Low-temperature-resistant salt-mist-resistant wind power generation cable

Abstract

The utility model provides a low-temperature-resistant salt-mist-resistant wind power generation cable, relates to the cable technology, and particularly discloses a skeleton structure and a plurality of core wire structures, the plurality of core wire structures are installed in the skeleton structure, the skeleton structure is sleeved with an isolation sleeve, the outer side wall of the isolation sleeve is sleeved with an outer protection sleeve, and the outer protection sleeve is sleeved with an inner protection sleeve. A heat conduction structure is installed between the outer protective sleeve and the isolation sleeve and comprises two sets of heat conduction belts arranged in pairs, and the two sets of heat conduction belts are arranged in a staggered mode and then are in a spiral shape. A heat conduction structure is installed between the outer protection sleeve and the isolation sleeve, and the heat conduction structure can keep the temperature in the cable in a relatively constant state, so that the heat resistance or cold resistance of the structure is improved; the arranged auxiliary steel rope can strengthen the structural strength of the cable, and the auxiliary steel rope arranged in a circle can strengthen the tensile strength of the cable in severe environments such as the sea, so that the problems of breakage and the like of the cable in the use process are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, specifically, relate to a low temperature resistant salt mist resistant wind power cable. BACKGROUND

[0002] The known single-core wind energy cable is composed of a conductor, an insulation layer and a sheath layer, and has poor tensile and torsional properties and short service life during use. When the cable is twisted under its own gravity, the cable surface is prone to bulging, cracking and twisting, which affects normal use of the cable.

[0003] The cable is an important component of wind power generation equipment, and the safe operation and service life of the wind energy cable determine the operation cost of wind power generation. The wind energy cables produced in China have not been able to fully meet the harsh operating environment of wind power generation, and the imported wind energy cable products from abroad are expensive. Therefore, it is necessary to produce high-quality and high-performance wind energy cables for the development of wind power generation in China, especially in offshore wind farms, because of the particularity of the marine environment, the cable needs to be exposed to salt mist, humidity, and high temperature difference for a long time. Therefore, it must have excellent salt mist corrosion resistance. SUMMARY

[0004] The utility model discloses a low temperature resistant salt mist resistant wind power cable, which can solve the problems in the prior art.

[0005] The technical scheme of the utility model is as follows:

[0006] The utility model provides a low temperature resistant salt mist resistant wind power cable, which comprises a framework structure and a plurality of core wire structures, the core wire structures are installed in the framework structure, an isolation sleeve is sleeved on the framework structure, an outer protective sleeve is sleeved on the outer side wall of the isolation sleeve, a heat conducting structure is installed between the outer protective sleeve and the isolation sleeve, the heat conducting structure comprises two groups of heat conducting bands arranged in pairs, and the two groups of heat conducting bands are arranged in a spiral shape after being staggered.

[0007] In some technical schemes of the utility model, the framework structure comprises steel ropes and a plurality of support frames in the shape of a cross, the support frames are all sleeved on the steel ropes, and the core wire structures are installed in the cross-shaped regions of the support frames.

[0008] In some technical schemes of the utility model, the core wire structure comprises a core wire and an inner protective sleeve, and the inner protective sleeve is sleeved on the outer side wall of the core wire.

[0009] In some technical schemes of the utility model, a plastic insulation sleeve is arranged in the isolation sleeve.

[0010] In some technical schemes of the utility model, the heat insulation sleeve is arranged between the isolation sleeve and the outer protective sleeve.

[0011] In some technical schemes of the utility model, the plastic insulation sleeve is filled with low thermal conductivity material.

[0012] In some technical schemes of the utility model, the armored layer is arranged between the isolation sleeve and the heat insulation sleeve.

[0013] In some technical schemes of the utility model, a plurality of auxiliary steel ropes are arranged around the heat insulation sleeve and the outer protective sleeve.

[0014] Compared with the prior art, the utility model has at least the following advantages or beneficial effects: the heat conduction structure is arranged between the outer protective sleeve and the isolation sleeve, the heat conduction structure can keep the temperature in the cable relatively constant, and the heat resistance or cold resistance of the structure is increased; the auxiliary steel ropes can strengthen the structural strength of the cable, the auxiliary steel ropes arranged in a ring can strengthen the tensile strength of the cable in harsh environments such as the sea, and problems such as cable rupture during use are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective structural schematic view of the utility model.

