Wind power hollow expanded diameter insulated flexible busbar, production equipment and production process

Abstract

The application relates to the technical field of electric wires and cables, and particularly discloses a wind power hollow expanding insulation flexible busbar, a production device and a production process, which comprise a mounting table, a metal pipe and a wire, a spiral groove is formed in the metal pipe, a mounting disc and a first driving motor are arranged on the mounting table, a wire roll, a second driving motor and a depth detection mechanism are arranged on the mounting disc, a wire winding machine is arranged on one side of the mounting disc, and a heating assembly is arranged between the wire winding machine and the mounting disc; the first driving motor drives the mounting disc to rotate, the second driving motor drives the wire roll to output the wire to be stranded on the metal pipe, the depth detection mechanism can detect the depth of the spiral groove of the metal pipe, the depth is prevented from being too deep to reduce the hollow structure strength of the busbar, the tensile strength of the busbar and the eccentricity of the conductor during stranding, the heating assembly can heat the wire to be stranded, the plasticizing capacity of the wire is improved, the stranding resistance of the wire is reduced, and the spiral spacing of the already-stranded wire is prevented from being too large.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric wires and cables, in particular to a wind power hollow expanded diameter insulated flexible busbar, a production device and a production process. BACKGROUND

[0002] The wind power hollow expanded diameter insulated flexible busbar is a power transmission conductor specially designed for wind power collection lines, which adopts a unique hollow expanded diameter structure and an insulation layer design, significantly increases the conductor outer diameter, effectively reduces the surface electric field strength, thereby reducing corona loss and radio interference, and is particularly suitable for harsh environments such as high altitude and strong wind. By optimizing the aluminum rod conductivity and mechanical strength, combining the multi-layer stranding process and the insulation extrusion technology, the stability, flexibility and electrical performance of the conductor are ensured, and the wind power hollow expanded diameter insulated flexible busbar is widely used in power transmission projects of 330kV and above voltage grade, providing reliable protection for efficient and safe operation of wind power plants.

[0003] In the prior art, the wind power hollow expanded diameter insulated flexible busbar includes a metal pipe and a conductor, the conductor is stranded on the metal pipe, and the stranding device of the wind power hollow expanded diameter insulated flexible busbar mainly consists of a pay-off stand, a take-up machine, a die, a take-up reel and a control system. The pay-off stand is used to place a single wire and adjust the pay-off tension to ensure that the conductor is uniform and stable; the take-up machine is the core equipment, which strands multiple single wires into a conductor by setting the stranding pitch and direction; the die includes a parallel line die and a compression die, which is used to shape and compress the conductor to ensure the dimensional accuracy; the take-up reel has a capacity matched with the conductor specification, which is used to collect the stranded conductor; and the control system monitors and adjusts the operating parameters of the take-up machine to ensure the stability of the stranding process and the quality of the conductor.

[0004] For the related technology in the above, a spiral groove is formed in the metal pipe in the middle of the busbar, and the excessive depth of the spiral groove directly reduces the hollow structure strength of the busbar, reduces the tensile strength of the busbar, and may cause eccentricity during subsequent conductor stranding. In addition, the conductor used in the busbar is generally thick, and when the conductor is stranded on the metal pipe, the spiral pitch of the stranded conductor may be too large due to the tension fluctuation of the conductor itself, incomplete stress release or insufficient friction with the metal pipe, thereby reducing the current carrying capacity and tensile strength. Therefore, improvement is needed. SUMMARY

[0005] In order to detect the depth of the spiral groove on the metal pipe and improve the stranding effect of the conductor on the metal pipe, the application provides a wind power hollow expanded diameter insulated flexible busbar, a production device and a production process.

[0006] The wind power hollow expanded diameter insulated flexible busbar, the production device and the production process provided by the application adopt the following technical solutions:

[0007] The utility model provides a kind of production equipment of wind power hollow expanding insulation flexible bus, including installation platform, metal pipe and wire, the spiral groove is opened in the metal pipe, installation platform is provided with mounting disc and first drive motor, the first drive motor is used to rotate drive the mounting disc, the mounting disc is rotatably provided with multiple groups of wire rolls and multiple groups of second drive motor that wind the wire, multiple groups of the second drive motor is used to rotate drive output wire of multiple groups of the wire roll, the middle part of the mounting disc is provided with installation port, the metal pipe passes through the installation port and is arranged at the center position of the installation port, the installation port is provided with depth detection mechanism for detecting the spiral groove depth of the metal pipe, one side of the mounting disc is provided with take-up machine, and the take-up machine is used to twist the wire on the metal pipe, heating assembly for quickly heating the wire to enter the take-up machine for stranding is provided between the take-up machine and the mounting disc.

