35kV wind power generation low-temperature-resistant salt-fog-resistant torsion-resistant cable and production equipment

Abstract

The utility model relates to the technical field of cables, and discloses a 35kV wind power generation low-temperature-resistant salt-fog-resistant anti-torsion cable, which comprises a main body mechanism, the main body mechanism comprises a cable body, main wire cores, a conductor shield, an insulating layer and an insulating shield, and the main wire cores are fixedly arranged in the cable body. According to the 35kV wind power generation low-temperature-resistant salt-fog-resistant anti-twisting cable, through the installation of the main body mechanism, when the cable body is processed, the conductor selects a tin-plated oxygen-free soft copper conductor of which the elongation is greater than 30%, the diameter of a single copper wire is reduced, the number of the copper wires is increased, the bunch stranding pitch diameter ratio of the conductor is 15 times, the bunch wire direction and the compound stranding direction are the same, and the stranding pitch diameter ratio is 13-17 times; the twisting direction is leftward; when the conductor rotates, torque can be effectively released, the conductor is not easy to break, a 35kv rubber insulating material is adopted, the resistivity of a rubber sheet is greater than or equal to 1014 omega.M, the strength is not less than 6.5 MPa, the elongation at break is less than 200%, and the durability of the cable body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a 35kV wind power generation low temperature resistant, salt fog resistant, torsion and bending resistant cable and production equipment. Background Art

[0002] As the most technologically mature, largest-scale development and most commercially viable power generation method among new energy sources, wind power generation has been developing at an impressive speed. Wind power cables, as supporting products for wind power generation equipment, are becoming a new type of cable with huge market potential and have been developed and put on the market by many cable companies.

[0003] The existing patent document with technical publication number CN208352016U provides a wind power generation power signal cable. The beneficial effects of the utility model are: by integrating power transmission and signal transmission, the problem of increased cost of laying optical cables separately is solved, and at the same time, effective real-time monitoring of the power generation system is realized.

[0004] However, the existing wind power cables are not easy to ensure that they have good low-temperature resistance and torsional bending resistance during use. Due to the harsh environment of wind power generation and the continuous rotation of the cables with the wind turbines, the cables are prone to breakage during long-term use, resulting in poor cable durability, which directly affects the normal progress of wind power generation operations and is not easy to meet the use requirements of wind power generation operations. Utility Model Content

[0005] Technical problem to be solved: The purpose of the utility model is to provide a 35kV wind power generation low-temperature resistant, salt spray resistant and torsion-resistant cable and production equipment, so as to solve the problem raised in the above background technology that the existing wind power generation cables are not convenient to ensure that they have good low-temperature resistance and torsion resistance when in use.

[0006] Technical solution: To achieve the above-mentioned purpose, the utility model provides the following technical solution: a 35kV wind power generation low temperature resistant, salt spray resistant and torsion resistant cable, comprising a main body structure, the main body structure comprising a cable body, a main core, a conductor shield, an insulating layer and an insulating shield, the main core is fixedly arranged inside the cable body, the conductor shield is fixedly arranged inside the cable body, the conductor shield is located at the outer end of the main core, the insulating layer is fixedly arranged inside the cable body, the insulating layer is located at the outer end of the conductor shield, the insulating shield is fixedly arranged inside the cable body, and the insulating shield is located at the outer end of the insulating layer;

[0007] The main body structure also includes a saddle-shaped filling, a ground core body, a ground core shielding, an inner sheath and an outer sheath. The saddle-shaped filling is fixedly arranged inside the cable body, the ground core body is fixedly arranged inside the cable body, the ground core shielding is fixedly arranged inside the cable body, the ground core shielding is located at the outer end of the ground core body, the inner sheath is fixedly arranged inside the cable body, the inner sheath is located at the outer end of the edge shielding and the ground core shielding, and the outer sheath is fixedly arranged at the outer end of the inner sheath.

[0008] The production equipment of 35kV wind power generation low temperature resistant, salt spray resistant and torsion resistant cable comprises a tensioning mechanism, wherein the tensioning mechanism comprises a support frame and a first guide frame, wherein the first guide frame is fixedly mounted on the right end of the upper end of the support frame.

[0009] Preferably, the tensioning mechanism further comprises a guide rod and a guide ring, wherein the guide rod is fixedly mounted on the inner end of the first guide frame, and the guide ring is fixedly mounted on the lower end of the guide rod.

[0010] Preferably, the tensioning mechanism further comprises an electric slide rail and an electric slider, wherein the electric slide rail is fixedly mounted at the middle of the upper end of the support frame, and the electric slider is movably mounted inside the electric slide rail.

