A transformer high-voltage bushing current display device

Abstract

This invention proposes a transformer high-voltage bushing current display device, comprising an induction coil, a energized coil, an indicator device, and a moving device. The induction coil is connected to the energized coil, and the moving device is located inside the indicator device, which is positioned opposite to the energized coil. The induction coil is fixed at the high-voltage bushing. Current flowing through the high-voltage bushing induces a current in the induction coil, which powers the energized coil, allowing the moving device to move back and forth within the indicator device and indicate the corresponding current value. This invention utilizes principles such as electromagnetic induction, like-pole repulsion, and magnetic levitation to install a current indicator on the high-voltage bushing of the transformer. It allows direct viewing of the high-voltage current value to assess the transformer's operating status. The device is compact and can be installed indoors or outdoors, without location restrictions. Installation is convenient, requiring no alteration to the original bushing structure. Furthermore, the current indication can be observed 360° without blind spots.

Description

Technical Field

[0001] This invention relates to the field of current display technology, and more specifically to a transformer high-voltage bushing current display device. Background Technology

[0002] Currently, the high-voltage side current indication of transformers is achieved by using a high-voltage current transformer to convert the current before connecting an ammeter to indicate the current. However, small-capacity transformers without a switchgear on the high-voltage side generally lack high-voltage current indication devices. Therefore, during transformer inspections, it is impossible to determine whether there are problems such as phase imbalance or overcurrent on the high-voltage side.

[0003] The aforementioned problems have become safety hazards in transformer operation. Summary of the Invention

[0004] This invention addresses the problem that small-capacity transformers currently lack high-voltage current indication devices, making it impossible to determine whether there is phase deviation or overcurrent in the high-voltage side current. It proposes a transformer high-voltage bushing current display device.

[0005] This invention proposes a transformer high-voltage bushing current display device, comprising an induction coil, a energized coil, an marking device, and a moving device. The induction coil is connected to the energized coil, and the moving device is located within the marking device, which is positioned opposite to the energized coil. The induction coil is fixed to the high-voltage bushing. Current flowing through the high-voltage bushing induces a current in the induction coil, which powers the energized coil, allowing the moving device to move back and forth within the marking device and indicate the corresponding current value. Through the principle of electromagnetic induction, the current in the high-voltage bushing induces a current in the induction coil, which powers the energized coil. The energized coil, after being energized, generates polarity. Under the repulsive force of like charges, the moving device moves back and forth within the marking device, thus indicating the corresponding current value. The entire device has a simple structure, stable display, and convenient installation, solving the problem of small-capacity transformers lacking high-voltage current indicators, which prevents the determination of whether the high-voltage side current is biased or overcurrent.

[0006] Preferably, the system further includes a rectifier and filter device located between the induction coil and the energized coil. The rectifier and filter device includes a rectifier bridge and a filter capacitor. The induced current generated by the induction coil can supply power to the energized coil after passing through the rectifier bridge and the filter capacitor. The rectifier bridge first converts the alternating current to direct current, and the filter capacitor filters out the alternating current component, making the output direct current smoother by reducing the alternating current ripple coefficient. Thus, the induced current generated by the induction coil supplies a more stable current to the energized coil after passing through the rectifier bridge and the filter capacitor, resulting in smoother up-and-down movement of the float and a more stable and accurate current reading.

[0007] Preferably, the marking device includes a marking housing, on which current scale is provided.

[0008] Preferably, the mobile device includes a magnet, and the inside of the marking housing is a vacuum environment, allowing the magnet to levitate within this vacuum. Using magnetic levitation to indicate the current, the vacuum environment within the marking housing effectively reduces magnetic force loss.

[0009] Preferably, the polarity of the magnet is the same as the polarity of the energized coil. When the polarity of the energized coil and the magnet are the same, a repulsive force is generated. When the repulsive force generated by the current is greater than the weight of the magnet, the magnet levitates within the marking housing, thereby indicating the corresponding current value.

[0010] Preferably, the transformer high-voltage bushing current display device further includes a fixed housing, in which the induction coil, the rectifier filter device and the energized coil are arranged in sequence. One end of the fixed housing is fixed to the high-voltage bushing, and the other end is fixed to the marking device.

[0011] Preferably, the label housing is a glass housing.

[0012] Preferably, the induction coil is disposed between the high-voltage bushing and the terminal clamp.

[0013] The beneficial effects of this invention are:

[0014] 1. This invention installs a current indicator device on the high-voltage side bushing of a transformer based on principles such as electromagnetic induction, repulsion of like magnetic poles, and magnetic levitation force. This allows for direct viewing of the high-voltage side current value and assessment of the transformer's operating status.

[0015] 2. The device of the present invention is small in size and can intuitively indicate the high voltage current value; it can be installed indoors and outdoors without being limited by the installation location; it is easy to install and does not require changing the original structure of the transformer bushing; and the current indication can be observed 360° without any blind spots. Attached Figure Description

[0016] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a simplified structural diagram of the transformer high-voltage bushing current display device according to the present invention.