[0008] By adopting the above technical scheme, the first drive motor is started, the first drive motor drives the mounting disc to rotate, the second drive motor is started, the second drive motor drives the wire roll to rotate and output the wire, the rotation of the mounting disc drives the wire roll to rotate synchronously, and under the action of the take-up machine, the wire is twisted onto the metal pipe. The depth detection mechanism in the present application can detect the spiral groove depth of the metal pipe before the wire is twisted. If the depth of the spiral groove is too deep, the metal pipe can be adjusted in time to avoid reducing the hollow structural strength of the bus and the tensile strength of the bus due to the excessive depth of the spiral groove. In addition, the possibility of eccentricity of the conductor during twisting can be reduced due to the low hollow structural strength of the bus. The heating assembly in the present application can quickly heat the wire about to be twisted with the metal pipe, improve the plastic deformation ability of the wire, reduce the twisting resistance of the wire, thereby reducing the excessive spiral pitch of the twisted wire and improving the current-carrying capacity and tensile strength of the bus.

[0009] Optionally, the depth detection mechanism includes a rotating ring, a mounting block, a probe, a pressure sensor, an abutment block and a drive assembly. The rotating ring is rotatably arranged on the installation port. The mounting block is movably arranged on the inner wall of the rotating ring. The mounting block has a mounting groove. The pressure sensor is fixedly arranged on the groove bottom of the mounting groove. The abutment block is arranged in the mounting groove and abuts against the pressure sensor. One side of the abutment block away from the pressure sensor is provided with a spring. One end of the spring away from the abutment block is provided with a connecting block. The probe includes a probe rod and a probe head. The probe rod is movably arranged at one end of the mounting block away from the inner wall of the rotating ring and is connected with the connecting block. The probe head is arranged at the end portion of the probe rod away from the connecting block and is used to abut against the inner bottom wall of the spiral groove. The drive assembly is arranged on the rotating ring and is used to rotate drive the rotating ring.

[0010] By adopting the technical scheme, the driving assembly drives the rotating ring to rotate, the rotating ring drives the mounting block to rotate synchronously when rotating, so that the probes on the mounting block move synchronously, and the metal pipe moves horizontally through the mounting opening, so that the probes can move in the spiral groove; the spring in the mounting block is always in a compressed state, when the probes move to a deeper spiral groove, the spring is elongated to push the probe rod on the connecting block to move to the groove bottom of the spiral groove, at this time, the spring reduces the pressure on the pressure sensor through the grounding block, and the depth of the spiral groove can be quickly judged according to the output value of the pressure sensor, so that the staff can find the problem in time and adjust the metal pipe, and the forming quality of the busbar is improved.

[0011] Optionally, the driving assembly comprises a third driving motor, a driving gear, a rotating gear ring and a driving piece, the third driving motor is arranged on the mounting table, the driving gear is arranged on the output shaft of the third driving motor, the rotating gear ring is sleeved on the outer circumferential wall of the rotating ring, and the driving gear and the rotating gear ring are meshed with each other, and the driving piece is arranged on the mounting block and the rotating ring, and is used for adaptively adjusting the position of the mounting block according to the pitch of the spiral groove of the metal pipe.

[0012] By adopting the technical scheme, the third driving motor is started, the output shaft of the third driving motor drives the driving gear to rotate, and since the driving gear and the rotating gear ring are meshed with each other, the rotating drive of the rotating ring connected with the rotating gear ring can be realized, and the driving piece can adjust the position of the mounting block, so that the probes can be placed in the spiral groove and abut against the inner bottom wall of the spiral groove.

[0013] Optionally, the driving piece comprises a threaded rod and a rotating handle, a moving groove is formed in the inner wall of the rotating ring, the mounting block is movably arranged in the moving groove, the threaded rod is rotatably arranged on the rotating ring and is threadedly connected with the mounting block, and the rotating handle is arranged at the end of the threaded rod away from the mounting block.

[0014] By adopting the technical scheme, the rotating handle is rotated, the rotating handle drives the threaded rod to rotate, the threaded rod drives the mounting block to move in the moving groove, so that the position of the mounting block is adjusted.

[0015] Optionally, the heating assembly comprises a mounting ring, a coil and a cooling structure, the mounting ring is fixedly arranged on the mounting table, the wire and the metal pipe are arranged through the mounting ring, the coil is arranged in multiple groups, the multiple groups of coils are arranged in a circular manner around the center of the mounting ring, the coil is connected with high-frequency alternating current, and the cooling structure is arranged on the mounting ring and the coil and is used for cooling the coil.

