Self-adaptive power factor correction transformer

Abstract

The invention relates to the technical field of power electronics, and discloses a self-adaptive power factor correction transformer which comprises a cross arm, a transformer body fixedly connected to the top of the cross arm, an oil conservator fixedly connected to the top of the transformer body and an insulating sleeve fixedly connected to the top of the transformer body. Comprising a supporting column fixedly connected with the bottom of the inner wall of a chassis, the top of the supporting column is fixedly connected with an elastic film, the top of the elastic film is fixedly connected with a sealing cover, the top of the sealing cover is fixedly connected with a pushing seat, and the inner wall of the elastic film is fixedly connected with a spraying pipe. By arranging the pop-up assembly, a bottom switch of the alarm is pressed by the seal cover popped up upwards, so that the alarm is started to transmit an alarm signal to the outside to a ground maintainer, the temperature in the transformer can be controlled in real time, and the phenomenon that the transformer is overloaded to cause a short circuit phenomenon is avoided. The method is used for reminding a ground maintainer to maintain the transformer in time.

Description

Technical Field

[0001] This invention relates to the field of power electronics technology, specifically to an adaptive power factor correction transformer. Background Technology

[0002] Based on active power factor correction (APFC) technology, the phase difference between the grid input current and voltage is detected in real time. The control chip (such as FAN7528) with built-in zero current detector, multiplier and R / C filter dynamically adjusts the turn-on timing of the switching transistor to achieve dynamic power factor compensation. Zero current conduction mode: the switching transistor is triggered only when the inductor current drops to zero, reducing switching losses and electromagnetic interference. Feedback regulation mechanism: the voltage / current sampling circuit and PI regulator are combined with the PWM control chip to generate complementary drive signals to adapt to load fluctuations.

[0003] Patent application CN202111469305.3 discloses a voltage regulating main winding, a voltage regulating winding, and a tap adjustment assembly. The voltage regulating winding is provided with N*M taps; M is the inherent number of taps on a conventional voltage regulating winding; N is a positive integer, and the N*M taps divide the voltage range on the voltage regulating winding into N*M equally spaced voltage adjustment amounts, the equally spaced voltage adjustment amount not exceeding the highest rated inter-stage voltage of the voltage regulating winding.

[0004] However, this patent also has the following shortcomings: the high-frequency switching operation of the current adaptive power factor correction transformer will cause device switching losses, especially when fully loaded, which may cause local temperature rise, requiring additional heat dissipation design. The current transformer heat dissipation design cannot evaporate the heat quickly in a short time. In view of this situation, the adaptive power factor correction transformer is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive power factor correction transformer to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an adaptive power factor correction transformer, comprising a crossarm, a transformer fixedly connected to the top of the crossarm, an oil conservator fixedly connected to the top of the transformer, an insulating bushing fixedly connected to the top of the transformer, a connecting mechanism provided on the top of the transformer, and a discharge mechanism provided on the surface of the transformer, further comprising: The diffusion mechanism includes a chassis fixedly connected to the surface of the transformer, a sound amplification cavity fixedly connected to the surface of the chassis, an alarm fixedly connected to the top of the sound amplification cavity, and an ejector tube slidably connected to the bottom of the inner wall of the chassis. Through the connection between the connecting plate and the chassis, a portion of the coolant flowing inside the connecting plate is introduced into the chassis. The pop-out assembly includes a support column fixedly connected to the bottom of the inner wall of the chassis, an elastic membrane fixedly connected to the top of the support column, a cover fixedly connected to the top of the elastic membrane, a push seat fixedly connected to the top of the cover, and a spray pipe fixedly connected to the inner wall of the elastic membrane. When the pop-out pipe pops out to the top, it will cause the cover to detach from the top slot of the chassis.