[0016] Figure 2 It is a front view structural schematic view of the utility model.

[0017] Reference signs: 1, outer protective sleeve; 2, isolation sleeve; 3, plastic insulation sleeve; 4, core wire; 5, inner protective sleeve; 6, main steel rope; 7, support frame; 8, heat insulation sleeve; 9, auxiliary steel rope; 10, armored layer; 11, heat conduction belt; 12, low thermal conductivity material. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0020] EMBODIMENT

[0021] The utility model provides a kind of low temperature resistant salt mist resistant wind power cable, as shown in figure Figure 1 、 Figure 2 The utility model discloses a low temperature resistant salt mist resistant wind power cable, which comprises a framework structure and a plurality of core wires 4 structures, the number of the core wire 4 structures is 4 groups, and the 4 groups of core wire 4 structures are arranged around the framework structure. The framework structure is used to limit the relative displacement between the core wire 4 structures and prevent the 4 groups of core wire 4 structures from contacting each other. An isolation sleeve 2 is sleeved on the framework structure, which is a layered structure formed by copper strips, halogen-free and corrosion-resistant polyester non-woven fabric water-blocking belts and waterproof polyurethane corrosion-resistant belts bonded together in sequence. It can shield the signals of the core wire 4 structures and prevent moisture from entering the cable to cause corrosion of the internal structure of the cable. An outer protective sleeve 1 is sleeved on the outer side wall of the isolation sleeve 2, which protects the cable structure and is made of LSZH cable material. A heat-conducting structure is installed between the outer protective sleeve 1 and the isolation sleeve 2, which can keep the temperature in the cable relatively constant and increase the heat resistance or cold resistance of the structure. The heat-conducting structure includes two pairs of heat-conducting belts 11, which are arranged in a spiral shape after being staggered to ensure that they can increase the heating area of the above-mentioned structure for the cable and ensure that the cable can work normally in a cold and hot alternating environment.

[0022] The heat-conducting belt 11 is a capillary heat-conducting pipe, which utilizes the principle of heat conduction. The liquid in the heat pipe evaporates and dissipates in the cavity formed by the heat pipe, causing a large temperature difference between the two ends of the heat pipe, so that the heat is quickly conducted inside the heat pipe. The manufacturing method of the capillary heat-conducting pipe is to extract the heat pipe to a negative pressure state and then fill it with appropriate liquid. This liquid has a very low boiling point and is easy to evaporate. The inner wall of the cavity is provided with a wick, which is composed of capillary porous material. One end of the heat pipe is the evaporation end, and the other end is the condensation end. When one end of the heat pipe is heated, the liquid in the capillary tube evaporates rapidly, and the vapor flows to the other end under the action of the micro pressure difference and releases heat, and then condenses into liquid again. The liquid flows back to the evaporation section along the porous material under the action of capillary force, and the cycle continues. The heat is transferred from one end of the heat pipe to the other end, and the cycle is carried out quickly, and the heat can be continuously conducted.

[0023] In some technical schemes of the utility model, the framework structure includes steel rope and several support frames 7 in the shape of cross, the support frame 7 is sleeved on the main steel rope 6, and the core wire 4 structure is installed in the cross-shaped area of the support frame 7. The support frame 7 is made of flexible rubber material, so that the cable with the support frame 7 has flexibility, prevents the above structure from hindering the bending of the cable, ensures that the cable can bend in the use process, and the core wire 4 structure is installed in the cross-shaped area of the support frame 7. The four groups of core wire 4 structures are arranged in the cross-shaped area of the support frame 7, can play a good isolation effect on the cable, avoid mutual interference between the core wire 4 structures after electromagnetic field is generated between the core wire 4 structures, and influence the working efficiency of the cable.

[0024] In some technical schemes of the utility model, the core wire 4 structure includes the core wire 4 and the inner protective sleeve 5, the inner protective sleeve 5 is sleeved on the outer side wall of the core wire 4, can perform secondary protection on the cable structure, and the material of the inner protective sleeve 5 is LSZH cable material, and LSZH is low smoke halogen-free flame-retardant cable material.

[0025] In some technical schemes of the utility model, the isolation sleeve 2 is internally provided with a plastic insulation sleeve 3 for the core wire structure. The cable can be further insulated to improve the safety of the cable in use. The material of the plastic insulation sleeve 3 is irradiation cross-linked polyolefin material.

