Optical fiber signal transmission cable for seismic exploration

Abstract

The utility model relates to seismic exploration equipment technical field especially relates to a kind of optical fiber signal transmission gun cable for seismic exploration, including high-pressure plastic composite hose;Power cord, twisted pair shield signal line and optical fiber bundle tube are wrapped around cable outside high-pressure plastic composite hose, and power cord, twisted pair shield signal line and optical fiber bundle tube jointly constitute cable core structure;Cable core structure is wrapped around outer layer non-woven fabric outside, outer layer non-woven fabric is extruded and packed polyurethane inner sheath, and polyurethane inner sheath is wrapped around armour layer outside, and armour layer is extruded and packed macromolecular polyethylene sheath.The utility model is designed by high-pressure plastic composite hose through kevlar aramid and polyester fiber double-layer reinforcing layer, significantly improves the strength and burst pressure of central air pipe, can better adapt to complex operation environment;Cable core structure uses composite optical fiber analog signal transmission instead of traditional digital signal gun cable, improves the quality and efficiency of signal transmission;Armour layer uses double-layer steel wire armoring structure, improves the overall mechanical strength and tensile property of cable.

Description

Technical Field

[0001] This utility model relates to the field of seismic exploration equipment technology, and in particular to a fiber optic signal transmission cable for seismic exploration. Background Technology

[0002] In seismic exploration operations, the shot cable, as a key component connecting the seismic source and the data acquisition system, directly affects the accuracy and reliability of the exploration data. Traditional shot cables have many problems, such as the central air tube being easily damaged and having a short service life, leading to frequent failures in complex exploration environments and affecting the exploration progress. At the same time, traditional digital signal shot cables have certain limitations in signal transmission, making it difficult to meet the growing demand for high-precision seismic acquisition. Furthermore, existing shot cables lack adequate protective structures, failing to adapt well to harsh operating environments and causing damage to internal power lines, signal lines, and optical fibers, thus affecting signal transmission quality. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a fiber optic signal transmission cable for seismic exploration. This utility model adopts the following technical solution:

[0004] This utility model provides a fiber optic signal transmission gun cable for seismic exploration, including a high-pressure plastic composite hose, wherein the high-pressure plastic composite hose is located at the center of the gun cable;

[0005] The high-pressure plastic composite hose is wrapped with a power line, a twisted-pair shielded signal line, and an optical fiber bundle. The high-pressure plastic composite hose, the power line, the twisted-pair shielded signal line, and the optical fiber bundle together constitute the cable core structure.

[0006] The cable core structure is wrapped with an outer non-woven fabric, the outer non-woven fabric is extruded with a polyurethane inner sheath, the polyurethane inner sheath is wrapped with an armor layer, and the armor layer is extruded with a high-molecular-weight polyethylene sheath.

[0007] Preferably, the high-pressure plastic composite hose is mainly composed of a nylon tube, a Kevlar aramid braided reinforcement layer, a polyurethane sheath, and a polyester fiber braided reinforcement layer.

[0008] Preferably, the high-pressure plastic composite hose is wrapped with an inner layer of non-woven fabric.

[0009] Preferably, the high-pressure plastic composite hose is wrapped with 26 power lines, 12 twisted-pair shielded signal lines, and 2 optical fiber bundles.

[0010] Preferably, the power cord is mainly composed of tin-plated copper conductors and HDPE insulation layer.

[0011] Preferably, the twisted-pair shielded signal cable includes two signal wires twisted together, and the two signal wires are wrapped around an aluminum-plastic composite film shielding layer after being twisted together. A tin-plated grounding wire is attached inside the aluminum-plastic composite film shielding layer.

[0012] Preferably, the signal line is mainly composed of tin-plated copper conductors and HDPE insulation layer.

[0013] Preferably, the optical fiber bundle tube mainly consists of 4-core multimode optical fiber, optical fiber filler paste, and outer sheath steel tube; the outer sheath steel tube is externally extruded with an HDPE sheath.

