Gun control deck cable for connecting seismic source control system and seismic source gun and manufacturing method

Abstract

The invention relates to a gun control deck cable for connecting a seismic source control system and a seismic source gun and a manufacturing method, and belongs to the technical field of cables for seismic exploration. According to the technical scheme, a first tinned copper conductor is externally extruded with a first TPEE insulating material to form an insulating wire core, and is extruded with a polyethylene sheath; a plurality of aramid fiber tows are synthesized into aramid fiber and the aramid fiber is wrapped outside the polyethylene sheath; a non-woven fabric I is wrapped outside the tensile layer, and an HDPE sheath is extruded outside the non-woven fabric I by using an extruder; a TPEE insulating material II is uniformly extruded on the surface of a copper conductor, then a PE small sheath is extruded in a twisted-pair manner to form a communication line, a non-woven fabric II is lapped outside a communication line layer, and a polyurethane sheath is extruded outside the non-woven fabric II. The tensile strength of the cable is improved, the reliability of the cable is improved, and the service life is prolonged; and the cable has good chemical corrosion resistance, wear resistance and friction damage resistance, can adapt to severe ocean, land and other seismic exploration operation environments, and ensures that the cable can stably work for a long time in a complex environment.

Description

Technical Field

[0001] The present invention relates to a gun control deck cable connecting a seismic source control system and a seismic source gun and a manufacturing method thereof, belonging to the technical field of cables for seismic exploration. Background Art

[0002] Among the advanced technical means for modern research and development of the ocean, marine physical exploration technology is of extremely great significance. The marine seismic exploration streamer system can be divided into two parts: on-board equipment and offshore equipment. The on-board equipment includes a navigation system, a seismic source control system, a hydrophone control system, a streamer power supply system, a main data acquisition control system, a data real-time storage and display system, etc. The offshore equipment includes a seismic source, hydrophones, and streamers, etc. Among them, the seismic source uses a seismic source gun to simulate an artificial seismic source to generate seismic waves. The seismic source gun is connected to the on-board seismic source control system through a gun control deck cable. In seismic exploration operations, the gun control deck cable is a key component connecting the seismic source control system and the seismic source gun, and its performance directly affects the accuracy of seismic exploration data and the operation efficiency. The existing gun control deck cables (including Chinese patent applications 201711430770.X, 201711430758.9, etc.) have many deficiencies in terms of signal transmission, mechanical strength, and anti-environmental interference. For example, the transmitted signal is easily affected by electromagnetic interference, resulting in data loss or errors; in a complex operating environment, the cable is easily damaged due to mechanical stress, affecting its service life; and in a harsh marine or land environment, the protection performance is poor, making it difficult to ensure long-term stable operation. Summary of the Invention

[0003] The object of the present invention is to provide a gun control deck cable connecting a seismic source control system and a seismic source gun and a manufacturing method thereof, to improve the tensile strength of the cable, improve the reliability and service life of the cable; improve the accuracy of data transmission, have good chemical corrosion resistance, wear resistance, and anti-friction damage ability, and be able to adapt to harsh marine, land, and other seismic exploration operating environments, ensuring the long-term stable operation of the cable in a complex environment and solving the above technical problems existing in the prior art.

[0004] The technical solution of the present invention is as follows: A gun control deck cable connecting a seismic source control system and a seismic source gun, comprising a power line, a tensile layer, a communication line layer, and an outer sheath arranged from the inside to the outside. The power line located in the center includes a tinned copper conductor 1. The tinned copper conductor 1 is extruded with a TPEE insulating material 1 to form an insulated wire core. Four insulated wire cores are stranded to form a stranded four-core power line. A polyethylene sheath is extruded outside the stranded four-core power line using an extruder. The tensile layer includes aramid filaments. A number of aramid filaments are bundled to form aramid. The bundled aramid is wound around the polyethylene sheath as a whole to form a tensile layer. A non-woven fabric 1 is wound around the tensile layer. An HDPE sheath is extruded outside the non-woven fabric 1 using an extruder. The communication line layer includes copper conductors. The copper conductors are evenly extruded with a TPEE insulating material 2 and then twisted in pairs, and a PE small sheath is extruded to form communication lines. A number of communication lines are wound around the HDPE sheath to form a communication line layer. A non-woven fabric 2 is wound around the communication line layer. A polyurethane sheath is extruded outside the non-woven fabric 2 to form an outer sheath. A number of ridges are formed on the outer surface of the polyurethane sheath.