[0016] By adopting the technical scheme, after the coil is connected to high-frequency alternating current, multiple groups of coils generate high-frequency alternating magnetic field, so that eddy current is generated on the surface of the wire instantaneously, the wire is rapidly heated, the frequency of the high-frequency alternating current can be adjusted to adjust the heating effect of the wire and the heating effect of different types of wires, the coil generates heat when connected to power, thereby affecting the normal use of the coil, the cooling structure can cool the coil, thereby ensuring the stability of the high-frequency alternating magnetic field generated by the coil and prolonging the service life of the coil.

[0017] Optionally, the cooling structure comprises a cooling channel, a cooling pipe, a liquid storage tank and a delivery pump, the cooling channel is arranged in the coil and communicates with the cooling pipe, the liquid storage tank is arranged on the mounting table, the delivery pump is arranged on the liquid storage tank and communicates with the liquid storage tank through an inlet, and a section of the cooling pipe away from the cooling channel communicates with an outlet of the delivery pump.

[0018] By adopting the technical scheme, the delivery pump draws the cooling liquid in the liquid storage tank out and delivers it to the cooling channel through the cooling pipe to absorb the heat generated by the coil, thereby cooling the coil, ensuring the stability of the high-frequency alternating magnetic field generated by the coil and prolonging the service life of the coil.

[0019] Optionally, a magnetic shielding pipe is arranged at the center of the mounting ring, and the metal pipe passes through the magnetic shielding pipe.

[0020] By adopting the technical scheme, the magnetic shielding pipe can guide the magnetic field to bypass the metal pipe to form a magnetic shield, thereby reducing the influence of the high-frequency alternating electric field on the metal pipe.

[0021] Optionally, the take-up machine is provided with an inert gas cooling box on the side away from the mounting disc for rapidly cooling the wire after stranding.

[0022] By adopting the technical scheme, the inert gas cooling box can rapidly cool the wire after stranding by using inert gas with low temperature, and the heated conductor can be prevented from being oxidized during the cooling process.

[0023] The application also includes a wind power hollow expanding insulation flexible busbar:

[0024] The metal pipe is a galvanized steel flexible pipe, the wire is provided with multiple layers, the multiple layers of wires are all high-conductivity aluminum wires, and the outer side of the outermost layer of wires is provided with an insulating outer skin.

[0025] By adopting the technical scheme, the metal pipe is a galvanized steel flexible pipe, which improves the overall flexibility of the busbar, so that the busbar can be bent and is suitable for more use conditions.

[0026] The application also comprises a production process of a wind power hollow diameter expanding insulated flexible busbar:

[0027] S1: After the aluminum ingot is smelted, a high-conductivity aluminum rod is formed through continuous casting and rolling process, to ensure that the aluminum rod has excellent electrical conductivity and mechanical strength, and a galvanized steel strip is cold-bent and formed and a metal pipe is made by high-frequency welding process, and the weld is treated with zinc to strengthen the corrosion resistance;

[0028] S2: The high-conductivity aluminum rod is drawn into a wire through multiple drawing dies, during which super-low temperature liquid nitrogen cooling technology is used to reduce drawing deformation, and annealing treatment is used to eliminate internal stress and optimize crystal structure, to ensure the roundness and flexibility of the wire;

[0029] S3: The high-conductivity aluminum wire is stranded on the metal pipe, and the operation is repeated, and two layers of wires are stranded on the outside of the metal pipe to form a hollow stranded pipe;

[0030] S4: The insulating material is uniformly wrapped outside the stranded pipe by using an insulation extrusion process, and the extrusion temperature and take-up speed are accurately controlled to ensure that the insulation layer is uniform in thickness and strong in adhesion; the final product needs to undergo appearance inspection, electrical performance test and environmental test to verify its reliability.

[0031] In summary, the application comprises at least one of the following beneficial technical effects:

[0032] 1. The driving assembly drives the rotating ring to rotate, and the rotating ring drives the mounting block to rotate synchronously when rotating, so as to realize the synchronous movement of the probe on the mounting block, and the metal pipe moves horizontally through the mounting port, so the probe can move in the spiral groove; the spring in the mounting block is always in a compressed state, when the probe moves to a deeper spiral groove, the spring is elongated to push the probe rod on the connecting block to move to the bottom of the spiral groove, at this time, the spring reduces the pressure on the pressure sensor through the ground block, and the output value of the pressure sensor can quickly judge whether the depth of the spiral groove is too deep, so that the staff can timely find the problem and adjust the metal pipe, and improve the forming quality of the busbar;

[0033] 2. After the coil passes through high-frequency alternating current, multiple groups of coils generate high-frequency alternating magnetic field, so that eddy current is generated on the surface of the wire instantaneously, the wire is quickly heated, the frequency of the high-frequency alternating current can be adjusted to adjust the high-frequency alternating magnetic field, so as to adjust the heating effect of the wire and the heating effect of different types of wires; the coil generates heat when electrified, which affects the normal use of the coil, and the cooling structure can cool the coil to ensure the stability of the high-frequency alternating magnetic field generated by the coil and prolong the service life of the coil;

