Large intelligent transformer

Abstract

The invention relates to the field of transformers, and discloses a large intelligent transformer which comprises a transformer body and an outer shell, and a protection mechanism is arranged on the outer shell and used for protecting the transformer body; the protection mechanism comprises a wind energy assembly used for converting external wind power into rotating power; the lifting transmission assembly is used for converting the rotating power into upward power; the swing restraining assembly is matched with the wind energy assembly and the lifting transmission assembly to restrain swing of the wire; the swing restraining assembly comprises a restraining balance weight part, a pulley block and a zipper, the pulley block is arranged on a vertical frame, the vertical frame is arranged on the shell, one end of the zipper is fixed to the restraining balance weight part, the other end of the zipper penetrates through the pulley block and then is clamped at the connecting position of a wire through a fixed wire clamp, and a guide frame is arranged on the outer side of the restraining balance weight part. The guide frame is used for limiting and restraining the counterweight part to only move up and down. Wind power can be used as kinetic energy to realize self-adaptive suppression of the wire, so that the adverse effect of field strong wind on the wire is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of transformers, in particular to a large intelligent transformer. BACKGROUND

[0002] Large power transformers are the core equipment of power transmission and distribution systems, and are usually exposed to the natural environment in the wild for a long time. They are connected to overhead transmission lines through high-voltage bushings, forming a key node for power transmission. However, this arrangement inevitably exposes them to direct wind loads, leading to increasingly prominent technical problems.

[0003] When strong winds occur in the wild, especially turbulent or periodic vortex winds, they will act on the wires connected to the transformer, mainly producing the following two excitations: 1. Steady wind load: sustained wind force will generate a large thrust and lift on the wire, causing an increase in the wire's static displacement and a sustained static stress on the transformer bushing.

[0004] 2. Dynamic wind-induced vibration: When wind flows around the wire, it will produce alternating shedding Karman vortex streets on the leeward side of the wire. When the frequency of the vortex street is close to the natural frequency of the wire, it will induce a large resonance oscillation of the wire, i.e., vortex-induced vibration. In addition, random excitation by gusts will also induce a large random oscillation of the wire.

[0005] The above oscillation, especially the low-frequency and large-amplitude oscillation, will be transmitted to the transformer's bushing, oil tank, and internal structure, causing a series of serious adverse effects: 1. The violent oscillation of the wire will generate alternating mechanical stress on the root of the transformer's high-voltage bushing; under long-term action, it will easily cause the bushing flange connection bolt to loosen, the porcelain insulator to crack, and the root sealing ring to fail, resulting in transformer oil leakage and serious safety hazards.

[0006] 2. The stress is transmitted to the transformer's internal structure through the bushing, which may cause the winding compression piece to loosen and displace, or even cause the lead connection point to fatigue and break, affecting the electrical performance and mechanical life of the transformer.

[0007] 3. The continuous oscillation will cause friction at the connection between the wire and the terminal of the bushing, damaging the conductive coating on the contact surface, increasing the contact resistance, and under the load current, causing local overheating, ablation, and even melting.

[0008] Therefore, how to deal with the adverse effects of strong winds in the wild on transformer wires is a problem that needs to be solved urgently. SUMMARY

[0009] The purpose of the present application is to provide a large intelligent transformer to solve the technical problem of adverse effects of strong winds in the wild on transformer wires.

[0010] The object of the present application can be achieved by the following technical solutions: A large intelligent transformer comprises a transformer and an outer shell, and a protection mechanism is arranged on the outer shell to protect the transformer; the protection mechanism comprises: A wind energy component is used to convert external wind power into rotary power. A lifting transmission component is used to convert the rotary power into upward power. A swing suppression component cooperates with the wind energy component and the lifting transmission component to suppress the swing of the wire.