[0007] According to the above technical solution, the connecting mechanism includes a base, which is fixedly connected to the top of the transformer and to the surface of the insulating sleeve. A side plate is fixedly connected to the top of the base, and a sliding cavity is fixedly connected to the top of the side plate. An activation component is provided on the inner wall of the sliding cavity. When the sliding seat slides left and right on the inner wall of the sliding cavity, the exhaust fan will blow the insulating sleeves on both sides evenly.

[0008] The heating assembly includes a compression tube fixedly connected to the top of the base, a protective sleeve fixedly connected to the top of the compression tube, a connecting ring fixedly connected to the top of the protective sleeve, and a venting hole on the surface of the protective sleeve. The end of the connecting ring away from the protective sleeve is fixedly connected to the top of the other side of the protective sleeve. The compression tube pushes the protective sleeve, causing it to rise and fall.

[0009] According to the above technical solution, the starting component includes a sliding seat, which is slidably connected to the inner wall of the sliding cavity via a slider. A starting box is fixedly connected to the top of the sliding seat, and an exhaust pump is fixedly connected to the top of the starting box. Exhaust fans are fixedly connected to both sides of the starting box. A push handle is slidably connected to the inner wall of the starting box via a slider. A push tube is fixedly connected to the right side of the starting box. The top of the protective sleeve pushes the bottom of the push handle, causing the push handle to slide upward on the inner wall of the starting box.

[0010] According to the above technical solution, an exhaust pump switch is fixedly connected to the top of the starter box, and a pusher is provided inside the starter box. When the push handle is moved to the top of the inner wall of the starter box, the top of the push handle will push the exhaust pump switch at the top of the inner wall of the starter box.

[0011] According to the above technical solution, exhaust holes are provided on both sides of the exhaust fan, and the push tube has telescopic characteristics, so that strong air is discharged to the outside through the exhaust fans on both sides of the start box.

[0012] According to the above technical solution, the discharge mechanism includes a connecting plate, which is fixedly connected to the surface of the transformer. Connecting frames are fixedly connected to both sides of the connecting plate, and a ventilation plate is fixedly connected to the surface of the connecting plate. When the coolant inside the cooling bag is discharged into the connecting plate through the discharge hole, the coolant will be introduced into the connecting frame through the internal slot of the connecting plate.

[0013] The pushing assembly includes a storage tank fixedly connected to the surface of a connecting plate. A tension arm is rotatably connected to both sides of the inner wall of the storage tank via a pivot. A pulling column is fixedly connected to both sides of the inner wall of the tension arm. A support frame is fixedly connected to the surface of the pulling column. A telescopic tube is fixedly connected to the surface of the support frame. One end of the telescopic tube away from the support frame is fixedly connected to one end of the pushing tube. One end of the connecting plate is fixedly connected to the surface of the chassis. The pulling column drives the tension arm to rotate outward.

[0014] According to the above technical solution, a cooling bladder is installed inside the storage tank, and coolant is injected into the storage tank. When the extension arm rotates outward, it will compress the cooling bladder inside the storage tank.

[0015] According to the above technical solution, the elastic membrane has elasticity, the surface of the ejector tube is provided with ejector holes, the cover is inserted into the top of the chassis, and when the ejector tube ejects to the top, it will cause the cover to come out of the top slot of the chassis.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up a connecting mechanism, uses an exhaust fan to blow strong air outwards, which in turn blows the insulating bushings on both sides of the transformer top. The strong air blown out by the exhaust fan carries away the heat from the insulating bushings. At the same time, when the sliding seat slides left and right on the inner wall of the sliding cavity, the exhaust fan blows the insulating bushings on both sides evenly. By setting up this mechanism, it is possible to prevent excessive heat generated by the winding leads inside the transformer from being transferred into the insulating bushings during transformer overload operation, thus avoiding internal damage to the insulating bushings.