[0034] 3. Start the third driving motor, the output shaft of the third driving motor drives the main gear to rotate, since the main gear and the rotating gear ring are engaged with each other, so the rotating drive of the rotating ring connected with the rotating gear ring can be realized, the driving part can adjust the position of the mounting block, so as to facilitate the probe to be placed in the spiral groove and abut against the inner bottom wall of the spiral groove;

[0035] 4. The coil is provided with multiple groups and is arranged in annular symmetry, the multiple groups of coils are controlled by phase, so that the magnetic field generated by the mutually symmetrical coils is avoided to be offset, and the magnetic field generated between adjacent coils is avoided to affect each other, and the heating effect on the wire is improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0037] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0038] Figure 2 is Figure 1 another view of

[0039] Figure 3 is a partial structure schematic diagram of Figure 1

[0040] Figure 4 is a cross-sectional structure schematic diagram of the mounting block;

[0041] Figure 5 is a cross-sectional structure schematic diagram of the mounting ring.

[0042] Fig. 1 is a mounting table; 11 is a mounting disc; 111 is a wire coil; 112 is a second driving motor; 113 is a mounting port; 12 is a first driving motor; 2 is a metal pipe; 21 is a spiral groove; 3 is a wire; 4 is a depth detection mechanism; 41 is a rotating ring; 42 is a mounting block; 43 is a probe; 44 is a pressure sensor; 45 is an abutting block; 46 is a driving assembly; 461 is a third driving motor; 462 is a main gear; 463 is a rotating gear ring; 464 is a driving part; 4641 is a threaded rod; 4642 is a rotating handle; 4643 is a moving groove; 47 is a spring; 48 is a connecting block; 49 is a mounting groove; 5 is a heating assembly; 51 is a mounting ring; 52 is a coil; 53 is a cooling structure; 531 is a cooling channel; 532 is a cooling pipe; 533 is a liquid storage tank; 534 is a delivery pump; 6 is a magnetic isolation pipe; 7 is an inert gas cooling box; 8 is a wire winding machine. DETAILED DESCRIPTION​

[0043] The following description will be made in conjunction with the accompanying drawings Figures 1-5 The application is further described in detail.

[0044] The embodiment of the application discloses a wind power hollow expanding insulation flexible busbar, a production equipment and a production process, which refer to Figure 1 and Figure 2 A production equipment of a wind power hollow expanding insulation flexible busbar, comprising a mounting table 1, a metal pipe 2 and a wire 3, the metal pipe 2 is provided with a spiral groove 21, the mounting table 1 is provided with a mounting disc 11 and a first driving motor 12, the mounting disc 11 is rotatably provided with a plurality of wire winding groups 111 winding the wire 3 and a plurality of second driving motors 112, a mounting hole 113 is formed in the middle of the mounting disc 11, the metal pipe 2 is arranged through the center position of the mounting hole 113, the mounting hole 113 is provided with a depth detection mechanism 4, one side of the mounting disc 11 is provided with a take-up machine, and the take-up machine and the mounting disc 11 are provided with a heating assembly 5.

[0045] The first driving motor 12 is started, the first driving motor 12 drives the mounting disc 11 to rotate, the second driving motor 112 is started, the second driving motor 112 drives the wire winding group 111 to rotate and output the wire 3, the rotation of the mounting disc 11 drives the wire winding group 111 to rotate synchronously, and under the action of the take-up machine, the wire 3 is stranded on the metal pipe 2, the depth detection mechanism 4 in the embodiment can detect the depth of the spiral groove 21 of the metal pipe 2 before the metal pipe 2 strands the wire, if the depth of the spiral groove 21 is too deep, the metal pipe 2 can be adjusted in time, so that the hollow structural strength of the busbar and the tensile strength of the busbar are reduced due to the depth of the spiral groove 21 being too deep, in addition, the eccentricity of the conductor during stranding due to the hollow structural strength of the busbar being too low can be reduced, and the heating assembly 5 in the embodiment can quickly heat the wire 3 about to be stranded with the metal pipe 2, improve the plastic deformation capacity of the wire 3, reduce the stranding resistance of the wire 3, so that the spiral pitch of the wire 3 after stranding is reduced, and the current-carrying capacity and tensile strength of the busbar are improved.