[0011] Preferably, the tensioning mechanism further comprises a connecting rod and an adjusting ring, wherein the connecting rod is fixedly mounted on the inner end of the electric slider, and the adjusting ring is fixedly mounted on the lower end of the connecting rod.

[0012] Preferably, the tensioning mechanism further comprises a pressure sensor, wherein the pressure sensor is fixedly mounted at the lower end inside the adjusting ring, and the pressure sensor is electrically connected to the electric slide rail.

[0013] Preferably, the tensioning mechanism further includes a second guide frame, which is fixedly mounted on the left end of the upper end of the support frame, and the second guide frame has the same structure as the first guide frame.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The 35kV wind power generation low temperature resistant, salt spray resistant and torsion and bending cable is installed with the main body mechanism to achieve the following: during the processing of the cable body, the conductor is made of tinned oxygen-free soft copper conductor with an elongation greater than 30%, the diameter of a single copper wire is reduced, the number of copper wires is increased, the conductor bundle twisting ratio is 15 times, the direction of the wire bundle is the same as the direction of the re-twisting, the twisting ratio is 13~17 times, and the twisting direction is left-handed; such a conductor can effectively release the torque when rotating and is not easy to break. It uses 35kv rubber insulation material, and the resistivity of the rubber film is ≥10 14 Ω·M, strength not less than 6.5MPa, elongation at break less than 200%, which improves the durability of the cable body;

[0016] 2. The production equipment of the 35kV wind power generation low-temperature resistant, salt spray resistant and torsion-resistant cable is equipped with a tensioning mechanism to realize the production of the cable body. The design of the pressure sensor can monitor the tension of the cable during production and transportation, and can adjust it appropriately to avoid the cable from being loosened, knotted or broken due to excessive tension during transportation, thereby improving the automation and protection of the production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the main mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the tensioning mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the electric slide rail of the utility model.

[0021] In the figure: 1. main body; 101. cable body; 102. main line core; 103. conductor shield; 104. insulation layer; 105. insulation shield; 106. saddle-shaped filling; 107. ground core body; 108. ground core shield; 109. inner sheath; 110. outer sheath; 2. tensioning mechanism; 201. support frame; 202. first guide frame; 203. guide rod; 204. guide ring; 205. electric slide rail; 206. electric slider; 207. connecting rod; 208. adjustment ring; 209. pressure sensor; 210. second guide frame. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 - Figure 4The utility model provides a technical solution: a 35kV wind power generation low temperature resistant, salt spray resistant and torsion-resistant cable, comprising a main body mechanism 1, the main body mechanism 1 comprising a cable body 101, a main core 102, a conductor shield 103, an insulating layer 104 and an insulating shield 105, the main core 102 is fixedly arranged inside the cable body 101, the conductor shield 103 is fixedly arranged inside the cable body 101, the conductor shield 103 is located at the outer end of the main core 102, the insulating layer 104 is fixedly arranged inside the cable body 101, the insulating layer 104 is located at the outer end of the conductor shield 103, the insulating shield 105 is fixedly arranged inside the cable body 101, and the insulating shield 105 is located at the outer end of the insulating layer 104;

[0024] The main body 1 also includes a saddle-shaped filling 106, a ground core body 107, a ground core shield 108, an inner sheath 109 and an outer sheath 110. The saddle-shaped filling 106 is fixedly arranged inside the cable body 101, the ground core body 107 is fixedly arranged inside the cable body 101, the ground core shield 108 is fixedly arranged inside the cable body 101, the ground core shield 108 is located at the outer end of the ground core body 107, the inner sheath 109 is fixedly arranged inside the cable body 101, the inner sheath 109 is located at the outer end of the insulation shield 105 and the ground core shield 108, and the outer sheath 110 is fixedly arranged at the outer end of the inner sheath 109. During the processing of the cable body 101, the conductor is selected from tinned oxygen-free soft copper conductors with an elongation greater than 30%, which reduces the diameter of a single copper wire and increases the number of copper wires. The conductor bundle twisted section diameter ratio is 15 times, and the bundle direction and complex The twisting direction is the same, the twisting pitch ratio is 13~17 times, and the twisting direction is left-handed; the insulation layer 104 adopts 35kv rubber insulation material, the resistivity of the rubber film is ≥1014Ω·M, the strength is not less than 6.5MPa, and the elongation at break is not less than 200%; the rubber insulation layer 104 and the sheath layer are produced and formed at one time by rubber continuous vulcanization equipment; after the ground wire core body 107 is twisted, a layer of semi-conductive shielding material is extruded, that is, the ground wire core shield 108, to ensure that the outer diameter of the extrusion is 14.5~14.9mm; the sheath adopts XH-03A type, the average thickness of the sheath is not less than the nominal value, the thinnest point is qualified, the sheath strength is not less than 11MPa, the elongation at break is not less than 250%, and the thermal extension (200°℃); the cable body 101 torsion angle is ±90° / m; it is required to torsion 2 cable bodies for 101 cycles at -40℃ and torsion 1 cable body for 1010 cycles at room temperature. After torsion, it should pass a 15-minute AC voltage test and a partial discharge test, and the ground wire core resistance should not exceed 10% of the standard. The cable ends should be fixed, and a high and low temperature alternating torsion test should be carried out to observe the cable slippage, and the cable slippage is required to be ≤1mm.