[0011] Further, the swing suppression component comprises a suppression counterweight, a pulley block and a zipper, the pulley block is arranged on a stand, the stand is arranged on the outer shell, one end of the zipper is fixed to the suppression counterweight, the other end of the zipper passes through the pulley block and is clamped to the connection of the wire through a fixed wire clamp, and a guide frame is arranged on the outer side of the suppression counterweight, and the guide frame is used to limit the suppression counterweight to move only up and down.

[0012] Further, the lifting transmission component comprises a mounting frame, a first transmission shaft connected with the wind energy component, the first transmission shaft is fixedly connected with an input shaft, the input shaft is rotatably arranged on the mounting frame, a plurality of swing arms are equidistantly arranged on the bottom of the input shaft in the circumferential direction, a sleeve is arranged at the upward opening movement track of the swing arm, the sleeve is arranged on the mounting frame, a limiting slide block is arranged on the outer side of the sleeve, the limiting slide block is slidably arranged on a slide rail arranged on the mounting frame, an internal thread is arranged in the sleeve, a screw rod is inserted into the sleeve, and a screw rod transmission pair is formed by the sleeve and the screw rod.

[0013] Further, the lifting transmission component further comprises a guide groove and a rack, the guide groove is arranged on the mounting frame, a gear is engaged with the rack, the wheel shaft of the gear is coaxially fixedly connected with the top end of the screw rod, the rack is limitingly and slidably arranged in the guide groove, a plurality of grooves corresponding to spring pins are arranged on the guide groove, the spring pins are fixedly arranged on the side surface of the rack, and one side of the rack is connected with the suppression counterweight through a pull rope; the height of the suppression counterweight is adjusted to be matched with the wind power through the step displacement of the rack.

[0014] Further, the wind energy component comprises a wind cup, the wind cup is rotatably arranged on the outer shell, and the rotating shaft of the wind cup is connected with the first transmission shaft through a bevel gear set transmission module, wherein the bevel gear set transmission module is used to convert the horizontal rotary motion of the wind cup into the vertical rotary motion connected with the first transmission shaft.

[0015] Further, the bottom of the guide frame is provided with a buffer air bag, and the buffer air bag is contacted when the suppression counterweight falls to the bottom of the guide frame.

[0016] Further, one side of the buffer air bag is provided with an auxiliary component, and the auxiliary component is used to assist in supporting the guide connection.

[0017] Furthermore, the auxiliary component includes a push rod, one end of which extends into the guide frame and connects to the buffer airbag, and the other end is connected to a concave support member. When the buffer airbag is in a compressed state, the volume compression pushes the push rod to extend outward, causing the support member to press against the wire connection.

[0018] The beneficial effects of this invention are: This invention can adaptively adjust the protective force according to the wind strength, achieving a precise match between the protective effect and the external environment. When the wind force increases in the field, the speed of the wind cup increases, which in turn increases the centrifugal force of the input shaft, thereby increasing the swing amplitude of the swing arm and the height of the sleeve. Through the screw transmission pair, the speed of the gear is increased, which increases the lateral movement distance of the rack, thereby releasing more height of the suppressing counterweight and allowing the suppressing counterweight to fall more, thus increasing the traction force on the cable and generating a stronger binding force at the wire connection. Conversely, when the wind force decreases, the adjustment is reversed, causing the suppressing counterweight to rise and the traction force to weaken. This feature of automatically adjusting the suppressing force according to the wind force ensures that the protective effect always matches the external wind force, effectively avoiding the problems of insufficient protection when the wind is too strong or excessive binding when the wind is too weak. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of a local structure in the image; Figure 3 This is a schematic diagram of the protective structure in this invention; Figure 4 This is a schematic diagram of the auxiliary component in this invention; Figure 5 This is a schematic diagram of the groove and spring pin structure in this invention; Figure 6 for Figure 5 A diagram from another angle.