[0046] Refer to Figure 1 , Figure 3 and Figure 4, the depth of the spiral groove 21 is directly related to the hollow structure strength of the metal pipe 2, therefore the depth detection mechanism 4 in the embodiment comprises a rotating ring 41, a mounting block 42, a probe 43, a pressure sensor 44, an abutting block 45 and a driving assembly 46, the rotating ring 41 is rotationally installed on the mounting port 113, the mounting block 42 is movably installed on the inner wall of the rotating ring 41, the mounting block 42 is provided with a mounting groove 49 in the inside, the pressure sensor 44 is fixedly installed on the groove bottom of the mounting groove 49, the abutting block 45 is installed in the mounting groove 49 and abuts against the pressure sensor 44, the spring 47 is welded on the side of the abutting block 45 away from the pressure sensor 44, the connecting block 48 is welded on the end of the spring 47 away from the abutting block 45, the probe 43 comprises a probe rod and a probe head, the probe rod is movably installed on the end of the mounting block 42 away from the inner wall of the rotating ring 41 and is welded with the connecting block 48, the probe head is installed on the end of the probe rod away from the connecting block 48, the probe head is provided with a ball, the ball abuts against the inner bottom wall of the spiral groove 21, and the driving assembly 46 is arranged on the rotating ring 41.

[0047] The driving assembly 46 drives the rotating ring 41 to rotate, the rotating ring 41 drives the mounting block 42 to synchronously rotate when rotating, so as to realize the synchronous movement of the probe 43 on the mounting block 42, and the probe head moves in the spiral groove 21 along with the horizontal movement of the metal pipe 2 through the mounting port 113; the spring 47 in the mounting block 42 is always in a compressed state, when the probe head moves into the deeper spiral groove 21, the spring 47 is elongated to push the probe rod on the connecting block 48 to move towards the groove bottom of the spiral groove 21, at this time, the spring 47 reduces the pressure on the pressure sensor 44 through the abutting block, and the output value of the pressure sensor 44 can quickly judge whether the depth of the spiral groove 21 is too deep, so that the staff can find the problem in time to adjust the metal pipe 2, improve the forming quality of the busbar, and in the embodiment, the number of the mounting blocks 42 is two, and the number of the corresponding probes 43 is also two, the two probes 43 can improve the accuracy of the detection of the depth of the spiral groove 21.

[0048] Referring to Figure 1In order to realize the rotation driving of the rotating ring 41, the driving assembly 46 in the embodiment comprises a third driving motor 461, a driving gear 462, a rotating gear ring 463 and a driving piece 464. The third driving motor 461 is fixedly installed on the installation table 1. The driving gear 462 is welded on the output shaft of the third driving motor 461. The rotating gear ring 463 is welded on the outer wall of the rotating ring 41. The driving gear 462 and the rotating gear ring 463 are engaged with each other. The driving piece 464 is installed on the installation block 42 and the rotating ring 41. The driving piece 464 comprises a threaded rod 4641 and a rotating handle 4642. The inner wall of the rotating ring 41 is provided with a moving groove 4643. The installation block 42 is movably installed in the moving groove 4643. The threaded rod 4641 is rotatably installed on the rotating ring 41 and is threadedly connected with the installation block 42. The rotating handle 4642 is welded on the end of the threaded rod 4641 away from the installation block 42.

[0049] The third driving motor 461 is started. The output shaft of the third driving motor 461 drives the driving gear 462 to rotate. Since the driving gear 462 and the rotating gear ring 463 are engaged with each other, the rotating ring 41 connected with the rotating gear ring 463 can be driven to rotate. The position of the installation block 42 can be adjusted by the driving piece 464, so that the probe can be conveniently placed in the spiral groove 21 and abut against the inner bottom wall of the spiral groove 21. The rotating handle 4642 is rotated to drive the threaded rod 4641 to rotate. The threaded rod 4641 drives the installation block 42 to move in the moving groove 4643, so that the position of the installation block 42 is adjusted.

[0050] Referring to Figure 1 and Figure 5 The diameter of the wire 3 required in the busbar is generally large. Therefore, the spiral spacing of the stranded wire 3 may be too large due to the tension fluctuation of the wire 3 itself, incomplete stress release or insufficient friction with the metal pipe 2. Therefore, the heating assembly 5 in the embodiment comprises an installation ring 51, coils 52 and a cooling structure 53. The installation ring 51 is fixedly installed on the installation table 1. The wire 3 and the metal pipe 2 are arranged through the installation ring 51. The coils 52 are installed in multiple groups. The multiple groups of coils 52 are fixedly installed in the center of the installation ring 51 in a ring shape. The coils 52 are connected with high-frequency alternating current. The cooling structure 53 is arranged on the installation ring 51 and the coils 52. The installation ring 51 is fixedly provided with a magnetic separation pipe 6 in the center. The metal pipe 2 is arranged through the magnetic separation pipe 6.

