An open type transformer coil with no excitation voltage regulation structure

Abstract

The utility model discloses an open type transformer coil of no excitation voltage regulation of novel voltage regulation structure is adopted, including open type coil, and the one side of open type coil is equipped with the tapping insulation panel, is arranged with the main wiring post and a plurality of regulation wiring post on the tapping insulation panel, and the main wiring post is located the center of tapping insulation panel, and a plurality of regulation wiring post is annular distribution with the main wiring post as the center, a plurality of regulation wiring post is connected with the main wiring post through the conversion tapping piece respectively, and under the condition of different voltage turns, the conversion wiring piece is connected with corresponding voltage turns regulation wiring post, realizes the matching of grid voltage and coil voltage. After adopting this open type transformer coil of no excitation voltage regulation of novel voltage regulation structure, the voltage regulation tapping insulation panel is simple in structure, easy to install and safe, and according to the voltage regulation gear that the coil needs, the number of regulation wiring post is arranged annularly around the center, saves the space of tapping insulation panel, and is more beautiful and practical.

Description

Technical Field

[0001] This utility model relates to the technical field of open-type transformer coil structure with no-excitation voltage regulation, and in particular to an open-type transformer coil with no-excitation voltage regulation using a novel voltage adjustment structure. Background Technology

[0002] Transformers are key equipment in power transmission and distribution systems. Due to voltage fluctuations in the power grid, in order to ensure that electrical equipment has a stable voltage, it is necessary to adjust the number of turns of the transformer input coil when the system voltage fluctuates significantly. This allows the grid voltage to match the coil voltage, adapting to grid voltage fluctuations and preventing overvoltage or undervoltage, thereby avoiding damage to electrical equipment.

[0003] Open-type dry-type transformers, with their superior flame-retardant and explosion-proof properties, have been widely used in load centers for power supply. Existing transformers with voltages of 35kV and below, and capacities of 25000kVA and below, such as... Figure 1 and Figure 2 As shown, multiple tap terminals 10 are arranged in parallel along a straight line on the tap insulation panel 30 of the open coil 20, and the conversion tap 40 is connected in series end to end on the multiple tap terminals 10. When the voltage fluctuates, the number of turns of the coil is adjusted by alternating the number of tap turns. Each time a different voltage is adjusted, the nuts or bolts of two tap terminals 10 need to be loosened, which is time-consuming and the space occupied by the tap position is also relatively large. Especially when there are many voltage levels to be adjusted, it affects the electrical safety of the coil surface. Utility Model Content

[0004] The purpose of this invention is to provide an open-type transformer coil with a novel voltage adjustment structure that simplifies the original operation of adjusting the number of coil voltage turns, improves work efficiency, and does not increase the size of the wiring panel due to the increased number of voltage adjustment levels. It also optimizes the appearance of the coil and improves the electrical safety of the coil surface.

[0005] To solve the above-mentioned technical problems, this utility model provides an open-type transformer coil with a novel voltage adjustment structure, including an open-type coil, wherein a tap insulation panel is provided on one side of the open-type coil;

[0006] The tap insulation panel is provided with a main terminal and a plurality of adjusting terminals. The main terminal is located at the center of the tap insulation panel, while the plurality of adjusting terminals are arranged in a ring around the main terminal.

[0007] The multiple regulating terminals are respectively connected to the main terminals via conversion taps. Under different voltage turns conditions, the conversion taps are connected to the corresponding voltage turns regulating terminals to achieve matching between the grid voltage and the coil voltage.

[0008] Preferably, the tap insulation panel has an insulation support plate on the side near the open coil, and is fixedly installed on the side of the open coil by the insulation support plate.

[0009] Preferably, the tap insulation panel has a central through hole for mounting the main terminal; and multiple edge through holes for mounting the adjustment terminal.

[0010] Preferably, one end of the main terminal and the adjusting terminal are connected to the wiring of the open coil, and the other end passes through the vertical tap insulation panel and is fixedly connected to the tap insulation panel by a lock nut.

[0011] Preferably, the conversion connector has adapter holes at both ends for fitting onto the main terminal or the adjusting terminal, and the conversion connector is fixedly connected to the main terminal or the adjusting terminal by a clamping nut.

[0012] Preferably, each of the adjusting terminals has a tap insulation panel on one side with a voltage level indicator to distinguish the voltage level of different adjusting terminals.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] With the adoption of this new type of open-type transformer coil with no-excitation voltage regulation, the voltage regulation tap insulation panel has a simple structure, is easy to install and safe. The number of terminals can be adjusted in a ring around the center according to the voltage adjustment level required by the coil, saving space on the tap insulation panel, making it more beautiful and practical. In addition, each level has a level mark, making the adjustment more intuitive. Attached Figure Description

[0015] Figure 1 This is a front view of the coil of an existing open-type transformer with no excitation voltage regulation;

[0016] Figure 2 This is a side view of the coil of an existing open-type transformer with no excitation voltage regulation;

[0017] Figure 3 This is a front view of the coil of the open-type voltage-regulating transformer with a novel voltage adjustment structure provided by this utility model;

[0018] Figure 4 This is a side view of the coil of an open-type transformer with a novel voltage adjustment structure that employs no-excitation voltage regulation, as provided by this utility model.