[0018] In the diagram: 1. Induction coil, 2. Energized coil, 3. High-voltage bushing, 4. Identification housing, 5. Vacuum environment, 6. Magnet, 7. Rectifier bridge, 8. Filter capacitor, 9. Fixing housing, 10. Wiring clamp. Detailed Implementation

[0019] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0020] like Figure 1As shown in this embodiment, the present invention proposes a transformer high-voltage bushing current display device, comprising an induction coil 1, an energized coil 2, an marking device, and a moving device. The induction coil 1 is connected to the energized coil 2, and the moving device is located inside the marking device. The marking device and the energized coil 2 are arranged opposite to each other. The induction coil 1 is fixed at the high-voltage bushing 3. The current in the high-voltage bushing 3 can flow through the induction coil 1 to generate an induced current. The induced current can supply power to the energized coil 2, allowing the moving device to move back and forth within the marking device and indicate the corresponding current value. Through the principle of electromagnetic induction, the current in the high-voltage bushing 3 causes an induced current in the induction coil 1, which supplies power to the energized coil 2. After being energized, the energized coil 2 generates polarity. Under the repulsive force of like poles, the moving device can move back and forth within the marking device, thereby indicating the corresponding current value. The entire device has a simple structure, stable display, and is easy to install. It solves the problem that small-capacity transformers currently lack high-voltage current indication devices, making it impossible to determine whether the high-voltage side current is biased or overcurrent. Specifically, the marking device includes a marking shell 4, on which a current scale is provided. When the moving device moves up and down, the accurate current value can be easily indicated through the current scale. The marking shell 4 can be made of glass, which is transparent, easy to observe, and has a certain strength. Besides glass, other easy-to-observe materials can also be used, such as transparent plastic, fiberglass, or acrylic. The moving device mainly includes a magnet 6. The marking shell 4 contains a vacuum environment 5, in which the magnet 6 can levitate. Specifically, the magnet 6 is circular. Current indication is achieved using magnetic levitation, and the vacuum environment 5 within the marking shell 4 effectively reduces magnetic force loss. The polarity of the magnet 6 is the same as that of the current-carrying coil 2. The polarity of the current-carrying coil 2 and the magnet 6 are the same, generating a repulsive force. When the repulsive force generated by the current exceeds the weight of the magnet 6, the magnet 6 levitates within the marking shell 4, thus indicating the corresponding current value. During this process, the primary current of electromagnetic force overcoming the weight of the magnet 6 is negligible.

[0021] like Figure 1 As shown, the transformer high-voltage bushing current display device also includes a rectifier and filter device, which is located between the induction coil 1 and the energized coil 2. Specifically, the rectifier and filter device includes a rectifier bridge 7 and a filter capacitor 8. The rectifier bridge 7 first converts the alternating current into direct current through the unidirectional conduction principle of the diode. The filter capacitor 8 can filter out the alternating current component and improve the efficiency and smoothness of the DC output by reducing the AC ripple coefficient, making the output DC smoother. In this way, the induced current generated by the induction coil 1 supplies a more stable current to the energized coil 2 after passing through the rectifier bridge 7 and the filter capacitor 8, and the up and down movement of the float will be more stable, so the indicated current value is more stable and accurate.

[0022] The transformer high-voltage bushing current display device also includes a fixed housing 9. Inside the fixed housing 9, an induction coil 1, a rectifier filter device, and a energized coil 2 are arranged in sequence. One end of the fixed housing 9 is fixed to the high-voltage bushing 3, and the other end is fixed with an marking device. Specifically, the fixed housing 9 shown in the figure is designed as an L-shaped structure.

[0023] To allow current to flow through the induction coil 1, the induction coil 1 is positioned between the high-voltage bushing 3 and the terminal clamp 10.

[0024] The working principle of the transformer high-voltage bushing current display device is as follows:

[0025] When current flows through induction coil 1, induction coil 1 generates induced current. After rectification and filtering by rectifier bridge 7 and filter capacitor 8, the induced current supplies power to energized coil 2. The polarity generated by energized coil 2 is the same as that of magnet 6. The repulsive force generated by the same polarity will cause magnet 6 to float up and down in the vacuum environment 5 inside the marking shell 4, thereby indicating different current values.

[0026] As can be seen from the above embodiments, the beneficial effects of the present invention are:

[0027] 1. This invention installs a current indicator device on the high-voltage side bushing of a transformer based on principles such as electromagnetic induction, repulsion of like magnetic poles, and magnetic levitation force. This allows for direct viewing of the high-voltage side current value and assessment of the transformer's operating status.

[0028] 2. The device of the present invention is small in size and can intuitively indicate the high voltage current value; it can be installed indoors and outdoors without being limited by the installation location; it is easy to install and does not require changing the original structure of the transformer bushing; and the current indication can be observed 360° without any blind spots.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transformer high-voltage bushing current display device, characterized in that, The device includes an induction coil, a energized coil, an identification device, and a moving device. The induction coil is connected to the energized coil, and the moving device is located inside the identification device. The identification device and the energized coil are positioned opposite each other. The induction coil is fixed to a high-voltage bushing. Current within the high-voltage bushing can flow through the induction coil to generate an induced current. This induced current supplies power to the energized coil, allowing the moving device to move back and forth within the identification device and indicate a corresponding current value. It also includes a rectifier and filter device located between the induction coil and the energized coil. The rectifier and filter device includes a rectifier bridge and a filter capacitor. The induced current generated by the induction coil can supply power to the energized coil after passing through the rectifier bridge and the filter capacitor. The marking device includes a marking shell, which is a transparent shell, and a current scale is provided on the marking shell; The mobile device includes a magnet, and the inside of the identification housing is a vacuum environment, in which the magnet can levitate. The polarity of the magnet is the same as the polarity of the energized coil; The transformer high-voltage bushing current display device also includes a fixed housing, inside which the induction coil, the rectifier filter device and the energizing coil are arranged in sequence. One end of the fixed housing is fixed to the high-voltage bushing, and the other end is fixed to the marking device. The induction coil is disposed between the high-voltage bushing and the terminal clamp.

2. The transformer high-voltage bushing current display device according to claim 1, characterized in that, The logo casing is made of glass.

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