A large intelligent transformer

Abstract

This invention relates to the field of transformers and discloses a large intelligent transformer, comprising a transformer and a housing. A protective mechanism is provided on the housing for protecting the transformer. The protective mechanism includes: a wind power component for converting external wind force into rotational power; a lifting and transmitting component for converting rotational power into upward power; and a sway suppression component, which, in conjunction with the wind power component and the lifting and transmitting component, suppresses the swaying of the conductor. The sway suppression component includes a suppression counterweight, a pulley system, and a cable. The pulley system is mounted on a support frame, which is mounted on the housing. One end of the cable is fixed to the suppression counterweight, and the other end passes through the pulley system and is clamped to the conductor connection point by a fixed clamp. A guide frame is provided on the outside of the suppression counterweight to limit its vertical displacement. This invention utilizes wind power as kinetic energy to achieve adaptive suppression of the conductor, thereby reducing the adverse effects of strong winds on conductors.

Description

Technical Field

[0001] This invention relates to the field of transformers, and more specifically to a large intelligent transformer. Background Technology

[0002] Large power transformers are core equipment in power transmission and distribution systems, typically exposed to the elements for extended periods. They are connected to overhead transmission lines via high-voltage bushings, forming a critical node in power transmission. However, this arrangement inevitably exposes them to direct wind loads, leading to increasingly prominent technical challenges.

[0003] When strong winds occur in the field, especially turbulent winds or periodic vortex winds, they will act on the conductors connected to the transformer, mainly generating the following two types of excitation:

[0004] I. Steady-state wind load: Continuous wind force will generate huge thrust and lift on the conductor, resulting in increased static displacement of the conductor and continuous static stress on the transformer bushing.

[0005] II. Dynamic Wind-Induced Vibration: When wind passes around a conductor, it generates alternating Karman vortex streets on the leeward side. When the frequency of these streets is close to the conductor's natural frequency, it can cause large-amplitude resonant swaying of the conductor, i.e., vortex-induced vibration. In addition, random excitation from gusts can also cause large-amplitude random swaying of the conductor.

[0006] The aforementioned shaking, especially low-frequency, large-amplitude oscillations, will be transmitted to the transformer bushings, tank, and internal structure, causing a series of serious adverse effects:

[0007] 1. The violent shaking of the conductor will generate alternating mechanical stress at the root of the high-voltage bushing of the transformer; under long-term action, it is easy to cause the bushing flange connection bolts to loosen, the porcelain insulator to crack, and the root sealing ring to fail, resulting in transformer oil leakage and creating serious safety hazards.

[0008] 2. Stress is transmitted to the inside of the transformer through the bushing, which may cause the winding clamping parts to loosen or shift, or even cause fatigue fracture of the lead connection points, affecting the electrical performance and mechanical life of the transformer.

[0009] 3. Continuous shaking will cause friction at the connection between the wire and the bushing terminal, damaging the conductive coating on the contact surface, resulting in increased contact resistance, which can lead to local overheating, burning, or even melting under load current.

[0010] Therefore, how to deal with the adverse effects of strong winds in the wild on transformers and power lines is an urgent problem to be solved. Summary of the Invention

[0011] The purpose of this invention is to provide a large intelligent transformer to solve the technical problem of strong winds in the field damaging transformer wires.

[0012] The objective of this invention can be achieved through the following technical solutions:

[0013] A large intelligent transformer includes a transformer and a housing. The housing is equipped with a protective mechanism for protecting the transformer. The protective mechanism includes:

[0014] Wind power modules are used to convert external wind power into rotational power.

[0015] A lifting transmission assembly is used to convert rotational power into upward power;

[0016] The sway suppression component, in conjunction with the wind power component and the lifting transmission component, suppresses the sway of the conductor.