[0014] Preferably, the armor layer is a multi-layer stranded steel wire structure, and the steel wire of the armor layer is high carbon steel wire, which is externally extruded with an HDPE sheath.

[0015] Preferably, the armor layer consists of two layers of twisted steel wire; the inner layer of the armor layer has 62 steel wires and the outer layer has 68 steel wires, with the inner and outer layers twisted in opposite directions, the inner layer twisting to the right and the outer layer twisting to the left, and the wrapping pitch of the two layers of steel wire armor being 6.5 to 8.5 times the outer diameter of the steel wire armor.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] (1) The high-pressure plastic composite hose is used as the central structure, which improves the overall pressure resistance and service life. In particular, the double-layer reinforcement design of Kevlar aramid and polyester fiber significantly improves the strength and burst pressure of the central air tube, and can better adapt to complex working environments.

[0018] (2) The use of composite optical fiber analog signal transmission instead of traditional digital signal gun cable improves the quality and efficiency of signal transmission and meets the requirements of high-precision seismic acquisition; the optical fiber bundle tube adopts 316 stainless steel tube protection design, which effectively improves the optical fiber's resistance to mechanical damage and corrosion in complex environments.

[0019] (3) The armor layer adopts a multi-layer steel wire armor structure, steel wire + HDPE sheath structure, which better protects the steel wire and improves the overall mechanical strength and tensile performance of the cable. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a cross-sectional structural diagram of the optical fiber signal transmission cable for seismic exploration according to this utility model;

[0022] Figure 2 This is a cross-sectional view of the high-pressure plastic composite hose of this utility model;

[0023] Figure 3This is a cross-sectional view of the optical fiber bundle tube of this utility model;

[0024] Figure 4 This is a cross-sectional view of the twisted-pair shielded signal cable of this utility model;

[0025] Figure 5 This is a schematic diagram of the twisting of the armor layer of this utility model.

[0026] Explanation of reference numerals in the attached diagram: 1. High-pressure plastic composite hose; 101. Nylon tube; 102. Kevlar aramid braided reinforcement layer; 103. Polyurethane sheath; 104. Polyester fiber braided reinforcement layer; 2. Inner non-woven fabric; 3. Power cord; 4. Twisted pair shielded signal cable; 401. Signal cable body; 402. Aluminum-plastic composite film shielding layer; 403. Tin-plated grounding wire; 5. Fiber optic bundle tube; 501. Multimode fiber; 502. Fiber optic filler paste; 503. Outer steel tube; 6. Outer non-woven fabric; 7. Polyurethane inner sheath; 8. Armor layer; 9. Polyethylene sheath. Detailed Implementation

[0027] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 4 As shown, this embodiment discloses a fiber optic signal transmission cable for seismic exploration, which consists of, from the inside out, a high-pressure plastic composite hose 1, a cable core structure, an outer non-woven fabric 6, a polyurethane inner sheath 7, an armor layer 8, and a high-molecular-weight polyethylene sheath 9.

[0029] The high-pressure plastic composite hose 1 is located at the center of the cable. The high-pressure plastic composite hose 1 is surrounded by a power line 3, a twisted-pair shielded signal line 4, and an optical fiber bundle 5. The power line 3, the twisted-pair shielded signal line 4, and the optical fiber bundle 5 together constitute the cable core structure, realizing an integrated design for power transmission, signal transmission, and optical signal transmission. The cable core structure is further surrounded by an outer non-woven fabric 6, which is then extruded with a polyurethane inner sheath 7. The polyurethane inner sheath 7 is then surrounded by an armor layer 8, and the armor layer 8 is then extruded with a high-molecular-weight polyethylene sheath 9. The high-molecular-weight polyethylene sheath 9 has excellent heat distortion resistance, abrasion resistance, and chemical resistance.