[0021] Figure Descriptions: 1. Outer shell; 2. Protective mechanism; 21. Wind power component; 211. Wind cup; 212. Bevel gear transmission module; 22. Lifting and transmission component; 221. Mounting bracket; 222. First transmission shaft; 223. Input shaft; 224. Swing arm; 225. Sleeve; 226. Limiting slider; 227. Slide rail; 228. Guide groove; 229. Rack; 23. Swing suppression component; 231. Suppression counterweight; 232. Pulley block; 233. Cable lock; 234. Stand; 235. Guide frame; 3. Groove; 4. Spring pin; 5. Pull rope; 6. Gear; 7. Screw; 8. Buffer airbag; 9. Auxiliary component; 91. Push rod; 92. Support component. DETAILED DESCRIPTION

[0022] 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, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0023] Please refer to Figures 1-6 The present application is a large intelligent transformer, which comprises a transformer and an outer shell 1, and a protection mechanism 2 is arranged on the outer shell 1 and used for protecting the transformer; the protection mechanism 2 comprises: A wind energy component 21 is used for converting external wind power into rotating power; A lifting transmission component 22 is used for converting the rotating power into upward power; A swing suppression component 23 is used for suppressing the swing of the conductor by cooperating with the wind energy component 21 and the lifting transmission component 22.

[0024] In the present application, the external wind power is converted into the power of the lifting transmission component 22 by the wind energy component 21, so as to promote the swing suppression component 23 to work, thereby achieving the purpose of suppressing the swing of the conductor.

[0025] The swing suppression component 23 comprises a suppression counterweight part 231, a pulley set 232 and a zipper 233, the pulley set 232 is arranged on a vertical stand 234, the vertical stand 234 is arranged on the outer shell, one end of the zipper 233 is fixed on the suppression counterweight part 231, the other end of the zipper 233 is clamped at the connection of the conductor through the pulley set 232 and a fixed wire clamp, and the outer side of the suppression counterweight part 231 is provided with a guide frame 235, the guide frame 235 is used for limiting the suppression counterweight part 231 to only move up and down.

[0026] The lifting transmission component 22 comprises a mounting frame 221, a first transmission shaft 222 connected with the wind energy component 21, the first transmission shaft 222 is fixedly connected with an input shaft 223, the input shaft 223 is rotatably arranged on the mounting frame 221, a plurality of swing arms 224 are equidistantly arranged on the bottom of the input shaft 223 in the circumferential direction and are hingedly connected, a sleeve 225 is arranged at the movement track where the swing arms 224 are opened upward, the sleeve 225 is arranged on the mounting frame 221, a limiting sliding block 226 is arranged on the outer side of the sleeve 225, the limiting sliding block 226 is slidingly arranged on a slide rail 227 arranged on the mounting frame 221, an inner thread is arranged in the sleeve 225, a screw rod 7 is inserted into the sleeve 225, and the screw rod 7 transmission pair is formed by the sleeve 225 and the screw rod 7.

[0027] The lifting and transmitting assembly 22 also includes a guide groove 228 and a rack 229. The guide groove 228 is mounted on the mounting frame 221. The gear 6 meshes with the rack 229. The axle of the gear 6 is coaxially and fixedly connected to the top end of the screw 7. The other end of the gear 6 is rotatably connected to the side wall of the guide groove 228 through a connecting shaft 888. The rack 229 is slidably mounted in the guide groove 228. The guide groove 228 is also provided with multiple grooves 3 corresponding to spring pins 4. The spring pins 4 are fixedly mounted on the side of the rack 229. One side of the rack 229 is connected to the suppression counterweight 231 through a pull rope 5. The step displacement of the rack 229 is used to adjust the wind force to match the height of the suppression counterweight 231. When the pull rope 5 is connected to the suppression counterweight 231, a guide wheel can be installed on the mounting frame 221 to guide the pull rope 5.