[0017] 2. This invention, by setting up a discharge mechanism, allows the internal temperature of the adaptive power factor correction transformer to rise when it is fully loaded, which is then transferred to the ventilation plate and connecting frame on the surface of the transformer casing. When the coolant flows in the slots inside the ventilation plate and connecting frame, the coolant absorbs the heat inside the ventilation plate and connecting frame and evaporates it into hot air, which is then dissipated through the discharge holes on the surface of the connecting frame and ventilation plate. By setting up this mechanism, the heat on the surface of the transformer can be evaporated quickly, so as to ensure that the internal temperature of the transformer does not rise rapidly due to overload and damage the internal windings of the transformer.

[0018] 3. The present invention sets up a diffusion mechanism to spray coolant outward into the chassis through a spray pipe. An absorption groove is opened at the bottom of the inner wall of the chassis. The heat inside the transformer can be transferred into the chassis through the absorption groove. The coolant sprayed inside the chassis absorbs and evaporates the heat, thereby avoiding excessive heat inside the transformer during operation and increasing the short circuit rate caused by overload.

[0019] 4. This invention incorporates a pop-out component. When the pop-out tube pops out to the top, it causes the cover to detach from the top slot of the chassis. The pop-out cover presses the bottom switch of the alarm, thereby activating the alarm and transmitting an alarm signal to ground maintenance personnel. By incorporating this component, the internal temperature of the transformer can be controlled in real time, thus preventing short circuits caused by overload inside the transformer and alerting ground maintenance personnel to promptly inspect the transformer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a perspective view of the connecting mechanism of the present invention; Figure 3 This is a perspective view of the heating component of the present invention; Figure 4 This is a perspective view of the startup component of the present invention; Figure 5 This is a perspective view of the discharge mechanism of the present invention; Figure 6 This is a perspective view of the component driving the present invention; Figure 7 This is a perspective view of the diffusion mechanism of the present invention; Figure 8 This is a perspective view of the pop-up component of the present invention.

[0021] In the diagram: 1. Crossarm; 2. Transformer; 3. Oil tank; 4. Insulating bushing; 5. Connecting mechanism; 501. Base; 502. Side plate; 503. Sliding cavity; 504. Heating component; 5041. Compression pipe; 5042. Protective sleeve; 5043. Connecting ring; 505. Starting component; 5051. Sliding seat; 5052. Starting box; 5053. Push handle; 5054. Exhaust fan; 5055. Push pipe; 5056. Exhaust pump; 6. Discharge mechanism; 601. 602. Connecting plate; 603. Ventilation plate; 604. Connecting frame; 605. Pushing assembly; 6061. Storage tank; 6062. Pulling column; 6063. Extension arm; 6064. Support frame; 6065. Telescopic tube; 7. Diffusion mechanism; 701. Chassis; 702. Amplification cavity; 703. Alarm; 704. Pop-up tube; 705. Pop-up assembly; 7051. Supporting column; 7052. Elastic membrane; 7053. Spray tube; 7054. Cover; 7055. Pushing seat. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Example 1: See Figures 1-4 The present invention provides a technical solution: an adaptive power factor correction transformer, including a crossarm 1, a transformer 2 fixedly connected to the top of the crossarm 1, an oil conservator 3 fixedly connected to the top of the transformer 2, an insulating bushing 4 fixedly connected to the top of the transformer 2, a connecting mechanism 5 provided on the top of the transformer 2, and a discharge mechanism 6 provided on the surface of the transformer 2, and further including: The connecting mechanism 5 includes a base 501, which is fixedly connected to the top of the transformer 2 and to the surface of the insulating bushing 4. A side plate 502 is fixedly connected to the top of the base 501, and a sliding cavity 503 is fixedly connected to the top of the side plate 502. A starting component 505 is provided on the inner wall of the sliding cavity 503. When the adaptive power factor correction transformer is fully loaded, it will cause the local temperature of the transformer 2 to rise. At this time, the temperature of the winding inside the transformer 2 will rise, and the heat will be introduced into the insulating bushing 4 through the lead wire. The heat will be transferred outward through the base 501 connected to the bottom of the insulating bushing 4.

