High-temperature oil well heating cable woven by copper-bound pattern steel wires

Abstract

The utility model discloses a high-temperature oil well heating cable woven by copper-rolled steel wires, and belongs to the technical field of cables. The high-temperature oil well heating cable woven by the copper corrugated steel wires comprises at least one group of battery cells and further comprises an insulating layer fixedly arranged on the outer walls of the battery cells, and a fireproof layer fixedly arranged on the outer wall of the insulating layer; the battery cell is fixedly arranged in the metal sheath through the filling layer; according to the utility model, the polyimide film and the fire-resistant mica tape are sequentially and fixedly arranged on the outer wall of the battery cell, so that the safety and the reliability in use can be improved, and the metal sheath is fixedly arranged on the outer wall of the cable, so that the heat-conducting property can be improved, the heat dissipation efficiency of the heating cable can be improved, and the aging phenomenon can be reduced; the cable is protected from physical damage and friction and can bear large pressure, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a high-temperature oil well heating cable braided with copper corrugated steel wire. Background Technology

[0002] During oil extraction, crude oil has a high viscosity. In order to maintain the crude oil's good fluidity and allow it to flow along pipelines, heating cables are usually used to heat the crude oil, soften it, and improve its fluidity in the pipelines.

[0003] Existing oil well heating cables not only have poor heating performance during use, but are also prone to aging, leading to a rapid decline in service life and making it difficult to meet production requirements. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor heating effect and easy aging in the existing technology, and to propose a copper-woven steel wire braided high-temperature oil well heating cable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A copper-braided steel wire high-temperature oil well heating cable includes at least one set of battery cores, and further includes: an insulation layer fixedly disposed on the outer wall of the battery cores, wherein a fire-resistant layer is fixedly disposed on the outer wall of the insulation layer; and a metal sheath, wherein the battery cores are fixedly disposed inside the metal sheath through a filling layer.

[0007] To increase the heat conduction area of ​​the metal sheath, preferably, the outer wall of the metal sheath is fixedly provided with grooves, and the metal sheath is made of copper.

[0008] Furthermore, the ribs have a corrugated structure and are evenly distributed on the outer wall of the metal sheath.

[0009] To improve the strength of the cable, preferably, a braided layer is fixedly provided on the outer wall of the metal sheath, and the braided layer is made of steel wire.

[0010] To improve the insulation effect of the cable, preferably, the insulation layer is made of polyimide film, and the thickness of the insulation layer is in the range of 20 micrometers to 200 micrometers.

[0011] Furthermore, the polyimide film has at least four layers, and the overlap rate is greater than 50%.

[0012] Preferably, the refractory layer is made of refractory mica tape, and the thickness of the refractory layer ranges from 0.1 mm to 2 mm.

[0013] Preferably, the filler layer is made of polytetrafluoroethylene.

[0014] Compared with the prior art, this utility model provides a copper-braided steel wire high-temperature oil well heating cable, which has the following beneficial effects:

[0015] 1. This copper-corrugated steel wire braided high-temperature oil well heating cable has an insulation layer and a fire-resistant layer fixedly installed on the outer wall of the battery core, which can increase the safety and reliability during use. In addition, the metal sheath fixedly installed on the outer wall of the cable can not only increase the thermal conductivity and improve the heat dissipation efficiency of the heating cable, but also reduce aging, protect the cable from physical damage and friction, and withstand greater pressure, thus improving the performance.

[0016] 2. This copper-corrugated steel wire braided high-temperature oil well heating cable increases the effective surface area of ​​the metal by fixing corrugations on the outer wall of the metal sheath, thereby improving heat dissipation and promoting the heat dissipation effect of the heating cable. It can also reduce the wear of the outer coating material, protect the coating from peeling off, and thus extend its service life. Furthermore, the braided layer made of steel wire fixed on the outer wall of the metal sheath significantly improves the compressive strength of the cable, preventing deformation or damage under high pressure or heavy objects, and extending the service life of the cable.