[0028] The wind energy module 21 includes a wind cup 211, which is rotatably mounted on the outer casing 1. The rotating shaft of the wind cup 211 is connected to a first drive shaft 222 via a bevel gear transmission module 212. The bevel gear transmission module 212 converts the horizontal rotational motion of the wind cup 211 into the vertical rotational motion connected to the first drive shaft 222. The rotating shaft of the wind cup 211 is rotatably mounted on a mounting frame 221 via a bushing. The mounting frame 221 can be a shell structure, with the rotating shaft of the wind cup 211 rotatably extending out of the mounting frame 221. The bevel gear transmission module is integrated into a gearbox, which is fixedly mounted on the mounting frame 221.

[0029] Figure 3 lie in Figure 2 Above, Figure 3 The pull rope 5 extends to Figure 2It can be seen from the above that the specific structure of the protection mechanism 2 is provided in the application, when the wind force acts on the wind cup 211 to make the wind cup 211 rotate, the wind cup 211 transmits power to the first transmission shaft 222 through the bevel gear set transmission module 212 after rotation, the first transmission shaft 222 drives the input shaft 223 to rotate, the greater the wind force, the faster the rotation speed of the input shaft 223, the greater the centrifugal force generated by the faster rotation speed of the input shaft 223, so that the swinging arm 224 swings upward with a greater amplitude, thus pushing the sleeve 225 on the swinging path to make the sleeve 225 move upward, because the sliding block and the sliding rail 227 are limited, so the sleeve 225 can only move upward, the sleeve 225 and the screw rod 7 form a screw rod 7 transmission pair to convert the movement of the sleeve 225 into the rotation of the screw rod 7, the rotation of the screw rod 7 drives the gear 6 to rotate, the gear 6 and the rack 229 are in meshing transmission, so that the rack 229 moves transversely in the guide groove 228, and the height of the weight restraining part 231 is gradually released, so that the weight restraining part 231 falls, and the greater the wind force, the more the weight restraining part 231 falls, and because the weight restraining part 231 is also connected with the cooperating parts of the pulley set 232 and the zipper 233, the falling weight restraining part 231 pulls the zipper 233, and the greater the wind force, the greater the pulling force of the zipper 233, so that the force acting on the guide connection is greater, thereby the originally swinging wire is restrained by the pulling force of the zipper 233, so that the adverse effects caused by the swinging wire in the wild wind are overcome.

[0030] On the one hand, the protection mechanism 2 realizes high linkage of power transmission and efficient use of natural energy, the wind energy assembly 21 converts external wind power into rotary power, and then accurately transmits the rotary power to the lifting transmission assembly 22 through the bevel gear set transmission module 212, so that the horizontal rotation of the wind cup 211 is stably converted into the vertical rotation of the first transmission shaft 222, and then the input shaft 223, the swinging arm 224, the sleeve 225, the screw rod 7, the gear 6 and the rack 229 in the lifting transmission assembly 22 are sequentially linked to gradually convert the rotary motion driven by the wind power into the transverse step displacement of the rack 229, and the rack 229 is connected with the weight restraining part 231 of the swing restraining assembly 23 through the pull rope 5, forming a complete power chain from wind power capture to restraining action triggering. The whole process does not need additional external power source, and is completely driven by natural wind power, which reduces energy consumption, closely links the power transmission links, avoids power loss and interruption, realizes efficient and automatic use of power, and achieves the linkage effect of protecting the equipment with natural force.

