is covered with glue for shaping, and use drying equipment to heat the ribbons to accelerate the curing of the glue to obtain hard ribbons; Cutting: As the cable continues to move forward, a thermal cutting tool is used to cut the hard ribbon in a closed loop structure to form two independent ribbons to obtain a hard ribbon cable, which is then introduced into a take-up frame for winding and take-up.

2. The production process of the hard streamer cable according to claim 1, characterized in that: Armored steel wires are arranged on the surface of the cable, and a power line is arranged in the cable.

3. The production process of the hard streamer cable according to claim 2, characterized in that: An optical fiber is arranged in the cable.

4. The production process of the hard streamer cable according to claim 1, characterized in that: The arrangement spacing of the streamers in the length direction of the cable is 15mm~30mm, and the streamers extend simultaneously on two opposite sides of the same cross-section of the cable.

5. The production process of the hard streamer cable according to claim 1, characterized in that: The drying equipment adopts a hot air oven with a drying temperature of 60°C~80°C. The traction speed of the traction equipment is 0.5m / s~1m / s. The temperature of the drying equipment is adjusted to adapt to the traction speed of the cable so that the glue on the ribbon is dried before cutting to avoid mutual adhesion after cutting.

6. The production process of the hard streamer cable according to claim 1, characterized in that: The temperature of the thermal cutting tool is not lower than 250° C., so as to ensure that the ribbon is thermally melted when the thermal cutting tool contacts the ribbon.

7. The production process of the hard streamer cable according to claim 1, characterized in that: The glue is a water-based adhesive with a viscosity of 5000cps-10000cps. The gluing tool is a gluing brush, a gluing roller or an atomizing gluing nozzle. The gluing tool is distributed on one side or both sides of the ribbon lead-out tooling to glue the ribbon.

8. The production process of the hard streamer cable according to claim 1, characterized in that: The yarn is made of polyester yarn, and the streamer is made of polyester streamer.

9. The production process of the hard streamer cable according to claim 1, characterized in that: The thickness of the streamer is 0.3-0.5 mm, the width is 4-6 mm, the coating thickness of the glue does not exceed 0.1 mm, and the length of the streamer after cutting is 15 cm-25 cm.

10. A rigid streamer cable, characterized in that: It is produced by the production process of the hard streamer cable described in any one of claims 1 to 9.

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