[0017] Furthermore, the sway suppression assembly includes a suppression counterweight, a pulley block, and a cable tie. The pulley block is mounted on a stand, which is mounted on the outer casing. One end of the cable tie is fixed to the suppression counterweight, and the other end passes through the pulley block and is clamped to the connection of the wire by a fixed clamp. A guide frame is provided on the outside of the suppression counterweight, which is used to limit the suppression counterweight to only move up and down.

[0018] Furthermore, the lifting transmission assembly includes: a mounting frame; a first drive shaft connected to the wind energy component; the first drive shaft fixedly connected to the input shaft; the input shaft rotatably mounted on the mounting frame; multiple swing arms are hinged at equal intervals along the circumference at the bottom of the input shaft; a sleeve is provided at the upward movement trajectory of the swing arms; the sleeve is mounted on the mounting frame; a limit slider is provided on the outside of the sleeve; the limit slider is slidably mounted on a slide rail provided on the mounting frame; the sleeve has an internal thread; a screw is inserted into the sleeve; and the sleeve and the screw form a screw transmission pair.

[0019] Furthermore, the lifting and transmission assembly also includes a guide groove and a rack. The guide groove is mounted on the mounting frame, and the gear meshes with the rack. The gear shaft is coaxially and fixedly connected to the top of the screw. The rack is slidably mounted in the guide groove. The guide groove is also provided with multiple grooves corresponding to spring pins. The spring pins are fixedly mounted on the side of the rack. One side of the rack is connected to the suppression counterweight via a pull rope. The wind force and the height of the suppression counterweight are adjusted to match the step displacement of the rack.

[0020] Furthermore, the wind energy component includes: a wind cup, which is rotatably mounted on the outer casing, and the rotating shaft of the wind cup is connected to a first drive shaft via a bevel gear transmission module, wherein the bevel gear transmission module is used to convert the horizontal rotational motion of the wind cup into the vertical rotational motion connected to the first drive shaft.

[0021] Furthermore, a buffer airbag is provided at the bottom of the guide frame, which comes into contact with the buffer airbag when the counterweight falls to the bottom of the guide frame.

[0022] Furthermore, an auxiliary component is provided on one side of the cushioning airbag to assist in supporting the guide connection.

[0023] 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.

[0024] The beneficial effects of this invention are:

[0025] 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

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is an overall schematic diagram of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of a local structure in the image;

[0029] Figure 3 This is a schematic diagram of the protective structure in this invention;

[0030] Figure 4 This is a schematic diagram of the auxiliary component in this invention;

[0031] Figure 5 This is a schematic diagram of the groove and spring pin structure in this invention;

[0032] Figure 6 for Figure 5 A diagram from another angle.

[0033] 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 Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-6 As shown, this invention is a large intelligent transformer, including a transformer and a housing 1. A protective mechanism 2 is provided on the housing 1 for protecting the transformer; the protective mechanism 2 includes:

[0036] Wind power module 21 is used to convert external wind power into rotational power;

[0037] The lifting transmission assembly 22 is used to convert rotational power into upward power;

[0038] The sway suppression component 23, in conjunction with the wind power component 21 and the lifting transmission component 22, suppresses the sway of the conductor.

[0039] In this invention, the wind power component 21 converts the external wind force into the power of the lifting transmission component 22, thereby causing the sway suppression component 23 to work, so as to suppress the sway of the conductor.

[0040] The sway suppression assembly 23 includes a suppression counterweight 231, a pulley block 232, and a cable 233. The pulley block 232 is mounted on a stand 234, which is mounted on the outer casing. One end of the cable 233 is fixed to the suppression counterweight 231, and the other end passes through the pulley block 232 and is clamped to the connection of the wire by a fixed wire clamp. A guide frame 235 is provided on the outside of the suppression counterweight 231, which is used to limit the suppression counterweight 231 to only move up and down.