[0031] On the other hand, the protection mechanism 2 can adaptively adjust the protection strength according to the wind power, realize the precise adaptation of the protection effect and the external environment, when the wind power in the wild increases, the rotation speed of the wind cup 211 increases to promote the centrifugal force of the input shaft 223, and then the swing arm 224 swings larger, the sleeve 225 rises higher, the rotation speed of the gear 6 is increased through the transmission pair of the screw rod 7, the horizontal moving distance of the rack 229 is increased, thereby releasing more height of the weight restraining part 231, and the weight restraining part 231 falls more, the traction force of the pull lock 233 is increased, and then the restraint force of the wire connection is stronger, and vice versa, when the wind power decreases, the weight restraining part 231 is adjusted upward, and the traction force is weakened. The characteristics of automatically adjusting the restraining strength according to the change of wind power make the protection effect always match the external wind power, effectively avoiding the problems of insufficient protection when the wind power is too strong or excessive restraint when the wind power is too weak. At the same time, the mechanism integrates the functions of wind energy capture, power transmission, adaptive adjustment and wire swing suppression in one, not only saves the trouble of separately setting the wind power monitoring device and the driving device, but also realizes the coordinated play of multiple functions through the linkage of each component, which not only completes the suppression of wire swing, but also realizes the utilization of natural energy and the adaptive adjustment of protection strength, truly achieving one stone two birds, greatly improving the stability and safety of the transformer in the complex wind environment in the wild, reducing the adverse effects of strong wind on the transformer wire, and prolonging the service life of the equipment.

[0032] The bottom of the guide frame 235 is provided with a buffer air bag 8, which is in contact with the buffer air bag 8 when the weight restraining part 231 falls to the bottom of the guide frame 235. One side of the buffer air bag 8 is provided with an auxiliary component 9 for auxiliary supporting the wire connection. The auxiliary component 9 includes a push rod 91, one end of which extends into the guide frame 235 and is connected with the buffer air bag 8, and the other end is connected with a concave supporting piece 92. When the buffer air bag 8 is in a compressed state, the volume compression pushes the push rod 91 to extend outward, so that the supporting piece 92 abuts against the wire connection. Figure 4 The push rod 91 and the supporting piece 92 are arranged on one side of the buffer air bag for the purpose of auxiliary supporting the wire, and according to the actual situation, the push rod 91 and the supporting piece 92 can be arranged on both sides to auxiliary support multiple wires.

[0033] In the application, by setting the buffer air bag 8, the impact of the weight part 231 on the mounting frame 221, the guide frame 235 and the like when the wind force is maximum is avoided, and the sudden force generated by the wire is prevented from causing damage. Therefore, the buffer air bag 8 can provide certain buffering. It should be noted that the buffer air bag 8 is provided with independent one-way air inlet valve and one-way air outlet valve, so that the volume is gradually released through the one-way air outlet valve after compression, so as to avoid the harm caused by the reaction force. At the same time, in order to be in a relatively safe state when the wire is under the maximum traction force, the auxiliary assembly 9 is further provided, which expands outward in the compressed state of the buffer air bag 8, so as to push the push rod 91 to extend outward, and the concave support 92 is just clamped at the wire connection, so as to achieve the purpose of auxiliary support, and further improve the stability of the wire connection.

[0034] On the one hand, the setting of the buffer air bag 8 realizes effective buffering of the impact of the weight part 231, and at the same time, the unique valve group design avoids the harm of reaction force. When the wind force increases and the weight part 231 descends to the bottom of the guide frame 235, the buffer air bag 8 directly contacts the weight part 231, which can absorb the impact force generated by the descent, avoid the hard impact of the weight part 231 on the mounting frame 221, the guide frame 235 and the like, prevent the wire connection from being damaged due to the sudden impact, and protect the structural integrity of the equipment. At the same time, the independent one-way air inlet valve and one-way air outlet valve provided on the buffer air bag 8 can slowly release air through the one-way air outlet valve when the air bag is compressed, so as to avoid the reaction force caused by the rapid rebound of the air bag after compression, further reduce the adverse effects of impact on the equipment, realize the double effects of buffering protection and reaction force avoidance, make the descent process of the weight part 231 more stable, and protect more comprehensively; On the other hand, the auxiliary assembly 9 and the buffer air bag 8 form a clever linkage, which achieves auxiliary support for the wire connection while buffering at the same time. When the buffer air bag 8 is in a compressed state due to the suppression of the extrusion of the counterweight part 231, the outward thrust generated by the volume compression of the buffer air bag 8 will push the push rod 91 to extend outward, and then drive the concave support 92 connected with the push rod 91 to move close to the wire connection and abut tightly, so that the support 92 is accurately clamped at the wire connection, providing additional support force for the wire connection. This design makes the compression action of the buffer air bag 8 not only play a buffering role, but also trigger an auxiliary support function at the same time, without the need for additional power or operation, achieving a one-press dual-effect, which not only protects the equipment parts and the wire through buffering, but also enhances the stability of the wire connection through support. Especially in the case of maximum wind force and strongest wire traction, auxiliary support can further enhance the anti-external force capability of the wire connection, avoid displacement or damage of the wire due to excessive force, and form a synergistic protection with the traction force of the zipper 233, so as to ensure the stability of the wire in a windy environment, and truly achieve the effect of functional linkage and one-press multi-effect, greatly improving the protection reliability and practicality of the entire protection mechanism 2.