[0005] The copper conductors of the communication line layer are two types of conductors, namely a silver-plated copper conductor and a tinned copper conductor 2. The silver-plated copper conductor has a higher conductivity than the tinned copper conductor 2, which can further improve the signal transmission quality. The silver-plated copper conductor and the tinned copper conductor 2 are both extruded with a TPEE insulating material 2 to ensure the electrical insulation performance of the communication line.

[0006] A manufacturing method of a gun control deck cable connecting a seismic source control system and a seismic source gun. An insulated wire core is formed by extruding a TPEE insulating material 1 outside a tinned copper conductor 1. Four insulated wire cores are stranded to form a stranded four-core power line, and the four-core power line is located in the center. A polyethylene sheath is extruded outside the stranded four-core power line using an extruder. A number of aramid filaments are bundled to form aramid. The bundled aramid is wound around the polyethylene sheath as a whole to form a tensile layer. A non-woven fabric 1 is wound around the tensile layer. An HDPE sheath is extruded outside the non-woven fabric 1 using an extruder. The copper conductors are evenly extruded with a TPEE insulating material 2 and then twisted in pairs, and a PE small sheath is extruded to form communication lines. A number of communication lines are wound around the HDPE sheath and a non-woven fabric 2 is wound around them. A polyurethane sheath is extruded outside the non-woven fabric 2.

[0007] A number of ridges are formed on the outer surface of the polyurethane sheath through a mold. The design of the ridges increases the friction during the cable operation. At the same time, during the cable laying and use process, it can reduce the damage to the sheath surface caused by friction and improve the service life of the cable.

[0008] The power cord is a four-core stranded power cord located at the center of the cable core. The conductor of each power cord uses a tinned copper conductor one, which has good electrical conductivity and corrosion resistance. Outside the tinned copper conductor one, a TPEE (thermoplastic polyester elastomer) insulating material one is extruded. The TPEE insulating material has excellent flexibility, abrasion resistance, and electrical insulation performance, which can effectively protect the conductor and reduce the transmission loss of electrical signals. A polyethylene sheath is extruded outside the overall four-core stranded power cord, which further enhances the integrity and protection of the cable core. The copper conductors of the communication line layer are two types of conductors, namely silver-plated copper conductors and tinned copper conductors two. The silver-plated copper conductors have a higher conductivity than the tinned copper conductors two, which can further improve the signal transmission quality. TPEE insulating material two is extruded outside both the silver-plated copper conductors and the tinned copper conductors two to ensure the electrical insulation performance of the communication line. The paired silver-plated copper conductors or tinned copper conductors two are stranded, and after stranding, a PE (polyethylene) small sheath is extruded to form the communication line. The PE small sheath isolates and protects the communication line, preventing it from being damaged by external mechanical forces.

[0009] The tensile layer is formed by winding a tensile element Kevlar aramid around the polyethylene sheath. Several aramid filaments are bundled together to form a high-strength tensile structure, which can effectively withstand the tensile force exerted on the cable during operation. Several bundled aramids are wound around the polyethylene sheath, and its overall breaking force ≥ 2 kN. To protect the aramid filaments and enhance their integrity, non-woven fabric two is wound around the overall wound and stranded aramids. The non-woven fabric two can prevent the aramid filaments from being damaged by friction and at the same time increase the adhesion to the subsequent sheath.