[0041] The lifting transmission assembly 22 includes: a mounting frame 221; a first drive shaft 222 connected to the wind power assembly 21; the first drive shaft 222 fixedly connected to the input shaft 223; the input shaft 223 rotatably mounted on the mounting frame 221; multiple swing arms 224 are hinged at equal intervals along the circumference at the bottom of the input shaft 223; a sleeve 225 is provided at the upward movement trajectory of the swing arms 224; the sleeve 225 is mounted on the mounting frame 221; a limit slider 226 is provided on the outside of the sleeve 225; the limit slider 226 is slidably mounted on a slide rail 227 provided on the mounting frame 221; the sleeve 225 has an internal thread; a screw 7 is inserted into the sleeve 225; the sleeve 225 and the screw 7 form a screw 7 transmission pair.

[0042] 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.

[0043] 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.

[0044] Figure 3 lie in Figure 2 Above, Figure 3 The pull rope 5 extends to Figure 2From the above, it can be seen that the present invention provides a specific structure for the protective mechanism 2. When there is a strong wind in the field, the wind force will act on the wind cup 211, causing the wind cup 211 to rotate. The rotation of the wind cup 211 transmits power to the first transmission shaft 222 after passing through the bevel gear transmission module 212. The first transmission shaft 222 drives the input shaft 223 to rotate. The stronger the wind, the faster the rotation speed of the input shaft 223. The faster the rotation speed of the input shaft 223, the greater the centrifugal force generated. Therefore, the swing arm 224 swings upward more, thus pushing the sleeve 225 on the swing path, causing the sleeve 225 to move upward. Due to the limitation of the slider and the slide rail 227, the sleeve 225 can only move upward. The sleeve 225 and the screw 7 form a screw 7 transmission pair. The movement of the sleeve 225 is converted into the rotation of the screw 7. The rotation of the screw 7 drives the gear 6 to rotate. The gear 6 meshes with the rack 229, thereby moving the rack 229 laterally within the guide groove 228. This gradually releases the height of the suppressing counterweight 231, causing it to descend. The stronger the wind, the more the suppressing counterweight 231 descends. Since the suppressing counterweight 231 is also connected to the locking cable 233 and the pulley block 232, the descending suppressing counterweight 231 pulls the locking cable 233. The stronger the wind, the stronger the pulling force on the locking cable 233. This results in a greater force acting on the guide connection, which in turn restrains the wire that was originally going to swing by the pulling force of the locking cable 233, thus overcoming the adverse effects of the wire swinging caused by strong winds in the field.

[0045] On the one hand, the protective mechanism 2 achieves a high degree of linkage in power transmission and efficient utilization of natural energy. After the wind power component 21 converts the external wind force into rotational power, it is precisely transmitted to the lifting transmission component 22 through the bevel gear transmission module 212, so that the horizontal rotation of the wind cup 211 is smoothly converted into the vertical rotation of the first transmission shaft 222. Subsequently, the input shaft 223, swing arm 224, sleeve 225, screw 7, gear 6 and rack 229 in the lifting transmission component 22 are linked in sequence to gradually convert the wind-driven rotational motion into the lateral stepping displacement of the rack 229. The rack 229 is connected to the suppression counterweight 231 of the swing suppression component 23 through the pull rope 5, forming a complete power chain from wind capture to suppression action triggering. The whole process does not require an additional external power source and is driven automatically by natural wind power. This reduces energy consumption and ensures that the power transmission links are closely connected, avoiding power loss and interruption. It achieves high efficiency and automation of power utilization and achieves the linkage effect of protecting the equipment with the power of nature.