[0035] The above describes one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the scope of the present application.

Claims

1. A large intelligent transformer, characterized by, The transformer and the outer shell are provided with a protection mechanism for protecting the transformer. The wind energy component converts external wind power into rotational power. The lifting transmission component converts the rotational power into upward power. The swing suppression component cooperates with the wind energy component and the lifting transmission component to suppress the swing of the wire.

2. The large smart transformer of claim 1, wherein, The swing suppression component includes a suppression counterweight, a pulley set, and a zipper.

3. The large smart transformer of claim 2, wherein, The pulley set is arranged on a stand, which is arranged on the outer shell.

4. The large smart transformer of claim 3, wherein, One end of the zipper is fixed to the suppression counterweight, and the other end is clamped to the connection of the wire through the pulley set and a fixed wire clamp.

5. The large smart transformer of claim 3, wherein, The outer side of the suppression counterweight is provided with a guide frame for limiting the upward and downward displacement of the suppression counterweight.

6. The large smart transformer of claim 4 or 5, wherein, The lifting transmission component includes a mounting bracket, a first transmission shaft connected to the wind energy component, and an input shaft fixedly connected to the first transmission shaft.

7. The large smart transformer of claim 6, wherein, The input shaft is rotatably mounted on the mounting bracket.

8. The large smart transformer of claim 7, wherein, The bottom of the input shaft is circumferentially and equidistantly hinged with a plurality of swing arms. The swing arms are arranged on the mounting bracket. The outer side of the sleeve is provided with a limiting slide block. The inner part of the sleeve is provided with an internal thread. The sleeve is inserted with a screw rod. The lifting transmission component further includes a guide groove and a rack. The guide groove is arranged on the mounting bracket. The gear shaft of the gear is coaxially and fixedly connected to the top end of the screw rod. The rack is limitingly and slidably installed in the guide groove. The guide groove is further provided with a plurality of grooves corresponding to the spring pins. The spring pins are fixedly arranged on the side of the rack. One side of the rack is connected to the suppression counterweight through a pull rope. The step displacement of the rack adjusts the height of the suppression counterweight to adapt to the wind power. The wind cup is rotatably mounted on the outer shell. The rotating shaft of the wind cup is connected to the first transmission shaft through a bevel gear set transmission module. The bevel gear set transmission module converts the horizontal rotation of the wind cup into the vertical rotation of the first transmission shaft. The bottom of the guide frame is provided with a buffer air bag. When the suppression counterweight falls to the bottom of the guide frame, it contacts the buffer air bag. One side of the buffer air bag is provided with an auxiliary component. The auxiliary component assists in supporting the guide connection. The auxiliary component includes a push rod. One end of the push rod is connected to the buffer air bag in the guide frame. The other end is connected to a concave support. When the buffer air bag is in a compressed state, the volume compression pushes the push rod to extend outward, so that the support is tightly pressed against the wire connection.

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