[0010] The outer sheath is formed by extruding a polyurethane sheath outside the non-woven fabric two. The polyurethane sheath can not only further protect the aramid filaments but also has good chemical corrosion resistance and mechanical properties. The polyurethane sheath has good abrasion resistance, oil resistance, and flexibility, which can effectively protect the internal structure from the influence of the external harsh environment. At the same time, several ridges are provided on the surface of the polyurethane sheath. The design of the ridges increases the friction during the operation of the cable. At the same time, during the laying and use of the cable, it can reduce the damage caused by friction on the sheath surface and improve the service life of the cable.

[0011] The beneficial effects of the present invention: 1. Enhance the aramid tensile structure: By using Kevlar aramid with a breaking force ≥ 2 kN as the tensile element and combining with a multi-layer protection structure, the tensile strength of the cable is greatly improved, enabling it to adapt to the tensile stress in complex operating environments, reducing the risk of cable damage due to stretching, and improving the reliability and service life of the cable; 2. Hierarchical and stable signal transmission: The tin-plated copper conductor and silver-plated copper conductor are designed in groups, and hierarchical transmission is carried out for different signal types (such as control signals and data signals) to reduce high-frequency signal attenuation. The protection of TPEE insulation and PE small sheath ensures the stability and efficiency of signal transmission. The high conductivity of the silver-plated copper conductor can effectively reduce signal transmission loss, improve the accuracy of data transmission, and meet the requirements of seismic exploration for high-precision signal transmission; 3. Multi-layer protection structure: The multi-layer protection structure from the inside to the outside, including polyethylene sheath, HDPE sheath, polyurethane sheath and the ridge design on the sheath surface, enables the cable to have good chemical corrosion resistance, wear resistance and anti-friction damage ability, and can adapt to harsh seismic exploration operation environments such as the ocean and land, ensuring the long-term stable operation of the cable in complex environments. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of an embodiment of the present invention; In the figure: tin-plated copper conductor 1, TPEE insulating material 2, polyethylene sheath 3, aramid fiber 4, non-woven fabric 1 5, HDPE sheath 6, copper conductor 7, TPEE insulating material 2 8, PE small sheath 9, non-woven fabric 2 10, polyurethane sheath 11, ridge 12. Detailed Embodiment

[0013] The present invention will be further described below with reference to the drawings through embodiments.

[0014] A gun control deck cable connecting a seismic source control system and a seismic source gun includes a power line, a tensile layer, a communication line layer and an outer sheath arranged from the inside to the outside. The power line located in the center includes a tin-plated copper conductor 1. A TPEE insulating material 2 is extruded outside the tin-plated copper conductor 1 to form an insulated wire core. Four insulated wire cores are stranded to form a stranded four-core power line; a polyethylene sheath 3 is extruded outside the stranded four-core power line using an extruder; the tensile layer includes aramid fibers 4. A plurality of aramid fibers 4 are bundled to form aramid, and the bundled aramid is wound around the polyethylene sheath 3 as a whole to form a tensile layer; a non-woven fabric 1 5 is wound around the tensile layer, and an HDPE sheath 6 is extruded outside the non-woven fabric 1 5 using an extruder; the communication line layer includes a copper conductor 7. After TPEE insulating material 2 is evenly extruded on the surface of the copper conductor 7, it is twisted, and a PE small sheath 9 is extruded to form a communication line. A plurality of communication lines are wound around the HDPE sheath 6 to form a communication line layer; a non-woven fabric 2 10 is wound around the communication line layer, and a polyurethane sheath 11 is extruded outside the non-woven fabric 2 10 to form an outer sheath; a plurality of ridges 12 are formed on the outer surface of the polyurethane sheath 11.