[0046] On the other hand, the protective mechanism 2 can adaptively adjust the protective force according to the wind speed, achieving precise adaptation of the protective effect to the external environment. When the wind force increases in the field, the speed of the wind cup 211 increases, which in turn increases the centrifugal force of the input shaft 223, thereby increasing the swing amplitude of the swing arm 224 and the rising height of the sleeve 225. Through the transmission pair of the screw 7, the speed of the gear 6 is increased, which increases the lateral movement distance of the rack 229, thereby releasing more of the height of the suppressing counterweight 231, allowing the suppressing counterweight 231 to fall more, and thus increasing the traction force on the cable 233, thereby generating a stronger binding force on the wire connection. Conversely, when the wind force decreases, the adjustment is reversed, causing the suppressing counterweight 231 to rise and the traction force to weaken. This self-adjusting mechanism adapts to changes in wind force... The dynamic adjustment of the suppression 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 restraint when the wind is too weak. At the same time, the mechanism integrates wind energy capture, power transmission, adaptive adjustment and conductor sway suppression functions into one unit. This not only eliminates the trouble of setting up separate wind monitoring and drive devices, but also achieves the synergistic effect of multiple functions through the linkage of various components. It not only suppresses conductor sway, but also realizes the utilization of natural energy and adaptive adjustment of the protection force, truly achieving multiple benefits. It significantly improves the stability and safety of transformers in complex wind environments in the field, reduces the adverse effects of strong winds on transformer conductors, and extends the service life of the equipment.

[0047] A buffer airbag 8 is provided at the bottom of the guide frame 235. When the counterweight 231 falls to the bottom of the guide frame 235, it contacts the buffer airbag 8. An auxiliary component 9 is provided on one side of the buffer airbag 8. The auxiliary component 9 is used to assist in supporting the guide connection. The auxiliary component 9 includes a push rod 91. One end of the push rod 91 extends into the guide frame 235 and connects to the buffer airbag 8. The other end is connected to a concave support member 92. When the buffer airbag 8 is in a compressed state, the volume compression pushes the push rod 91 to extend outward, so that the support member 92 is pressed against the wire connection. Figure 4 The push rod 91 and support 92 are only set on one side of the buffer airbag to provide auxiliary support for the wire. Alternatively, push rods 91 and support 92 can be set on both sides to provide auxiliary support for multiple wires, depending on the actual situation.

[0048] In this invention, by setting up the buffer airbag 8, the impact of the counterweight 231 falling to its lowest point on the mounting frame 221, guide frame 235, etc., when the wind force is at its maximum, is avoided, which would cause damage to the conductor due to sudden force. Therefore, the buffer airbag 8 is set up to provide a certain degree of buffering. It should be noted that the buffer airbag 8 is equipped with an independent one-way air inlet valve and a one-way air outlet valve, so that after the volume is compressed, air is gradually released through the one-way air outlet valve to avoid the harm caused by the reaction force. At the same time, in order to be in a relatively safe state when the conductor is under maximum traction force, an auxiliary component 9 is set up. The volume of the buffer airbag 8 expands outward when it is compressed, thereby pushing the push rod 91 to extend outward, which allows the concave support 92 to be locked at the conductor connection, so as to achieve the purpose of auxiliary support and thus improve the stability of the conductor connection.

[0049] On the one hand, the buffer airbag 8 effectively buffers the impact of the falling counterweight 231. At the same time, the unique valve group design avoids the harm of the reaction force. When the wind increases and the counterweight 231 falls to the bottom of the guide frame 235, the buffer airbag 8 directly contacts the counterweight 231 and can absorb the impact force generated by its fall. This prevents the counterweight 231 from causing a hard impact on the mounting frame 221, guide frame 235 and other components. It also prevents damage caused by excessive force at the wire connection due to sudden impact, and ensures the structural integrity of each component of the equipment. At the same time, the independent one-way air inlet valve and one-way air outlet valve on the buffer airbag 8 can slowly release air through the one-way air outlet valve when the airbag is compressed, avoiding the reaction force generated by the rapid rebound of gas after the airbag is compressed. This further reduces the adverse effects of the impact on the equipment, and achieves the dual effect of buffer protection and reaction force avoidance, making the falling process of the counterweight 231 more stable and the protection more comprehensive.