[0030] In this embodiment, the high-pressure plastic composite hose 1 mainly consists of a nylon tube 101, a Kevlar-aramid braided reinforcement layer 102, a polyurethane sheath 103, and a polyester fiber braided reinforcement layer 104. The nylon tube, Kevlar-aramid braided reinforcement layer, polyurethane sheath, and polyester fiber braided reinforcement layer are arranged sequentially from the inside out. The design of the double-layer reinforcement of Kevlar-aramid braid and polyester fiber braid significantly improves the tensile strength and pressure resistance of the hose.

[0031] In this embodiment, the high-pressure plastic composite hose 1 is wrapped with an inner non-woven fabric 2, and the cable core structure is wrapped on the inner non-woven fabric 2.

[0032] In this embodiment, the high-pressure plastic composite hose 1 is wrapped with 26 power lines 3, 12 twisted-pair shielded signal lines 4 and 2 optical fiber bundles 5.

[0033] The power cord 3 is mainly composed of tin-plated copper conductors and HDPE insulation layer.

[0034] The twisted-pair shielded signal cable 4 includes two signal wires 401 twisted together. Signal wire 401 is mainly composed of tin-plated copper conductors and an HDPE insulation layer. After twisting, the two signal wires 401 are wrapped around an aluminum-plastic composite film shielding layer 402. A tin-plated grounding wire 403 is attached inside the aluminum-plastic composite film shielding layer 402. The purpose of the tin-plated grounding wire 403 is to ensure the continuity of the shielding of the aluminum-plastic composite film shielding layer 402, and it can also serve as a grounding lead (reliable grounding).

[0035] The fiber optic bundle 5 mainly consists of a 4-core multimode fiber 501, fiber optic filler 502, and an outer sheath steel tube 503; the outer sheath steel tube 503 is externally extruded with an HDPE sheath. The outer sheath steel tube 503 can be a 316 stainless steel tube. The outer sheath steel tube 503 effectively protects the optical fiber from mechanical damage and environmental corrosion.

[0036] It should be noted that the HDPE sheath is a protective sleeve made of HDPE material, which is high-density polyethylene.

[0037] The armor layer 8 is a multi-layer stranded steel wire structure. The steel wires of the armor layer 8 are made of high carbon steel wire, and the high carbon steel wire is extruded with an HDPE sheath.

[0038] In this embodiment, the armor layer 8 consists of two layers of twisted steel wires. The inner layer has 62 wires, and the outer layer has 68 wires. The twisting directions of the inner and outer layers are opposite (in this embodiment, the inner layer is twisted to the right, and the outer layer is twisted to the left). The wrapping pitch of the two layers of steel wire armor is 6.5 to 8.5 times the outer diameter of the steel wire armor. This double-layer opposite-direction twisting design significantly improves the overall mechanical strength and tensile strength of the cable. Figure 5 As shown, the diameter of a single steel wire is 1.3- 1.8mm (typical specification, actual production is 1.4mm), stranding pitch h / stretching outer diameter D = 6.5-8.5 times. Stranding pitch is the axial length of one revolution of a single wire.

[0039] The beneficial technical effects of this utility model are as follows:

[0040] The design of the high-pressure plastic composite hose, combined with a double-layer reinforcement of Kevlar aramid and polyester fiber, significantly improves the cable's compressive strength and service life. Composite optical fiber analog signal transmission replaces traditional digital signal cables, achieving a technological breakthrough. The steel tube sheath design effectively protects the optical fiber and adapts to complex environmental conditions. The double-layer steel wire armor structure provides excellent mechanical strength and tensile properties. Special stranding parameter design further enhances the overall performance of the cable. The application of the HDPE sheath enhances the cable's durability and stability. The main innovations are as follows:

[0041] (1) The high-pressure plastic composite hose is used as the central structure, which improves the overall pressure resistance and service life. In particular, the double-layer reinforcement design of Kevlar aramid and polyester fiber significantly improves the strength and burst pressure of the central air tube, and can better adapt to complex working environments.