[0026] The heating component 504 includes a compression tube 5041 fixedly connected to the top of the base 501. A protective sleeve 5042 is fixedly connected to the top of the compression tube 5041. A connecting ring 5043 is fixedly connected to the top of the protective sleeve 5042. The surface of the protective sleeve 5042 has a heat dissipation hole. One end of the connecting ring 5043 away from the protective sleeve 5042 is fixedly connected to the top of the other side of the protective sleeve 5042. The compression tube 5041 expands and contracts to the outside when absorbing the heat transferred into it. The compression tube 5041 pushes the protective sleeve 5042, causing the protective sleeve 5042 to rise and fall.

[0027] The starting assembly 505 includes a sliding seat 5051, which is slidably connected to the inner wall of the sliding cavity 503 via a slider. A starting box 5052 is fixedly connected to the top of the sliding seat 5051, and an exhaust pump 5056 is fixedly connected to the top of the starting box 5052. Exhaust fans 5054 are fixedly connected to both sides of the starting box 5052. A push handle 5053 is slidably connected to the inner wall of the starting box 5052 via a slider. A push tube 5055 is fixedly connected to the right side of the starting box 5052. When the protective sleeve 5042 slides upwards, the top of the protective sleeve 5042 will push against the bottom of the push handle 5053. The part generates a push, causing the push handle 5053 to slide upward on the inner wall of the starter box 5052. By sliding the push handle 5053 inside the starter box 5052, it will push the pusher switch inside the starter box 5052. The pusher model is ED301 / 12: it is an electro-hydraulic pusher. When the pusher is activated, it will drive the sliding seat 5051 to slide inside the sliding cavity 503. At the same time, when the push handle 5053 moves to the top of the inner wall of the starter box 5052, the top of the push handle 5053 will push the exhaust pump 5056 switch at the top of the inner wall of the starter box 5052.

[0028] An exhaust pump 5056 switch is fixedly connected to the top of the starter box 5052. An actuator is installed inside the starter box 5052. When the exhaust pump 5056 switch is activated, the exhaust pump 5056 (model W2025) will start. This is a portable miniature air pump. Once the exhaust pump 5056 is activated, air is generated and discharged from both sides of the inner wall of the starter box 5052. Strong air is then expelled outwards by exhaust fans 5054 on both sides of the starter box 5052. This expelled air blows onto the insulating bushings 4 on both sides of the top of the transformer 2. A guide plate is installed at the air outlet of the exhaust fan to guide the airflow direction, ensuring it evenly covers the surface of the insulating bushings. Simultaneously, the installation angle of the exhaust fan is adjusted to ensure that the airflow covers the entire surface of the insulating bushings, preventing localized overheating.

[0029] The exhaust fan 5054 has exhaust holes on both sides, and the push tube 5055 has telescopic characteristics. At the same time, when the sliding seat 5051 slides left and right on the inner wall of the sliding cavity 503, the exhaust fan 5054 will blow evenly on the insulating sleeves 4 on both sides. This can prevent the excessive heat generated by the winding leads inside the transformer 2 from being transferred into the insulating sleeves 4 during the overload operation of the transformer 2, thus preventing internal damage to the insulating sleeves 4.