[0017] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model increases safety and reliability during use by sequentially fixing a polyimide film and a fire-resistant mica tape on the outer wall of the battery cell. Furthermore, fixing a metal sheath on the outer wall of the cable not only increases thermal conductivity and improves the heat dissipation efficiency of the heating cable, but also reduces aging, protects the cable from physical damage and friction, and enables it to withstand greater pressure, thus improving the performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the copper-woven steel wire braided high-temperature oil well heating cable proposed in this utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the copper-woven steel wire braided high-temperature oil well heating cable proposed in this utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the copper-woven steel wire braided high-temperature oil well heating cable proposed in this utility model. Figure 3 ;

[0021] Figure 4 This is a cross-sectional view of the copper-woven steel wire braided high-temperature oil well heating cable proposed in this utility model.

[0022] In the diagram: 1. Battery cell; 2. Insulation layer; 3. Fire-resistant layer; 4. Metal sheath; 5. Braided layer; 6. Filler layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Example:

[0026] Reference Figures 1-4 The copper-braided steel wire high-temperature oil well heating cable includes at least one set of battery cores 1, preferably six sets. The six sets of battery cores 1 are equidistantly distributed circumferentially, and the battery cores 1 conform to the first or second type of circular copper conductor specified in GB / T3956, preferably the first type of solid conductor. It also includes: an insulation layer 2 fixedly installed on the outer wall of each of the six sets of battery cores 1, and a fire-resistant layer 3 fixedly installed on the outer wall of the insulation layer 2. During use, the insulation layer 2 fixedly installed on the outer wall of the battery cores 1 prevents current leakage and short circuits, reduces the risk of electric shock, effectively isolates the current in the cable from the external environment, prevents the intrusion of moisture, dust, and chemicals, and maintains the performance and stability of the heating cable. The fire-resistant layer 3 fixedly installed on the outer wall of the insulation layer 2 increases fire resistance and temperature resistance, protecting the cable from damage under extreme conditions, thereby extending the cable's lifespan. The lifespan of the cable is extended, the system reliability is improved, and the safety and reliability during use are further enhanced. The metal sheath 4 fixes the battery core 1 inside the metal sheath 4 through the filling layer 6. During use, the metal sheath 4 can protect the cable from physical damage and friction, and can withstand greater pressure, preventing the cable from being damaged by heavy objects. It can ensure the structural stability of the heating cable, prevent the internal insulation layer 2, heating elements, etc. from being deformed or damaged by the external environment. Moreover, it is not flammable and can provide additional protection in the event of a fire, reducing the risk of the cable causing a fire. The metal sheath 4 can also effectively shield electromagnetic interference, prevent external electromagnetic waves from affecting the signals inside the cable, ensure the stability of the heating cable's operation, and has good thermal conductivity, which can improve the heat dissipation efficiency of the heating cable and avoid affecting the heating effect or causing equipment damage due to overheating.

[0027] In use, by sequentially fixing the insulating layer 2 and the fire-resistant layer 3 on the outer wall of the electric core 1, the safety and reliability in use can be increased, and by fixing the metal sheath 4 on the outer wall of the cable, not only the heat conduction performance can be increased, the heat dissipation efficiency of the heating cable can be improved, but also the aging phenomenon can be reduced, the cable can be protected from physical damage and friction, and can withstand greater pressure, and the use effect is improved; by fixing the knurling on the outer wall of the metal sheath 4, the effective area of the metal surface can be increased, thereby improving the heat dissipation capacity and promoting the heat dissipation effect of the heating cable, the wear of the outer coating material can be reduced, the coating is not easy to peel off, thereby prolonging the service life, and the braided layer 5 woven by steel wire is fixed on the outer wall of the metal sheath 4, which significantly improves the compression strength of the cable, prevents deformation or damage under high pressure or heavy pressure, and prolongs the service life of the cable.