[0042] (2) The use of composite optical fiber analog signal transmission instead of traditional digital signal gun cable improves the quality and efficiency of signal transmission, meets the requirements of high-precision seismic acquisition, and achieves great technological progress; the optical fiber bundle tube adopts 316 stainless steel tube protection design, which effectively improves the optical fiber's resistance to mechanical damage and corrosion in complex environments.

[0043] (3) The double-layer steel wire armor adopts a steel wire + HDPE sheath structure, which better protects the steel wire and improves the overall mechanical strength and tensile strength of the cable; the HDPE small sheath covering the outside of the steel wire is bonded together, which enhances the strength of the sheath and the stability of the steel wire armor, effectively protecting the internal cable.

[0044] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A fiber optic signal transmission cable for seismic exploration, characterized in that: Includes a high-pressure plastic composite hose (1), which is located at the center of the gun cable; The high-pressure plastic composite hose (1) is wrapped with a power line (3), a twisted pair shielded signal line (4) and an optical fiber bundle (5). The high-pressure plastic composite hose (1), the power line (3), the twisted-pair shielded signal line (4), and the optical fiber bundle tube (5) together constitute the cable core structure. The cable core structure is wrapped with an outer non-woven fabric (6), the outer non-woven fabric (6) is extruded with a polyurethane inner sheath (7), the polyurethane inner sheath (7) is wrapped with an armor layer (8), and the armor layer (8) is extruded with a high molecular weight polyethylene sheath (9).

2. The optical fiber signal transmission cable for seismic exploration according to claim 1, characterized in that: The high-pressure plastic composite hose (1) is mainly composed of nylon tube (101), Kevlar aramid braided reinforcement layer (102), polyurethane sheath (103), and polyester fiber braided reinforcement layer (104).

3. The optical fiber signal transmission cable for seismic exploration according to claim 1, characterized in that: The high-pressure plastic composite hose (1) is wrapped with an inner non-woven fabric (2).

4. The optical fiber signal transmission cable for seismic exploration according to claim 1, characterized in that: The high-pressure plastic composite hose (1) is wrapped with 26 power lines (3), 12 twisted-pair shielded signal lines (4) and 2 optical fiber bundles (5).

5. The optical fiber signal transmission cable for seismic exploration according to claim 1, characterized in that: The power cord (3) is mainly composed of tin-plated copper conductor and HDPE insulation layer.

6. The optical fiber signal transmission cable for seismic exploration according to claim 1, characterized in that: The twisted-pair shielded signal line (4) includes two signal lines (401) twisted together. After the two signal lines (401) are twisted together, they are wrapped with an aluminum-plastic composite film shielding layer (402). A tin-plated grounding wire (403) is attached inside the aluminum-plastic composite film shielding layer (402).

7. The optical fiber signal transmission cable for seismic exploration according to claim 6, characterized in that: The signal line (401) is mainly composed of tin-plated copper conductors and HDPE insulation layer.

8. The optical fiber signal transmission cable for seismic exploration according to claim 1, characterized in that: The fiber bundle tube (5) is mainly composed of a 4-core multimode fiber (501), fiber filler paste (502), and an outer steel tube (503); the outer steel tube (503) is externally extruded with an HDPE sheath.

9. The optical fiber signal transmission cable for seismic exploration according to claim 1, characterized in that: The armor layer (8) is a multi-layer stranded steel wire structure. The steel wire of the armor layer (8) is high carbon steel wire, and the high carbon steel wire is extruded with an HDPE sheath.

10. The optical fiber signal transmission cable for seismic exploration according to claim 9, characterized in that: The armor layer (8) consists of two layers of twisted steel wire; The inner layer of the armor layer (8) has 62 steel wires and the outer layer has 68 steel wires. The inner and outer steel wires are twisted in opposite directions. The wrapping pitch of the two layers of steel wire armor is 6.5 to 8.5 times the outer diameter of the steel wire armor.

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