[0025] The production equipment of 35kV wind power generation low temperature resistant, salt spray resistant and torsion bending cable comprises a tensioning mechanism 2, the tensioning mechanism 2 comprises a support frame 201 and a first guide frame 202, the first guide frame 202 is fixedly mounted on the right end of the upper end of the support frame 201, the tensioning mechanism 2 also comprises a guide rod 203 and a guide ring 204, the guide rod 203 is fixedly mounted on the inner end of the first guide frame 202, the guide ring 204 is fixedly mounted on the lower end of the guide rod 203, the tensioning mechanism 2 also comprises an electric slide rail 205 and an electric slider 206, the electric The slide rail 205 is fixedly mounted at the middle of the upper end of the support frame 201, the electric slider 206 is movably mounted inside the electric slide rail 205, the tensioning mechanism 2 also includes a connecting rod 207 and an adjusting ring 208, the connecting rod 207 is fixedly mounted at the inner end of the electric slider 206, the adjusting ring 208 is fixedly mounted at the lower end of the connecting rod 207, the tensioning mechanism 2 also includes a pressure sensor 209, the pressure sensor 209 is fixedly mounted at the lower end of the adjusting ring 208, the pressure sensor 209 is electrically connected to the electric slide rail 205, and the tensioning mechanism 2 also includes a connecting rod 207 and an adjusting ring 208. The tightening mechanism 2 also includes a second guide frame 210, which is fixedly mounted on the left end of the upper end of the support frame 201. The second guide frame 210 has the same structure as the first guide frame 202. After the cable is formed, the processed cable body 101 passes through the guide ring 204 on the first guide frame 202, and then passes through the adjustment ring 208 between the two sets of electric slide rails 205, and finally passes through the wire ring on the second guide frame 210. During the transmission of the cable, the cable moving inside the adjustment ring 208 is fed to the pressure sensor 209. A force is applied. When the cable to be transported is too loose, the pressure sensor 209 is under less pressure and transmits a signal to the electric slide rail 205. The electric slide rail 205 drives the electric slider 206 to move upward to tighten the cable body 101. When the cable to be transported is too tight, the pressure sensor 209 is under greater pressure and transmits a signal to the electric slide rail 205. The electric slide rail 205 drives the electric slider 206 to move downward to adjust the tension of the cable body 101 to avoid the cable being too tight and broken.

[0026] Working principle: During the processing of the cable body 101, the conductor is made of tinned oxygen-free soft copper conductor with an elongation greater than 30%, the diameter of a single copper wire is reduced, the number of copper wires is increased, the conductor bundle twisting ratio is 15 times, the direction of the wire bundle is the same as the direction of the re-twisting, the twisting ratio is 13~17 times, and the twisting direction is left; the insulation layer 104 uses 35kv rubber insulation material, the resistivity of the rubber film is ≥1014Ω·M, the strength is not less than 6.5MPa, and the elongation at break is not less than 200%; the rubber insulation layer 104 and the sheath layer are connected by a rubber sulfur device Prepare one-time production and molding; after the ground wire core body 107 twisted wire is completed, a layer of semi-conductive shielding material is extruded, that is, the ground wire core shield 108, to ensure that the outer diameter of the extrusion is 14.5 ~ 14.9mm; the sheath adopts XH-03A type, the average thickness of the sheath is not less than the nominal value, the thinnest point is qualified, the sheath strength is not less than 11MPa, the elongation at break is not less than 250%, thermal extension (200°C); the cable body 101 torsion angle is ±90° / m; it is required to torsion 2 cable bodies for 101 cycles at -40℃ and torsion 1 cable body for 1010 cycles at room temperature. After twisting, it should pass the 15-minute AC voltage test and partial discharge test, and the ground wire core resistance should not exceed 10% of the standard; the cable end should be fixed, and a high and low temperature alternating twisting test should be performed to observe the cable slippage, and the cable slippage should be required to be ≤1mm. After the cable is formed, the processed cable body 101 passes through the guide ring 204 on the first guide frame 202, and then passes through the adjustment ring 208 between the two sets of electric slide rails 205, and finally passes through the wire ring on the second guide frame 210. During the transportation of the cable, the electric wire moving inside the adjustment ring 208 The cable applies a force to the pressure sensor 209. When the cable to be transported is too loose, the pressure on the pressure sensor 209 is small, and the signal is uploaded to the electric slide rail 205. The electric slide rail 205 drives the electric slider 206 to move upward to tighten the cable body 101. When the cable to be transported is too tight, the pressure on the pressure sensor 209 is large, and the signal is uploaded to the electric slide rail 205. The electric slide rail 205 drives the electric slider 206 to move downward to adjust the tension of the cable body 101 to avoid the cable being too tight and broken.