[0050] On the other hand, the auxiliary component 9 and the buffer airbag 8 are cleverly linked, simultaneously providing auxiliary support to the wire connection while achieving buffering. When the buffer airbag 8 is compressed due to the pressure of the counterweight 231, the outward thrust generated by its volume compression will push the push rod 91 to extend outward, thereby causing the concave support member 92 connected to the push rod 91 to move closer to and press against the wire connection, so that the support member 92 is precisely locked at the wire connection, providing additional support to the wire connection. This design ensures that the compression action of the buffer airbag 8 not only plays a buffering role, but also simultaneously triggers auxiliary support. This function requires no additional power or operation, achieving a dual effect of pressure. It not only protects equipment components and wires through buffering, but also enhances the stability of wire connections through support. Especially under conditions of maximum wind force and strongest wire tension, the auxiliary support can further improve the resistance of wire connections to external forces, preventing wire displacement or damage due to excessive force. Together with the traction force of the zipper 233, it forms a synergistic protection, ensuring the stability of the wires in high wind environments. It truly achieves the effect of functional linkage and multiple benefits, greatly improving the protective reliability and practicality of the entire protective mechanism 2.

[0051] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A large intelligent transformer, characterized by, It includes a transformer and a housing, with a protective mechanism installed on the housing to protect the transformer; the protective mechanism includes: Wind power modules are used to convert external wind power into rotational power. A lifting transmission assembly is used to convert rotational power into upward power; The sway suppression component, in conjunction with the wind power unit and the lifting transmission unit, suppresses the sway of the conductor. The sway suppression assembly includes a suppression counterweight, a pulley block, and a cable. The pulley block is mounted on a stand, which is mounted on the outer casing. One end of the cable is fixed to the suppression counterweight, and the other end passes through the pulley block and is clamped to the connection of the wire by a fixed clamp. A guide frame is provided on the outside of the suppression counterweight to limit the suppression counterweight to only move up and down. The lifting transmission assembly includes: a mounting frame; a first drive shaft connected to the wind energy component; a first drive shaft fixedly connected to an input shaft; the input shaft rotatably mounted on the mounting frame; multiple swing arms are hinged at equal intervals along the circumference at the bottom of the input shaft; a sleeve is provided at the upward movement trajectory of the swing arms; the sleeve is mounted on the mounting frame; a limit slider is provided on the outside of the sleeve; the limit slider is slidably mounted on a slide rail provided on the mounting frame; an internal thread is provided inside the sleeve; a screw is inserted into the sleeve; and the sleeve and the screw form a screw transmission pair. The lifting and transmission assembly also includes a guide groove and a rack. The guide groove is mounted on the mounting frame, and the gear meshes with the rack. The gear shaft is coaxially and fixedly connected to the top of the screw. The rack is slidably mounted in the guide groove. The guide groove is also provided with multiple grooves corresponding to spring pins. The spring pins are fixedly mounted on the side of the rack. One side of the rack is connected to the suppression counterweight through a pull rope. The wind force and the height of the suppression counterweight are adjusted to match the step displacement of the rack.

2. The large smart transformer of claim 1, wherein, The wind energy component includes: a wind cup, which is rotatably mounted on the outer casing, and the rotating shaft of the wind cup is connected to a first drive shaft through a bevel gear transmission module, wherein the bevel gear transmission module is used to convert the horizontal rotational motion of the wind cup into the vertical rotational motion connected to the first drive shaft.

3. The large intelligent transformer according to claim 1 or 2, characterized in that, The bottom of the guide frame is equipped with a buffer airbag, which comes into contact with the buffer airbag when the counterweight falls to the bottom of the guide frame.

4. The large smart transformer of claim 3, wherein, An auxiliary component is provided on one side of the airbag to assist in supporting the guide connection.

5. The large smart transformer of claim 4, wherein, 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. When the buffer airbag is in a compressed state, the volume compression pushes the push rod to extend outward, causing the support to press against the wire connection.

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