[0030] Example 2: Based on Example 1, please refer to the following... Figures 5-6The present invention provides a technical solution: the discharge mechanism 6 includes a connecting plate 601, which is fixedly connected to the surface of the transformer 2. Connecting frames 603 are fixedly connected to both sides of the connecting plate 601, and a ventilation plate 602 is fixedly connected to the surface of the connecting plate 601. When coolant is discharged into the connecting plate 601 through the discharge hole, it is introduced into the connecting frame 603 through the internal slots of the connecting plate 601. Since the connecting plate 601 and the connecting frame 603 cover the surface of the transformer 2's outer casing, when the adaptive power factor correction transformer is under full load, the increased internal temperature will be transmitted to the ventilation plate 602 and the connecting frame 603 on the surface of the transformer 2's outer casing. 3. When the coolant flows through the slots inside the ventilation plate 602 and the connecting frame 603, it absorbs and evaporates the heat inside these components into hot gas, which is then released through the exhaust holes on the surfaces of the connecting frame 603 and the ventilation plate 602. This rapid evaporation of heat from the surface of the transformer 2 prevents the internal temperature of the transformer 2 from rising too quickly due to overload, thus avoiding damage to the internal windings. Pressure relief valves are also installed on the surfaces of the ventilation plate 602 and the connecting frame 603. When the internal pressure exceeds a set value, the pressure relief valves automatically open to release excess gas and reduce the internal pressure. Additionally, defoamer is added to the coolant to reduce the formation of bubbles during evaporation.

[0031] The pushing assembly 604 includes a storage tank 6041 fixedly connected to the surface of the connecting plate 601. Tension arms 6043 are rotatably connected to both sides of the inner wall of the storage tank 6041 via a pivot. Pulling columns 6042 are fixedly connected to both sides of the inner wall of the tension arms 6043. A support frame 6044 is fixedly connected to the surface of the pulling columns 6042. A telescopic tube 6045 is fixedly connected to the surface of the support frame 6044. One end of the telescopic tube 6045 away from the support frame 6044 is fixedly connected to one end of the pushing tube 5055. One end of the connecting plate 601 is fixedly connected to the surface of the chassis 701. When the pushing tube 5055 slides on the top of the sliding cavity 503 via the sliding seat 5051, one end of the pushing tube 5055 will compress the telescopic tube 6045, causing the telescopic tube 6045 to extend inwards and press against the support frame 6044.

[0032] The storage tank 6041 is equipped with a cooling bladder and is filled with coolant. The support frame 6044 pushes the pull column 6042, which in turn drives the extension arm 6043 to rotate outward. When the extension arm 6043 rotates outward, it compresses the cooling bladder inside the storage tank 6041, causing the cooling bladder to deform and contract, thereby discharging the coolant inside the cooling bladder outward through the discharge hole inside the storage tank 6041.

[0033] Example 3: Based on Example 2, please refer to the following... Figures 7-8The present invention provides a technical solution: a diffusion mechanism 7, including a chassis 701 fixedly connected to the surface of a transformer 2, a sound amplification cavity 702 fixedly connected to the surface of the chassis 701, an alarm 703 fixedly connected to the top of the sound amplification cavity 702, and an ejector tube 704 slidably connected to the bottom of the inner wall of the chassis 701. When the coolant flows inside the connecting plate 601, a portion of the coolant flowing inside the connecting plate 601 is introduced into the chassis 701 through the connection between the connecting plate 601 and the chassis 701.

[0034] The pop-out assembly 705 includes a support column 7051 fixedly connected to the bottom of the inner wall of the chassis 701. An elastic membrane 7052 is fixedly connected to the top of the support column 7051, a cover 7054 is fixedly connected to the top of the elastic membrane 7052, and a push seat 7055 is fixedly connected to the top of the cover 7054. A spray pipe 7053 is fixedly connected to the inner wall of the elastic membrane 7052. Coolant introduced into the chassis 701 is discharged into the discharge pipe through the support column 7051 connected to the inner wall of the chassis 701. The coolant is sprayed outwards into the interior of the chassis 701 through the spray pipe 7053. An absorption groove is formed at the bottom of the inner wall of the chassis 701. This absorption groove can transfer heat from the inside of the transformer 2 into the interior of the chassis 701. The absorption groove is made of thermally conductive material and has fins inside to increase the heat dissipation area. The absorption groove is tightly fitted to the bottom of the inner wall of the chassis 701 and fixed with thermally conductive adhesive. When coolant is sprayed onto the surface of the absorption tank, heat is transferred to the coolant through the thermally conductive material, and the coolant evaporates to carry away the heat. Meanwhile, the coolant sprayed inside the chassis 701 absorbs and evaporates heat, preventing excessive heat buildup inside the transformer 2 during operation and thus reducing the likelihood of short circuits due to overload.

