Cable for oil-submerged pump
By using three main cores and three control cores in the submersible pump cable, with an external oil-resistant rubber sheath and reinforced strands, the problems of easy overheating and poor resistance to mechanical forces in high-temperature and high-pressure oil wells are solved. This achieves improved cable compactness and tensile strength, and extends service life.
Patent Information
- Application Number
- CN202520285946.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing submersible pump cables are prone to overheating in high-temperature and high-pressure oil well environments, have a non-compact structure, poor resistance to external mechanical forces, short service life, and limited functionality, failing to meet the adaptability requirements of complex environments.
The cable employs three main conductors and three control conductors, encased in an oil-resistant rubber sheath with reinforcing strands within the sheath. This compact core structure, achieved through selective reduction of gap space using high-strength materials, ensures structural stability, making it difficult for external forces to alter the cable's bonding configuration. Furthermore, the inclusion of reinforcing strands within the oil-resistant rubber sheath further enhances the cable's tensile strength.
The cable cross-sectional area has been reduced, improving the cable's structural compactness and tensile strength, enhancing its waterproof and oil-proof performance, making it suitable for the confined spaces of oil well casings, and extending its service life.
Smart Images
Figure CN223743315U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of cables, in particular to a cable for a submersible pump. BACKGROUND
[0002] The working conditions in the well are harsh, often in high temperature, high pressure, and oil gas containing very strong corrosive environment. The submersible pump power cable can be divided into two kinds of round and flat. Limited by the narrow space of the oil well casing, the submersible pump power cable is usually flat. Because the flat cable is an asymmetric structure, when power transmission, the electromagnetic induction caused by the imbalance of the magnetic field will cause magnetic hysteresis loss, which will heat the cable. When the size of the oil well casing allows, it is appropriate to use round cable. The electromagnetic field generated by the symmetrical structure of the round cable is uniformly distributed, the mutual interference is small, and the electromagnetic compatibility is good, which is convenient for laying and releasing in the oil well.
[0003] The use of submersible pump cable in different occasions has different requirements for the use characteristics and requirements of submersible pump cable. Especially in the oil field and other places where the use of cable is strictly required, not only the cable has good electrical performance and mechanical performance, but also has high adaptability to complex environment and other performances. For example: if the oil viscosity is too high, chemical agents need to be added for dilution; the submersible pump may accumulate a large amount of oil dirt during long-term use, affecting the normal work of the submersible pump. The ordinary submersible pump cable has the following technical problems: the function is relatively single, only the power can be transmitted, and the dilution and cleaning functions cannot be completed; the structure is simple, the mechanical external force resistance is poor, the tensile strength is weak, the laying is easy to damage, and it cannot meet the use requirements of adaptability to complex environment. After the cable is damaged by external force, vibration and the like, the service life is shortened.
[0004] The submersible pump power cable can be divided into two kinds of round and flat according to the shape. Limited by the narrow space of the oil well casing, the submersible pump power cable is usually flat. Because the flat cable is an asymmetric structure, when power transmission, the electromagnetic induction caused by the imbalance of the magnetic field will cause magnetic hysteresis loss, which will heat the cable. Therefore, when the size of the oil well casing allows, it is appropriate to use round cable.
[0005] The general round submersible pump cable has poor compactness, when power transmission, the electromagnetic induction caused by the imbalance of the magnetic field will cause magnetic hysteresis loss, which will heat the cable, and the service life is short. It has been a problem in the industry to manufacture a submersible pump cable suitable for the narrow space of the oil well casing and resistant to high temperature and oil. CONTENT OF THE INVENTION
[0006] In order to solve the above problems, the present application provides a cable for a submersible pump.
[0007] The cable for a submersible pump provided by the present application adopts the following technical scheme:
[0008] The utility model provides a kind of cable for submersible pump, including main wire group and control wire group: the main wire group includes three main wire cores, the outside of the main wire core is covered with main wire insulation layer, the outside of the main wire insulation layer is covered with water-blocking oil-resistant tape layer, the control wire group includes three control wire cores, the outside of the control wire core is covered with control wire insulation layer, the outside of the control wire group is covered with control wire sheath, the outside of the main wire group and control wire group is covered with oil-resistant rubber sheath, the gap formed between the main wire group and control wire group is provided with water-blocking oil-resistant filling layer, and a plurality of reinforcing strands are provided in the oil-resistant rubber sheath.
[0009] Further, the main wire core is a soft copper strand.
[0010] Further, the control wire core is a soft copper strand.
[0011] Further, the main wire insulation layer is a polyimide film or ethylene-propylene-diene rubber.
[0012] Further, the control wire insulation layer is ethylene-propylene-diene rubber or crosslinked polyethylene.
[0013] Further, the water-blocking oil-resistant filling layer is polyurethane and / or glass fiber.
[0014] Further, the reinforcing strand is a galvanized steel wire.
[0015] As described above, the present application includes at least one of the following beneficial technical effects:
[0016] The present application twists the main wire group and the control wire group and covers them with an oil-resistant rubber sheath. Compared with a triangularly arranged circular cable of the same load capacity, the cross-sectional area of the cable core is reduced by nearly 20%, greatly reducing the space required for cable wiring. On the other hand, the cable core structure is compact and stable, and external forces are difficult to change the combined layout between them. In addition, by providing reinforcing strands in the oil-resistant rubber sheath, the tensile strength of the cable is further improved. The product is mainly used for power connection lines of high-power oil pumps and water pumps, and has good waterproof and oil-proof performance. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the finished cable product of the present application;
[0018] Figure 2 It is a cross-sectional schematic diagram of the finished cable product of the present application.