[0015] The copper conductors 7 of the communication line layer are two types of conductors, namely silver-plated copper conductors and tin-plated copper conductors II. The silver-plated copper conductors have a higher conductivity than the tin-plated copper conductors II, which can further improve the signal transmission quality. TPEE insulating material II 8 is extruded around both the silver-plated copper conductors and the tin-plated copper conductors II to ensure the electrical insulation performance of the communication line. A manufacturing method of a gun control deck cable connecting a seismic source control system and a seismic source gun. An insulated wire core is formed by extruding TPEE insulating material I 2 around a tin-plated copper conductor I 1. Four insulated wire cores are stranded to form a stranded four-core power line, and the four-core power line is located in the center. A polyethylene sheath 3 is extruded around the stranded four-core power line using an extruder. A number of aramid filaments 4 are bundled to form aramid, and the bundled aramid is wound around the polyethylene sheath 3 as a whole to form a tensile layer. A non-woven fabric I 5 is wound around the tensile layer, and an HDPE sheath 6 is extruded around the non-woven fabric I 5 using an extruder. TPEE insulating material II 8 is evenly extruded on the surface of the copper conductor 7 and then double-stranded, and a PE small sheath 9 is extruded to form a communication line. A plurality of communication lines are wound around the HDPE sheath 6 and a non-woven fabric II 10 is wound. A polyurethane sheath 11 is extruded around the non-woven fabric II 10.

[0016] A number of ridges 12 are formed on the outer surface of the polyurethane sheath 11 through a mold. The design of the ridges increases the friction during the cable operation. At the same time, during the cable laying and use process, the damage to the sheath surface caused by friction can be reduced, and the service life of the cable can be improved.

[0017] The power line is a four-core stranded power line located in the center of the cable core. The conductor of each power line uses a tin-plated copper conductor I 1 because of its good electrical conductivity and corrosion resistance. TPEE (thermoplastic polyester elastomer) insulating material I is extruded around the tin-plated copper conductor. The TPEE insulating material has excellent flexibility, wear resistance and electrical insulation performance, which can effectively protect the conductor and reduce the transmission loss of electrical signals. A layer of polyethylene sheath 3 is extruded around the whole four-core stranded power line, and the polyethylene sheath 3 further enhances the integrity and protection of the cable core. The copper conductors 7 of the communication line layer are two types of conductors, namely silver-plated copper conductors and tin-plated copper conductors II. The silver-plated copper conductors have a higher conductivity than the tin-plated copper conductors II, which can further improve the signal transmission quality. TPEE insulating material II 8 is extruded around both the silver-plated copper conductors and the tin-plated copper conductors II to ensure the electrical insulation performance of the communication line. The paired silver-plated copper conductors or tin-plated copper conductors II are stranded, and a PE (polyethylene) small sheath is extruded after stranding to form a communication line. The PE small sheath plays a role in isolating and protecting the communication line to prevent it from being damaged by external mechanical forces.

[0018] In the embodiment, there are 12 communication lines stranded by the copper conductor 7, among which 6 use tin-plated copper conductors II and the other 6 use silver-plated copper conductors.

[0019] The tensile layer is formed by winding a tensile element, Kevlar aramid, around the polyethylene sheath 3. Several aramid filaments 4 are bundled together to form a high-strength tensile structure, which can effectively withstand the tensile force exerted on the cable during operation. The bundled aramid is wound around the polyethylene sheath 3, and its overall breaking force is ≥2 kN. To protect the aramid filaments and enhance their integrity, a non-woven fabric two 10 is wound around the bundled and stranded aramid. The non-woven fabric two 10 can prevent the aramid filaments from being damaged by friction and at the same time increase the adhesion to the subsequent sheath.

[0020] The outer sheath is formed by extrusion of a polyurethane sheath 11 around the non-woven fabric two 10. The polyurethane sheath 11 can not only further protect the aramid filaments but also has good chemical corrosion resistance and mechanical properties. The polyurethane sheath 11 has good abrasion resistance, oil resistance and flexibility, which can effectively protect the internal structure from the influence of the external harsh environment. At the same time, a number of ridges 12 are provided on the surface of the polyurethane sheath. The design of the ridges increases the friction during the operation of the cable. At the same time, during the laying and use of the cable, the damage caused by friction on the sheath surface can be reduced, and the service life of the cable can be improved.