[0051] When the coil 52 is connected to high-frequency alternating current, multiple groups of the coil 52 generate high-frequency alternating magnetic field, so that eddy current is generated on the surface of the wire 3 instantaneously, the wire 3 is heated rapidly, the frequency of the high-frequency alternating current can be adjusted to adjust the heating effect of the wire 3 and the heating effect of different types of wires 3. The coil 52 generates heat when connected to power, which affects the normal use of the coil 52. The cooling structure 53 can cool the coil 52 to ensure the stability of the high-frequency alternating magnetic field generated by the coil 52 and prolong the service life of the coil 52. The magnetic shielding tube 6 can guide the magnetic field to bypass the metal tube 2 to form a magnetic shield, thereby reducing the influence of the high-frequency alternating electric field on the metal tube 2.

[0052] In the embodiment, the number of groups of the coil 52 is fourteen, which is a preferred mode in the embodiment. In other embodiments, the number of groups of the coil can be adjusted according to actual needs. In addition, the phase difference between adjacent coils is about 25.7° through phase control to avoid magnetic field cancellation.

[0053] Referring to Figure 1 and Figure 5 , in order to avoid the temperature of the coil 52 being too high, the cooling structure 53 in the embodiment includes a cooling channel 531, a cooling pipe 532, a liquid storage tank 533 and a delivery pump 534. The cooling channel 531 is arranged on the coil 52 and communicates with the cooling pipe 532. The liquid storage tank 533 is installed in the installation table 1. The delivery pump 534 is installed on the liquid storage tank 533 and the inlet end communicates with the liquid storage tank 533. The section of the cooling pipe 532 away from the cooling channel 531 communicates with the outlet end of the delivery pump 534.

[0054] The delivery pump 534 draws the cooling liquid in the liquid storage tank 533 and delivers it to the cooling channel 531 through the cooling pipe 532 to absorb the heat generated by the coil 52, thereby cooling the coil 52, ensuring the stability of the high-frequency alternating magnetic field generated by the coil 52, and prolonging the service life of the coil 52.

[0055] Referring to Figure 1 If the heated wire 3 is allowed to cool naturally, the surface layer of the wire 3 with a high temperature may be oxidized. Therefore, the inert gas cooling tank 7 is installed on the side of the wire winding machine away from the installation disc 11 in the embodiment. The inert gas cooling tank 7 can use inert gas with a low temperature to rapidly cool the wire 3 just twisted and avoid the heated conductor being oxidized during the cooling process.

[0056] The implementation principle of the production equipment for the wind power hollow expanded insulation flexible busbar in the embodiment is as follows:

[0057] Start the first drive motor 12, the first drive motor 12 drives the installation disc 11 to rotate, start the second drive motor 112, the second drive motor 112 drives the wire roll 111 to rotate and output the wire 3, the rotation of the installation disc 11 drives the wire roll 111 to rotate synchronously, and under the action of the wire collecting machine, the wire 3 is twisted on the metal pipe 2;

[0058] When the depth of the spiral groove 21 of the metal pipe 2 needs to be detected, the third drive motor 461 is started, the output shaft of the third drive motor 461 drives the driving gear 462 to rotate, so that the rotation of the rotating ring 41 connected with the rotating gear ring 463 can be driven, the rotating ring 41 drives the mounting block 42 to rotate synchronously when rotating, so that the probe 43 on the mounting block 42 moves synchronously, and the metal pipe 2 moves horizontally through the installation port 113, so that the probe moves in the spiral groove 21; The spring 47 in the mounting block 42 is always in a compressed state, when the probe moves into a deeper spiral groove 21, the spring 47 is elongated to push the probe rod on the connecting block 48 to move to the bottom of the spiral groove 21, at this time, the spring 47 reduces the pressure on the pressure sensor 44 through the ground block, and the depth of the spiral groove 21 can be quickly judged by the output value of the pressure sensor 44.

[0059] When the wire 3 needs to be heated to reduce the twisting resistance of the wire 3, the coil 52 is connected to high-frequency alternating current, a plurality of coils 52 generate a high-frequency alternating magnetic field, so that the surface of the wire 3 generates eddy current instantaneously, the wire 3 is heated rapidly, and the frequency of the high-frequency alternating current can be adjusted to adjust the high-frequency alternating magnetic field, so that the heating effect of the wire 3 is adjusted and controlled, and the heating effect of different types of wires 3 is adjusted and controlled.

[0060] The embodiment also includes a wind power hollow expanded insulated flexible busbar: the metal pipe 2 is a galvanized steel flexible pipe, the wire 3 is provided with multiple layers, and the multiple layers of wires 3 are all high-conductivity aluminum wires, and the outer side of the outermost layer of wire 3 is provided with an insulating outer skin. The metal pipe 2 is a galvanized steel flexible pipe, which improves the overall flexibility of the busbar, so that the busbar can be bent and is suitable for more use conditions.