[0026] In some technical schemes of the utility model, a heat insulation sleeve 8 is installed between the isolation sleeve 2 and the outer protective sleeve 1. The heat insulation sleeve 8 is a sleeve-shaped structure made of polyurethane hard foam, has a heat insulation effect, and avoids the problem of premature aging of the rubber structure inside the cable caused by the cable being in a cold and hot alternating environment.

[0027] In some technical schemes of the utility model, the plastic insulation sleeve 3 is filled with low thermal conductivity material 12. The low thermal conductivity material 12 is ceramic fiber, and the thermal conductivity coefficient is usually between 0.02-0.03 W / m·K, has good high-temperature resistance and chemical stability. It can avoid the heat from the outside to the cable to affect the conveying efficiency of the core wire 4 and avoid the problem of premature aging of the rubber structure inside the cable caused by the cable being in a cold and hot alternating environment for a long time, so that the cable can work stably at a higher temperature, even in a high-temperature fire environment, it can also maintain certain electrical performance, and ensure the normal operation of the key equipment and system.

[0028] In some technical schemes of the utility model, an armor layer 10 is installed between the isolation sleeve 2 and the heat insulation sleeve 8. The armor layer 10 is woven by metal strips or metal wires, and has very high mechanical strength. This makes the cable can withstand greater tension and pressure in the use process, effectively resist the damage of external physical factors. And the armor layer 10 is made of metal, shields external electromagnetic interference signals, and provides a relatively pure environment for signal transmission inside the cable.

[0029] In some technical solutions of the utility model, a plurality of auxiliary steel ropes 9 are arranged around between the heat insulation sleeve 8 and the outer protective sleeve 1. The auxiliary steel ropes 9 can strengthen the structural strength of the cable. In a harsh environment such as at sea, the auxiliary steel ropes 9 arranged in a ring and the main steel rope 6 arranged between the core wires 4 can be used in cooperation to strengthen the tensile strength of the cable, so as to avoid problems such as cable rupture during use.

[0030] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A low-temperature-resistant, salt-fog-resistant wind power cable, characterized in that The application relates to a cable structure, which comprises a framework structure, a plurality of core wire structures, the core wire structures being arranged in the framework structure, an isolation sleeve (2) being arranged on the framework structure, an outer protective sleeve (1) being arranged on the outer side wall of the isolation sleeve (2), a heat conducting structure being arranged between the outer protective sleeve (1) and the isolation sleeve (2), the heat conducting structure comprising two groups of heat conducting bands (11) arranged in pairs, and the two groups of heat conducting bands (11) being arranged in a spiral shape after being staggered.

2. The low-temperature-resistant salt-fog-resistant wind power cable according to claim 1, characterized in that, The framework structure comprises a main steel rope (6) and a plurality of support frames (7) in the shape of a cross, the support frames (7) being arranged on the main steel rope (6), and the core wire structures being arranged in the cross-shaped areas of the support frames (7).

3. The low-temperature-resistant salt-fog-resistant wind power cable according to claim 1, characterized in that, The core wire structure comprises a core wire (4) and an inner protective sleeve (5), and the inner protective sleeve (5) is arranged on the outer side wall of the core wire (4).

4. A low-temperature-resistant, salt-fog-resistant wind power cable according to any one of claims 1 to 3, characterized in that The isolation sleeve (2) is provided with a plastic insulation sleeve (3) for the core wire structure.

5. The low-temperature-resistant salt-fog-resistant wind power cable according to claim 4, characterized in that, A heat insulation sleeve (8) is arranged between the isolation sleeve (2) and the outer protective sleeve (1).

6. The low-temperature-resistant salt-fog-resistant wind power cable according to claim 4, characterized in that, The plastic insulation sleeve (3) is filled with a low-heat-conducting material (12).

7. The low-temperature-resistant salt-fog-resistant wind power cable according to claim 5, characterized in that, An armor layer (10) is arranged between the isolation sleeve (2) and the heat insulation sleeve (8).

8. The low-temperature-resistant salt-fog-resistant wind power cable according to claim 7, characterized in that, A plurality of auxiliary steel ropes (9) are arranged around the heat insulation sleeve (8) and the outer protective sleeve (1).

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