[0027] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

A 1.35 kV wind power generation low temperature resistant, salt spray resistant, torsion and bending resistant cable comprises a main body (1), characterized in that: The main body structure (1) comprises a cable body (101), a main core (102), a conductor shield (103), an insulating layer (104) and an insulating shield (105); the main core (102) is fixedly arranged inside the cable body (101); the conductor shield (103) is fixedly arranged inside the cable body (101); the conductor shield (103) is located at the outer end of the main core (102); the insulating layer (104) is fixedly arranged inside the cable body (101); the insulating layer (104) is located at the outer end of the conductor shield (103); the insulating shield (105) is fixedly arranged inside the cable body (101); and the insulating shield (105) is located at the outer end of the insulating layer (104); The main body (1) further comprises a saddle-shaped filler (106), a ground wire core body (107), a ground wire core shield (108), an inner sheath (109) and an outer sheath (110); the saddle-shaped filler (106) is fixedly arranged inside the cable body (101); the ground wire core body (107) is fixedly arranged inside the cable body (101); the ground wire core shield (108) is fixedly arranged inside the cable body (101); the ground wire core shield (108) is located at the outer end of the ground wire core body (107); the inner sheath (109) is fixedly arranged inside the cable body (101); the inner sheath (109) is located at the outer ends of the insulation shield (105) and the ground wire core shield (108); and the outer sheath (110) is fixedly arranged at the outer end of the inner sheath (109). The production equipment of 2.35kV wind power generation low temperature resistant, salt spray resistant and torsion resistant cable comprises a tensioning mechanism (2), characterized in that: The tensioning mechanism (2) comprises a support frame (201) and a first guide frame (202), wherein the first guide frame (202) is fixedly mounted on the right end of the upper end of the support frame (201).

3. The production equipment of the 35kV wind power generation low temperature resistant, salt spray resistant and torsion resistant cable according to claim 2 is characterized in that: The tensioning mechanism (2) further comprises a guide rod (203) and a guide ring (204), wherein the guide rod (203) is fixedly mounted on the inner end of the first guide frame (202), and the guide ring (204) is fixedly mounted on the lower end of the guide rod (203).

4. The production equipment of the 35kV wind power generation low temperature resistant, salt spray resistant and torsion resistant cable according to claim 3 is characterized in that: The tensioning mechanism (2) further comprises an electric slide rail (205) and an electric slider (206); the electric slide rail (205) is fixedly mounted in the middle of the upper end of the support frame (201); and the electric slider (206) is movably mounted inside the electric slide rail (205).

5. The production equipment of the 35kV wind power generation low temperature resistant, salt spray resistant and torsion resistant cable according to claim 4 is characterized in that: The tensioning mechanism (2) further comprises a connecting rod (207) and an adjusting ring (208), wherein the connecting rod (207) is fixedly mounted on the inner end of the electric slider (206), and the adjusting ring (208) is fixedly mounted on the lower end of the connecting rod (207).

6. The production equipment of the 35kV wind power generation low temperature resistant, salt spray resistant and torsion resistant cable according to claim 5 is characterized in that: The tensioning mechanism (2) further comprises a pressure sensor (209), wherein the pressure sensor (209) is fixedly mounted at the lower end inside the adjustment ring (208), and the pressure sensor (209) is electrically connected to the electric slide rail (205).

7. The production equipment of the 35kV wind power generation low temperature resistant, salt spray resistant and torsion resistant cable according to claim 6 is characterized in that: The tensioning mechanism (2) further comprises a second guide frame (210), the second guide frame (210) being fixedly mounted on the left end of the upper end of the support frame (201), the second guide frame (210) having the same structure as the first guide frame (202).

Images