[0061] The embodiment also includes a production process of a wind power hollow expanded insulated flexible busbar:

[0062] S1: After the aluminum ingot is melted, a high-conductivity aluminum rod is formed by continuous casting and rolling process, so as to ensure that the aluminum rod has excellent electrical conductivity and mechanical strength, and a galvanized steel strip is cold-bent and formed and made into a metal pipe 2 by high-frequency welding process, and the weld is treated by zinc plating to strengthen the corrosion resistance;

[0063] S2: the high-conductivity aluminum rod is drawn into the wire 3 through multiple drawing dies, during which the ultra-low-temperature liquid nitrogen cooling technology is adopted to reduce the drawing deformation, and the annealing treatment is performed to eliminate the internal stress and optimize the crystal structure, so as to ensure the roundness and flexibility of the wire 3;

[0064] S3: the high-conductivity aluminum wire 3 is stranded on the metal tube 2, and the operation is repeated to form the hollow stranded tube by stranding two layers of the wire 3 on the outer side of the metal tube 2;

[0065] S4: the insulation material is uniformly wrapped on the outer side of the stranded tube by using the insulation extrusion process, and the uniform thickness and strong adhesion of the insulation layer are ensured by precisely controlling the extrusion temperature and the take-up speed; the final product needs to pass the appearance inspection, electrical performance test and environmental test to verify its reliability.

[0066] Unless otherwise defined, technical or scientific terms used in the present application shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The words "first", "second", "third", and the like used in the specification and claims of the present application do not denote any order, quantity, or importance, but are used to distinguish different components. The words "one" or "a" or the like do not denote a quantity restriction, but denote the existence of at least one. The words "include" or "contain" or the like mean that the elements or objects appearing before the words "include" or "contain" cover the elements or objects listed after the words "include" or "contain" and their equivalents, and do not exclude other elements or objects. The words "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships may also be changed accordingly.

[0067] The above are optional embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made in the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A production device for a wind power hollow expanded diameter insulated flexible busbar, comprising a mounting platform (1), a metal tube (2) and a conductor (3), wherein the metal tube (2) is provided with a spiral groove (21), and is characterized in that: The mounting platform (1) is provided with a mounting plate (11) and a first drive motor (12), the first drive motor (12) being used to rotationally drive the mounting plate (11), a plurality of sets of coils (111) wound around the conductors (3) and a plurality of sets of second drive motors (112) being rotatably provided on the mounting plate (11), the plurality of sets of second drive motors (112) being used to rotationally drive the plurality of sets of coils (111) to output the conductors (3), a mounting opening (113) being provided in the middle of the mounting plate (11), the metal tube (2) passing through the mounting plate (11) The metal tube (2) is provided with a depth detection mechanism (4) on the installation opening (113) and is arranged at the center of the installation opening (113). The installation opening (113) is provided with a depth detection mechanism (4) for detecting the depth of the spiral groove (21) of the metal tube (2). A wire take-up machine is provided on one side of the installation disk (11). The wire take-up machine is used to twist the wire (3) on the metal tube (2). A heating component (5) is provided between the wire take-up machine and the installation disk (11) for quickly heating the wire (3) so that the wire (3) can enter the wire take-up machine for twisting. The depth detection mechanism (4) includes a rotating ring (41), a mounting block (42), a probe (43), a pressure sensor (44), an abutment block (45) and a driving assembly (46), wherein the rotating ring (41) is rotatably arranged on the mounting opening (113), the mounting block (42) is movably arranged on the inner wall of the rotating ring (41), a mounting groove (49) is provided in the mounting block (42), the pressure sensor (44) is fixedly arranged at the bottom of the mounting groove (49), the abutment block (45) is arranged in the mounting groove (49) and abuts against the pressure sensor (44), and the abutment block (45) is remote from the mounting groove (49). A spring (47) is provided on a surface away from the pressure sensor (44), and a connecting block (48) is provided on an end of the spring (47) away from the abutting block (45). The probe (43) includes a probe rod and a probe head. The probe rod is movably provided on an end of the mounting block (42) away from the inner wall of the rotating ring (41) and is connected to the connecting block (48). The probe head is provided at an end of the probe rod away from the connecting block (48) and is used to abut against the inner bottom wall of the spiral groove (21). The driving assembly (46) is provided on the rotating ring (41) and is used to drive the rotating ring (41) to rotate.