[0019] Figure 5 This is a top view of the open-type transformer coil with a novel voltage adjustment structure provided by this utility model, which uses no-excitation voltage regulation.

[0020] In the diagram: 1. Open coil; 2. Tap insulation panel; 3. Main terminal; 4. Adjustment terminal; 5. Changeover tap; 6. Insulation support plate; 7. Locking nut; 8. Compression nut; 9. Gear position indicator. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0024] This utility model provides an open-type transformer coil with no-excitation voltage regulation using a novel voltage adjustment structure. Please refer to [link / reference]. Figure 3-5The system includes an open coil 1, with a tap insulation panel 2 on one side. A main terminal 3 and multiple adjusting terminals 4 are arranged on the tap insulation panel 2. The main terminal 3 is located at the center of the tap insulation panel 2, while the multiple adjusting terminals 4 are arranged in a ring around the main terminal 3. The multiple adjusting terminals 4 are respectively connected to the main terminal 3 via conversion taps 5. Under different voltage turns, the conversion taps 5 are connected to the corresponding voltage turns adjusting terminals to achieve matching between the grid voltage and the coil voltage.

[0025] After adopting this new type of voltage adjustment structure for open-type transformer coils with no-excitation voltage regulation, the voltage adjustment tap insulation panel 2 has a simple structure, is easy to install and safe. The number of terminals 4 can be adjusted in a ring around the center according to the voltage adjustment range required by the coil, saving space on the tap insulation panel 2 and making it more aesthetically pleasing and practical.

[0026] Specifically, the tap insulation panel 2 is provided with an insulation support plate 6 on the side near the open coil 1, and is fixedly installed on the side of the open coil 1 by the insulation support plate 6.

[0027] Furthermore, the tap insulation panel 2 has a central through hole through which the main terminal 3 is installed during installation; there are also multiple edge through holes through which the adjusting terminal 4 is installed during installation.

[0028] Specifically, one end of the main terminal 3 and the adjusting terminal 4 are connected to the wiring of the open coil 1, and the other end passes through the vertical tap insulation panel 2 and is fixedly connected to the tap insulation panel 2 by a locking nut 7. In this embodiment, both the main terminal 3 and the adjusting terminal 4 are provided with external threads, so the locking nut 7 can fix the terminal to the tap insulation panel 2 through the external threads.

[0029] Furthermore, the adapter plate 5 has adapter holes at both ends for fitting onto the main terminal 3 or the adjusting terminal 4, and is fixedly connected to the main terminal 3 or the adjusting terminal 4 by means of a clamping nut 8. The external thread of the terminal is also utilized.

[0030] Furthermore, each of the adjustment terminals 4 has a tap insulation panel 2 on one side with a voltage level indicator 9 to distinguish the voltage levels of different adjustment terminals 4.

[0031] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An open type transformer coil with no excitation voltage regulation, characterized by, It includes an open coil (1), and a tap insulation panel (2) is provided on one side of the open coil (1). A main terminal (3) and multiple adjusting terminals (4) are arranged on the tap insulation panel (2). The main terminal (3) is located at the center of the tap insulation panel (2), while the multiple adjusting terminals (4) are arranged in a ring around the main terminal (3). Multiple regulating terminals (4) are connected to the main terminals (3) via conversion taps (5). Under different voltage turns, the conversion taps (5) are connected to the corresponding voltage turns regulating terminals to achieve matching between the grid voltage and the coil voltage.

2. An open type transformer coil with no excitation voltage regulation according to claim 1, characterized in that, The tap insulation panel (2) has an insulation support plate (6) on the side near the open coil (1), and is fixedly installed on the side of the open coil (1) by the insulation support plate (6).

3. An open type transformer coil with no excitation voltage regulation according to claim 1, characterized in that, The tap insulation panel (2) has a central through hole for installing the main terminal (3) and multiple edge through holes for installing the adjustment terminal (4).

4. A non-saturation voltage regulating open type transformer coil using a new voltage regulating structure according to claim 3, characterized in that, One end of the main terminal (3) and the adjusting terminal (4) are connected to the wiring of the open coil (1), and the other end passes through the vertical tap insulation panel (2) and is fixedly connected to the tap insulation panel (2) by the locking nut (7).

5. The open-type transformer coil with a novel voltage adjustment structure as described in claim 4, characterized in that, The conversion connector (5) has conversion holes at both ends for fitting onto the main terminal (3) or the adjusting terminal (4), and the conversion connector (5) is fixedly connected to the main terminal (3) or the adjusting terminal (4) by tightening nuts (8).

6. The open-type transformer coil with a novel voltage adjustment structure as described in claim 1, characterized in that, Each of the regulating terminals (4) has a tap insulation panel (2) on one side with a voltage level indicator (9) to distinguish the voltage level of different regulating terminals (4).

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