Claims

1. A gun control deck cable connecting a seismic source control system and a seismic source gun, characterized in that: It includes a power cord, a tensile layer, a communication wire layer, and an outer sheath arranged from the inside to the outside. The power cord located in the center includes a tinned copper conductor 1 (1), and a TPEE insulating material 1 (2) is extruded outside the tinned copper conductor 1 (1) to form an insulated wire core. Four insulated wire cores are stranded to form a stranded four-core power cord; a polyethylene sheath (3) is extruded outside the stranded four-core power cord using an extruder; the tensile layer includes aramid fibers (4), and several aramid fibers (4) are bundled to form aramid, and the whole of several bundled aramids is wrapped around the polyethylene sheath (3) to form a tensile layer; a non-woven fabric 1 (5) is wrapped around the tensile layer, and an HDPE sheath (6) is extruded outside the non-woven fabric 1 (5) using an extruder; the communication wire layer includes a copper conductor (7), and a TPEE insulating material 2 (8) is evenly extruded on the surface of the copper conductor (7) and then twisted, and a PE small sheath (9) is extruded to form a communication wire, and multiple communication wires are wrapped around the HDPE sheath (6) to form a communication wire layer; a non-woven fabric 2 (10) is wrapped around the communication wire layer, and a polyurethane sheath (11) is extruded outside the non-woven fabric 2 (10) to form an outer sheath; several ridges (12) are formed on the outer surface of the polyurethane sheath (11).

2. The gun control deck cable connecting the seismic source control system and the seismic source gun according to claim 1, characterized in that: The copper conductor (7) of the communication wire layer is two kinds of conductors, namely a silver-plated copper conductor and a tinned copper conductor 2; a TPEE insulating material 2 (8) is extruded outside both the silver-plated copper conductor and the tinned copper conductor 2.

3. A manufacturing method of a gun control deck cable connecting a seismic source control system and a seismic source gun, characterized in that: An insulated wire core is formed by extruding a TPEE insulating material 1 (2) outside the tinned copper conductor 1 (1). Four insulated wire cores are stranded to form a stranded four-core power cord, and the four-core power cord is located in the center; a polyethylene sheath (3) is extruded outside the stranded four-core power cord using an extruder; aramid is formed by bundling several aramid fibers (4), and the whole of several bundled aramids is wrapped around the polyethylene sheath (3) to form a tensile layer; a non-woven fabric 1 (5) is wrapped around the tensile layer, and an HDPE sheath (6) is extruded outside the non-woven fabric 1 (5) using an extruder; a TPEE insulating material 2 (8) is evenly extruded on the surface of the copper conductor (7) and then twisted, and a PE small sheath (9) is extruded to form a communication wire. Multiple communication wires are wrapped around the HDPE sheath (6) and a non-woven fabric 2 (10) is wrapped; a polyurethane sheath (11) is extruded outside the non-woven fabric 2 (10).

4. A manufacturing method of a gun control deck cable connecting a seismic source control system and a seismic source gun, characterized in that: Several ridges (12) are formed on the outer surface of the polyurethane sheath (11) through a mold.

5. A manufacturing method of a gun control deck cable connecting a seismic source control system and a seismic source gun, as claimed in claim 3 or 4, characterized in that: The copper conductor (7) of the communication wire layer is two kinds of conductors, namely a silver-plated copper conductor and a tinned copper conductor 2; a TPEE insulating material 2 (8) is extruded outside both the silver-plated copper conductor and the tinned copper conductor 2; paired silver-plated copper conductors or tinned copper conductors 2 are twisted, and a PE small sheath (9) is extruded outside after twisting to form a communication wire.

6. The manufacturing method of a gun control deck cable connecting a seismic source control system and a seismic source gun according to claim 3 or 4, characterized in that: The tensile layer is a Kevlar aramid, a tensile element, wrapped around the polyethylene sheath (3).

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