2. The production equipment for a wind power hollow expanded diameter insulated flexible busbar according to claim 1, characterized in that: The driving assembly (46) comprises a third driving motor (461), a driving gear (462), a rotating gear ring (463) and a driving member (464). The third driving motor (461) is arranged on the mounting platform (1), the driving gear (462) is arranged on the output shaft of the third driving motor (461), the rotating gear ring (463) is sleeved on the outer peripheral wall of the rotating ring (41), and the driving gear (462) and the rotating gear ring (463) are meshed with each other. The driving member (464) is arranged on the mounting block (42) and the rotating ring (41) and is used to adapt and adjust the position of the mounting block (42) according to the pitch of the spiral groove (21) of the metal tube (2).

3. The production equipment for a wind power hollow expanded diameter insulated flexible busbar according to claim 2, characterized in that: The driving member (464) includes a threaded rod (4641) and a rotating handle (4642). A movable groove (4643) is provided on the inner wall of the rotating ring (41). The mounting block (42) is movably arranged in the movable groove (4643). The threaded rod (4641) is rotatably arranged on the rotating ring (41) and is threadably connected to the mounting block (42). The rotating handle (4642) is arranged at the end of the threaded rod (4641) away from the mounting block (42).

4. The production equipment for a wind power hollow expanded diameter insulated flexible busbar according to claim 1, characterized in that: The heating assembly (5) comprises a mounting ring (51), a coil (52) and a cooling structure (53); the mounting ring (51) is fixedly arranged on the mounting platform (1); the wire (3) and the metal tube (2) are both arranged through the mounting ring (51); a plurality of groups of coils (52) are provided, and the plurality of groups of coils (52) are symmetrically arranged in a central ring shape of the mounting ring (51); and a high-frequency alternating current is supplied to the coils (52); the cooling structure (53) is arranged on the mounting ring (51) and the coils (52) for cooling the coils (52).

5. The production equipment for a wind power hollow expanded diameter insulated flexible busbar according to claim 4, characterized in that: The cooling structure (53) includes a cooling channel (531), a cooling pipe (532), a liquid storage tank (533) and a delivery pump (534). The cooling channel (531) is opened in the coil (52) and is communicated with the cooling pipe (532). The liquid storage tank (533) is arranged on the mounting platform (1). The delivery pump (534) is arranged on the liquid storage tank (533) and has a liquid inlet end communicated with the liquid storage tank (533). A section of the cooling pipe (532) away from the cooling channel (531) is communicated with a liquid outlet end of the delivery pump (534).

6. The production equipment for a wind power hollow expanded diameter insulated flexible busbar according to claim 4, characterized in that: A magnetic isolation tube (6) is provided at the center of the mounting ring (51), and the metal tube (2) is provided through the magnetic isolation tube (6).

7. The production equipment for a wind power hollow expanded diameter insulated flexible busbar according to claim 1, characterized in that: An inert gas cooling box (7) for rapidly cooling the twisted wires (3) is provided on a side of the wire take-up machine away from the mounting plate (11).

8. A wind power hollow expanded diameter insulated flexible busbar, according to the production equipment of a wind power hollow expanded diameter insulated flexible busbar according to any one of claims 1 to 7, characterized in that: The metal tube (2) is a galvanized steel hose, the conductor (3) is provided with multiple layers, the multiple layers of the conductor (3) are all high-conductivity aluminum wires, and the outer side of the outermost layer of the conductor (3) is provided with an insulating sheath.

9. A process for producing a wind power hollow expanded diameter insulated flexible busbar, according to the production equipment for a wind power hollow expanded diameter insulated flexible busbar according to any one of claims 1 to 8, characterized in that: S1: After the aluminum ingot is smelted, it is formed into a high-conductivity aluminum rod through continuous casting and rolling to ensure that the aluminum rod has excellent electrical conductivity and mechanical strength. At the same time, the galvanized steel strip is cold-bent and formed into a metal tube using a high-frequency welding process (2). The weld is zinc-filled to enhance the corrosion resistance. S2: The high-conductivity aluminum rod is drawn into a wire (3) through multiple drawing dies. Ultra-low temperature liquid nitrogen cooling technology is used in the process to reduce drawing deformation. Annealing treatment is also used to eliminate internal stress and optimize the crystal structure to ensure the roundness and flexibility of the wire (3); S3: twisting the high-conductivity aluminum conductor (3) onto the metal tube (2), and repeating the operation to twist two layers of conductors (3) on the outside of the metal tube (2) to form a hollow stranded wire tube; S4: The insulation material is evenly wrapped around the outside of the stranded wire tube using an insulation extrusion process. The insulation layer is ensured to have uniform thickness and strong adhesion by precisely controlling the extrusion temperature and take-up speed. The final product undergoes appearance inspection, electrical performance testing, and environmental testing to fully verify its reliability.

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