[0019] Explanation of reference numerals in the drawings:
[0020] 1. main wire group; 11. main wire core; 12. main wire insulation layer; 13. water-blocking and oil-resistant tape layer; 2. control wire group; 21. control wire core; 22. control wire insulation layer; 23. control wire sheath; 3. oil-resistant rubber sheath; 4. water-blocking and oil-resistant filling layer; 5. reinforcing strand. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, and not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.
[0022] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0024] Example 1:
[0025] The present application will be further described in detail below with reference to the drawings.
[0026] The embodiment of the application discloses a cable for a submersible pump, which comprises a main wire group 1 and a control wire group 2: the main wire group 1 comprises three main wire cores 11, the outer part of each main wire core 11 is covered with a main wire insulation layer 12, the outer part of each main wire insulation layer 12 is covered with a water-blocking and oil-resistant tape layer 13, the control wire group 2 comprises three control wire cores 21, the outer part of each control wire core 21 is covered with a control wire insulation layer 22, the outer part of the control wire group 2 is covered with a control wire sheath 23, the outer part of the main wire group 1 and the control wire group 2 is jointly covered with an oil-resistant rubber sheath 3, a gap formed between the main wire group 1 and the control wire group 2 is provided with a water-blocking and oil-resistant filling layer 4, and a plurality of reinforcing strands 5 are arranged in the oil-resistant rubber sheath 3.
[0027] Preferably, the main wire core 11 is a soft copper strand.
[0028] Preferably, the control wire core 21 is a soft copper strand.
[0029] Preferably, the main wire insulation layer 12 is a polyimide film.
[0030] Preferably, the control wire insulation layer 22 is a ternary ethylene-propylene rubber.
[0031] Preferably, the water-blocking and oil-resistant filling layer 4 is polyurethane.
[0032] Preferably, the reinforcing strand 5 is a galvanized steel wire.
[0033] Embodiment 2:
[0034] The application will be further described in detail below with reference to the drawings.
[0035] The embodiment of the application discloses a cable for a submersible pump, which comprises a main wire group 1 and a control wire group 2: the main wire group 1 comprises three main wire cores 11, the outer part of each main wire core 11 is covered with a main wire insulation layer 12, the outer part of each main wire insulation layer 12 is covered with a water-blocking and oil-resistant tape layer 13, the control wire group 2 comprises three control wire cores 21, the outer part of each control wire core 21 is covered with a control wire insulation layer 22, the outer part of the control wire group 2 is covered with a control wire sheath 23, the outer part of the main wire group 1 and the control wire group 2 is jointly covered with an oil-resistant rubber sheath 3, a gap formed between the main wire group 1 and the control wire group 2 is provided with a water-blocking and oil-resistant filling layer 4, and a plurality of reinforcing strands 5 are arranged in the oil-resistant rubber sheath 3.
[0036] Preferably, the main wire core 11 is a soft copper strand.
[0037] Preferably, the control wire core 21 is a soft copper strand.
[0038] Preferably, the main wire insulation layer 12 is a ternary ethylene-propylene rubber.
[0039] Preferably, the control wire insulation layer 22 is cross-linked polyethylene.
[0040] Preferably, the water-resistant and oil-resistant filling layer 4 is glass fiber.
[0041] Preferably, the reinforcing strand 5 is galvanized steel wire.
[0042] The implementation principle of the cable for the submersible pump is as follows: the main wire group 1 and the control wire group 2 are twisted and jointly coated with the oil-resistant rubber sheath 3. Compared with the triangularly arranged round cable with the same load flow, the cross-sectional area of the cable core is reduced by nearly 20%, which greatly reduces the space required for the cable wiring. On the other hand, the cable core structure is compact and stable, and it is difficult for external force to change the combined layout therebetween. In addition, the reinforcing strand 5 is arranged in the oil-resistant rubber sheath 3, which further improves the tensile strength of the cable. The product is mainly used for the power connection line of the high-power oil pump and water pump, and has good waterproof and oil-proof performance.
[0043] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A cable for a submersible pump, characterized in that The application relates to a cable, which comprises a main wire group (1) and a control wire group (2), the main wire group (1) comprises three main wire cores (11), the outer part of each main wire core (11) is covered with a main wire insulation layer (12), the outer part of the main wire insulation layer (12) is covered with a water-blocking and oil-resistant tape layer (13), the control wire group (2) comprises three control wire cores (21), the outer part of each control wire core (21) is covered with a control wire insulation layer (22), the outer part of the control wire group (2) is covered with a control wire sheath (23), the outer part of the main wire group (1) and the control wire group (2) is jointly covered with an oil-resistant rubber sheath (3), a water-blocking and oil-resistant filling layer (4) is arranged in the gap between the main wire group (1) and the control wire group (2), and a plurality of reinforcing strands (5) are arranged in the oil-resistant rubber sheath (3).
2. A cable for use in a submersible pump according to claim 1, characterized in that: The main wire core (11) is a soft copper strand.
3. The cable of claim 1, wherein: The control wire core (12) is a soft copper strand.
4. The cable of claim 1, wherein: The main wire insulation layer (12) is a polyimide film or a ternary ethylene-propylene rubber.
5. The cable of claim 1, wherein: The control wire insulation layer (22) is a ternary ethylene-propylene rubber or a cross-linked polyethylene.
6. The cable of claim 1, wherein: The water-blocking and oil-resistant filling layer (4) is polyurethane and / or glass fiber.
7. The cable of claim 1, wherein: The reinforcing strand (5) is a galvanized steel wire.