[0028] Referring to Figure 1 and Figure 2 The knurling is also called surface texture or concave-convex texture, and the structure of the knurling is in a corrugated structure, and the knurling is uniformly distributed on the outer wall of the metal sheath 4, and the material of the metal sheath 4 is copper. By fixing the knurling on the outer wall of the metal sheath 4, not only the effective area of the metal surface can be increased, thereby improving the heat dissipation capacity, but also the wear of the outer coating material of the metal sheath 4 can be reduced. The copper material not only has excellent thermal conductivity, can effectively dissipate heat from the heating cable, but also has a relatively soft texture compared to iron or steel, is easier to bend and operate in application, and is suitable for complex installation environments.

[0029] Referring to Figures 1-3 The braided layer 5 is fixed on the outer wall of the metal sheath 4, and the material of the braided layer 5 is preferably steel wire. In use, by fixing the braided layer 5 made of steel wire on the outer wall of the metal sheath 4, the compression strength of the cable can be improved, deformation or damage under high pressure or heavy pressure can be prevented, and the service life of the cable can be prolonged.

[0030] Referring to Figures 1-4 The material of the insulating layer 2 is preferably polyimide film. Polyimide is a high-performance thermoplastic material with excellent high-temperature resistance, chemical resistance and electrical insulation, and can withstand temperatures of 400 degrees Celsius and above, improving safety in use. The thickness of the insulating layer 2 ranges from 20 microns to 200 microns, and we prefer 50 microns. By selecting polyimide film as the material of the insulating layer 2, its excellent high-temperature resistance, chemical resistance and electrical insulation can improve safety and reliability in use. During use, the polyimide film is provided with at least four layers, that is, at least four layers of polyimide film are wound on the outer wall of the electric core 1, and the overlap rate of the overlap is greater than or equal to 50%, that is, half of the width, improving safety in use.

[0031] With reference to Figures 1-4 Here, the material of the fireproof layer 3 is preferably fireproof mica tape, which can withstand a temperature of 900 degrees Celsius or above, has excellent electrical insulation properties, can effectively prevent current leakage and short circuit, improves the safety of the equipment, has high chemical stability and strength, has a long service life, reduces the frequency of replacement and maintenance costs, and the thickness of the fireproof layer 3 ranges from 0.1 mm to 2 mm, and we preferably use 1 mm, which is also wound for not less than four layers to improve the use effect.

[0032] With reference to Figures 1-4 Here, the material of the filling layer 6 is preferably polytetrafluoroethylene, which is not only a material that can withstand high temperature and chemical corrosion, can usually withstand a continuous working temperature of 260 degrees Celsius, has excellent insulation effect, can maintain good insulation performance in a high-voltage and humid environment, and has strong resistance to almost all chemical substances (such as acid, alkali, solvent, etc.), is not easy to be eroded by chemical substances, and improves the service life.

[0033] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A copper-braided steel wire high-temperature oil well heating cable, comprising at least one set of battery cores (1), characterized in that, Also includes: An insulating layer (2) is fixedly disposed on the outer wall of the battery cell (1), and a fire-resistant layer (3) is fixedly disposed on the outer wall of the insulating layer (2). Metal sheath (4), the battery cell (1) is fixedly disposed inside the metal sheath (4) by a filling layer (6); The outer wall of the metal sheath (4) is fixedly provided with a tack, and the material of the metal sheath (4) is copper; The tack has a wavy structure and the tack is evenly distributed on the outer wall of the metal sheath (4); The insulating layer (2) is made of polyimide film, and the thickness of the insulating layer (2) ranges from 20 micrometers to 200 micrometers. The polyimide film has at least four layers and an overlap rate of more than 50%.

2. The copper-braided steel wire high-temperature oil well heating cable according to claim 1, characterized in that, A braided layer (5) is fixedly provided on the outer wall of the metal sheath (4), and the braided layer (5) is made of steel wire.

3. The copper-woven steel wire braided high-temperature oil well heating cable according to claim 1, characterized in that, The refractory layer (3) is made of refractory mica tape, and the thickness of the refractory layer (3) ranges from 0.1 mm to 2 mm.

4. The copper-woven steel wire braided high-temperature oil well heating cable according to claim 1, characterized in that, The filler layer (6) is made of polytetrafluoroethylene.

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