[0035] The elastic membrane 7052 is stretchable and elastic. The surface of the ejector pipe 7053 has ejection holes. The cover 7054 is inserted into the top of the chassis 701. When the transformer 2 operates under overload for an extended period, a short circuit may occur inside the transformer 2, resulting in instantaneous extremely high heat. A temperature sensor is installed near the windings inside the transformer to monitor the winding temperature in real time. When the temperature exceeds a set threshold, the sensor sends a signal to the microcontroller. The control unit triggers the hydraulic system inside the ejector pipe 704, causing the ejector pipe 704 to pop upwards. This causes the cover 7054 to press the alarm switch 703, thereby activating the alarm 703 to transmit an alarm signal to ground maintenance personnel. Simultaneously, a sealing ring is installed at the connection between the ejector pipe and the chassis to prevent coolant leakage. A waterproof cover is installed around the alarm to protect it from rain and dust. This allows for real-time temperature control of the transformer 2. When a short circuit occurs inside the transformer 2 due to overload, it can be used to alert ground maintenance personnel to promptly repair the transformer 2.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adaptive power factor correction transformer, comprising a crossarm (1), a transformer (2) fixedly connected to the top of the crossarm (1), an oil conservator (3) fixedly connected to the top of the transformer (2), an insulating bushing (4) fixedly connected to the top of the transformer (2), a connecting mechanism (5) provided on the top of the transformer (2), and a discharge mechanism (6) provided on the surface of the transformer (2), characterized in that, Also includes: The diffusion mechanism (7) includes a chassis (701) fixedly connected to the surface of the transformer (2), a sound amplification cavity (702) fixedly connected to the surface of the chassis (701), an alarm (703) fixedly connected to the top of the sound amplification cavity (702), and an ejector tube (704) slidably connected to the bottom of the inner wall of the chassis (701). The chassis (701) is used to store the ejector tube (704). The pop-out assembly (705) includes a support column (7051) fixedly connected to the bottom of the inner wall of the chassis (701), an elastic membrane (7052) fixedly connected to the top of the support column (7051), a cover (7054) fixedly connected to the top of the elastic membrane (7052), a push seat (7055) fixedly connected to the top of the cover (7054), and an ejection pipe (7053) fixedly connected to the inner wall of the elastic membrane (7052). The elastic membrane (7052) is used to support the bottom of the cover (7054). The discharge mechanism (6) includes a connecting plate (601), which is fixedly connected to the surface of the transformer (2). Connecting frames (603) are fixedly connected to both sides of the connecting plate (601), and a ventilation plate (602) is fixedly connected to the surface of the connecting plate (601). The ventilation plate (602) is used to dissipate heat to the outside. The pushing assembly (604) includes a storage tank (6041) fixedly connected to the surface of a connecting plate (601). The inner walls of the storage tank (6041) are rotatably connected to two sides via a pivot shaft. Pulling columns (6042) are fixedly connected to two sides of the inner walls of the pulling arms (6043). A support frame (6044) is fixedly connected to the surface of the pulling column (6042). A telescopic tube (6045) is fixedly connected to the surface of the support frame (6044). One end of the connecting plate (601) is fixedly connected to the surface of a chassis (701). The support frame (6044) is used to push the pulling column (6042).

2. The adaptive power factor correction transformer according to claim 1, characterized in that: The storage tank (6041) is equipped with a cooling bladder and is filled with coolant. The storage tank (6041) is used to deliver coolant to the ventilation plate (602).

3. The adaptive power factor correction transformer according to claim 1, characterized in that: The elastic membrane (7052) has elasticity, the surface of the ejector pipe (7053) is provided with ejector holes, and the cover (7054) is inserted into the top of the chassis (701) to seal the top of the chassis (701).

Images